fix: persist offline unlock record during passkey PRF login

- Add fallbackKdfIterations parameter to completeLoginWithVaultKeys
- Save offline unlock record (email, profile, profileKey, kdfIterations)
  when completing vault-key-based login, ensuring offline unlock works
  after passkey (PRF) authentication
- Pass through fallbackIterations from performPasskeyLogin caller
- Add .reasonix/ to .gitignore

.codegraph/.gitignore

@@ -0,0 +1,17 @@
+# CodeGraph data files
+# These are local to each machine and should not be committed
+
+# Database
+*.db
+*.db-wal
+*.db-shm
+
+# Cache
+cache/
+
+# Logs
+*.log
+
+# Hook markers
+.dirty
+*.pid

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,70 @@
+name: "Bug Report"
+description: "Report a reproducible bug / 反馈可复现问题"
+title: "[Bug] "
+labels: ["bug", "needs-triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for reporting. Please provide enough detail so maintainers can reproduce quickly.
+        感谢反馈，请尽量提供可复现信息，方便快速定位。
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Pre-check / 提交前确认
+      options:
+        - label: I have searched existing issues and did not find a duplicate. / 我已搜索现有 issue，确认不是重复问题。
+          required: true
+        - label: I have read README and Project Wiki / 我已阅读 README 与 项目 Wiki。
+          required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Version / 版本
+      description: "Which version of NodeWarden are you using? Please provide the exact version or commit hash."
+      placeholder: "1.0.0"
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduce_steps
+    attributes:
+      label: Steps to Reproduce / 复现步骤
+      placeholder: |
+        1. Start service with ...
+        2. Open ...
+        3. Click ...
+        4. Observe ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior / 预期行为
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior / 实际行为
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs and Screenshots / 日志与截图
+      description: "Please paste key logs (docker logs / browser console / network errors)."
+      render: shell
+    validations:
+      required: false
+
+  - type: textarea
+    id: extra
+    attributes:
+      label: Additional Context / 补充信息
+      description: "Any workaround, frequency, impact scope, etc."

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,12 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Project Wiki/ 项目文档
+    url: https://github.com/shuaiplus/nodewarden/wiki
+    about: |
+      Please check the documentation for common questions and troubleshooting steps.
+      请先查看文档，常见问题和排查步骤可能已经覆盖了你的问题。
+  - name: Project Discussions / 讨论区
+    url: https://github.com/shuaiplus/nodewarden/discussions
+    about: |
+      For general questions, feature discussions, or if you're not sure which template to use, please post in the Discussions section.
+      如果你有一般性问题、功能讨论，或者不确定使用哪个模板，请在讨论区发帖。

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,62 @@
+name: "Feature Request"
+description: "Suggest an improvement / 功能建议"
+title: "[Feature] "
+labels: ["enhancement", "needs-triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Proposals with clear use-case and expected value are easier to evaluate.
+        说明清晰的使用场景和价值，有助于快速评估。
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Pre-check / 提交前确认
+      options:
+        - label: I have searched existing issues and this request is not duplicated. / 我已搜索现有 issue，确认不是重复建议。
+          required: true
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement / 现存问题
+      description: "What is difficult or missing today?"
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed Solution / 建议方案
+      description: "Describe your expected behavior, UI flow, API changes, etc."
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered / 备选方案
+      description: "Any alternatives or workarounds you've considered."
+    validations:
+      required: false
+
+  - type: textarea
+    id: impact
+    attributes:
+      label: Expected Impact / 预期价值
+      description: "Who benefits? Any performance/security/maintenance concerns?"
+    validations:
+      required: true
+
+  - type: input
+    id: scope
+    attributes:
+      label: Scope (Optional) / 影响范围（可选）
+      placeholder: "frontend / backend / docs / deployment"
+
+  - type: textarea
+    id: extra
+    attributes:
+      label: Additional Context / 补充信息
+      description: "Mockups, references, related links, etc."

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,31 @@
+## Summary
+
+<!-- What changed and why? -->
+
+## Change Type
+
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Compatibility update
+- [ ] Documentation
+- [ ] Refactor
+
+## Cross-File Checklist
+
+- [ ] I read `CONTRIBUTING.md`.
+- [ ] Schema changes, if any, updated both runtime schema and `migrations/0001_init.sql`.
+- [ ] Persistent data changes, if any, updated backup export/import or documented why backup is not needed.
+- [ ] User-facing text changes, if any, updated all locale files.
+- [ ] Bitwarden client compatibility was considered for sync/API shape changes.
+- [ ] No secrets, tokens, private deployment values, or real vault data are included.
+
+## Checks
+
+- [ ] `npx tsc -p tsconfig.json --noEmit`
+- [ ] `npx tsc -p webapp/tsconfig.json --noEmit`
+- [ ] `npm run i18n:validate`
+- [ ] `npm run build`
+
+## Notes
+
+<!-- Anything reviewers should pay special attention to? -->

.github/scripts/security.cjs

@@ -0,0 +1,467 @@
+const fs = require('fs');
+const path = require('path');
+
+/**
+ * Security Report Generator (Node.js)
+ * Better, faster, and more maintainable than Bash.
+ */
+
+class SecurityReport {
+    constructor() {
+        this.results = {
+            codeql: { status: 'PASS', findings: [], alertCount: 0, rulesCount: 0 },
+            snyk: { status: 'PASS', findings: [], vulnCount: 0 },
+            gitleaks: { status: 'PASS', findings: [], leaksCount: 0 },
+            trivy: { status: 'PASS', findings: [], misconfigCount: 0 },
+            coverage: { actions: 0, js: 0, ts: 0 },
+            artifactUris: []
+        };
+        this.auditTime = new Date().toISOString().replace('T', ' ').substring(0, 19) + ' UTC';
+        this.runId = process.env.GITHUB_RUN_ID || '0';
+        this.repository = process.env.GITHUB_REPOSITORY || 'unknown/repo';
+        this.runUrl = `https://github.com/${this.repository}/actions/runs/${this.runId}`;
+
+        this.locales = {
+            zh: {
+                filename: 'security-report-cn.md',
+                switcher: '[English](security-report.md) | 中文',
+                title: '🛡️ 安全审计与透明度报告',
+                grade: '安全评级',
+                important: '> [!IMPORTANT]\n> 本报告由 **GitHub Actions** 自动生成。为确保数据主权的绝对透明度，所有核心模块的安全扫描结果均实时公开。',
+                auditTime: '📅 审计时间',
+                runId: '📝 运行 ID',
+                env: '🛠️ 环境',
+                dashboard: '📉 实时安全仪表盘',
+                tool: '工具',
+                status: '状态',
+                findings: '发现项',
+                leaks: '泄露',
+                vulns: '漏洞',
+                alerts: '告警',
+                coverageTitle: '🔍 扫描覆盖范围',
+                module: '模块',
+                auditedFiles: '已审计文件',
+                coverage: '覆盖率',
+                detailedFindings: '🔍 详细发现项',
+                gitleaksTitle: '🔑 凭据泄露检查 (Gitleaks)',
+                gitleaksDesc: '`检测代码历史记录中硬编码的 API 密钥、密码或其他敏感令牌。`',
+                gitleaksSafe: '✅ **安全**：未发现硬编码的敏感凭据。',
+                gitleaksScope: '`扫描范围：所有代码更改和 Git 历史记录 (Gitleaks 全量扫描)`',
+                snykTitle: '📦 第三方依赖',
+                snykSafe: '✅ **安全**：在依赖项中未发现已知漏洞。',
+                package: '软件包',
+                severity: '严重程度',
+                description: '描述',
+                fixPlan: '修复方案',
+                codeqlTitle: '💻 代码质量与安全 (CodeQL)',
+                codeqlSummary: '#### 摘要',
+                rulesChecked: '已检查规则',
+                totalAlerts: '告警总数',
+                codeqlSafe: '✅ **安全**：CodeQL 扫描清洁，未检测到问题。',
+                ruleId: '规则 ID',
+                level: '级别',
+                location: '位置',
+                auditedList: '📂 已审计文件列表',
+                guideTitle: '⚠️ 操作指南',
+                guideDesc: '如果您看到 **FAIL** 状态或严重的代码问题：',
+                guideStep1: '1. **开发人员**：使用上方表格中的 **位置** 列找到确切的文件和行号。',
+                guideStep2: '2. **纠正**：遵循为每个规则提供的文档链接以提交修复。',
+                guideStep3: '3. **可追溯性**：完整的原始 `.sarif` 数据已附加到此分支。下载并将其导入您的 IDE（例如 VS Code SARIF 查看器）进行本地分析。',
+                footer: '💡 *由 NodeWarden 安全工作流生成。透明度是我们的承诺。*',
+                auditedIcon: '✅ **已审计**',
+                noFiles: '未检索到文件。',
+                trivyTitle: '🛡️ 容器配置安全 (Trivy)',
+                trivyDesc: '`检测 Dockerfile 和容器配置中的安全风险与最佳实践。`',
+                trivySafe: '✅ **安全**：未发现容器配置缺陷。'
+            },
+            en: {
+                filename: 'security-report.md',
+                switcher: 'English | [中文](security-report-cn.md)',
+                title: '🛡️ Security Audit & Transparency Report',
+                grade: 'Security Grade',
+                important: '> [!IMPORTANT]\n> This report is automatically generated by **GitHub Actions**. To ensure absolute transparency of data sovereignty, all core module security scan results are made public in real-time.',
+                auditTime: '📅 Audit Time',
+                runId: '📝 Run ID',
+                env: '🛠️ Environment',
+                dashboard: '📉 Real-time Security Dashboard',
+                tool: 'Tool',
+                status: 'Status',
+                findings: 'Findings',
+                leaks: 'Leaks',
+                vulns: 'Vulns',
+                alerts: 'Alerts',
+                coverageTitle: '🔍 Scan Coverage',
+                module: 'Module',
+                auditedFiles: 'Audited Files',
+                coverage: 'Coverage',
+                detailedFindings: '🔍 Detailed Findings',
+                gitleaksTitle: '🔑 Credential Leak Check (Gitleaks)',
+                gitleaksDesc: '`This section detects hardcoded API Keys, passwords, or other sensitive tokens in the code history.`',
+                gitleaksSafe: '✅ **SAFE**: No hardcoded sensitive credentials found.',
+                gitleaksScope: '`Scan Scope: All code changes and Git history (Gitleaks Full Scan)`',
+                snykTitle: '📦 Third-party Dependencies',
+                snykSafe: '✅ **SAFE**: No known vulnerabilities found in dependencies.',
+                package: 'Package',
+                severity: 'Severity',
+                description: 'Description',
+                fixPlan: 'Fix Plan',
+                codeqlTitle: '💻 Code Quality & Safety (CodeQL)',
+                codeqlSummary: '#### Summary',
+                rulesChecked: 'Rules Checked',
+                totalAlerts: 'Total Alerts',
+                codeqlSafe: '✅ **SAFE**: CodeQL clean. No issues detected.',
+                ruleId: 'Rule ID',
+                level: 'Level',
+                location: 'Location',
+                auditedList: '📂 Audited File List',
+                guideTitle: '⚠️ Action Guide',
+                guideDesc: 'If you see a **FAIL** status or serious code issues:',
+                guideStep1: '1. **Developers**: Use the **Location** column in the tables above to find the exact file and line number.',
+                guideStep2: '2. **Remediate**: Follow the documentation links provided for each rule to submit a fix.',
+                guideStep3: '3. **Traceability**: Full raw `.sarif` data is attached to this branch. Download and import it into your IDE (e.g., VS Code SARIF Viewer) for local analysis.',
+                footer: '💡 *Generated by the NodeWarden security workflow. Transparency is our commitment.*',
+                auditedIcon: '✅ **Audited**',
+                noFiles: 'No files found.',
+                trivyTitle: '🛡️ Container Config Security (Trivy)',
+                trivyDesc: '`This section detects security risks and best practices in Dockerfile and container configurations.`',
+                trivySafe: '✅ **SAFE**: No container configuration defects found.'
+            }
+        };
+    }
+
+    // --- Data Parsers ---
+
+    async parseCodeQL() {
+        const sarifPath = 'sarif-results';
+        if (!fs.existsSync(sarifPath)) return;
+
+        const files = this.globFiles(sarifPath, '.sarif');
+        let totalAlerts = 0;
+        let rulesSet = new Set();
+        let findings = [];
+        let artifactUris = new Set();
+
+        for (const file of files) {
+            const data = JSON.parse(fs.readFileSync(file, 'utf8'));
+            for (const run of data.runs || []) {
+                // Collect Rules
+                (run.tool.driver.rules || []).forEach(r => rulesSet.add(r.id));
+                (run.tool.extensions || []).forEach(ext => {
+                    (ext.rules || []).forEach(r => rulesSet.add(r.id));
+                });
+
+                // Collect Results
+                for (const res of run.results || []) {
+                    totalAlerts++;
+                    const loc = (res.locations && res.locations[0]?.physicalLocation) || {};
+                    findings.push({
+                        id: res.ruleId,
+                        level: res.level || 'warning',
+                        path: loc.artifactLocation?.uri || 'Global',
+                        line: loc.region?.startLine || '-',
+                        message: res.message?.text || 'No description'
+                    });
+                }
+
+                // Track Coverage (Deduplicated)
+                (run.artifacts || []).forEach(art => {
+                    const uri = art.location?.uri || '';
+                    if (uri) artifactUris.add(uri);
+                });
+            }
+        }
+
+        this.results.artifactUris = Array.from(artifactUris).sort();
+        this.results.coverage.actions = this.results.artifactUris.filter(u => u.startsWith('.github/workflows/')).length;
+        this.results.coverage.js = this.results.artifactUris.filter(u => u.endsWith('.js')).length;
+        this.results.coverage.ts = this.results.artifactUris.filter(u => u.endsWith('.ts')).length;
+
+        this.results.codeql.alertCount = totalAlerts;
+        this.results.codeql.rulesCount = rulesSet.size;
+        this.results.codeql.findings = findings;
+        if (totalAlerts > 0) this.results.codeql.status = 'INFO';
+    }
+
+    async parseSnyk() {
+        const jsonPath = 'snyk_result.json';
+        if (!fs.existsSync(jsonPath)) return;
+
+        try {
+            const data = JSON.parse(fs.readFileSync(jsonPath, 'utf8'));
+            const projects = Array.isArray(data) ? data : [data];
+            let vulnTotal = 0;
+            let findings = [];
+
+            for (const proj of projects) {
+                const vulns = proj.vulnerabilities || [];
+                vulnTotal += vulns.length;
+                vulns.forEach(v => {
+                    findings.push({
+                        pkg: `${v.packageName}@${v.version}`,
+                        severity: v.severity,
+                        title: v.title,
+                        url: v.url,
+                        fixedIn: Array.isArray(v.fixedIn) ? v.fixedIn.join(', ') : (v.fixedIn || 'N/A')
+                    });
+                });
+            }
+
+            this.results.snyk.vulnCount = vulnTotal;
+            this.results.snyk.findings = findings;
+            if (vulnTotal > 0) this.results.snyk.status = 'WARN';
+        } catch (e) {
+            console.error('Error parsing Snyk JSON:', e.message);
+        }
+    }
+
+    async parseGitleaks() {
+        const files = this.globFiles('.', 'results.sarif');
+        if (files.length === 0) return;
+
+        try {
+            const data = JSON.parse(fs.readFileSync(files[0], 'utf8'));
+            let leaks = 0;
+            let findings = [];
+            for (const run of data.runs || []) {
+                for (const res of run.results || []) {
+                    leaks++;
+                    findings.push({
+                        id: res.ruleId,
+                        message: res.message.text,
+                        path: res.locations[0]?.physicalLocation?.artifactLocation?.uri || 'Unknown'
+                    });
+                }
+            }
+
+            this.results.gitleaks.leaksCount = leaks;
+            this.results.gitleaks.findings = findings;
+            if (leaks > 0) this.results.gitleaks.status = 'FAIL';
+        } catch (e) {
+            console.error('Error parsing Gitleaks SARIF:', e.message);
+        }
+    }
+
+    async parseTrivy() {
+        const jsonPath = 'trivy_result.json';
+        if (!fs.existsSync(jsonPath)) return;
+
+        try {
+            const data = JSON.parse(fs.readFileSync(jsonPath, 'utf8'));
+            let misconfigs = 0;
+            let findings = [];
+
+            (data.Results || []).forEach(res => {
+                (res.Misconfigurations || []).forEach(m => {
+                    misconfigs++;
+                    findings.push({
+                        id: m.ID,
+                        severity: m.Severity,
+                        title: m.Title,
+                        message: m.Message,
+                        status: m.Status,
+                        target: res.Target
+                    });
+                });
+            });
+
+            this.results.trivy.misconfigCount = misconfigs;
+            this.results.trivy.findings = findings;
+            if (misconfigs > 0) this.results.trivy.status = 'WARN';
+        } catch (e) {
+            console.error('Error parsing Trivy JSON:', e.message);
+        }
+    }
+
+    generateTable(type, t) {
+        let files = [];
+        if (type === 'actions') files = this.results.artifactUris.filter(u => u.startsWith('.github/workflows/'));
+        else if (type === 'js') files = this.results.artifactUris.filter(u => u.endsWith('.js'));
+        else if (type === 'ts') files = this.results.artifactUris.filter(u => u.endsWith('.ts'));
+
+        if (files.length === 0) return `> ${t.noFiles}\n`;
+
+        let table = `| ${t.module} | ${t.location} | ${t.status} |\n| :--- | :--- | :--- |\n`;
+        files.forEach(f => {
+            const filename = path.basename(f);
+            table += `| \`${filename}\` | \`${f}\` | ${t.auditedIcon} |\n`;
+        });
+        return table;
+    }
+
+    // --- Renderers ---
+
+    generateMarkdown(localeKey) {
+        const { codeql, snyk, gitleaks, coverage } = this.results;
+        const t = this.locales[localeKey];
+
+        // Calculate Grade
+        let grade = 'A+';
+        let gradeColor = 'success';
+        if (gitleaks.status === 'FAIL') { grade = 'D'; gradeColor = 'red'; }
+        else if (snyk.vulnCount > 10 || this.results.trivy.misconfigCount > 5) { grade = 'C'; gradeColor = 'orange'; }
+        else if (snyk.vulnCount > 0 || codeql.alertCount > 0 || this.results.trivy.misconfigCount > 0) { grade = 'B'; gradeColor = 'blue'; }
+
+        const badge = (label, value, color) => `![${label}](https://img.shields.io/badge/${label.replace(/ /g, '_')}-${value}-${color}?style=for-the-badge)`;
+
+        let md = `# ${t.title}\n\n`;
+        md += `${t.switcher}\n\n`;
+        md += `${badge(t.grade.replace(/ /g, '_'), grade, gradeColor)}\n\n`;
+        md += `${t.important}\n\n`;
+
+        md += `| ${t.auditTime} | ${t.runId} | ${t.env} |\n`;
+        md += `| :--- | :--- | :--- |\n`;
+        md += `| \`${this.auditTime}\` | [#${this.runId}](${this.runUrl}) | \`GitHub CI/CD\` |\n\n`;
+
+        md += `---\n\n## ${t.dashboard}\n\n`;
+        md += `| ${t.tool} | ${t.status} | ${t.findings} |\n`;
+        md += `| :--- | :--- | :--- |\n`;
+        md += `| **Credential Leak (Gitleaks)** | ${this.getBadge(gitleaks.status)} | \`${gitleaks.leaksCount}\` ${t.leaks} |\n`;
+        md += `| **Dependency Scan (Snyk)** | ${this.getBadge(snyk.status)} | \`${snyk.vulnCount}\` ${t.vulns} |\n`;
+        md += `| **Static Analysis (CodeQL)** | ${this.getBadge(codeql.status)} | \`${codeql.alertCount}\` ${t.alerts} |\n`;
+        md += `| **Container Scan (Trivy)** | ${this.getBadge(this.results.trivy.status)} | \`${this.results.trivy.misconfigCount}\` ${t.findings} |\n\n`;
+
+        md += `---\n\n## ${t.coverageTitle}\n\n`;
+        md += `| ${t.module} | ${t.auditedFiles} | ${t.coverage} |\n`;
+        md += `| :--- | :---: | :---: |\n`;
+        md += `| **GitHub Actions** | \`${coverage.actions}\` | ✨ **100%** |\n`;
+        md += `| **JavaScript (Frontend)** | \`${coverage.js}\` | ✨ **100%** |\n`;
+        md += `| **TypeScript (Backend)** | \`${coverage.ts}\` | ✨ **100%** |\n\n`;
+
+        md += `---\n\n## ${t.detailedFindings}\n\n`;
+
+        // Gitleaks Section
+        md += `### ${t.gitleaksTitle}\n`;
+        md += `${t.gitleaksDesc} ${t.gitleaksScope}\n\n`;
+        if (gitleaks.findings.length > 0) {
+            md += `| ${t.ruleId} | ${t.location} | ${t.description} |\n`;
+            md += `| :--- | :--- | :--- |\n`;
+            gitleaks.findings.forEach(f => {
+                md += `| \`${f.id}\` | \`${f.path}\` | ${f.message} |\n`;
+            });
+        } else {
+            md += `${t.gitleaksSafe}\n`;
+        }
+
+        // Trivy Section
+        md += `\n### ${t.trivyTitle}\n`;
+        md += `${t.trivyDesc}\n\n`;
+        if (this.results.trivy.findings.length > 0) {
+            md += `| ${t.ruleId} | ${t.severity} | ${t.location} | ${t.description} |\n`;
+            md += `| :--- | :---: | :--- | :--- |\n`;
+            this.results.trivy.findings.forEach(f => {
+                const icon = f.severity === 'CRITICAL' ? '🔴' : (f.severity === 'HIGH' ? '🟠' : '🟡');
+                md += `| \`${f.id}\` | ${icon} ${f.severity} | \`${f.target}\` | ${f.title}: ${f.message} |\n`;
+            });
+        } else {
+            md += `${t.trivySafe}\n`;
+        }
+
+        // Snyk Section
+        md += `\n### ${t.snykTitle}\n`;
+        if (snyk.findings.length > 0) {
+            md += `| ${t.package} | ${t.severity} | ${t.description} | ${t.fixPlan} |\n`;
+            md += `| :--- | :---: | :--- | :--- |\n`;
+            snyk.findings.forEach(f => {
+                const icon = f.severity === 'critical' ? '🔴' : (f.severity === 'high' ? '🟠' : '🟡');
+                md += `| \`${f.pkg}\` | ${icon} ${f.severity} | [${f.title}](${f.url}) | ${f.fixedIn === 'N/A' ? 'No fix' : `Upgrade to \`${f.fixedIn}\``} |\n`;
+            });
+        } else {
+            md += `${t.snykSafe}\n`;
+        }
+
+        // CodeQL Section
+        md += `\n### ${t.codeqlTitle}\n`;
+        if (codeql.findings.length > 0) {
+            md += `${t.codeqlSummary}\n- **${t.rulesChecked}**: \`${codeql.rulesCount}\`\n- **${t.totalAlerts}**: \`${codeql.alertCount}\`\n\n`;
+            md += `| ${t.ruleId} | ${t.level} | ${t.location} | ${t.description} |\n`;
+            md += `| :--- | :---: | :--- | :--- |\n`;
+            codeql.findings.forEach(f => {
+                const icon = f.level === 'error' ? '🔴' : (f.level === 'warning' ? '🟠' : '🔵');
+                const prefix = f.id.split('/')[0];
+                const langMap = {
+                    'js': 'javascript',
+                    'actions': 'github-actions',
+                    'cpp': 'cpp',
+                    'cs': 'csharp',
+                    'go': 'go',
+                    'java': 'java',
+                    'py': 'python',
+                    'rb': 'ruby',
+                    'swift': 'swift'
+                };
+                const langPath = langMap[prefix] || 'javascript';
+                md += `| [${f.id}](https://codeql.github.com/codeql-query-help/${langPath}/${f.id.replace(/\//g, '-')}/) | ${icon} ${f.level} | \`${f.path}:${f.line}\` | ${f.message} |\n`;
+            });
+        } else {
+            md += `${t.codeqlSafe}\n`;
+        }
+
+        // Audited Files List
+        md += `\n### ${t.auditedList}\n`;
+        md += `<details>\n<summary><b>GitHub Actions (${this.results.coverage.actions})</b></summary>\n\n`;
+        md += this.generateTable('actions', t);
+        md += `\n</details>\n\n`;
+
+        md += `<details>\n<summary><b>JavaScript (${this.results.coverage.js})</b></summary>\n\n`;
+        md += this.generateTable('js', t);
+        md += `\n</details>\n\n`;
+
+        md += `<details>\n<summary><b>TypeScript (${this.results.coverage.ts})</b></summary>\n\n`;
+        md += this.generateTable('ts', t);
+        md += `\n</details>\n\n`;
+
+        // Action Guide
+        md += `--- \n\n## ${t.guideTitle}\n\n`;
+        md += `${t.guideDesc}\n`;
+        md += `${t.guideStep1}\n`;
+        md += `${t.guideStep2}\n`;
+        md += `${t.guideStep3}\n\n`;
+
+        md += `--- \n\n${t.footer}`;
+
+        return md;
+    }
+
+    // --- Helpers ---
+
+    getBadge(status) {
+        if (status === 'PASS') return '![Pass](https://img.shields.io/badge/Status-PASS-success?style=for-the-badge)';
+        if (status === 'WARN' || status === 'INFO') return '![Warning](https://img.shields.io/badge/Status-NOTICE-orange?style=for-the-badge)';
+        return '![Fail](https://img.shields.io/badge/Status-FAIL-red?style=for-the-badge)';
+    }
+
+    globFiles(dir, ext) {
+        let results = [];
+        const list = fs.readdirSync(dir);
+        for (const file of list) {
+            const fullPath = path.join(dir, file);
+            const stat = fs.statSync(fullPath);
+            if (stat && stat.isDirectory()) {
+                results = results.concat(this.globFiles(fullPath, ext));
+            } else if (file.endsWith(ext)) {
+                results.push(fullPath);
+            }
+        }
+        return results;
+    }
+
+    async run() {
+        console.log('--- Security Report Generation Started ---');
+        await this.parseCodeQL();
+        await this.parseSnyk();
+        await this.parseGitleaks();
+        await this.parseTrivy();
+
+        for (const localeKey of Object.keys(this.locales)) {
+            const locale = this.locales[localeKey];
+            const markdown = this.generateMarkdown(localeKey);
+            fs.writeFileSync(locale.filename, markdown);
+            console.log(`Report generated successfully at ${locale.filename}`);
+        }
+    }
+}
+
+new SecurityReport().run().catch(err => {
+    console.error('Report generation failed:', err);
+    process.exit(1);
+});

.github/workflows/security.yml

@@ -0,0 +1,142 @@
+name: Security Scan
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches: 
+      - main
+  workflow_dispatch:
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+      actions: read
+    env:
+      SECURITY_SNYK_TOKEN: ${{ secrets.SECURITY_SNYK_TOKEN }}
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Initialize CodeQL
+        if: env.ACT != 'true'
+        continue-on-error: true
+        uses: github/codeql-action/init@v4
+        with:
+          languages: javascript-typescript, actions
+          build-mode: none
+          queries: security-extended,security-and-quality
+
+      - name: Perform CodeQL Analysis
+        if: env.ACT != 'true'
+        continue-on-error: true
+        uses: github/codeql-action/analyze@v4
+        with:
+          upload: true
+          output: sarif-results
+
+      - name: Install Gitleaks
+        if: env.ACT != 'true'
+        continue-on-error: true
+        run: |
+          GITLEAKS_VERSION="8.28.0"
+          curl -sSL -o gitleaks.tar.gz "https://github.com/gitleaks/gitleaks/releases/download/v${GITLEAKS_VERSION}/gitleaks_${GITLEAKS_VERSION}_linux_x64.tar.gz"
+          tar -xzf gitleaks.tar.gz gitleaks
+          chmod +x gitleaks
+          sudo mv gitleaks /usr/local/bin/gitleaks
+
+      - name: Secret Detection
+        if: env.ACT != 'true'
+        continue-on-error: true
+        run: |
+          gitleaks git . --report-format sarif --report-path results.sarif --no-banner || true
+
+      - name: Install Project Dependencies
+        if: env.SECURITY_SNYK_TOKEN != ''
+        env:
+          SECURITY_PACKAGE: ${{ vars.SECURITY_PACKAGE || '' }}
+        run: |
+          echo "Preparing dependency lock files for security scanning..."
+          if [ -z "$SECURITY_PACKAGE" ]; then
+            echo "SECURITY_PACKAGE is empty, installing in root..."
+            npm install --package-lock-only
+          else
+            echo "SECURITY_PACKAGE is set to: $SECURITY_PACKAGE"
+            # Split by comma and install
+            IFS=',' read -ra PACKAGES <<< "$SECURITY_PACKAGE"
+            for pkg in "${PACKAGES[@]}"; do
+              if [ -d "$pkg" ]; then
+                echo "Installing in "$pkg"..."
+                npm install --prefix "$pkg" --package-lock-only
+              else
+                echo "Warning: Directory $pkg not found, skipping."
+              fi
+            done
+          fi
+
+      - name: Dependency Scan
+        id: snyk
+        if: env.SECURITY_SNYK_TOKEN != ''
+        continue-on-error: true
+        run: |
+          npm install -g snyk          
+          snyk auth ${{ secrets.SECURITY_SNYK_TOKEN }}
+          snyk test --all-projects --json-file-output=snyk_result.json > snyk_result.txt || true
+        env:
+          SECURITY_SNYK_TOKEN: ${{ secrets.SECURITY_SNYK_TOKEN }}
+
+      - name: Check for Dockerfile
+        id: check_docker
+        run: |
+          if [ -f "Dockerfile" ]; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Container Security Scan (Trivy)
+        if: steps.check_docker.outputs.exists == 'true'
+        continue-on-error: true
+        run: |
+          VERSION="0.56.1"
+          echo "Installing Trivy $VERSION..."
+          curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin "v$VERSION"
+          trivy config . --format json --output trivy_result.json --severity CRITICAL,HIGH || true
+
+      - name: Generate Security Report
+        run: |
+          # Gitleaks typically produces results.sarif if configured or by default in some versions
+          # We'll ensure it exists for our reporter
+          node .github/scripts/security.cjs
+          
+          # Also append to step summary for immediate visibility in GHA UI
+          cat security-report.md >> $GITHUB_STEP_SUMMARY
+          echo -e "\n---\n" >> $GITHUB_STEP_SUMMARY
+          cat security-report-cn.md >> $GITHUB_STEP_SUMMARY
+
+      - name: Upload Gitleaks Results to GitHub Security
+        uses: github/codeql-action/upload-sarif@v4
+        if: always()
+        with:
+          sarif_file: results.sarif
+          category: gitleaks
+
+      - name: Upload Security Report Artifacts
+        if: always()
+        uses: actions/upload-artifact@v6
+        with:
+          name: security-report
+          if-no-files-found: ignore
+          path: |
+            security-report.md
+            security-report-cn.md
+            snyk_result.txt
+            snyk_result.json
+            trivy_result.json
+            results.sarif
+            sarif-results/*.sarif

.github/workflows/sync-global-domains.yml

@@ -0,0 +1,51 @@
+name: Sync Bitwarden global domains
+
+on:
+  schedule:
+    - cron: "17 4 * * 1"
+  workflow_dispatch:
+    inputs:
+      bitwarden_ref:
+        description: "bitwarden/server ref to sync"
+        required: false
+        default: "main"
+        type: string
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  sync-global-domains:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Sync generated Bitwarden domains
+        run: npm run domains:sync -- --ref "${{ inputs.bitwarden_ref || 'main' }}"
+
+      - name: Verify custom domains were not touched
+        run: git diff --exit-code -- src/static/global_domains.custom.json
+
+      - name: Create pull request
+        uses: peter-evans/create-pull-request@v6
+        with:
+          branch: chore/sync-bitwarden-global-domains
+          delete-branch: true
+          title: "chore: sync Bitwarden global domain rules"
+          commit-message: "chore: sync Bitwarden global domain rules"
+          body: |
+            Automated sync from bitwarden/server.
+
+            This PR only updates:
+            - `src/static/global_domains.bitwarden.json`
+            - `src/static/global_domains.bitwarden.meta.json`
+
+            `src/static/global_domains.custom.json` is intentionally left untouched.
+          add-paths: |
+            src/static/global_domains.bitwarden.json
+            src/static/global_domains.bitwarden.meta.json

.github/workflows/sync-upstream.yml

@@ -0,0 +1,143 @@
+name: Sync upstream
+
+on:
+  schedule:
+    - cron: "0 3 * * *"
+  workflow_dispatch:
+    inputs:
+      target_commit:
+        description: 'Commit hash (leave blank to use latest commit)'
+        required: false
+        type: string
+
+permissions:
+  contents: write
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Configure git
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+      - name: Add upstream
+        run: |
+          git remote add upstream https://github.com/shuaiplus/NodeWarden.git || true
+          git fetch upstream --tags
+
+      - name: Resolve target commit
+        id: resolve
+        run: |
+          TRIGGER="${{ github.event_name }}"
+          MANUAL_INPUT="${{ github.event.inputs.target_commit }}"
+
+          if [ "$TRIGGER" = "schedule" ]; then
+            # Auto mode: resolve latest upstream release tag
+            LATEST_TAG=$(curl -s https://api.github.com/repos/shuaiplus/NodeWarden/releases/latest | jq -r .tag_name)
+            if [ "$LATEST_TAG" = "null" ] || [ -z "$LATEST_TAG" ]; then
+              echo "No release found in upstream."
+              exit 1
+            fi
+            TARGET_SHA=$(git rev-list -n 1 "$LATEST_TAG" 2>/dev/null)
+            if [ -z "$TARGET_SHA" ]; then
+              echo "Tag '$LATEST_TAG' not found after fetch."
+              exit 1
+            fi
+            echo "mode=auto" >> $GITHUB_OUTPUT
+            echo "latest_tag=$LATEST_TAG" >> $GITHUB_OUTPUT
+            echo "target_sha=$TARGET_SHA" >> $GITHUB_OUTPUT
+            echo "Auto mode — latest release: $LATEST_TAG ($TARGET_SHA)"
+
+          elif [ -n "$MANUAL_INPUT" ]; then
+            # Manual mode: use provided commit hash or tag
+            TARGET_SHA=$(git rev-parse "$MANUAL_INPUT" 2>/dev/null)
+            if [ -z "$TARGET_SHA" ]; then
+              echo "Cannot resolve '$MANUAL_INPUT' to a commit."
+              exit 1
+            fi
+            echo "mode=manual" >> $GITHUB_OUTPUT
+            echo "target_sha=$TARGET_SHA" >> $GITHUB_OUTPUT
+            echo "Manual mode — target: $MANUAL_INPUT ($TARGET_SHA)"
+
+          else
+            # Manual mode, blank input: use latest commit on upstream/main
+            TARGET_SHA=$(git rev-parse upstream/main)
+            echo "mode=manual" >> $GITHUB_OUTPUT
+            echo "target_sha=$TARGET_SHA" >> $GITHUB_OUTPUT
+            echo "Manual mode — latest commit: $TARGET_SHA"
+          fi
+
+      - name: Check if update is needed
+        id: check
+        run: |
+          TARGET_SHA="${{ steps.resolve.outputs.target_sha }}"
+          MODE="${{ steps.resolve.outputs.mode }}"
+
+          if [ "$MODE" = "manual" ]; then
+            # Manual: skip only if HEAD is exactly this commit
+            CURRENT_SHA=$(git rev-parse HEAD)
+            if [ "$CURRENT_SHA" = "$TARGET_SHA" ]; then
+              echo "Already at $TARGET_SHA — skipping."
+              echo "needs_update=false" >> $GITHUB_OUTPUT
+            else
+              echo "Switching to $TARGET_SHA"
+              echo "needs_update=true" >> $GITHUB_OUTPUT
+            fi
+          else
+            # Auto: skip if target is already in ancestry
+            if git merge-base --is-ancestor "$TARGET_SHA" HEAD 2>/dev/null; then
+              echo "Already up to date with $TARGET_SHA — skipping."
+              echo "needs_update=false" >> $GITHUB_OUTPUT
+            else
+              echo "Update needed — target: $TARGET_SHA"
+              echo "needs_update=true" >> $GITHUB_OUTPUT
+            fi
+          fi
+
+      - name: Apply update
+        if: steps.check.outputs.needs_update == 'true'
+        run: |
+          TARGET_SHA="${{ steps.resolve.outputs.target_sha }}"
+          MODE="${{ steps.resolve.outputs.mode }}"
+          git checkout main
+          if [ "$MODE" = "manual" ]; then
+            # Hard reset allows both upgrade and rollback
+            git reset --hard "$TARGET_SHA"
+          else
+            git merge "$TARGET_SHA" --no-edit
+          fi
+
+      - name: Restore workflow file
+        if: steps.check.outputs.needs_update == 'true'
+        run: |
+          # Always keep our own workflow file, never let upstream overwrite it
+          git checkout HEAD@{1} -- .github/workflows/sync-upstream.yml 2>/dev/null || true
+          if ! git diff --cached --quiet; then
+            git commit -m "chore: restore sync-upstream workflow after sync"
+          fi
+
+      - name: Push
+        if: steps.check.outputs.needs_update == 'true'
+        run: |
+          if [ "${{ steps.resolve.outputs.mode }}" = "manual" ]; then
+            git push origin main --force
+          else
+            git push origin main
+          fi
+
+      - name: Summary
+        run: |
+          if [ "${{ steps.check.outputs.needs_update }}" = "true" ]; then
+            echo "### Synced successfully" >> $GITHUB_STEP_SUMMARY
+            echo "- **Mode:** ${{ steps.resolve.outputs.mode }}" >> $GITHUB_STEP_SUMMARY
+            echo "- **Tag:** ${{ steps.resolve.outputs.latest_tag || 'N/A (manual)' }}" >> $GITHUB_STEP_SUMMARY
+            echo "- **Commit:** \`${{ steps.resolve.outputs.target_sha }}\`" >> $GITHUB_STEP_SUMMARY
+          else
+            echo "### Nothing to update" >> $GITHUB_STEP_SUMMARY
+          fi

.gitignore

@@ -6,6 +6,8 @@ node_modules/
 .dev.vars
 wrangler.my.toml
 RELEASE_NOTES.md
+tests/selfcheck.ts
+problem.md
 
 # Build output
 dist/
@@ -24,7 +26,7 @@ Thumbs.db
 # Logs
 *.log
 npm-debug.log*
-
+.vite-tailwind.err
 # Environment
 .env
 .env.local
@@ -35,3 +37,21 @@ npm-debug.log*
 
 # Package lock (optional - remove if you want to commit it)
 # package-lock.json
+
+tmp/
+.tmp/
+.tmp-bitwarden-clients/
+
+nodewarden.wiki/
+wiki/
+AGENTS.md
+settings.json
+.claude/
+NodeWarden-compat/
+.codex-upstream/
+.codex-upstream/bitwarden-server/
+.codex-upstream/bitwarden-clients/
+.codex-upstream/bitwarden-web/
+.codex-upstream/bitwarden-browser/
+
+.reasonix/

CONTRIBUTING.md

@@ -0,0 +1,133 @@
+# Contributing to NodeWarden
+
+Thanks for taking the time to improve NodeWarden.
+
+NodeWarden is a Bitwarden-compatible server with a custom web vault, Cloudflare
+Workers/D1 storage, attachment storage, imports/exports, and scheduled backups.
+Small changes can affect official clients, backups, migrations, or locale files,
+so please keep changes focused and check the related parts of the project.
+
+## Before Opening an Issue
+
+For bug reports, include enough detail for someone else to reproduce the problem:
+
+- The client or browser you used.
+- The page, API route, or action that failed.
+- Screenshots, logs, or the exact error message.
+- Whether the problem happened after sync, import, export, restore, upgrade, or
+  a fresh deployment.
+
+Please do not report NodeWarden-specific problems to the official Bitwarden
+team. This project is independent from Bitwarden.
+
+## Pull Request Guidelines
+
+Keep pull requests small enough to review. A good PR should explain:
+
+- What changed and why.
+- What user-facing behavior changed.
+- Which related areas were checked.
+- Which commands were run before submitting.
+
+Avoid mixing unrelated refactors with feature or bug-fix work. If a cleanup is
+needed before the real fix, mention that clearly in the PR.
+
+## Areas That Need Extra Care
+
+Some parts of the codebase are deliberately connected. When changing one of
+these areas, check the related files before calling the work complete.
+
+### Database Changes
+
+Runtime schema lives in `src/services/storage-schema.ts`. The initial D1 schema
+lives in `migrations/0001_init.sql`.
+
+If you add or change a table, column, or index:
+
+- Update both schema files.
+- Bump `STORAGE_SCHEMA_VERSION` in `src/services/storage.ts`.
+- Decide whether the data should be included in instance backup.
+
+### Backup And Restore
+
+Backup export and restore are whitelist-based. This protects old backups from
+breaking when fields are removed and prevents transient or secret runtime data
+from being exported by accident.
+
+When adding persistent data, check:
+
+- `src/services/backup-archive.ts`
+- `src/services/backup-import.ts`
+- `webapp/src/lib/api/backup.ts`
+
+Do not export runtime lock rows such as `backup.runner.lock.v1`. Do not import
+retired sensitive fields such as `users.api_key`.
+
+### Secrets And Provider Settings
+
+Provider credentials must not be stored or exported as plain config JSON. Follow
+the encrypted settings pattern in `src/services/backup-settings-crypto.ts`, or
+document a replacement design before changing it.
+
+### Bitwarden Client Compatibility
+
+Official Bitwarden clients may send or expect fields that are not used directly
+by the web vault. Cipher and sync changes should preserve unknown client fields
+unless they are known-invalid or server-owned.
+
+Check these files when changing vault item shape or sync behavior:
+
+- `src/handlers/ciphers.ts`
+- `src/handlers/sync.ts`
+- `src/services/storage-cipher-repo.ts`
+
+### Domain Rules
+
+Equivalent-domain settings store both client/UI rule state and derived active
+groups. Do not remove `equivalent_domains`, `custom_equivalent_domains`, or
+`excluded_global_equivalent_domains` as duplicates without a migration and
+compatibility plan.
+
+### Accounts And Passwords
+
+`users.master_password_hash` is for server-side login verification. It is not the
+vault decryption key. Password changes, key material, `securityStamp`, and
+refresh-token revocation must stay aligned.
+
+Password hints are reminders, not recovery secrets. They must never contain the
+master password, recovery codes, API keys, or anything that directly unlocks the
+vault.
+
+### i18n
+
+Locale files are complete standalone bundles. When adding or changing user-facing
+text, keep every locale in sync and run the validation script.
+
+For new locales, update:
+
+- `webapp/src/lib/i18n.ts`
+- `webapp/src/lib/i18n/locales/*`
+- `scripts/i18n-utils.cjs`
+
+## Recommended Checks
+
+For most backend or shared changes:
+
+```sh
+npx tsc -p tsconfig.json --noEmit
+npm run build
+```
+
+For webapp text or locale changes:
+
+```sh
+npm run i18n:validate
+npx tsc -p webapp/tsconfig.json --noEmit
+npm run build
+```
+
+For documentation-only changes:
+
+```sh
+git diff --check
+```

NodeWarden.svg

@@ -0,0 +1,19 @@
+<svg width="960" height="180" viewBox="0 0 1240 220" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <g transform="translate(0 30) scale(0.276)">
+    <path d="M370.5 93C481.785 93 572 181.2 572 290C572 329.877 559.879 366.986 539.046 398H1.68164C0.576599 391.834 0 385.484 0 379C0 323.617 42.0774 278.061 96.0078 272.558C92.7712 263.989 91 254.701 91 245C91 201.922 125.922 167 169 167C182.365 167 194.945 170.362 205.94 176.286C242.437 125.895 302.539 93 370.5 93Z" fill="#F6821F"/>
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+</svg>

README.md

@@ -1,108 +1,164 @@
-# NodeWarden
-中文文档：[`README_ZH.md`](./README_ZH.md)
+<p align="center">
+  <img src="./NodeWarden.svg" alt="NodeWarden Logo" />
+</p>
 
-A **Bitwarden-compatible** server that runs on **Cloudflare Workers**.
+<p align="center">
+  运行在 Cloudflare Workers 上的 Bitwarden 兼容服务端
+</p>
 
-- Simple deploy (no VPS)
-- Focused feature set
-- Low maintenance
+<p align="center">
+  <a href="https://workers.cloudflare.com/"><img src="https://img.shields.io/badge/Powered%20by-Cloudflare-F38020?logo=cloudflare&logoColor=white" alt="Powered by Cloudflare" /></a>
+  <a href="./LICENSE"><img src="https://img.shields.io/badge/License-LGPL--3.0-2ea44f" alt="License: LGPL-3.0" /></a>
+  <a href="https://github.com/shuaiplus/NodeWarden/releases/latest"><img src="https://img.shields.io/github/v/release/shuaiplus/NodeWarden?display_name=tag" alt="Latest Release" /></a>
+  <a href="https://github.com/shuaiplus/NodeWarden/actions/workflows/sync-upstream.yml"><img src="https://github.com/shuaiplus/NodeWarden/actions/workflows/sync-upstream.yml/badge.svg" alt="Sync Upstream" /></a>
+</p>
 
+<p align="center">
+  <a href="https://t.me/NodeWarden_News">Telegram 频道</a> |
+  <a href="https://t.me/NodeWarden_Official">Telegram 群组</a>
+</p>
 
-> Disclaimer
-> - This project is **not affiliated** with Bitwarden.
-> - Use at your own risk. Keep regular backups of your vault.
+<p align="center">
+  <a href="./README_EN.md">English</a> |
+  <a href="./CONTRIBUTING.md">贡献指南</a>
+</p>
+
+> **免责声明**  
+> 本项目仅供学习与交流使用，请定期备份你的密码库。  
+> 本项目与 Bitwarden 官方无关，请不要向 Bitwarden 官方反馈 NodeWarden 的问题。
 
 ---
 
-## Features
+## 与 Bitwarden 官方服务端能力对比
 
-- ✅ **Free to use. No server to manage.**
-- ✅ Full support for logins, notes, cards, and identities
-- ✅ Folders and favorites
-- ✅ Attachments (Cloudflare R2)
-- ✅ Import / export
-- ✅ Website icons
-- ✅ End-to-end encryption (the server can’t see plaintext)
-- ✅ Compatible with common Bitwarden official clients
-
-## Tested clients / platforms
-
-- ✅ Windows desktop client (v2026.1.0)
-- ✅ Android app (v2026.1.0)
-- ✅ Browser extension (v2026.1.0)
-- ⬜ macOS desktop client (not tested)
-- ⬜ Linux desktop client (not tested)
+| 能力 | Bitwarden | NodeWarden | 说明 |
+|---|---|---|---|
+| 网页密码库 | ✅ | ✅ | **原创Web Vault界面** |
+| 全量同步 `/api/sync` | ✅ | ✅ | 已针对官方客户端做兼容优化 |
+| 附件上传 / 下载 | ✅ | ✅ | Cloudflare R2 或 KV |
+| Send | ✅ | ✅ | 支持文本与文件 Send |
+| 导入 / 导出 | ✅ | ✅ | 支持 Bitwarden JSON / CSV / **ZIP 导入（包括附件）** |
+| **云端备份中心** | ❌ | ✅ | **支持 WebDAV / S3 定时备份** |
+| 密码提示（网页端） | ⚠️ 有限 | ✅ | **无需发送邮件** |
+| TOTP / Steam TOTP | ✅ | ✅ | 含 `steam://` 支持 |
+| 多用户 | ✅ | ✅ | 支持邀请码注册 |
+| 组织 / 集合 / 成员权限 | ✅ | ❌ | 未实现 |
+| 登录 2FA | ✅ | ⚠️ 部分支持 | 当前仅支持用户级 TOTP |
+| SSO / SCIM / 企业目录 | ✅ | ❌ | 未实现 |
 
 ---
 
-# Quick start
+## 已测试客户端
 
-### One-click deploy
+- ✅ Windows 桌面端
+- ✅ 手机 App
+- ✅ 浏览器扩展
+- ✅ Linux 桌面端
+- ⚠️ macOS 桌面端尚未完整验证
 
-[![Deploy to Cloudflare Workers](https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/shuaiplus/nodewarden)
+---
 
-**Deploy steps:**
+## 可视化快速部署
 
-1. Sign in with GitHub and authorize
-2. Sign in to Cloudflare
-3. **Important**: set `JWT_SECRET` to a strong random string (recommended: `openssl rand -hex 32`)
-4. D1 database and R2 bucket will be created automatically
-5. Click **Deploy** and wait for it to finish
-6. After deploy, open the Cloudflare-provided Workers URL (your service URL), and register on the web page
+1. Fork NodeWarden 仓库到自己的 GitHub 账号
+2. 进入 [Cloudflare Workers & Pages](https://dash.cloudflare.com/?to=/:account/workers-and-pages/create)
+3. 选择 Continue with GitHub 并选择你的仓库
+4. 构建命令填 `npm run build`，部署命令填 `npm run deploy`
+- 如果你打算用 KV 模式，把部署命令改成 `npm run deploy:kv`
+5. 等部署完成后，打开生成的 Workers 域名
 
-> ⚠️ **Reminder**: always use a strong random `JWT_SECRET`. Weak secrets may put your account at risk.
+- Workers 默认域名在部分网络环境不可直连。如需自定义域名，到 [Workers 设置](https://dash.cloudflare.com/?to=/:account/workers/services/view/nodewarden/production/settings)里添加。
 
-### Configure your client
+- 页面提示缺少 `JWT_SECRET` 时，到 Workers 设置里添加 Secret。正式环境至少使用 32 个字符以上的随机字符串，不要使用临时值或示例值。
 
-In any Bitwarden client:
+- 这套流程里，用户实际做的是把代码交给 Cloudflare 构建并部署。代码里的 `wrangler.toml` 或 `wrangler.kv.toml` 决定绑定名，Worker 第一次处理请求时会自动初始化 D1 schema，不需要用户上传 SQL。
 
-1. Open **Settings**
-2. Choose **Self-hosted environment**
-3. Set **Server URL** to your Worker URL (for example: `https://your-project.your-subdomain.workers.dev`)
-4. Save, then go back to the login screen
 
-## 🧑‍💻 Local development
+> [!TIP] 
+> 默认R2与可选KV的区别：
+>   | 储存 | 是否需绑卡 | 单个附件/Send文件上限 | 免费额度 |
+>   |---|---|---|---|
+>   | R2 | 需要 | 100 MB（软限制可更改） | 10 GB |
+>   | KV | 不需要 | 25 MiB（Cloudflare限制） | 1 GB |
 
-This repo is a Cloudflare Workers TypeScript project (Wrangler).
 
-```bash
+## 更新方法：
+- 手动：打开你 Fork 的 GitHub 仓库，看到顶部同步提示后，点击 `Sync fork` ➜ `Update branch`
+- 自动：进入你的 Fork 仓库 ➜ `Actions` ➜ `Sync upstream` ➜ `Enable workflow`，会在每天凌晨 3 点自动同步上游。
+
+
+
+## CLI 部署
+
+```powershell
+git clone https://github.com/shuaiplus/NodeWarden.git
+cd NodeWarden
+
 npm install
+npx wrangler login
+
+# 默认：R2 模式
+npm run deploy
+
+# 可选：KV 模式
+npm run deploy:kv
+
+# 本地开发
 npm run dev
+npm run dev:kv
 ```
 
 ---
 
-## Tech stack
+## 云端备份说明
 
-- **Runtime**: Cloudflare Workers
-- **Data storage**: Cloudflare D1 (SQLite)
-- **File storage**: Cloudflare R2
-- **Language**: TypeScript
-- **Crypto**: Client-side AES-256-CBC, JWT uses HS256
+- 远程备份支持 **WebDAV** 与 **E3**
+- 勾选“包含附件”后：
+  - ZIP 内仍只包含 `db.json` 与 `manifest.json`
+  - 真实附件单独存放在 `attachments/`
+  - 后续备份会按稳定 blob 名复用已有附件，不会每次全量重传
+- 远程还原时：
+  - 会从 `attachments/` 目录按需读取附件
+  - 缺失的附件会被安全跳过
+  - 被跳过的附件不会在恢复后的数据库中留下脏记录
 
 ---
 
-## FAQ
+## 导入 / 导出
 
-**Q: How do I back up my data?**  
-A: Use **Export vault** in your client and save the JSON file.
+当前支持的导入来源包括：
 
-**Q: What if I forget the master password?**  
-A: It can’t be recovered (end-to-end encryption). Keep it safe.
+- Bitwarden JSON
+- Bitwarden CSV
+- Bitwarden 密码库 + 附件 ZIP
+- NodeWarden JSON
+- 网页导入器里可见的多种浏览器 / 密码管理器格式
 
-**Q: Can multiple people use it?**  
-A: Not recommended. This project is designed for single-user usage.
+当前支持的导出方式包括：
+
+- Bitwarden JSON
+- Bitwarden 加密 JSON
+- 带附件的 ZIP 导出
+- NodeWarden JSON 系列
+- 备份中心中的实例级完整手动导出
 
 ---
 
-## License
+
+## 开源协议
 
 LGPL-3.0 License
 
 ---
 
-## Credits
+## 致谢
 
-- [Bitwarden](https://bitwarden.com/) - original design and clients
-- [Vaultwarden](https://github.com/dani-garcia/vaultwarden) - server implementation reference
-- [Cloudflare Workers](https://workers.cloudflare.com/) - serverless platform
+- [Bitwarden](https://bitwarden.com/) - 原始设计与客户端
+- [Vaultwarden](https://github.com/dani-garcia/vaultwarden) - 服务端实现参考
+- [Cloudflare Workers](https://workers.cloudflare.com/) - 无服务器平台
+
+---
+
+## Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=shuaiplus/NodeWarden&type=timeline&legend=top-left)](https://www.star-history.com/#shuaiplus/NodeWarden&type=timeline&legend=top-left)

README_EN.md

@@ -0,0 +1,152 @@
+<p align="center">
+  <img src="./NodeWarden.svg" alt="NodeWarden Logo" />
+</p>
+
+<p align="center">
+  Bitwarden-compatible server running on Cloudflare Workers
+
+</p>
+
+<p align="center">
+  <a href="https://workers.cloudflare.com/"><img src="https://img.shields.io/badge/Powered%20by-Cloudflare-F38020?logo=cloudflare&logoColor=white" alt="Powered by Cloudflare" /></a>
+  <a href="./LICENSE"><img src="https://img.shields.io/badge/License-LGPL--3.0-2ea44f" alt="License: LGPL-3.0" /></a>
+  <a href="https://github.com/shuaiplus/NodeWarden/releases/latest"><img src="https://img.shields.io/github/v/release/shuaiplus/NodeWarden?display_name=tag" alt="Latest Release" /></a>
+  <a href="https://github.com/shuaiplus/NodeWarden/actions/workflows/sync-upstream.yml"><img src="https://github.com/shuaiplus/NodeWarden/actions/workflows/sync-upstream.yml/badge.svg" alt="Sync Upstream" /></a>
+</p>
+
+<p align="center">
+  <a href="https://t.me/NodeWarden_News">Telegram Channel</a> |
+  <a href="https://t.me/NodeWarden_Official">Telegram Group</a>
+</p>
+
+<p align="center">
+  <a href="./README.md">中文说明</a> |
+  <a href="./CONTRIBUTING.md">Contributing</a>
+</p>
+
+> **Disclaimer**
+>
+> This project is for learning and discussion purposes only. Please back up your vault regularly.
+>
+> This project is not affiliated with Bitwarden. Please do not report NodeWarden issues to the official Bitwarden team.
+
+---
+
+## Feature Comparison with the Official Bitwarden Server
+
+| Capability | Bitwarden | NodeWarden | Notes |
+|---|---|---|---|
+| Web Vault | ✅ | ✅ | **Original Web Vault interface** |
+| Full sync `/api/sync` | ✅ | ✅ | Compatibility optimized for official clients |
+| Attachment upload / download | ✅ | ✅ | Cloudflare R2 or KV |
+| Send | ✅ | ✅ | Supports both text and file Sends |
+| Import / Export | ✅ | ✅ | Supports Bitwarden JSON / CSV / **ZIP import with attachments** |
+| **Cloud Backup Center** | ❌ | ✅ | **Scheduled backup to WebDAV / E3** |
+| Password hint (web) | ⚠️ Limited | ✅ | **No email required** |
+| TOTP / Steam TOTP | ✅ | ✅ | Includes `steam://` support |
+| Multi-user | ✅ | ✅ | Invite-based registration |
+| Organizations / Collections / Member roles | ✅ | ❌ | Not implemented |
+| Login 2FA | ✅ | ⚠️ Partial | Currently only user-level TOTP |
+| SSO / SCIM / Enterprise directory | ✅ | ❌ | Not implemented |
+
+---
+
+## Tested Clients
+
+- ✅ Windows desktop client
+- ✅ Mobile app
+- ✅ Browser extension
+- ✅ Linux desktop client
+- ⚠️ macOS desktop client has not been fully verified yet
+
+---
+
+## Web Deploy
+
+1. Fork this repository. If this project helps you, consider giving it a Star.
+2. Open [Workers](https://dash.cloudflare.com/?to=/:account/workers-and-pages/create) -> `Continue with GitHub` -> select your forked repository (`NodeWarden`) -> continue.
+3. R2 is used by default. If R2 is not enabled on your account, you can use KV instead by changing the **deploy command** to `npm run deploy:kv`.
+4. Deploy and open the generated URL.
+
+| Storage | Card required | Single attachment / Send file limit | Free tier |
+|---|---|---|---|
+| R2 | Yes | 100 MB (soft limit, adjustable) | 10 GB |
+| KV | No | 25 MiB (Cloudflare limit) | 1 GB |
+
+> [!TIP]
+> How to keep your fork updated:
+> - Manual: open your fork on GitHub, click `Sync fork`, then `Update branch`
+> - Automatic: go to your fork -> `Actions` -> `Sync upstream` -> `Enable workflow`; it will sync upstream automatically every day at 3 AM
+
+## CLI Deploy
+
+```powershell
+git clone https://github.com/shuaiplus/NodeWarden.git
+cd NodeWarden
+npm install
+npx wrangler login
+
+# Default: R2 mode
+npm run deploy
+
+# Optional: KV mode
+npm run deploy:kv
+
+# Local development
+npm run dev
+npm run dev:kv
+```
+
+---
+
+## Cloud Backup Notes
+
+- Remote backup supports **WebDAV** and **E3**
+- When `Include attachments` is enabled:
+- the ZIP still contains only `db.json` and `manifest.json`
+- actual attachment files are stored separately under `attachments/`
+- later backups reuse existing attachments by stable blob name instead of re-uploading everything every time
+- During remote restore:
+- required attachment files are loaded from `attachments/` on demand
+- missing attachments are skipped safely
+- skipped attachments do not leave broken rows in the restored database
+
+---
+
+## Import / Export
+
+Current supported import sources include:
+
+- Bitwarden JSON
+- Bitwarden CSV
+- Bitwarden vault + attachments ZIP
+- NodeWarden JSON
+- Multiple browser / password-manager formats available in the web import selector
+
+Current supported export formats include:
+
+- Bitwarden JSON
+- Bitwarden encrypted JSON
+- ZIP export with attachments
+- NodeWarden JSON variants
+- Full manual instance export from the backup center
+
+---
+
+## License
+
+LGPL-3.0 License
+
+---
+
+## Credits
+
+- [Bitwarden](https://bitwarden.com/) - Original design and clients
+- [Vaultwarden](https://github.com/dani-garcia/vaultwarden) - Server implementation reference
+- [Cloudflare Workers](https://workers.cloudflare.com/) - Serverless platform
+
+---
+
+## Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=shuaiplus/NodeWarden&type=timeline&legend=top-left)](https://www.star-history.com/#shuaiplus/NodeWarden&type=timeline&legend=top-left)

README_ZH.md

@@ -1,114 +0,0 @@
-
-# NodeWarden
-English：[`README.md`](./README.md)
-
-一个运行在 **Cloudflare Workers** 上的 **Bitwarden 兼容**服务端实现。
-
-- 部署简单（不需要 VPS）
-- 功能聚焦
-- 维护成本低
-
-
-
-> **免责声明**  
-> 本项目仅供学习交流使用。我们不对任何数据丢失负责，强烈建议定期备份您的密码库。  
-> 本项目与 Bitwarden 官方无关，请勿向 Bitwarden 官方反馈问题。
-
----
-
-## 特性
-- ✅ **完全免费，不需要在服务器上部署，再次感谢大善人！**
-- ✅ 完整的密码、笔记、卡片、身份信息管理
-- ✅ 文件夹和收藏功能
-- ✅ 文件附件支持（基于 R2 存储）
-- ✅ 导入/导出功能
-- ✅ 网站图标获取
-- ✅ 端到端加密（服务器无法查看明文）
-- ✅ 兼容常见的 Bitwarden 官方客户端
-
-## 测试情况：
-- ✅ Windows 客户端（v2026.1.0）
-- ✅ Android App（v2026.1.0）
-- ✅ 浏览器扩展（v2026.1.0）
-- ⬜ macOS 客户端（未测试）
-- ⬜ Linux 客户端（未测试）
----
-
-# 快速开始
-
-### 一键部署
-
-点击下方按钮部署到 Cloudflare Workers：
-
-[![Deploy to Cloudflare Workers](https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/shuaiplus/nodewarden)
-
-**部署步骤：**
-
-1. 使用 GitHub 登录并授权
-2. 登录 Cloudflare 账户
-3. **重要**：设置 `JWT_SECRET` 为强随机字符串（推荐使用 `openssl rand -hex 32` 生成）
-4. D1 数据库和 R2 存储桶将自动创建
-5. 点击 Deploy 等待部署完成
-6. 部署完成后，先打开 Cloudflare 给你的 Workers 链接（也就是你的服务地址），在网页上填写信息完成注册。
-
-> ⚠️ **再次提醒**：请务必使用强随机的 `JWT_SECRET`，使用默认或弱密钥可能导致账户被入侵，**后果自负！**
-
-### 配置客户端
-
-部署完成后，在任意 Bitwarden 客户端中：
-
-1. 打开设置（⚙️）
-2. 选择「自托管环境」
-3. 服务器 URL 填入：`https://你的项目名`
-4. 保存并返回登录页面
-
-
-
----
-
-## 本地开发
-
-这是一个 Cloudflare Workers 的 TypeScript 项目（Wrangler）。
-
-```bash
-npm install
-npm run dev
-```
-
----
-
-
-## 技术栈
-
-- **运行环境**：Cloudflare Workers
-- **数据存储**：Cloudflare D1（SQLite）
-- **文件存储**：Cloudflare R2
-- **开发语言**：TypeScript
-- **加密算法**：客户端 AES-256-CBC，JWT 使用 HS256
-
----
-
-## 常见问题
-
-**Q: 如何备份数据？**  
-A: 在客户端中选择「导出密码库」，保存 JSON 文件。
-
-**Q: 忘记主密码怎么办？**  
-A: 无法恢复，这是端到端加密的特性。建议妥善保管主密码。
-
-**Q: 可以多人使用吗？**  
-A: 不建议。本项目为单用户设计，多人使用请选择 Vaultwarden。
-
----
-
-## 开源协议
-
-LGPL-3.0 License
-
----
-
-## 致谢
-
-- [Bitwarden](https://bitwarden.com/) - 原始设计和客户端
-- [Vaultwarden](https://github.com/dani-garcia/vaultwarden) - 服务器实现参考
-- [Cloudflare Workers](https://workers.cloudflare.com/) - 无服务器平台

docs/passkey-login-research.md

@@ -0,0 +1,785 @@
+# NodeWarden Passkey 登录研究记录
+
+记录日期：2026-06-09  
+研究范围：NodeWarden 自己的 server、web 登录/注册链路，以及官方 Bitwarden server、web、browser extension 对账户 passkey 登录的实现方式。
+
+## 结论先放前面
+
+NodeWarden 现在已经有完整的主密码注册、主密码登录、刷新 token、2FA、设备记录、官方客户端兼容的 `UserDecryptionOptions`，也支持 vault item 里的 `login.fido2Credentials` 字段。但它还没有“账户 passkey 登录”。现有 `src/utils/passkey.ts` 只有 base64url、challenge、clientData 解析这类工具函数，不能完成 FIDO2/WebAuthn 服务端注册和认证验证。
+
+要支持“自己的 web 用 passkey 登录”和“官方/自定义浏览器扩展也能 passkey 登录”，不能只加一个登录按钮。必须补齐四块：
+
+1. Server 端新增账户 WebAuthn credential 表、challenge/token 防重放机制、FIDO2 attestation/assertion 验证、`grant_type=webauthn`。
+2. Server 响应里按 Bitwarden 形状返回 PRF 解密材料：登录 token 响应用单个 `UserDecryptionOptions.WebAuthnPrfOption`，sync 响应用多个 `UserDecryption.WebAuthnPrfOptions`。
+3. NodeWarden web 新增 passkey 注册、管理、登录和 PRF 解锁 vault key 的客户端流程。
+4. 扩展兼容要跟官方 Bitwarden endpoint 和 response shape 对齐。官方 browser extension 当前只在 Chromium 系浏览器开放 passkey 登录，因为 Firefox/Safari 扩展环境还不能按官方代码需要的方式覆盖 RP ID。
+
+下面按代码链路展开。
+
+## 术语边界
+
+这里有三个容易混淆的东西，文档后面严格区分：
+
+- 账户 passkey 登录：用户不用主密码，使用 WebAuthn/passkey 完成账号认证，并且用 PRF 解开 vault user key。官方 Bitwarden 叫 `WebAuthnLogin`。
+- Vault item 里的 passkey：某个登录条目保存网站 passkey/FIDO2 credential 数据，对应 NodeWarden 的 `cipher.login.fido2Credentials`。这是“保险库保存别的网站 passkey”，不是“登录 NodeWarden 账号”。
+- WebAuthn 2FA：主密码登录之后用安全密钥做第二因素。官方旧 web repo 里主要是这一类，不等于 passkey 登录。
+
+## NodeWarden 现状
+
+### 路由和入口
+
+NodeWarden 后端是 Cloudflare Workers + D1。主入口 `src/index.ts` 初始化存储后进入 router。认证边界在：
+
+- `src/router-public.ts`：公开接口，包含 `/identity/connect/token`、`/identity/accounts/prelogin`、`/api/accounts/register`。
+- `src/router-authenticated.ts`：需要 access token 的接口，包含 profile、change password、TOTP、sync、vault、devices。
+- `src/handlers/identity.ts`：OAuth/token 兼容入口。
+- `src/handlers/accounts.ts`：注册、profile、密码变更、TOTP、API key 等账户接口。
+
+目前公开路由没有：
+
+- `GET /identity/accounts/webauthn/assertion-options`
+- `POST /identity/connect/token` 的 `grant_type=webauthn`
+- `POST /api/webauthn/attestation-options`
+- `POST /api/webauthn/assertion-options`
+- `GET/POST/PUT /api/webauthn`
+
+### 注册链路
+
+NodeWarden 自己 web 的注册入口在 `webapp/src/lib/api/auth.ts` 的 `registerAccount()`：
+
+- 使用邮箱作为 salt，用 PBKDF2 派生 master key。
+- 再用 PBKDF2(masterKey, password, 1) 得到 client master password hash。
+- 随机生成 64 字节 vault symmetric key。
+- 用 masterKey 经 HKDF 拆成 enc/mac，把 vault key 加密成 Bitwarden `Key`。
+- 生成 RSA-OAEP key pair，把 private key 用 vault symmetric key 加密。
+- POST `/api/accounts/register`，提交 `email`、`name`、`masterPasswordHash`、`key`、KDF 参数、invite code、`keys.publicKey`、`keys.encryptedPrivateKey`。
+
+后端 `src/handlers/accounts.ts` 的 `handleRegister()`：
+
+- 第一个用户自动成为 admin，后续用户需要 invite。
+- 校验 `JWT_SECRET`、邮箱、KDF 下限、加密字符串形状、公钥/私钥。
+- 不直接保存 client hash，而是 `AuthService.hashPasswordServer(masterPasswordHash, email)` 后保存到 `users.master_password_hash`。
+- 保存 `users.key`、`users.private_key`、`users.public_key`、KDF 参数、`security_stamp`。
+
+结论：账户 passkey 注册不是替代账号注册，而是“用户已登录后在安全设置里新增一个可登录 credential”。仍然需要已有 vault user key 来生成 PRF keyset。
+
+### 主密码登录链路
+
+NodeWarden 自己 web 的登录入口是 `webapp/src/lib/app-auth.ts` 的 `performPasswordLogin()`：
+
+- 先 `deriveLoginHashLocally()` 得到 masterKey 和 client hash。
+- 调 `loginWithPassword()` POST `/identity/connect/token`。
+- token 成功后 `completeLogin()` 用 `token.Key` 和本地 masterKey 解开 vault key。
+- 保存离线解锁记录。
+
+`webapp/src/lib/api/auth.ts` 也有 `deriveLoginHash()` 和 `getPreloginKdfConfig()` 会调用 `/identity/accounts/prelogin`，但当前 `performPasswordLogin()` 走的是本地 fallback iterations。passkey 登录不应复用这条 masterKey 路径，因为 passkey 登录没有主密码，拿不到 password-derived masterKey。
+
+后端 `src/handlers/identity.ts` 的 `handleToken()` 当前支持：
+
+- `grant_type=password`
+- `grant_type=client_credentials`
+- `grant_type=refresh_token`
+
+密码登录成功后会：
+
+- 验证 IP 登录频率和用户状态。
+- `AuthService.verifyPassword()` 验证 client hash。
+- 处理 TOTP 或 remember 2FA token。
+- 记录/更新 device。
+- 生成 access token 和 refresh token。
+- 返回 `Key`、`PrivateKey`、`AccountKeys`、KDF 参数、`UserDecryptionOptions`。
+
+### UserDecryptionOptions 和 sync
+
+NodeWarden 的 `src/utils/user-decryption.ts` 当前只构造主密码解锁：
+
+- `HasMasterPassword: true`
+- `MasterPasswordUnlock`
+- `TrustedDeviceOption: null`
+- `KeyConnectorOption: null`
+
+`src/types/index.ts` 的 sync 类型里预留了 `UserDecryption.WebAuthnPrfOption?: null`，但当前 `src/handlers/sync.ts` 实际只返回 `MasterPasswordUnlock`，没有账户 passkey PRF 解密选项。
+
+passkey 登录必须新增两类 shape：
+
+- 登录 token 响应：`UserDecryptionOptions.WebAuthnPrfOption`，只返回本次认证所用 credential 的 PRF 解密材料。
+- sync 响应：`UserDecryption.WebAuthnPrfOptions`，返回该用户所有已启用 PRF keyset 的 passkey 解密材料，供官方客户端锁定/解锁和 key rotation 使用。
+
+### 现有 passkey 相关代码
+
+NodeWarden 已支持 vault item 里的 FIDO2/passkey 字段：
+
+- `src/types/index.ts`：`CipherLogin.fido2Credentials`
+- `src/handlers/ciphers.ts`：读写 cipher 时保留/规范化 `fido2Credentials`
+- `webapp/src/lib/api/vault.ts`：加密/解密 vault item 内的 `fido2Credentials`
+- `webapp/src/lib/types.ts`：`CipherLoginPasskey`
+
+这部分是“保存网站 passkey”，不是账户登录。
+
+`src/utils/passkey.ts` 只有：
+
+- `bytesToBase64Url()`
+- `base64UrlToBytes()`
+- `randomChallenge()`
+- `parseClientDataJSON()`
+
+缺少的核心能力：
+
+- attestation verification
+- assertion verification
+- authenticator public key 格式处理
+- signature verification
+- sign counter 更新
+- userHandle 与 user id 绑定验证
+- origin/RP ID 验证
+- challenge 过期和防重放
+
+### 数据库和备份影响
+
+NodeWarden schema 在这些地方需要同步：
+
+- `migrations/0001_init.sql`
+- `src/services/storage-schema.ts`
+- `wrangler.toml` migrations
+- `src/services/backup-archive.ts`
+- `src/services/backup-import.ts`
+- `shared/backup-schema` 相关类型
+
+当前表里没有账户 passkey credential，也没有 WebAuthn challenge 表。`devices` 表保存设备 trust/key 信息，不适合混入 passkey credential，因为 WebAuthn credential 需要自己的 public key、credential id、counter、AAGUID、PRF keyset 等字段。
+
+## 官方 Bitwarden server 参考
+
+上游代码位置：
+
+- `.codex-upstream/bitwarden-server`
+- 研究时 HEAD：`574f3fd`
+
+官方 server 里也有两个 WebAuthn 概念：
+
+- 传统 WebAuthn 2FA：`TwoFactorController`、`WebAuthnTokenProvider`
+- 账户 passkey 登录：`WebAuthnLogin`
+
+本项目要参考的是后者。
+
+### 公开 passkey 登录入口
+
+`src/Identity/Controllers/AccountsController.cs`
+
+- `GET /accounts/webauthn/assertion-options`
+- 返回 `WebAuthnLoginAssertionOptionsResponseModel`
+- response 包含：
+  - `options`
+  - `token`
+- token 使用 `WebAuthnLoginAssertionOptionsTokenable`
+- scope 为 `Authentication`
+- token 生命周期约 17 分钟
+
+`src/Identity/IdentityServer/RequestValidators/WebAuthnGrantValidator.cs`
+
+- 新增 OAuth extension grant：`grant_type=webauthn`
+- 从 form 读取：
+  - `token`
+  - `deviceResponse`
+- 解开 token，校验 scope 必须是 `Authentication`
+- 反序列化 `AuthenticatorAssertionRawResponse`
+- 调用 `AssertWebAuthnLoginCredential`
+- 把成功认证的 credential 传给 `UserDecryptionOptionsBuilder.WithWebAuthnLoginCredential(credential)`
+- 之后走通用登录成功逻辑，返回 access/refresh token 和账号加密状态。
+
+`src/Identity/IdentityServer/ApiClient.cs`
+
+- official identity client 的 allowed grant types 包含 `WebAuthnGrantValidator.GrantType`。
+
+`TwoFactorAuthenticationValidator` 里有一个重要行为：FIDO2 user verification 已经被视为第二因素，所以 passkey 登录成功后官方不会再要求额外 2FA。NodeWarden 之后需要明确策略：要兼容官方客户端，应把 passkey 登录视作已满足 2FA，否则官方 `LoginViaWebAuthnComponent` 会显示“不支持 passkey 2FA”的错误。
+
+### 账户 passkey 管理接口
+
+`src/Api/Auth/Controllers/WebAuthnController.cs`
+
+官方 authenticated API：
+
+- `GET /webauthn`：列出账户 passkey credentials。
+- `POST /webauthn/attestation-options`：主密码/secret verification 后生成 credential create options 和 token。
+- `POST /webauthn/assertion-options`：主密码/secret verification 后生成 assertion options 和 token，用于给已有 credential 启用/更新 PRF keyset。
+- `POST /webauthn`：保存新 credential。
+- `PUT /webauthn`：更新 credential 的 PRF encryption keyset。
+- `POST /webauthn/{id}/delete`：删除 credential。
+
+官方创建 credential 时保存：
+
+- `name`
+- `token`
+- `deviceResponse`
+- `supportsPrf`
+- 可选 `encryptedUserKey`
+- 可选 `encryptedPublicKey`
+- 可选 `encryptedPrivateKey`
+
+官方最多允许 5 个账户 passkey credentials。
+
+### 官方 WebAuthnCredential 表
+
+`src/Core/Auth/Entities/WebAuthnCredential.cs`
+
+字段：
+
+- `Id`
+- `UserId`
+- `Name`
+- `PublicKey`
+- `CredentialId`
+- `Counter`
+- `Type`
+- `AaGuid`
+- `EncryptedUserKey`
+- `EncryptedPrivateKey`
+- `EncryptedPublicKey`
+- `SupportsPrf`
+- `CreationDate`
+- `RevisionDate`
+
+SQLite migration：`util/SqliteMigrations/Migrations/20231213032045_WebAuthnLoginCredentials.cs`
+
+表名是 `WebAuthnCredential`，对 `User` 做 cascade delete，并按 `UserId` 建索引。
+
+`GetPrfStatus()`：
+
+- `Unsupported`：`SupportsPrf` 为 false。
+- `Supported`：credential 支持 PRF，但还没有完整 encrypted keyset。
+- `Enabled`：`EncryptedUserKey`、`EncryptedPrivateKey`、`EncryptedPublicKey` 都存在。
+
+### 官方创建和认证策略
+
+`GetWebAuthnLoginCredentialCreateOptionsCommand.cs`
+
+- 使用 Fido2NetLib。
+- `user.id` 是用户 id bytes。
+- `user.name/displayName` 使用用户邮箱。
+- 排除当前用户已有 credential ids。
+- `residentKey: required`
+- `userVerification: required`
+- `attestation: none`
+
+`GetWebAuthnLoginCredentialAssertionOptionsCommand.cs`
+
+- `allowCredentials` 传空数组。
+- `userVerification: required`
+- 空 allow list 代表使用 discoverable credentials，也就是 passkey 登录页可以不先输入邮箱。
+
+`CreateWebAuthnLoginCredentialCommand.cs`
+
+- 限制每用户最多 5 个。
+- 检查 credential id 在该用户下不能重复。
+- FIDO `MakeNewCredentialAsync` 验证 attestation。
+- 保存 credential id/public key/counter/type/AAGUID/PRF keyset。
+
+`AssertWebAuthnLoginCredentialCommand.cs`
+
+- 先用 challenge cache 防重放。
+- 从 assertion response 的 `userHandle` 解析出 user id。
+- 加载该用户所有 WebAuthn credentials。
+- 用 credential id 找到记录。
+- FIDO `MakeAssertionAsync` 验证签名、challenge、origin、RP ID、user verification。
+- 成功后更新 counter。
+
+### 官方 PRF 解密协议
+
+`src/Core/Auth/Models/Api/Response/UserDecryptionOptions.cs`
+
+`WebAuthnPrfDecryptionOption` 字段：
+
+- `EncryptedPrivateKey`
+- `EncryptedUserKey`
+- `CredentialId`
+- `Transports`
+
+`src/Identity/IdentityServer/UserDecryptionOptionsBuilder.cs`
+
+- `WithWebAuthnLoginCredential()` 只在 credential 的 PRF status 是 `Enabled` 时加入 `WebAuthnPrfOption`。
+- 如果 credential 没有 PRF keyset，passkey 只能认证账号，不能解开 vault。
+
+`src/Api/Vault/Models/Response/SyncResponseModel.cs`
+
+- sync response 会把所有 enabled PRF credentials 放进 `UserDecryption.WebAuthnPrfOptions`。
+
+## 官方 Bitwarden web/browser client 参考
+
+上游代码位置：
+
+- `.codex-upstream/bitwarden-clients`
+- `.codex-upstream/bitwarden-browser`
+- 两者研究时 HEAD 都是 `825f9be`，browser repo 内容和 clients monorepo 对应。
+
+旧的 `.codex-upstream/bitwarden-web` 主要有 WebAuthn connector 和 2FA 设置页，没有现代账户 passkey 登录主流程。账户 passkey 登录应以 `bitwarden-clients` 为准。
+
+### 登录按钮可见性
+
+`libs/auth/src/angular/login/default-login-component.service.ts`
+
+- 默认只对 `ClientType.Web` 开启 passkey 登录。
+
+`apps/browser/src/auth/popup/login/extension-login-component.service.ts`
+
+- browser extension 覆盖逻辑：只对 Chromium 开启。
+- 注释说明 Firefox 和 Safari 不能在扩展里覆盖 relying party ID。
+- 官方代码引用了 W3C webextensions issue 238、Mozilla bug 1956484、Apple forum thread 774351。
+
+结论：NodeWarden 后端即使完全兼容官方 passkey API，官方扩展也只有 Chromium 系会显示 passkey 登录入口。
+
+### Passkey 登录页
+
+`libs/angular/src/auth/login-via-webauthn/login-via-webauthn.component.ts`
+
+流程：
+
+1. 进入 `/login-with-passkey` 后自动开始认证。
+2. 调 `webAuthnLoginService.getCredentialAssertionOptions()`。
+3. 调 `webAuthnLoginService.assertCredential(options)` 触发 `navigator.credentials.get()`。
+4. 调 `webAuthnLoginService.logIn(assertion)` 走 identity token grant。
+5. 如果 `authResult.requiresTwoFactor` 为 true，显示“客户端不支持 passkey 2FA”错误。
+6. 只有本地 `keyService.userKey$(authResult.userId)` 已经拿到 user key，才运行 login success handler。
+7. 成功路由：
+   - Web：`/vault`
+   - Browser：`/tabs/vault`
+   - Desktop：`/vault`
+
+Browser popout 下还会在成功后重新打开普通 popup 并关闭 popout。
+
+### 客户端 passkey 登录请求
+
+`libs/common/src/auth/services/webauthn-login/webauthn-login-api.service.ts`
+
+- GET `${identityUrl}/accounts/webauthn/assertion-options`
+- 如果 NodeWarden 的 identityUrl 是站点 origin + `/identity`，实际路径就是 `/identity/accounts/webauthn/assertion-options`。
+
+`libs/common/src/auth/services/webauthn-login/webauthn-login.service.ts`
+
+- `navigator.credentials.get({ publicKey: options })`
+- 会主动加 PRF extension：
+  - salt 是 `SHA-256("passwordless-login")`
+  - extension shape 是 `extensions.prf.eval.first`
+- 从 `credential.getClientExtensionResults().prf.results.first` 取 PRF 输出。
+- 用 `WebAuthnLoginPrfKeyService.createSymmetricKeyFromPrf()` 转成 PRF key。
+- 构造 `WebAuthnLoginAssertionResponseRequest`。
+- 明确检查 `deviceResponse.extensions` 里不能含 `prf`，避免把 PRF 输出泄漏给服务端。
+
+`libs/common/src/auth/services/webauthn-login/webauthn-login-prf-key.service.ts`
+
+- salt 常量：`passwordless-login`
+- 先 SHA-256。
+- 再用 HKDF expand 拆成 64 字节：
+  - `"enc"` 32 bytes
+  - `"mac"` 32 bytes
+
+`libs/common/src/auth/models/request/identity-token/webauthn-login-token.request.ts`
+
+form encoded token 请求字段：
+
+- `grant_type=webauthn`
+- `token=<server assertion options token>`
+- `deviceResponse=<JSON string>`
+- 还会带 common device request 字段。
+
+`libs/common/src/auth/services/webauthn-login/request/webauthn-login-assertion-response.request.ts`
+
+`deviceResponse` shape：
+
+- `id`
+- `rawId`
+- `type`
+- `extensions: {}`
+- `response.authenticatorData`
+- `response.signature`
+- `response.clientDataJSON`
+- `response.userHandle`
+
+全部二进制字段使用 base64url。
+
+### 客户端如何用 PRF 解 vault key
+
+`libs/auth/src/common/login-strategies/webauthn-login.strategy.ts`
+
+- `setMasterKey()` 是空实现，因为 passkey 登录没有主密码 masterKey。
+- `setUserKey()`：
+  - 如果 token response 有 `key`，保存为 master-key-encrypted user key，兼容主密码解锁。
+  - 如果 `userDecryptionOptions.webAuthnPrfOption` 存在，且本地 assertion 得到了 `prfKey`：
+    1. 用 PRF key unwrap `encryptedPrivateKey`。
+    2. 用 private key decapsulate `encryptedUserKey`。
+    3. 得到 user key，写入 `keyService`。
+
+核心约束：服务端永远看不到 PRF 输出。服务端只保存和返回被 PRF 相关密钥加密后的 keyset。
+
+### 官方 web 设置页注册 passkey
+
+`apps/web/src/app/auth/core/services/webauthn-login/webauthn-login-admin-api.service.ts`
+
+调用的 API：
+
+- `POST /webauthn/attestation-options`
+- `POST /webauthn/assertion-options`
+- `POST /webauthn`
+- `GET /webauthn`
+- `POST /webauthn/{id}/delete`
+- `PUT /webauthn`
+
+`apps/web/src/app/auth/core/services/webauthn-login/webauthn-login-admin.service.ts`
+
+创建流程：
+
+1. 用户做 secret verification。
+2. 请求 attestation options。
+3. `navigator.credentials.create({ publicKey: options })`，并带 `extensions.prf = {}`。
+4. 从 client extension results 判断 `supportsPrf`。
+5. 如果要用于 vault encryption，再立即做一次 `navigator.credentials.get()`：
+   - `allowCredentials` 锁定刚创建的 credential。
+   - 使用同一个 challenge、rpId、timeout、userVerification。
+   - 带 PRF eval salt。
+6. 用 PRF key 和当前 user key 创建 rotateable keyset。
+7. 保存 credential，带上 `encryptedUserKey`、`encryptedPublicKey`、`encryptedPrivateKey`。
+
+删除流程需要 secret verification。启用 encryption 的流程是对已有 credential 做 assertion，再创建并 PUT keyset。
+
+`apps/web/src/app/auth/core/enums/webauthn-login-credential-prf-status.enum.ts`
+
+- `Enabled = 0`
+- `Supported = 1`
+- `Unsupported = 2`
+
+## NodeWarden 应实现的协议形状
+
+### 公开登录流程
+
+目标兼容官方客户端和 NodeWarden 自己 web：
+
+1. `GET /identity/accounts/webauthn/assertion-options`
+   - 生成 discoverable credential assertion options。
+   - `allowCredentials: []`
+   - `userVerification: "required"`
+   - 返回 `{ options, token }`。
+   - token 绑定 challenge、scope=`Authentication`、RP ID、origin/audience、过期时间。
+
+2. Browser/web 调 `navigator.credentials.get()`。
+   - NodeWarden 自己 web 也要使用 PRF extension。
+   - PRF salt 必须和官方一致：`SHA-256("passwordless-login")`。
+
+3. `POST /identity/connect/token`
+   - 支持 `grant_type=webauthn`。
+   - 接收 `token`、`deviceResponse`、device fields。
+   - 解 token，校验 challenge/scope/过期。
+   - 验证 assertion。
+   - 从 `userHandle` 找到 user id。
+   - 从 credential id 找到 passkey record。
+   - 更新 counter。
+   - 记录/更新 device。
+   - 返回 access/refresh token、`AccountKeys`、`UserDecryptionOptions.WebAuthnPrfOption`。
+
+如果用户启用了 TOTP，建议为了官方兼容先遵循 Bitwarden：passkey 的 user verification 视作已满足第二因素。否则官方 passkey 登录页会进入 unsupported 2FA 错误状态。
+
+### 账户 passkey 管理流程
+
+建议对齐官方 API，同时在 NodeWarden 内部可挂到 `/api/webauthn`：
+
+- `GET /api/webauthn`
+- `POST /api/webauthn/attestation-options`
+- `POST /api/webauthn/assertion-options`
+- `POST /api/webauthn`
+- `PUT /api/webauthn`
+- `POST /api/webauthn/:id/delete`
+
+为了官方客户端兼容，可能还需要接受无 `/api` 前缀的 aliases：
+
+- `/webauthn`
+- `/webauthn/attestation-options`
+- `/webauthn/assertion-options`
+- `/webauthn/:id/delete`
+
+NodeWarden 自己 web 可以直接用 `/api/webauthn`，官方 web/browser 客户端会按它自己的 API base 组装 `/webauthn`。
+
+### 建议新增表
+
+按 NodeWarden 命名风格，建议用小写 snake_case：
+
+```sql
+CREATE TABLE IF NOT EXISTS webauthn_credentials (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  public_key TEXT NOT NULL,
+  credential_id TEXT NOT NULL,
+  counter INTEGER NOT NULL DEFAULT 0,
+  type TEXT,
+  aa_guid TEXT,
+  transports TEXT,
+  encrypted_user_key TEXT,
+  encrypted_public_key TEXT,
+  encrypted_private_key TEXT,
+  supports_prf INTEGER NOT NULL DEFAULT 0,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_webauthn_credentials_user_credential
+  ON webauthn_credentials(user_id, credential_id);
+
+CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user
+  ON webauthn_credentials(user_id);
+```
+
+如果要更严格防止同一个 credential id 被跨用户重复注册，也可以加全局 unique index `credential_id`。官方代码至少检查同用户唯一；实际安全上更建议全局唯一，因为 credential id 本身应该唯一标识 authenticator credential。
+
+PRF status 不必落库为枚举，可以由字段计算：
+
+- `supports_prf = 0` => `Unsupported`
+- `supports_prf = 1` 且三段 encrypted key 不全 => `Supported`
+- `supports_prf = 1` 且三段 encrypted key 全存在 => `Enabled`
+
+### Challenge/token 存储
+
+官方 server 用 protected token 携带 options，再用 challenge cache 防重放。NodeWarden 在 Workers/D1 里建议组合：
+
+- token：HMAC/JWT 样式，绑定 `scope`、`challenge`、`userId?`、`rpId`、`createdAt`、`expiresAt`。
+- D1 表或 KV：记录 challenge 是否使用过，至少字段 `challenge_hash`、`scope`、`user_id`、`expires_at`、`used_at`。
+- 登录 assertion options 是公开接口，不绑定 user id；create/update/delete 管理流程应绑定 user id。
+- 验证成功后立即 mark used。
+
+建议 scopes：
+
+- `Authentication`
+- `CreateCredential`
+- `UpdateKeySet`
+
+官方还有 `PrfRegistration` 语义，NodeWarden 可以用 `CreateCredential` 覆盖，只要 token 逻辑严谨即可。
+
+### 服务端 WebAuthn 验证库
+
+NodeWarden 当前没有 FIDO2/WebAuthn 服务端验证依赖。不要手写签名和 attestation 解析。
+
+候选：`@simplewebauthn/server`。官方文档当前说明它提供 `generateRegistrationOptions`、`verifyRegistrationResponse`、`generateAuthenticationOptions`、`verifyAuthenticationResponse`，并记录了 RP ID、origin、credential public key、counter、transports 等数据结构。文档地址：https://simplewebauthn.dev/docs/packages/server
+
+注意：NodeWarden 跑在 Cloudflare Workers，不是普通 Node server。正式选库前需要做一次构建/runtime 验证，确认包不会依赖 Workers 不支持的 Node API。这个验证属于实现阶段，不在本研究文档里写测试程序。
+
+## NodeWarden web 需要改的地方
+
+### 登录页
+
+当前登录 UI 在 `webapp/src/components/AuthViews.tsx`，状态和行为主要由 `webapp/src/App.tsx`、`webapp/src/lib/app-auth.ts` 管。
+
+新增：
+
+- 登录页增加“使用 passkey 登录”按钮。
+- 新增 `performPasskeyLogin()`：
+  1. GET `/identity/accounts/webauthn/assertion-options`
+  2. 转换 server options 里的 base64url challenge/user id/credential id 为 ArrayBuffer。
+  3. `navigator.credentials.get()`，带 PRF salt。
+  4. POST `/identity/connect/token`，`grant_type=webauthn`。
+  5. 从 response 的 `UserDecryptionOptions.WebAuthnPrfOption` 取 encrypted keyset。
+  6. 用本地 PRF key 解出 user key。
+  7. 构造 `SessionState` 并进入 app。
+
+不能复用 `completeLogin(token, email, masterKey, fallbackKdfIterations)`，因为它要求 masterKey。应新增 passkey 专用 complete 函数。
+
+### 设置页
+
+当前账户/安全相关 UI 在 `webapp/src/components/SettingsPage.tsx` 一带。
+
+新增：
+
+- Passkey 列表。
+- 新建 passkey dialog。
+- 删除 passkey。
+- 对支持 PRF 但未启用 encryption 的 passkey，提供“启用用于登录解锁”的操作。
+
+自己 web 的新建流程要和官方一致：
+
+1. 已登录状态下先验证主密码或现有 session secret。
+2. 请求 attestation options。
+3. `navigator.credentials.create()` 带 `extensions.prf = {}`。
+4. 如果用户希望这个 passkey 可直接解锁 vault，再对刚创建 credential 做一次 `navigator.credentials.get()` 获取 PRF 输出。
+5. 用 PRF key 加密/封装当前 user key，发送到 server 保存。
+
+### 客户端加密能力
+
+NodeWarden web 当前已经有：
+
+- PBKDF2
+- HKDF expand
+- Bitwarden EncString 加解密
+- RSA-OAEP private key 加密
+
+但 passkey PRF keyset 需要和官方策略对齐：
+
+- PRF key 是 64 字节 symmetric key，前 32 enc、后 32 mac。
+- `encryptedPrivateKey` 用 PRF key wrap 一个 decapsulation private key。
+- `encryptedUserKey` 用对应 public key encapsulate user key。
+- `encryptedPublicKey` 用于 key rotation。
+
+这里需要认真复用或补齐 NodeWarden 现有 crypto helper，避免做出和官方客户端无法互解的 keyset。
+
+## 扩展兼容要求
+
+### 官方 browser extension
+
+官方 extension passkey 登录入口在：
+
+- `apps/browser/src/auth/popup/login/extension-login-component.service.ts`
+- 只在 Chromium 开启。
+
+如果要官方/派生扩展能对 NodeWarden passkey 登录：
+
+- identity URL 必须能访问 `/accounts/webauthn/assertion-options`。
+- token URL 必须支持 `grant_type=webauthn`。
+- API URL 必须能访问 `/webauthn` 管理接口。
+- response 大小写和字段名要同时照顾 PascalCase/camelCase，NodeWarden 当前 token response 已经在一些字段上双写，这个风格应继续沿用。
+- passkey 登录成功时必须返回可解开 vault 的 `webAuthnPrfOption`，否则官方组件虽然认证成功，也不会进入可用 vault。
+
+### RP ID 和 origin
+
+自己的 web：
+
+- RP ID 通常是站点 host，例如 `vault.example.com`。
+- origin 是 `https://vault.example.com`。
+
+官方 browser extension：
+
+- 扩展页面 origin 是 `chrome-extension://...`。
+- 官方之所以只开 Chromium，是因为 Chromium extension 具备它需要的 RP ID 覆盖能力。
+- NodeWarden server 验证 assertion 时必须允许正确的 origin/RP ID 组合。这里不能简单只接受当前 request origin，否则扩展登录会失败。
+
+建议配置化：
+
+- `WEBAUTHN_RP_ID`
+- `WEBAUTHN_RP_NAME`
+- `WEBAUTHN_ALLOWED_ORIGINS`
+
+默认可以从 request URL 推导 web origin，但生产建议显式配置。
+
+## 安全约束
+
+- 所有账户 passkey 必须 `userVerification: required`。
+- 登录 assertion 使用 discoverable credential，`userHandle` 必须能解析成 user id 并和 credential 记录一致。
+- challenge 必须有过期时间和一次性使用标记。
+- PRF 输出绝不能传给 server，也不能写入日志。
+- token 里要绑定 scope，防止 attestation token 被拿去 authentication 用。
+- counter 要更新。遇到 counter 异常时至少记录 audit event，是否阻断要结合 multi-device passkey 现实处理。
+- 每用户 credential 数量限制建议沿用官方 5 个。
+- 删除/新增/启用 encryption 必须要求已登录用户二次验证。
+- 密码变更、user key rotation 后，所有 enabled PRF credentials 的 keyset 也要 rotation，否则 passkey 登录会解不开新 vault key。
+- 备份导出/导入必须包含账户 passkey 表，否则恢复后 passkey 登录会全部失效。
+- 审计日志建议新增：
+  - `auth.passkey.login.success`
+  - `auth.passkey.login.failed`
+  - `account.passkey.create`
+  - `account.passkey.delete`
+  - `account.passkey.encryption.enable`
+  - `account.passkey.rotate`
+
+## 建议实施顺序
+
+### 第一阶段：后端基础
+
+1. 新增 `webauthn_credentials` 和 challenge 表。
+2. 新增 storage repo。
+3. 接入 WebAuthn 服务端验证库。
+4. 实现 assertion options 和 `grant_type=webauthn`。
+5. token response 加 `WebAuthnPrfOption` shape。
+
+这阶段先能让“已有手工塞入的 enabled credential”完成登录验证，但还不做 UI。
+
+### 第二阶段：账户 passkey 管理 API
+
+1. 实现 `/api/webauthn` 和 `/webauthn` aliases。
+2. 实现 attestation options、save credential、list、delete、enable/update encryption。
+3. 加 audit event。
+4. 接入 backup export/import。
+5. sync response 加 `WebAuthnPrfOptions`。
+
+### 第三阶段：NodeWarden 自己 web
+
+1. 登录页 passkey 按钮和 `performPasskeyLogin()`。
+2. Passkey 设置页。
+3. PRF keyset 创建、保存、删除、启用 encryption。
+4. 浏览器能力判断和错误提示。
+
+### 第四阶段：扩展兼容
+
+1. 用官方 browser extension 的 Chromium passkey 登录流程校对 endpoint。
+2. 校对 `/config` 里 identity/api/web vault URL。
+3. 校对 RP ID、allowed origins。
+4. 必要时加兼容字段或 alias route。
+
+按用户要求，本阶段只需要代码跑通不报错；不在这里写可视化测试或测试程序。
+
+## 待实现清单
+
+- [ ] 设计并落库 `webauthn_credentials`。
+- [ ] 设计并落库 WebAuthn challenge/replay cache。
+- [ ] 选定并验证 Workers 可用的 WebAuthn server library。
+- [ ] `GET /identity/accounts/webauthn/assertion-options`。
+- [ ] `POST /identity/connect/token` 支持 `grant_type=webauthn`。
+- [ ] `UserDecryptionOptions.WebAuthnPrfOption`。
+- [ ] `UserDecryption.WebAuthnPrfOptions`。
+- [ ] `/api/webauthn` 管理接口。
+- [ ] `/webauthn` 官方客户端 alias。
+- [ ] NodeWarden web passkey 登录入口。
+- [ ] NodeWarden web passkey 管理页。
+- [ ] key rotation 时同步 rotate PRF keysets。
+- [ ] backup export/import 覆盖新表。
+- [ ] audit logs 覆盖 passkey 管理和登录。
+
+## 关键文件索引
+
+NodeWarden：
+
+- `src/router-public.ts`
+- `src/router-authenticated.ts`
+- `src/handlers/accounts.ts`
+- `src/handlers/identity.ts`
+- `src/handlers/sync.ts`
+- `src/services/auth.ts`
+- `src/services/storage-schema.ts`
+- `src/services/storage-user-repo.ts`
+- `src/services/storage-device-repo.ts`
+- `src/utils/passkey.ts`
+- `src/utils/user-decryption.ts`
+- `src/types/index.ts`
+- `webapp/src/lib/api/auth.ts`
+- `webapp/src/lib/app-auth.ts`
+- `webapp/src/components/AuthViews.tsx`
+- `webapp/src/components/SettingsPage.tsx`
+
+Bitwarden server：
+
+- `.codex-upstream/bitwarden-server/src/Identity/Controllers/AccountsController.cs`
+- `.codex-upstream/bitwarden-server/src/Identity/IdentityServer/RequestValidators/WebAuthnGrantValidator.cs`
+- `.codex-upstream/bitwarden-server/src/Identity/IdentityServer/ApiClient.cs`
+- `.codex-upstream/bitwarden-server/src/Api/Auth/Controllers/WebAuthnController.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/Entities/WebAuthnCredential.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/UserFeatures/WebAuthnLogin/Implementations/GetWebAuthnLoginCredentialCreateOptionsCommand.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/UserFeatures/WebAuthnLogin/Implementations/GetWebAuthnLoginCredentialAssertionOptionsCommand.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/UserFeatures/WebAuthnLogin/Implementations/CreateWebAuthnLoginCredentialCommand.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/UserFeatures/WebAuthnLogin/Implementations/AssertWebAuthnLoginCredentialCommand.cs`
+- `.codex-upstream/bitwarden-server/src/Core/Auth/Models/Api/Response/UserDecryptionOptions.cs`
+- `.codex-upstream/bitwarden-server/util/SqliteMigrations/Migrations/20231213032045_WebAuthnLoginCredentials.cs`
+
+Bitwarden clients/browser：
+
+- `.codex-upstream/bitwarden-clients/libs/auth/src/angular/login/default-login-component.service.ts`
+- `.codex-upstream/bitwarden-clients/apps/browser/src/auth/popup/login/extension-login-component.service.ts`
+- `.codex-upstream/bitwarden-clients/libs/angular/src/auth/login-via-webauthn/login-via-webauthn.component.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/services/webauthn-login/webauthn-login-api.service.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/services/webauthn-login/webauthn-login.service.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/services/webauthn-login/webauthn-login-prf-key.service.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/models/request/identity-token/webauthn-login-token.request.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/services/webauthn-login/request/webauthn-login-response.request.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/services/webauthn-login/request/webauthn-login-assertion-response.request.ts`
+- `.codex-upstream/bitwarden-clients/libs/auth/src/common/login-strategies/webauthn-login.strategy.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/services/webauthn-login/webauthn-login-admin-api.service.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/services/webauthn-login/webauthn-login-admin.service.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/services/webauthn-login/request/save-credential.request.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/services/webauthn-login/request/enable-credential-encryption.request.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/services/webauthn-login/request/webauthn-login-attestation-response.request.ts`
+- `.codex-upstream/bitwarden-clients/apps/web/src/app/auth/core/enums/webauthn-login-credential-prf-status.enum.ts`
+- `.codex-upstream/bitwarden-clients/libs/common/src/auth/models/response/user-decryption-options/webauthn-prf-decryption-option.response.ts`
+- `.codex-upstream/bitwarden-clients/libs/auth/src/common/models/domain/user-decryption-options.ts`
+

migrations/0001_init.sql

@@ -1,5 +1,15 @@
 PRAGMA foreign_keys = ON;
 
+-- IMPORTANT:
+-- This is the initial D1 schema. Keep it in sync with
+-- src/services/storage-schema.ts (SCHEMA_STATEMENTS).
+-- Any new table/column/index must be added to both places together.
+--
+-- WHEN CHANGING THIS:
+-- - Also bump STORAGE_SCHEMA_VERSION in src/services/storage.ts.
+-- - If the new table stores persistent data, update backup export/import.
+-- - Keep src/services/storage-schema.ts idempotent for existing installs.
+
 CREATE TABLE IF NOT EXISTS config (
   key TEXT PRIMARY KEY,
   value TEXT NOT NULL
@@ -9,6 +19,7 @@ CREATE TABLE IF NOT EXISTS users (
   id TEXT PRIMARY KEY,
   email TEXT NOT NULL UNIQUE,
   name TEXT,
+  master_password_hint TEXT,
   master_password_hash TEXT NOT NULL,
   key TEXT NOT NULL,
   private_key TEXT,
@@ -18,10 +29,25 @@ CREATE TABLE IF NOT EXISTS users (
   kdf_memory INTEGER,
   kdf_parallelism INTEGER,
   security_stamp TEXT NOT NULL,
+  role TEXT NOT NULL DEFAULT 'user',
+  status TEXT NOT NULL DEFAULT 'active',
+  verify_devices INTEGER NOT NULL DEFAULT 1,
+  totp_secret TEXT,
+  totp_recovery_code TEXT,
+  api_key TEXT,
   created_at TEXT NOT NULL,
   updated_at TEXT NOT NULL
 );
 
+CREATE TABLE IF NOT EXISTS domain_settings (
+  user_id TEXT PRIMARY KEY,
+  equivalent_domains TEXT NOT NULL DEFAULT '[]',
+  custom_equivalent_domains TEXT NOT NULL DEFAULT '[]',
+  excluded_global_equivalent_domains TEXT NOT NULL DEFAULT '[]',
+  updated_at TEXT NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
 -- Per-user sync revision date
 CREATE TABLE IF NOT EXISTS user_revisions (
   user_id TEXT PRIMARY KEY,
@@ -42,11 +68,15 @@ CREATE TABLE IF NOT EXISTS ciphers (
   key TEXT,
   created_at TEXT NOT NULL,
   updated_at TEXT NOT NULL,
+  archived_at TEXT,
   deleted_at TEXT,
   FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );
 CREATE INDEX IF NOT EXISTS idx_ciphers_user_updated ON ciphers(user_id, updated_at);
+CREATE INDEX IF NOT EXISTS idx_ciphers_user_archived ON ciphers(user_id, archived_at);
 CREATE INDEX IF NOT EXISTS idx_ciphers_user_deleted ON ciphers(user_id, deleted_at);
+CREATE INDEX IF NOT EXISTS idx_ciphers_user_deleted_updated ON ciphers(user_id, deleted_at, updated_at);
+CREATE INDEX IF NOT EXISTS idx_ciphers_user_folder ON ciphers(user_id, folder_id);
 
 CREATE TABLE IF NOT EXISTS folders (
   id TEXT PRIMARY KEY,
@@ -69,26 +99,152 @@ CREATE TABLE IF NOT EXISTS attachments (
 );
 CREATE INDEX IF NOT EXISTS idx_attachments_cipher ON attachments(cipher_id);
 
+CREATE TABLE IF NOT EXISTS sends (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  type INTEGER NOT NULL,
+  name TEXT NOT NULL,
+  notes TEXT,
+  data TEXT NOT NULL,
+  key TEXT NOT NULL,
+  password_hash TEXT,
+  password_salt TEXT,
+  password_iterations INTEGER,
+  auth_type INTEGER NOT NULL DEFAULT 2,
+  emails TEXT,
+  max_access_count INTEGER,
+  access_count INTEGER NOT NULL DEFAULT 0,
+  disabled INTEGER NOT NULL DEFAULT 0,
+  hide_email INTEGER,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  expiration_date TEXT,
+  deletion_date TEXT NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_sends_user_updated ON sends(user_id, updated_at);
+CREATE INDEX IF NOT EXISTS idx_sends_user_deletion ON sends(user_id, deletion_date);
+CREATE INDEX IF NOT EXISTS idx_sends_user_updated_id ON sends(user_id, updated_at, id);
+
 CREATE TABLE IF NOT EXISTS refresh_tokens (
   token TEXT PRIMARY KEY,
   user_id TEXT NOT NULL,
   expires_at INTEGER NOT NULL,
+  device_identifier TEXT,
+  device_session_stamp TEXT,
   FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );
 CREATE INDEX IF NOT EXISTS idx_refresh_tokens_user ON refresh_tokens(user_id);
 
+CREATE TABLE IF NOT EXISTS invites (
+  code TEXT PRIMARY KEY,
+  created_by TEXT NOT NULL,
+  used_by TEXT,
+  expires_at TEXT NOT NULL,
+  status TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE CASCADE,
+  FOREIGN KEY (used_by) REFERENCES users(id) ON DELETE SET NULL
+);
+CREATE INDEX IF NOT EXISTS idx_invites_status_expires ON invites(status, expires_at);
+CREATE INDEX IF NOT EXISTS idx_invites_created_by ON invites(created_by, created_at);
+
+CREATE TABLE IF NOT EXISTS audit_logs (
+  id TEXT PRIMARY KEY,
+  actor_user_id TEXT,
+  action TEXT NOT NULL,
+  category TEXT NOT NULL DEFAULT 'system',
+  level TEXT NOT NULL DEFAULT 'info',
+  target_type TEXT,
+  target_id TEXT,
+  metadata TEXT,
+  created_at TEXT NOT NULL,
+  FOREIGN KEY (actor_user_id) REFERENCES users(id) ON DELETE SET NULL
+);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_created_at ON audit_logs(created_at);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_actor_created ON audit_logs(actor_user_id, created_at);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_category_created ON audit_logs(category, created_at);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_level_created ON audit_logs(level, created_at);
+
+CREATE TABLE IF NOT EXISTS devices (
+  user_id TEXT NOT NULL,
+  device_identifier TEXT NOT NULL,
+  name TEXT NOT NULL,
+  type INTEGER NOT NULL,
+  session_stamp TEXT,
+  encrypted_user_key TEXT,
+  encrypted_public_key TEXT,
+  encrypted_private_key TEXT,
+  banned INTEGER NOT NULL DEFAULT 0,
+  banned_at TEXT,
+  device_note TEXT,
+  last_seen_at TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  PRIMARY KEY (user_id, device_identifier),
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_devices_user_updated ON devices(user_id, updated_at);
+CREATE INDEX IF NOT EXISTS idx_devices_user_last_seen ON devices(user_id, last_seen_at);
+
+CREATE TABLE IF NOT EXISTS trusted_two_factor_device_tokens (
+  token TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  device_identifier TEXT NOT NULL,
+  expires_at INTEGER NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE INDEX IF NOT EXISTS idx_trusted_two_factor_device_tokens_user_device
+  ON trusted_two_factor_device_tokens(user_id, device_identifier);
+
+CREATE TABLE IF NOT EXISTS webauthn_credentials (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  public_key TEXT NOT NULL,
+  credential_id TEXT NOT NULL,
+  counter INTEGER NOT NULL DEFAULT 0,
+  type TEXT,
+  aa_guid TEXT,
+  transports TEXT,
+  encrypted_user_key TEXT,
+  encrypted_public_key TEXT,
+  encrypted_private_key TEXT,
+  supports_prf INTEGER NOT NULL DEFAULT 0,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_webauthn_credentials_credential_id
+  ON webauthn_credentials(credential_id);
+CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user
+  ON webauthn_credentials(user_id);
+CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user_updated
+  ON webauthn_credentials(user_id, updated_at);
+
+CREATE TABLE IF NOT EXISTS webauthn_challenges (
+  challenge_hash TEXT PRIMARY KEY,
+  scope TEXT NOT NULL,
+  user_id TEXT,
+  expires_at INTEGER NOT NULL,
+  used_at INTEGER,
+  created_at INTEGER NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_expires
+  ON webauthn_challenges(expires_at);
+CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_user_scope
+  ON webauthn_challenges(user_id, scope);
+
 -- Rate limiting
-CREATE TABLE IF NOT EXISTS login_attempts (
-  email TEXT PRIMARY KEY,
+CREATE TABLE IF NOT EXISTS login_attempts_ip (
+  ip TEXT PRIMARY KEY,
   attempts INTEGER NOT NULL,
   locked_until INTEGER,
   updated_at INTEGER NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS api_rate_limits (
-  identifier TEXT NOT NULL,
-  window_start INTEGER NOT NULL,
-  count INTEGER NOT NULL,
-  PRIMARY KEY (identifier, window_start)
+CREATE TABLE IF NOT EXISTS used_attachment_download_tokens (
+  jti TEXT PRIMARY KEY,
+  expires_at INTEGER NOT NULL
 );
-CREATE INDEX IF NOT EXISTS idx_api_rate_window ON api_rate_limits(window_start);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nodewarden",
-  "version": "0.2.0",
+  "version": "1.5.2",
   "description": "Minimal Bitwarden-compatible server running on Cloudflare Workers",
   "author": "shuaiplus",
   "license": "LGPL-3.0",
@@ -8,8 +8,16 @@
   "type": "module",
   "scripts": {
     "dev": "wrangler dev -c wrangler.toml",
-    "deploymy": "wrangler deploy -c wrangler.my.toml",
-    "deploy":  "wrangler deploy "
+    "dev:kv": "wrangler dev -c wrangler.kv.toml",
+    "dev:demo": "vite --config webapp/vite.config.ts --mode demo --host 127.0.0.1 --port 5174",
+    "build": "vite build --config webapp/vite.config.ts",
+    "build:demo": "vite build --config webapp/vite.config.ts --mode demo && node scripts/pages-spa-redirects.cjs",
+    "domains:sync": "node scripts/sync-global-domains.mjs",
+    "i18n": "node scripts/i18n-validate.cjs",
+    "i18n:validate": "node scripts/i18n-validate.cjs",
+    "deploy": "wrangler deploy",
+    "deploy:kv": "node scripts/ensure-kv.cjs && wrangler deploy -c wrangler.kv.toml",
+    "deploy:demo": "npm run build:demo && wrangler pages deploy dist --project-name nw-demo"
   },
   "keywords": [
     "bitwarden",
@@ -21,20 +29,41 @@
   "cloudflare": {
     "bindings": {
       "JWT_SECRET": {
-        "description": "Secret used to sign JWTs. Use a strong random string (32+ characters recommended)"
+        "description": "Use a strong random string (32+ characters recommended)"
       },
       "DB": {
         "description": "D1 database for storing vault data"
       },
       "ATTACHMENTS": {
         "description": "R2 bucket for storing file attachments"
+      },
+      "ATTACHMENTS_KV": {
+        "description": "Optional KV namespace fallback for attachment/send-file storage"
       }
     }
   },
   "devDependencies": {
     "@cloudflare/workers-types": "^4.20260131.0",
+    "@preact/preset-vite": "^2.10.3",
+    "@types/node": "^25.2.3",
+    "autoprefixer": "^10.4.21",
+    "opencc-js": "^1.0.5",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^3.4.17",
+    "tsx": "^4.21.0",
     "typescript": "^5.9.3",
-    "wrangler": "^4.61.1"
+    "vite": "^7.3.1",
+    "wrangler": "^4.71.0"
+  },
+  "dependencies": {
+    "@noble/hashes": "^2.0.1",
+    "@simplewebauthn/server": "^13.3.1",
+    "@tanstack/react-query": "^5.90.21",
+    "@zip.js/zip.js": "^2.8.22",
+    "fflate": "^0.8.2",
+    "lucide-preact": "^0.575.0",
+    "preact": "^10.28.4",
+    "qrcode-generator": "^2.0.4",
+    "wouter": "^3.9.0"
   }
 }
-

postcss.config.js

@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};

scripts/ensure-kv.cjs

@@ -0,0 +1,64 @@
+#!/usr/bin/env node
+/**
+ * Make `deploy:kv` idempotent across repeated builds.
+ *
+ * KV namespaces are referenced in wrangler config by account-scoped `id`, not
+ * by name. The template ships without an id so fresh accounts can provision one
+ * on first deploy. In non-interactive builds, wrangler may try to create the
+ * same namespace again on later builds and fail with code 10014.
+ */
+const { execSync } = require('node:child_process');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const CONFIG = path.resolve(__dirname, '..', 'wrangler.kv.toml');
+const BINDING = 'ATTACHMENTS_KV';
+
+const wrangler = (args) =>
+  execSync(`npx wrangler ${args}`, { encoding: 'utf8', stdio: ['ignore', 'pipe', 'inherit'] });
+
+function bindingBlockHasId(toml) {
+  const blocks = toml.match(/\[\[kv_namespaces\]\][^[]*/g) || [];
+  const block = blocks.find((entry) => new RegExp(`binding\\s*=\\s*"${BINDING}"`).test(entry));
+  return block ? /^\s*id\s*=/m.test(block) : false;
+}
+
+function expectedTitle(toml) {
+  const name = (toml.match(/^\s*name\s*=\s*"([^"]+)"/m) || [])[1] || 'worker';
+  return `${name}-${BINDING.toLowerCase().replace(/_/g, '-')}`;
+}
+
+function resolveId(title) {
+  const list = JSON.parse(wrangler('kv namespace list'));
+  const hit =
+    list.find((namespace) => namespace.title === title) ||
+    list.find((namespace) => typeof namespace.title === 'string' && namespace.title.endsWith('attachments-kv'));
+  if (hit) {
+    console.log(`[ensure-kv] reusing existing namespace "${hit.title}" (${hit.id})`);
+    return hit.id;
+  }
+
+  const out = wrangler(`kv namespace create "${title}"`);
+  const id = (out.match(/id\s*=\s*"([0-9a-fA-F]{32})"/) || [])[1];
+  if (!id) throw new Error(`[ensure-kv] could not parse new namespace id from:\n${out}`);
+  console.log(`[ensure-kv] created namespace "${title}" (${id})`);
+  return id;
+}
+
+function main() {
+  let toml = fs.readFileSync(CONFIG, 'utf8');
+  if (bindingBlockHasId(toml)) {
+    console.log(`[ensure-kv] ${BINDING} already pinned in wrangler.kv.toml; nothing to do`);
+    return;
+  }
+
+  const id = resolveId(expectedTitle(toml));
+  toml = toml.replace(
+    new RegExp(`(\\[\\[kv_namespaces\\]\\]\\s*\\n\\s*binding\\s*=\\s*"${BINDING}")`),
+    `$1\nid = "${id}"`
+  );
+  fs.writeFileSync(CONFIG, toml);
+  console.log('[ensure-kv] pinned id into wrangler.kv.toml for this build');
+}
+
+main();

scripts/i18n-utils.cjs

@@ -0,0 +1,44 @@
+const fs = require('fs');
+const path = require('path');
+const vm = require('vm');
+
+// CONTRACT:
+// This list is the script-side locale source of truth. Keep it in sync with
+// webapp/src/lib/i18n.ts whenever adding/removing a locale.
+const localeDir = path.join(__dirname, '..', 'webapp', 'src', 'lib', 'i18n', 'locales');
+
+const localeFiles = [
+  ['en', 'en.ts', 'en', 'English'],
+  ['zh-CN', 'zh-CN.ts', 'zhCN', 'Simplified Chinese'],
+  ['zh-TW', 'zh-TW.ts', 'zhTW', 'Traditional Chinese'],
+  ['ru', 'ru.ts', 'ru', 'Russian'],
+  ['es', 'es.ts', 'es', 'Spanish'],
+];
+
+function readLocale(fileName, variableName) {
+  let code = fs.readFileSync(path.join(localeDir, fileName), 'utf8');
+  code = code
+    .replace(/const (\w+): Record<string, string> =/g, 'const $1 =')
+    .replace(/export default \w+;\s*$/m, '');
+  code += `\nresult = ${variableName};`;
+  const sandbox = { result: null };
+  vm.createContext(sandbox);
+  vm.runInContext(code, sandbox, { filename: fileName });
+  return sandbox.result;
+}
+
+function writeLocale(fileName, variableName, table, header) {
+  const body = JSON.stringify(table, null, 2);
+  fs.writeFileSync(
+    path.join(localeDir, fileName),
+    `${header}\nconst ${variableName}: Record<string, string> = ${body};\n\nexport default ${variableName};\n`,
+    'utf8'
+  );
+}
+
+module.exports = {
+  localeFiles,
+  localeDir,
+  readLocale,
+  writeLocale,
+};

scripts/i18n-validate.cjs

@@ -0,0 +1,72 @@
+const { localeFiles, readLocale } = require('./i18n-utils.cjs');
+
+// CONTRACT:
+// This is the authoritative locale consistency gate. It checks key parity,
+// placeholder parity, and accidental mostly-English locale files. Run after any
+// user-facing text or locale-file change.
+const locales = Object.fromEntries(
+  localeFiles.map(([locale, fileName, variableName]) => [locale, readLocale(fileName, variableName)])
+);
+const base = locales.en;
+const baseKeys = Object.keys(base).sort();
+const placeholderRe = /\{\w+\}/g;
+const errors = [];
+const intentionallyEnglishKeys = new Set([
+  'txt_backup_destination_detail_note',
+  'txt_backup_protocol_webdav',
+  'txt_backup_protocol_s3',
+  'txt_backup_recommend_group_webdav',
+  'txt_backup_recommend_group_s3',
+  'txt_backup_destination_name_default_webdav',
+  'txt_backup_destination_name_default_s3',
+  'txt_dash',
+  'txt_text_3',
+]);
+const intentionallyEnglishPrefixes = [
+  'txt_log_action_',
+  'txt_log_meta_',
+  'txt_log_reason_',
+  'txt_log_target_type_',
+  'txt_log_trigger_',
+];
+
+function isIntentionallyEnglishKey(key) {
+  return intentionallyEnglishKeys.has(key) || intentionallyEnglishPrefixes.some((prefix) => key.startsWith(prefix));
+}
+
+for (const [locale, table] of Object.entries(locales)) {
+  const keys = Object.keys(table).sort();
+  const missing = baseKeys.filter((key) => !(key in table));
+  const extra = keys.filter((key) => !baseKeys.includes(key));
+  if (missing.length || extra.length) {
+    errors.push({ locale, missing, extra });
+  }
+
+  for (const key of baseKeys) {
+    const basePlaceholders = Array.from(String(base[key]).matchAll(placeholderRe), (match) => match[0]).sort().join('|');
+    const localePlaceholders = Array.from(String(table[key]).matchAll(placeholderRe), (match) => match[0]).sort().join('|');
+    if (basePlaceholders !== localePlaceholders) {
+      errors.push({ locale, key, basePlaceholders, localePlaceholders });
+    }
+  }
+
+  if (locale !== 'en') {
+    const sameAsEnglish = baseKeys.filter((key) => table[key] === base[key] && !isIntentionallyEnglishKey(key));
+    if (sameAsEnglish.length > 40) {
+      errors.push({
+        locale,
+        sameAsEnglishCount: sameAsEnglish.length,
+        sameAsEnglishSample: sameAsEnglish.slice(0, 25),
+      });
+    }
+  }
+}
+
+console.log(JSON.stringify({
+  counts: Object.fromEntries(Object.entries(locales).map(([locale, table]) => [locale, Object.keys(table).length])),
+  errors,
+}, null, 2));
+
+if (errors.length) {
+  process.exit(1);
+}

scripts/pages-spa-redirects.cjs

@@ -0,0 +1,7 @@
+const fs = require('node:fs');
+const path = require('node:path');
+
+const distDir = path.resolve(__dirname, '..', 'dist');
+
+fs.mkdirSync(distDir, { recursive: true });
+fs.writeFileSync(path.join(distDir, '_redirects'), '/* /index.html 200\n');

scripts/sync-global-domains.mjs

@@ -0,0 +1,160 @@
+#!/usr/bin/env node
+
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import path from 'node:path';
+
+const DEFAULT_REF = 'main';
+const OUTPUT_DIR = path.join(process.cwd(), 'src', 'static');
+const OUT_FILE = path.join(OUTPUT_DIR, 'global_domains.bitwarden.json');
+const META_FILE = path.join(OUTPUT_DIR, 'global_domains.bitwarden.meta.json');
+const ENUM_PATH = 'src/Core/Enums/GlobalEquivalentDomainsType.cs';
+const STATIC_STORE_PATH = 'src/Core/Utilities/StaticStore.cs';
+
+function parseArgs(argv) {
+  const args = { ref: process.env.BITWARDEN_SERVER_REF || DEFAULT_REF };
+  for (let i = 0; i < argv.length; i += 1) {
+    const arg = argv[i];
+    if (arg === '--ref' && argv[i + 1]) {
+      args.ref = argv[i + 1];
+      i += 1;
+    } else if (arg.startsWith('--ref=')) {
+      args.ref = arg.slice('--ref='.length);
+    }
+  }
+  return args;
+}
+
+function rawUrl(ref, filePath) {
+  return `https://raw.githubusercontent.com/bitwarden/server/${encodeURIComponent(ref)}/${filePath}`;
+}
+
+async function fetchText(url) {
+  const response = await fetch(url, {
+    headers: {
+      'User-Agent': 'NodeWarden global domains sync',
+      Accept: 'text/plain',
+    },
+  });
+  if (!response.ok) {
+    throw new Error(`Failed to fetch ${url}: HTTP ${response.status}`);
+  }
+  return response.text();
+}
+
+function parseEnumTypes(source) {
+  const map = new Map();
+  const enumMatch = source.match(/enum\s+GlobalEquivalentDomainsType\b[\s\S]*?\{([\s\S]*?)\}/);
+  if (!enumMatch) {
+    throw new Error('GlobalEquivalentDomainsType enum was not found');
+  }
+
+  const body = enumMatch[1].replace(/\/\/.*$/gm, '');
+  const entryRe = /\b([A-Za-z_][A-Za-z0-9_]*)\s*=\s*(\d+)\b/g;
+  let match;
+  while ((match = entryRe.exec(body)) !== null) {
+    map.set(match[1], Number(match[2]));
+  }
+
+  if (!map.size) {
+    throw new Error('No enum values were parsed from GlobalEquivalentDomainsType');
+  }
+  return map;
+}
+
+function parseStringList(source) {
+  const domains = [];
+  const stringRe = /"((?:\\.|[^"\\])*)"/g;
+  let match;
+  while ((match = stringRe.exec(source)) !== null) {
+    domains.push(match[1].replace(/\\"/g, '"').trim().toLowerCase());
+  }
+  return Array.from(new Set(domains.filter(Boolean)));
+}
+
+function parseGlobalDomains(source, enumTypes) {
+  const out = [];
+  const addRe = /GlobalDomains\.Add\s*\(\s*GlobalEquivalentDomainsType\.([A-Za-z_][A-Za-z0-9_]*)\s*,\s*new\s+List(?:<\s*string\s*>)?\s*\{([\s\S]*?)\}\s*\)\s*;/g;
+  let match;
+  while ((match = addRe.exec(source)) !== null) {
+    const name = match[1];
+    const type = enumTypes.get(name);
+    if (!Number.isInteger(type)) {
+      throw new Error(`GlobalDomains references unknown enum value ${name}`);
+    }
+
+    const domains = parseStringList(match[2]);
+    if (domains.length < 2) {
+      throw new Error(`GlobalDomains.${name} has fewer than two domains`);
+    }
+
+    out.push({
+      type,
+      domains,
+      excluded: false,
+    });
+  }
+
+  if (!out.length) {
+    throw new Error('No GlobalDomains.Add(...) rules were parsed from StaticStore.cs');
+  }
+  return out;
+}
+
+function formatRulesJson(rules) {
+  return `[\n${rules.map((rule) => `  ${JSON.stringify(rule)}`).join(',\n')}\n]`;
+}
+
+function formatMetaJson(meta) {
+  return JSON.stringify(meta, null, 2);
+}
+
+const { ref } = parseArgs(process.argv.slice(2));
+const enumUrl = rawUrl(ref, ENUM_PATH);
+const staticStoreUrl = rawUrl(ref, STATIC_STORE_PATH);
+
+const [enumSource, staticStoreSource] = await Promise.all([
+  fetchText(enumUrl),
+  fetchText(staticStoreUrl),
+]);
+
+const enumTypes = parseEnumTypes(enumSource);
+const rules = parseGlobalDomains(staticStoreSource, enumTypes);
+const domainsCount = rules.reduce((sum, rule) => sum + rule.domains.length, 0);
+const rulesJson = formatRulesJson(rules);
+
+async function readJsonFile(filePath) {
+  try {
+    return JSON.parse(await readFile(filePath, 'utf8'));
+  } catch {
+    return null;
+  }
+}
+
+const existingRules = await readJsonFile(OUT_FILE);
+const existingMeta = await readJsonFile(META_FILE);
+const unchangedRules = JSON.stringify(existingRules) === JSON.stringify(rules);
+const unchangedRef = existingMeta?.ref === ref;
+
+const meta = {
+  source: 'https://github.com/bitwarden/server',
+  ref,
+  generatedAt: unchangedRules && unchangedRef && existingMeta?.generatedAt
+    ? existingMeta.generatedAt
+    : new Date().toISOString(),
+  rulesCount: rules.length,
+  domainsCount,
+  sourceFiles: [
+    ENUM_PATH,
+    STATIC_STORE_PATH,
+  ],
+  sourceUrls: [
+    enumUrl,
+    staticStoreUrl,
+  ],
+};
+
+await mkdir(OUTPUT_DIR, { recursive: true });
+await writeFile(OUT_FILE, `${rulesJson}\n`, 'utf8');
+await writeFile(META_FILE, `${formatMetaJson(meta)}\n`, 'utf8');
+
+console.log(`Wrote ${rules.length} global domain rules (${domainsCount} domains) from bitwarden/server@${ref}.`);

shared/app-version.ts

@@ -0,0 +1 @@
+export const APP_VERSION = '1.5.2';

shared/backup-schema.ts

@@ -0,0 +1,159 @@
+// Shared backup settings types used by both Worker and webapp code.
+//
+// CONTRACT:
+// Keep this file serializable and provider-neutral. Runtime state is operational
+// metadata; destination fields can contain provider credentials and must be
+// encrypted by src/services/backup-settings-crypto.ts before storage/export.
+// User-facing provider names should use canonical values here. Legacy aliases
+// belong in backend normalization, not in this shared type.
+export const BACKUP_DEFAULT_TIMEZONE = 'UTC';
+export const BACKUP_DEFAULT_RETENTION_COUNT = 30;
+export const BACKUP_DEFAULT_S3_REGION = 'auto';
+export const BACKUP_DEFAULT_REMOTE_PATH = 'nodewarden';
+export const BACKUP_DEFAULT_INTERVAL_HOURS = 24;
+export const BACKUP_DEFAULT_START_TIME = '03:00';
+
+export type BackupDestinationType = 's3' | 'webdav';
+
+export interface S3BackupDestination {
+  endpoint: string;
+  bucket: string;
+  region: string;
+  accessKeyId: string;
+  secretAccessKey: string;
+  rootPath: string;
+}
+
+export interface WebDavBackupDestination {
+  baseUrl: string;
+  username: string;
+  password: string;
+  remotePath: string;
+}
+
+export type BackupDestinationConfig =
+  | S3BackupDestination
+  | WebDavBackupDestination;
+
+export interface BackupRuntimeState {
+  lastAttemptAt: string | null;
+  lastAttemptLocalDate: string | null;
+  lastSuccessAt: string | null;
+  lastErrorAt: string | null;
+  lastErrorMessage: string | null;
+  lastUploadedFileName: string | null;
+  lastUploadedSizeBytes: number | null;
+  lastUploadedDestination: string | null;
+}
+
+export interface BackupScheduleConfig {
+  enabled: boolean;
+  intervalHours: number;
+  startTime: string;
+  timezone: string;
+  retentionCount: number | null;
+}
+
+export interface BackupDestinationRecord {
+  id: string;
+  name: string;
+  type: BackupDestinationType;
+  includeAttachments: boolean;
+  destination: BackupDestinationConfig;
+  schedule: BackupScheduleConfig;
+  runtime: BackupRuntimeState;
+}
+
+export interface BackupSettings {
+  destinations: BackupDestinationRecord[];
+}
+
+export function createBackupRandomId(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID();
+  }
+  return `backup-${Date.now().toString(36)}-${Math.random().toString(36).slice(2, 10)}`;
+}
+
+export function createDefaultBackupRuntimeState(): BackupRuntimeState {
+  return {
+    lastAttemptAt: null,
+    lastAttemptLocalDate: null,
+    lastSuccessAt: null,
+    lastErrorAt: null,
+    lastErrorMessage: null,
+    lastUploadedFileName: null,
+    lastUploadedSizeBytes: null,
+    lastUploadedDestination: null,
+  };
+}
+
+export function createDefaultBackupScheduleConfig(timezone: string = BACKUP_DEFAULT_TIMEZONE): BackupScheduleConfig {
+  return {
+    enabled: false,
+    intervalHours: BACKUP_DEFAULT_INTERVAL_HOURS,
+    startTime: BACKUP_DEFAULT_START_TIME,
+    timezone,
+    retentionCount: BACKUP_DEFAULT_RETENTION_COUNT,
+  };
+}
+
+export function createDefaultBackupDestinationConfig(type: BackupDestinationType): BackupDestinationConfig {
+  if (type === 's3') {
+    return {
+      endpoint: '',
+      bucket: '',
+      region: BACKUP_DEFAULT_S3_REGION,
+      accessKeyId: '',
+      secretAccessKey: '',
+      rootPath: BACKUP_DEFAULT_REMOTE_PATH,
+    };
+  }
+  return {
+    baseUrl: '',
+    username: '',
+    password: '',
+    remotePath: BACKUP_DEFAULT_REMOTE_PATH,
+  };
+}
+
+export function createDefaultBackupDestinationName(type: BackupDestinationType, index: number): string {
+  if (type === 's3') return `S3 ${index}`;
+  return `WebDAV ${index}`;
+}
+
+export interface CreateBackupDestinationRecordOptions {
+  id?: string;
+  name?: string;
+  timezone?: string;
+}
+
+export function createBackupDestinationRecord(
+  type: BackupDestinationType,
+  index: number,
+  options: CreateBackupDestinationRecordOptions = {}
+): BackupDestinationRecord {
+  return {
+    id: options.id || createBackupRandomId(),
+    name: options.name || createDefaultBackupDestinationName(type, index),
+    type,
+    includeAttachments: false,
+    destination: createDefaultBackupDestinationConfig(type),
+    schedule: createDefaultBackupScheduleConfig(options.timezone || BACKUP_DEFAULT_TIMEZONE),
+    runtime: createDefaultBackupRuntimeState(),
+  };
+}
+
+export function createDefaultBackupSettings(
+  timezone: string = BACKUP_DEFAULT_TIMEZONE,
+  options: { destinationName?: string } = {}
+): BackupSettings {
+  return {
+    destinations: [
+      createBackupDestinationRecord('webdav', 1, {
+        timezone,
+        name: options.destinationName,
+      }),
+    ],
+  };
+}

shared/domain-normalize.ts

@@ -0,0 +1,151 @@
+const MULTI_LABEL_PUBLIC_SUFFIXES = new Set([
+  'ac.cn',
+  'com.cn',
+  'edu.cn',
+  'gov.cn',
+  'net.cn',
+  'org.cn',
+  'ah.cn',
+  'bj.cn',
+  'cq.cn',
+  'fj.cn',
+  'gd.cn',
+  'gs.cn',
+  'gx.cn',
+  'gz.cn',
+  'ha.cn',
+  'hb.cn',
+  'he.cn',
+  'hi.cn',
+  'hk.cn',
+  'hl.cn',
+  'hn.cn',
+  'jl.cn',
+  'js.cn',
+  'jx.cn',
+  'ln.cn',
+  'mo.cn',
+  'nm.cn',
+  'nx.cn',
+  'qh.cn',
+  'sc.cn',
+  'sd.cn',
+  'sh.cn',
+  'sn.cn',
+  'sx.cn',
+  'tj.cn',
+  'tw.cn',
+  'xj.cn',
+  'xz.cn',
+  'yn.cn',
+  'zj.cn',
+  'co.uk',
+  'org.uk',
+  'net.uk',
+  'ac.uk',
+  'gov.uk',
+  'com.au',
+  'net.au',
+  'org.au',
+  'edu.au',
+  'gov.au',
+  'co.nz',
+  'org.nz',
+  'net.nz',
+  'com.br',
+  'com.mx',
+  'com.ar',
+  'com.tr',
+  'com.sg',
+  'com.my',
+  'com.hk',
+  'com.tw',
+  'co.jp',
+  'ne.jp',
+  'or.jp',
+  'co.kr',
+  'or.kr',
+  'co.in',
+  'firm.in',
+  'net.in',
+  'org.in',
+  'co.id',
+  'or.id',
+  'web.id',
+  'co.il',
+  'org.il',
+  'co.za',
+  'com.sa',
+  'com.ph',
+  'com.vn',
+  'com.pk',
+  'com.bd',
+  'com.ng',
+  'github.io',
+  'pages.dev',
+  'workers.dev',
+  'cloudflareaccess.com',
+  'vercel.app',
+  'netlify.app',
+  'web.app',
+  'firebaseapp.com',
+  'herokuapp.com',
+  'fly.dev',
+  'railway.app',
+  'render.com',
+  'onrender.com',
+]);
+
+function extractHost(input: string): string {
+  let raw = input.trim().toLowerCase();
+  if (!raw) return '';
+  raw = raw.replace(/\\/g, '/');
+
+  try {
+    const candidate = /^[a-z][a-z0-9+.-]*:\/\//i.test(raw) ? raw : `https://${raw}`;
+    const parsed = new URL(candidate);
+    raw = parsed.hostname;
+  } catch {
+    raw = raw.split(/[/?#]/, 1)[0] || '';
+    const atIndex = raw.lastIndexOf('@');
+    if (atIndex >= 0) raw = raw.slice(atIndex + 1);
+    if (raw.startsWith('[')) return '';
+    const colonIndex = raw.lastIndexOf(':');
+    if (colonIndex > -1 && raw.indexOf(':') === colonIndex) raw = raw.slice(0, colonIndex);
+  }
+
+  return raw
+    .replace(/^\*+\./, '')
+    .replace(/^\.+/, '')
+    .replace(/\.+$/, '');
+}
+
+function isValidHost(host: string): boolean {
+  if (!host || host.length > 253 || !host.includes('.')) return false;
+  if (host.includes('..') || /[:/\s]/.test(host)) return false;
+  if (/^\d{1,3}(?:\.\d{1,3}){3}$/.test(host)) return false;
+  return host.split('.').every((label) => (
+    label.length > 0
+    && label.length <= 63
+    && /^[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/.test(label)
+  ));
+}
+
+export function normalizeEquivalentDomain(value: unknown): string {
+  const host = extractHost(String(value || ''));
+  if (!isValidHost(host)) return '';
+
+  const labels = host.split('.');
+  for (let index = 0; index < labels.length; index += 1) {
+    const suffix = labels.slice(index).join('.');
+    if (!MULTI_LABEL_PUBLIC_SUFFIXES.has(suffix)) continue;
+    if (index === 0) return '';
+    return labels.slice(index - 1).join('.');
+  }
+
+  return labels.length >= 2 ? labels.slice(-2).join('.') : '';
+}
+
+export function isValidEquivalentDomain(value: unknown): boolean {
+  return !!normalizeEquivalentDomain(value);
+}

src/config/limits.ts

@@ -0,0 +1,158 @@
+export const LIMITS = {
+  auth: {
+    // Access token lifetime in seconds.
+    // 访问令牌有效期（秒）。
+    accessTokenTtlSeconds: 7200,
+    // Refresh token lifetime in milliseconds.
+    // 刷新令牌有效期（毫秒）。
+    refreshTokenTtlMs: 365 * 24 * 60 * 60 * 1000,
+    // Grace window for previous refresh token after rotation (ms).
+    // 刷新令牌轮换后的旧令牌宽限窗口（毫秒）。
+    refreshTokenOverlapGraceMs: 30 * 60 * 1000,
+    // Refresh token random byte length.
+    // 刷新令牌随机字节长度。
+    refreshTokenRandomBytes: 32,
+    // Attachment download token lifetime in seconds.
+    // 附件下载令牌有效期（秒）。
+    fileDownloadTokenTtlSeconds: 300,
+    // Send access token lifetime in seconds.
+    // Send 访问令牌有效期（秒）。
+    sendAccessTokenTtlSeconds: 300,
+    // Minimum required JWT secret length.
+    // JWT 密钥最小长度要求。
+    jwtSecretMinLength: 32,
+    // Default PBKDF2 iterations for account creation/prelogin fallback.
+    // 账户创建与预登录回退使用的默认 PBKDF2 迭代次数。
+    defaultKdfIterations: 600000,
+    // clientSecret length
+    // clientSecret 长度
+    clientSecretLength: 30,
+  },
+  rateLimit: {
+    // Max failed login attempts before temporary lock.
+    // 触发临时锁定前允许的最大登录失败次数。
+    loginMaxAttempts: 10,
+    // Login lock duration in minutes.
+    // 登录锁定时长（分钟）。
+    loginLockoutMinutes: 2,
+    // Authenticated API request budget per user per minute (all reads & writes combined).
+    // 认证 API 每用户每分钟请求配额（读写合计）。
+    apiRequestsPerMinute: 200,
+    // Public (unauthenticated) request budget per IP per minute.
+    // 公开（未认证）接口每 IP 每分钟请求配额。
+    publicRequestsPerMinute: 60,
+    // Public read-only request budget per IP per minute.
+    // 公开只读接口每 IP 每分钟请求配额。
+    publicReadRequestsPerMinute: 120,
+    // Public website icon proxy budget per IP per minute.
+    // 公开网站图标代理每 IP 每分钟请求配额。
+    publicIconRequestsPerMinute: 500,
+    // Sensitive public/auth request budget per IP per minute.
+    // 敏感公开/认证接口每 IP 每分钟请求配额。
+    sensitivePublicRequestsPerMinute: 30,
+    // Password hint lookup budget per IP per minute.
+    // 密码提示查询接口每 IP 每分钟请求配额。
+    passwordHintRequestsPerMinute: 1,
+    // Password hint lookup budget per IP per hour.
+    // 密码提示查询接口每 IP 每小时请求配额。
+    passwordHintRequestsPerHour: 3,
+    // Register endpoint budget per IP per minute.
+    // 注册接口每 IP 每分钟请求配额。
+    registerRequestsPerMinute: 5,
+    // Refresh-token grant budget per IP per minute.
+    // refresh_token 授权每 IP 每分钟请求配额。
+    refreshTokenRequestsPerMinute: 30,
+    // Fixed window size for API rate limiting in seconds.
+    // API 限流固定窗口大小（秒）。
+    apiWindowSeconds: 60,
+    // Probability to run low-frequency cleanup on request path.
+    // 在请求路径中触发低频清理的概率。
+    cleanupProbability: 0.05,
+    // Minimum interval between login-attempt cleanup runs.
+    // 登录尝试表清理的最小间隔。
+    loginIpCleanupIntervalMs: 10 * 60 * 1000,
+    // Retention window for login IP records.
+    // 登录 IP 记录保留时长。
+    loginIpRetentionMs: 30 * 24 * 60 * 60 * 1000,
+  },
+  cleanup: {
+    // Minimum interval between refresh-token cleanup runs.
+    // refresh_token 表清理最小间隔。
+    refreshTokenCleanupIntervalMs: 30 * 60 * 1000,
+    // Minimum interval between used attachment token cleanup runs.
+    // 已使用附件令牌表清理最小间隔。
+    attachmentTokenCleanupIntervalMs: 10 * 60 * 1000,
+    // Probability to trigger cleanup during requests.
+    // 请求过程中触发清理的概率。
+    cleanupProbability: 0.05,
+  },
+  attachment: {
+    // Max attachment upload size in bytes.
+    // 附件上传大小上限（字节）。
+    maxFileSizeBytes: 100 * 1024 * 1024,
+  },
+  send: {
+    // Max file size allowed for Send file uploads.
+    // Send 文件上传大小上限。
+    maxFileSizeBytes: 100 * 1024 * 1024,
+    // Max days allowed between now and deletion date.
+    // 允许的最远删除日期（距当前天数）。
+    maxDeletionDays: 31,
+  },
+  pagination: {
+    // Default page size when client does not specify pageSize.
+    // 客户端未传 pageSize 时的默认分页大小。
+    defaultPageSize: 100,
+    // Hard maximum page size accepted by server.
+    // 服务端允许的最大分页大小。
+    maxPageSize: 500,
+  },
+  cors: {
+    // Browser preflight cache max age in seconds.
+    // 浏览器预检请求缓存时长（秒）。
+    preflightMaxAgeSeconds: 86400,
+  },
+  cache: {
+    // Icon proxy cache TTL in seconds.
+    // 图标代理缓存时长（秒）。
+    iconTtlSeconds: 604800,
+    // In-memory /api/sync response cache TTL (milliseconds).
+    // /api/sync 内存缓存有效期（毫秒）。
+    syncResponseTtlMs: 30 * 1000,
+    // Max size of a single cached /api/sync body in bytes.
+    // 单个 /api/sync 缓存响应允许的最大字节数。
+    syncResponseMaxBodyBytes: 512 * 1024,
+    // Max total in-memory bytes used by /api/sync cache per isolate.
+    // 每个 isolate 中 /api/sync 缓存允许占用的最大总字节数。
+    syncResponseMaxTotalBytes: 2 * 1024 * 1024,
+    // Max in-memory /api/sync cache entries per isolate.
+    // 每个 isolate 的 /api/sync 最大缓存条目数。
+    syncResponseMaxEntries: 64,
+  },
+  performance: {
+    // Max IDs per SQL batch when moving ciphers in bulk.
+    // 批量移动密码项时每批 SQL 的最大 ID 数量。
+    bulkMoveChunkSize: 200,
+    // Max total items (folders + ciphers) allowed in a single import.
+    // 单次导入允许的最大条目数（文件夹 + 密码项合计）。
+    importItemLimit: 5000,
+    // Small fixed concurrency for blob/attachment batch cleanup work.
+    // 附件 / blob 批量清理时的保守并发数。
+    attachmentDeleteConcurrency: 4,
+  },
+  request: {
+    // Hard body size limit for JSON API endpoints (bytes). File upload paths are exempt.
+    // JSON 接口请求 body 大小上限（字节），文件上传接口除外。
+    maxBodyBytes: 25 * 1024 * 1024,
+  },
+  compatibility: {
+    // Single source of truth for /config.version and /api/version.
+    // /config.version 与 /api/version 的统一版本号来源。
+    bitwardenServerVersion: '2026.4.1',
+    // Official 2026.4.x clients need this flag to receive and use cipher.key.
+    // Hiding existing item keys makes item-key encrypted vault data unreadable.
+    // 官方 2026.4.x 客户端需要该开关来接收并使用 cipher.key。
+    // 隐藏已有逐项密钥会导致逐项密钥加密的密码库数据无法解密。
+    cipherKeyEncryptionFeatureEnabled: true,
+  },
+} as const;

src/durable/backup-transfer-runner.ts

@@ -0,0 +1,465 @@
+import type { Env } from '../types';
+import type { BackupDestinationRecord } from '../services/backup-config';
+import {
+  BACKUP_SCHEDULER_WINDOW_MINUTES,
+  requireBackupDestination,
+  hasBackupSlotBetween,
+  isBackupDueNow,
+  loadBackupSettings,
+} from '../services/backup-config';
+import {
+  createRemoteBackupTransferSession,
+  downloadRemoteBackupFile,
+  ensureRemoteRestoreCandidate,
+} from '../services/backup-uploader';
+import { getBlobObject } from '../services/blob-store';
+import { StorageService } from '../services/storage';
+import { notifyUserBackupProgress, notifyUserBackupRestoreProgress } from './notifications-hub';
+import {
+  executeConfiguredBackup,
+  importAndAuditRemoteBackupFile,
+} from '../handlers/backup';
+import { verifyBackupArchiveFileNameChecksum } from '../services/backup-archive';
+import { zipSync } from 'fflate';
+
+const BACKUP_JOB_STATE_KEY = 'backup.job.state.v1';
+const BACKUP_JOB_LEASE_MS = 10 * 60 * 1000;
+const BACKUP_JOB_HEARTBEAT_MS = 30 * 1000;
+
+interface BackupJobState {
+  token: string;
+  reason: string;
+  acquiredAt: string;
+  touchedAt: string;
+  expiresAtMs: number;
+}
+
+interface RemoteAttachmentChunkRequest {
+  destination: BackupDestinationRecord;
+  attachments: Array<{
+    blobName: string;
+  }>;
+}
+
+interface RemoteAttachmentDownloadRequest {
+  destination: BackupDestinationRecord;
+  blobName?: string | null;
+}
+
+interface RemoteAttachmentBatchDownloadRequest {
+  destination: BackupDestinationRecord;
+  blobNames?: string[] | null;
+}
+
+interface ConfiguredBackupRunRequest {
+  actorUserId?: string | null;
+  auditMetadata?: Record<string, unknown> | null;
+  destinationId?: string | null;
+  targetDeviceIdentifier?: string | null;
+  trigger?: 'manual' | 'scheduled';
+}
+
+interface RemoteBackupRestoreRequest {
+  actorUserId?: string | null;
+  allowChecksumMismatch?: boolean;
+  auditMetadata?: Record<string, unknown> | null;
+  destinationId?: string | null;
+  path?: string | null;
+  replaceExisting?: boolean;
+  targetDeviceIdentifier?: string | null;
+}
+
+function badRequest(message: string, status: number = 400): Response {
+  return new Response(JSON.stringify({ error: message }), {
+    status,
+    headers: {
+      'Content-Type': 'application/json; charset=utf-8',
+      'Cache-Control': 'no-store',
+    },
+  });
+}
+
+export class BackupTransferRunner {
+  private lastHeartbeatAt = 0;
+
+  constructor(
+    private readonly state: DurableObjectState,
+    private readonly env: Env
+  ) {
+  }
+
+  private async acquireJob(reason: string): Promise<string | null> {
+    const nowMs = Date.now();
+    const current = await this.state.storage.get<BackupJobState>(BACKUP_JOB_STATE_KEY);
+    if (current?.expiresAtMs && current.expiresAtMs > nowMs) {
+      return null;
+    }
+
+    const token = crypto.randomUUID();
+    const nowIso = new Date(nowMs).toISOString();
+    await this.state.storage.put<BackupJobState>(BACKUP_JOB_STATE_KEY, {
+      token,
+      reason,
+      acquiredAt: nowIso,
+      touchedAt: nowIso,
+      expiresAtMs: nowMs + BACKUP_JOB_LEASE_MS,
+    });
+    this.lastHeartbeatAt = 0;
+    return token;
+  }
+
+  private async touchJob(token: string): Promise<void> {
+    const nowMs = Date.now();
+    if (nowMs - this.lastHeartbeatAt < BACKUP_JOB_HEARTBEAT_MS) return;
+    this.lastHeartbeatAt = nowMs;
+
+    const current = await this.state.storage.get<BackupJobState>(BACKUP_JOB_STATE_KEY);
+    if (current?.token !== token) return;
+
+    await this.state.storage.put<BackupJobState>(BACKUP_JOB_STATE_KEY, {
+      ...current,
+      touchedAt: new Date(nowMs).toISOString(),
+      expiresAtMs: nowMs + BACKUP_JOB_LEASE_MS,
+    });
+  }
+
+  private async releaseJob(token: string): Promise<void> {
+    const current = await this.state.storage.get<BackupJobState>(BACKUP_JOB_STATE_KEY);
+    if (current?.token === token) {
+      await this.state.storage.delete(BACKUP_JOB_STATE_KEY);
+    }
+  }
+
+  private async runConfiguredBackup(request: Request): Promise<Response> {
+    let body: ConfiguredBackupRunRequest;
+    try {
+      body = await request.json<ConfiguredBackupRunRequest>();
+    } catch {
+      return badRequest('Backup run payload is invalid');
+    }
+
+    const trigger = body.trigger === 'scheduled' ? 'scheduled' : 'manual';
+    const actorUserId = String(body.actorUserId || '').trim() || null;
+    if (trigger === 'manual' && !actorUserId) {
+      return badRequest('Manual backup run requires an actor');
+    }
+
+    const token = await this.acquireJob(`${trigger}:${actorUserId || 'system'}`);
+    if (!token) {
+      return badRequest('Another backup run is already in progress', 409);
+    }
+
+    try {
+      await this.touchJob(token);
+      const storage = new StorageService(this.env.DB);
+      const progress = actorUserId
+        ? async (event: {
+          operation: 'backup-remote-run';
+          step: string;
+          fileName: string;
+          stageTitle: string;
+          stageDetail: string;
+          done?: boolean;
+          ok?: boolean;
+          error?: string | null;
+        }) => {
+          await notifyUserBackupProgress(
+            this.env,
+            actorUserId,
+            event,
+            String(body.targetDeviceIdentifier || '').trim() || null
+          );
+        }
+        : null;
+
+      const result = await executeConfiguredBackup(
+        this.env,
+        storage,
+        actorUserId,
+        trigger,
+        body.destinationId || null,
+        () => this.touchJob(token),
+        progress,
+        body.auditMetadata || null
+      );
+      const settings = await loadBackupSettings(storage, this.env, 'UTC');
+
+      return new Response(JSON.stringify({
+        object: 'backup-runner-result',
+        result,
+        settings,
+      }), {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/json; charset=utf-8',
+          'Cache-Control': 'no-store',
+        },
+      });
+    } catch (error) {
+      return badRequest(error instanceof Error ? error.message : 'Backup run failed', 500);
+    } finally {
+      await this.releaseJob(token);
+    }
+  }
+
+  private async runScheduledBackups(): Promise<Response> {
+    const token = await this.acquireJob('scheduled');
+    if (!token) {
+      return badRequest('Another backup run is already in progress', 409);
+    }
+
+    let completed = 0;
+    try {
+      await this.touchJob(token);
+      const storage = new StorageService(this.env.DB);
+      let scanStartMs = Date.now();
+
+      while (true) {
+        await this.touchJob(token);
+        const settings = await loadBackupSettings(storage, this.env, 'UTC');
+        const now = new Date();
+        const dueDestinations = settings.destinations.filter((destination) =>
+          isBackupDueNow(destination, now, BACKUP_SCHEDULER_WINDOW_MINUTES)
+          || hasBackupSlotBetween(destination, new Date(scanStartMs), now)
+        );
+
+        if (!dueDestinations.length) {
+          break;
+        }
+
+        scanStartMs = now.getTime();
+        for (const destination of dueDestinations) {
+          await this.touchJob(token);
+          await executeConfiguredBackup(
+            this.env,
+            storage,
+            null,
+            'scheduled',
+            destination.id,
+            () => this.touchJob(token)
+          );
+          completed += 1;
+        }
+      }
+
+      return new Response(JSON.stringify({
+        ok: true,
+        completed,
+      }), {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/json; charset=utf-8',
+          'Cache-Control': 'no-store',
+        },
+      });
+    } catch (error) {
+      return badRequest(error instanceof Error ? error.message : 'Scheduled backup failed', 500);
+    } finally {
+      await this.releaseJob(token);
+    }
+  }
+
+  private async restoreRemoteBackup(request: Request): Promise<Response> {
+    let body: RemoteBackupRestoreRequest;
+    try {
+      body = await request.json<RemoteBackupRestoreRequest>();
+    } catch {
+      return badRequest('Remote restore payload is invalid');
+    }
+
+    const actorUserId = String(body.actorUserId || '').trim() || null;
+    if (!actorUserId) {
+      return badRequest('Remote restore requires an actor');
+    }
+
+    const token = await this.acquireJob(`restore:${actorUserId}`);
+    if (!token) {
+      return badRequest('Another backup or restore run is already in progress', 409);
+    }
+
+    try {
+      await this.touchJob(token);
+      const storage = new StorageService(this.env.DB);
+      const settings = await loadBackupSettings(storage, this.env, 'UTC');
+      const destination = requireBackupDestination(settings, body.destinationId || null);
+      const path = ensureRemoteRestoreCandidate(String(body.path || ''));
+      const restoreFileNameFromPath = path.split('/').pop() || path;
+      const targetDeviceIdentifier = String(body.targetDeviceIdentifier || '').trim() || null;
+      const replaceExisting = !!body.replaceExisting;
+
+      await notifyUserBackupRestoreProgress(
+        this.env,
+        actorUserId,
+        {
+          operation: 'backup-restore',
+          source: 'remote',
+          step: 'remote_fetch_archive',
+          fileName: restoreFileNameFromPath,
+          stageTitle: 'txt_backup_restore_progress_remote_fetch_title',
+          stageDetail: 'txt_backup_restore_progress_remote_fetch_detail',
+          replaceExisting,
+        },
+        targetDeviceIdentifier
+      );
+
+      const remoteFile = await downloadRemoteBackupFile(destination, path);
+      const checksumOk = await verifyBackupArchiveFileNameChecksum(remoteFile.bytes, remoteFile.fileName || path);
+      if (!checksumOk && !body.allowChecksumMismatch) {
+        return badRequest('Remote backup file checksum does not match its filename');
+      }
+
+      const result = await importAndAuditRemoteBackupFile(
+        this.env,
+        storage,
+        actorUserId,
+        remoteFile,
+        destination,
+        path,
+        replaceExisting,
+        !checksumOk,
+        body.auditMetadata || null,
+        targetDeviceIdentifier
+      );
+
+      return new Response(JSON.stringify(result.result), {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/json; charset=utf-8',
+          'Cache-Control': 'no-store',
+        },
+      });
+    } catch (error) {
+      return badRequest(error instanceof Error ? error.message : 'Remote backup restore failed', 500);
+    } finally {
+      await this.releaseJob(token);
+    }
+  }
+
+  async fetch(request: Request): Promise<Response> {
+    const url = new URL(request.url);
+    if (request.method !== 'POST') {
+      return badRequest('Not found', 404);
+    }
+
+    if (url.pathname === '/internal/run-configured-backup') {
+      return this.runConfiguredBackup(request);
+    }
+
+    if (url.pathname === '/internal/run-scheduled-backups') {
+      return this.runScheduledBackups();
+    }
+
+    if (url.pathname === '/internal/restore-remote-backup') {
+      return this.restoreRemoteBackup(request);
+    }
+
+    if (url.pathname === '/internal/download-remote-attachment') {
+      let body: RemoteAttachmentDownloadRequest;
+      try {
+        body = await request.json<RemoteAttachmentDownloadRequest>();
+      } catch {
+        return badRequest('Remote attachment download payload is invalid');
+      }
+      const blobName = String(body?.blobName || '').trim();
+      if (!body?.destination || !blobName) {
+        return badRequest('Remote attachment download payload is invalid');
+      }
+      const file = await downloadRemoteBackupFile(body.destination, `attachments/${blobName}`).catch(() => null);
+      if (!file) {
+        return badRequest('Remote attachment not found', 404);
+      }
+      return new Response(file.bytes, {
+        status: 200,
+        headers: {
+          'Content-Type': file.contentType || 'application/octet-stream',
+          'Cache-Control': 'no-store',
+        },
+      });
+    }
+
+    if (url.pathname === '/internal/download-remote-attachment-batch') {
+      let body: RemoteAttachmentBatchDownloadRequest;
+      try {
+        body = await request.json<RemoteAttachmentBatchDownloadRequest>();
+      } catch {
+        return badRequest('Remote attachment batch download payload is invalid');
+      }
+      const blobNames = Array.from(new Set(
+        (Array.isArray(body?.blobNames) ? body.blobNames : [])
+          .map((blobName) => String(blobName || '').trim())
+          .filter(Boolean)
+      ));
+      if (!body?.destination || !blobNames.length || blobNames.length > 40) {
+        return badRequest('Remote attachment batch download payload is invalid');
+      }
+
+      const encoder = new TextEncoder();
+      const entries: Array<{ blobName: string; path: string }> = [];
+      const files: Record<string, Uint8Array> = {};
+      for (let i = 0; i < blobNames.length; i += 1) {
+        const blobName = blobNames[i];
+        const file = await downloadRemoteBackupFile(body.destination, `attachments/${blobName}`).catch(() => null);
+        if (!file) continue;
+        const path = `files/${i}.bin`;
+        entries.push({ blobName, path });
+        files[path] = file.bytes;
+      }
+      files['manifest.json'] = encoder.encode(JSON.stringify({ version: 1, entries }));
+
+      return new Response(zipSync(files), {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/zip',
+          'Cache-Control': 'no-store',
+        },
+      });
+    }
+
+    if (url.pathname !== '/internal/upload-attachment-chunk') {
+      return badRequest('Not found', 404);
+    }
+
+    let body: RemoteAttachmentChunkRequest;
+    try {
+      body = await request.json<RemoteAttachmentChunkRequest>();
+    } catch {
+      return badRequest('Attachment chunk payload is invalid');
+    }
+
+    if (!body?.destination || !Array.isArray(body.attachments)) {
+      return badRequest('Attachment chunk payload is invalid');
+    }
+
+    const remoteSession = createRemoteBackupTransferSession(body.destination);
+    let uploaded = 0;
+
+    for (const attachment of body.attachments) {
+      const blobName = String(attachment?.blobName || '').trim();
+      if (!blobName) {
+        return badRequest('Attachment chunk payload is invalid');
+      }
+
+      const object = await getBlobObject(this.env, blobName);
+      if (!object) {
+        return badRequest(`Attachment blob missing for ${blobName}`, 409);
+      }
+
+      const bytes = new Uint8Array(await new Response(object.body).arrayBuffer());
+      await remoteSession.putFile(`attachments/${blobName}`, bytes, {
+        contentType: object.contentType,
+      });
+      uploaded += 1;
+    }
+
+    return new Response(JSON.stringify({
+      ok: true,
+      uploaded,
+    }), {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/json; charset=utf-8',
+        'Cache-Control': 'no-store',
+      },
+    });
+  }
+}

src/durable/notifications-hub.ts

@@ -0,0 +1,492 @@
+import { DurableObject, waitUntil } from 'cloudflare:workers';
+import type { Env } from '../types';
+
+const SIGNALR_RECORD_SEPARATOR = 0x1e;
+const SIGNALR_HANDSHAKE_ACK = new Uint8Array([0x7b, 0x7d, SIGNALR_RECORD_SEPARATOR]);
+const SIGNALR_UPDATE_TYPE_SYNC_VAULT = 5;
+const SIGNALR_UPDATE_TYPE_LOG_OUT = 11;
+const SIGNALR_UPDATE_TYPE_DEVICE_STATUS = 12;
+const SIGNALR_UPDATE_TYPE_BACKUP_RESTORE_PROGRESS = 13;
+
+type HubProtocol = 'json' | 'messagepack';
+
+interface WsAttachment {
+  userId: string;
+  handshakeComplete: boolean;
+  protocol: HubProtocol;
+  deviceIdentifier: string | null;
+}
+
+function concatBytes(chunks: Uint8Array[]): Uint8Array {
+  const total = chunks.reduce((sum, chunk) => sum + chunk.length, 0);
+  const out = new Uint8Array(total);
+  let offset = 0;
+  for (const chunk of chunks) {
+    out.set(chunk, offset);
+    offset += chunk.length;
+  }
+  return out;
+}
+
+function encodeUtf8(value: string): Uint8Array {
+  return new TextEncoder().encode(value);
+}
+
+function decodeIncomingMessage(data: string | ArrayBuffer | ArrayBufferView): string {
+  if (typeof data === 'string') return data;
+  if (data instanceof ArrayBuffer) return new TextDecoder().decode(new Uint8Array(data));
+  return new TextDecoder().decode(new Uint8Array(data.buffer, data.byteOffset, data.byteLength));
+}
+
+function encodeMsgPackInteger(value: number): Uint8Array {
+  const normalized = Math.trunc(value);
+  if (normalized >= 0 && normalized <= 0x7f) {
+    return new Uint8Array([normalized]);
+  }
+  if (normalized >= 0 && normalized <= 0xff) {
+    return new Uint8Array([0xcc, normalized]);
+  }
+  if (normalized >= 0 && normalized <= 0xffff) {
+    return new Uint8Array([0xcd, normalized >> 8, normalized & 0xff]);
+  }
+  const safe = normalized >>> 0;
+  return new Uint8Array([
+    0xce,
+    (safe >>> 24) & 0xff,
+    (safe >>> 16) & 0xff,
+    (safe >>> 8) & 0xff,
+    safe & 0xff,
+  ]);
+}
+
+function encodeMsgPackString(value: string): Uint8Array {
+  const bytes = encodeUtf8(value);
+  const len = bytes.length;
+  if (len < 32) {
+    return concatBytes([new Uint8Array([0xa0 | len]), bytes]);
+  }
+  if (len <= 0xff) {
+    return concatBytes([new Uint8Array([0xd9, len]), bytes]);
+  }
+  return concatBytes([new Uint8Array([0xda, (len >> 8) & 0xff, len & 0xff]), bytes]);
+}
+
+function encodeMsgPackTimestamp(date: Date): Uint8Array {
+  const seconds = BigInt(Math.floor(date.getTime() / 1000));
+  const nanos = BigInt(date.getMilliseconds()) * 1000000n;
+  const timestamp = (nanos << 34n) | seconds;
+  const payload = new Uint8Array(8);
+  for (let i = 7; i >= 0; i--) {
+    payload[i] = Number((timestamp >> BigInt((7 - i) * 8)) & 0xffn);
+  }
+  return concatBytes([new Uint8Array([0xc7, 0x08, 0xff]), payload]);
+}
+
+function encodeMsgPackArray(values: unknown[]): Uint8Array {
+  const items = values.map(encodeMsgPack);
+  const len = items.length;
+  const header =
+    len < 16
+      ? new Uint8Array([0x90 | len])
+      : new Uint8Array([0xdc, (len >> 8) & 0xff, len & 0xff]);
+  return concatBytes([header, ...items]);
+}
+
+function encodeMsgPackMap(value: Record<string, unknown>): Uint8Array {
+  const entries = Object.entries(value);
+  const len = entries.length;
+  const header =
+    len < 16
+      ? new Uint8Array([0x80 | len])
+      : new Uint8Array([0xde, (len >> 8) & 0xff, len & 0xff]);
+  const chunks: Uint8Array[] = [header];
+  for (const [key, entryValue] of entries) {
+    chunks.push(encodeMsgPackString(key), encodeMsgPack(entryValue));
+  }
+  return concatBytes(chunks);
+}
+
+function encodeMsgPack(value: unknown): Uint8Array {
+  if (value === null || value === undefined) return new Uint8Array([0xc0]);
+  if (value instanceof Date) return encodeMsgPackTimestamp(value);
+  if (typeof value === 'string') return encodeMsgPackString(value);
+  if (typeof value === 'number') return encodeMsgPackInteger(value);
+  if (typeof value === 'boolean') return new Uint8Array([value ? 0xc3 : 0xc2]);
+  if (Array.isArray(value)) return encodeMsgPackArray(value);
+  if (value instanceof Uint8Array) {
+    const len = value.length;
+    if (len <= 0xff) return concatBytes([new Uint8Array([0xc4, len]), value]);
+    return concatBytes([new Uint8Array([0xc5, (len >> 8) & 0xff, len & 0xff]), value]);
+  }
+  return encodeMsgPackMap(value as Record<string, unknown>);
+}
+
+function frameSignalRBinary(payload: Uint8Array): Uint8Array {
+  const len = payload.length;
+  const prefix: number[] = [];
+  let value = len;
+  do {
+    let current = value & 0x7f;
+    value >>>= 7;
+    if (value > 0) current |= 0x80;
+    prefix.push(current);
+  } while (value > 0);
+  return concatBytes([new Uint8Array(prefix), payload]);
+}
+
+function buildSignalRJsonInvocation(
+  updateType: number,
+  payload: Record<string, unknown>,
+  contextId: string | null
+): string {
+  return JSON.stringify({
+    type: 1,
+    target: 'ReceiveMessage',
+    arguments: [
+        {
+          ContextId: contextId,
+          Type: updateType,
+          Payload: payload,
+        },
+      ],
+    }) + String.fromCharCode(SIGNALR_RECORD_SEPARATOR);
+}
+
+function buildSignalRMessagePackInvocation(
+  updateType: number,
+  messagePayload: Record<string, unknown>,
+  contextId: string | null
+): Uint8Array {
+  // SignalR MessagePack hub protocol uses an array-based invocation shape:
+  // [type, headers, invocationId, target, arguments]
+  const encodedPayload = encodeMsgPack([
+    1,
+    {},
+    null,
+    'ReceiveMessage',
+    [
+      {
+        ContextId: contextId,
+        Type: updateType,
+        Payload: messagePayload,
+      },
+    ],
+  ]);
+  return frameSignalRBinary(encodedPayload);
+}
+
+export class NotificationsHub extends DurableObject<Env> {
+  constructor(ctx: DurableObjectState, env: Env) {
+    super(ctx, env);
+    this.ctx.setWebSocketAutoResponse(
+      new WebSocketRequestResponsePair(
+        JSON.stringify({ type: 6 }) + String.fromCharCode(SIGNALR_RECORD_SEPARATOR),
+        JSON.stringify({ type: 6 }) + String.fromCharCode(SIGNALR_RECORD_SEPARATOR)
+      )
+    );
+  }
+
+  async fetch(request: Request): Promise<Response> {
+    const url = new URL(request.url);
+
+    if (url.pathname === '/internal/notify' && request.method === 'POST') {
+      const body = (await request.json().catch(() => null)) as {
+        revisionDate?: string;
+        userId?: string;
+        contextId?: string | null;
+        updateType?: number;
+        targetDeviceIdentifier?: string | null;
+        payload?: Record<string, unknown> | null;
+      } | null;
+      const revisionDate = String(body?.revisionDate || '').trim() || new Date().toISOString();
+      const userId = String(request.headers.get('X-NodeWarden-UserId') || body?.userId || '').trim();
+      const contextId = String(body?.contextId || '').trim() || null;
+      const updateType = Number(body?.updateType || SIGNALR_UPDATE_TYPE_SYNC_VAULT) || SIGNALR_UPDATE_TYPE_SYNC_VAULT;
+      const targetDeviceIdentifier = String(body?.targetDeviceIdentifier || '').trim() || null;
+      const payload = body?.payload && typeof body.payload === 'object'
+        ? body.payload
+        : {
+          UserId: userId,
+          Date: revisionDate,
+        };
+      this.broadcastMessage(updateType, payload, contextId, targetDeviceIdentifier);
+      return new Response(null, { status: 204 });
+    }
+
+    if (url.pathname === '/internal/online' && request.method === 'GET') {
+      return new Response(JSON.stringify({ deviceIdentifiers: this.getOnlineDeviceIdentifiers() }), {
+        status: 200,
+        headers: {
+          'Content-Type': 'application/json',
+        },
+      });
+    }
+
+    if (url.pathname !== '/notifications/hub') {
+      return new Response('Not found', { status: 404 });
+    }
+
+    if (request.headers.get('Upgrade')?.toLowerCase() !== 'websocket') {
+      return new Response('Expected websocket', { status: 426 });
+    }
+
+    const requestUserId = String(url.searchParams.get('nw_uid') || '').trim();
+    const requestDeviceIdentifier = String(url.searchParams.get('nw_did') || '').trim() || null;
+
+    if (!requestUserId) {
+      return new Response('Unauthorized', { status: 401 });
+    }
+
+    const pair = new WebSocketPair();
+    const client = pair[0];
+    const server = pair[1];
+
+    const tags: string[] = [];
+    if (requestDeviceIdentifier) {
+      tags.push(`device:${requestDeviceIdentifier}`);
+    }
+    this.ctx.acceptWebSocket(server, tags);
+
+    server.serializeAttachment({
+      userId: requestUserId,
+      handshakeComplete: false,
+      protocol: 'messagepack',
+      deviceIdentifier: requestDeviceIdentifier,
+    } satisfies WsAttachment);
+
+    return new Response(null, {
+      status: 101,
+      webSocket: client,
+    });
+  }
+
+  async webSocketMessage(ws: WebSocket, message: string | ArrayBuffer | ArrayBufferView): Promise<void> {
+    const attachment = ws.deserializeAttachment() as WsAttachment | null;
+    if (!attachment) return;
+
+    if (!attachment.handshakeComplete) {
+      const text = decodeIncomingMessage(message);
+      const frames = text.split(String.fromCharCode(SIGNALR_RECORD_SEPARATOR)).filter(Boolean);
+      for (const frame of frames) {
+        try {
+          const handshake = JSON.parse(frame) as { protocol?: string };
+          attachment.protocol = handshake.protocol === 'json' ? 'json' : 'messagepack';
+          attachment.handshakeComplete = true;
+          ws.serializeAttachment(attachment);
+          ws.send(SIGNALR_HANDSHAKE_ACK);
+          this.broadcastDeviceStatus(attachment.userId);
+          return;
+        } catch {
+          // Ignore malformed pre-handshake payloads.
+        }
+      }
+      return;
+    }
+
+    if (typeof message !== 'string') {
+      try {
+        ws.send(message);
+      } catch {
+        // ignore send errors on echo
+      }
+    }
+  }
+
+  async webSocketClose(ws: WebSocket, code: number, reason: string, wasClean: boolean): Promise<void> {
+    const attachment = ws.deserializeAttachment() as WsAttachment | null;
+    const shouldBroadcast = !!attachment?.handshakeComplete;
+    if (shouldBroadcast && attachment?.userId) {
+      this.broadcastDeviceStatus(attachment.userId);
+    }
+  }
+
+  async webSocketError(ws: WebSocket, error: unknown): Promise<void> {
+    const attachment = ws.deserializeAttachment() as WsAttachment | null;
+    const shouldBroadcast = !!attachment?.handshakeComplete;
+    if (shouldBroadcast && attachment?.userId) {
+      this.broadcastDeviceStatus(attachment.userId);
+    }
+  }
+
+  private getOnlineDeviceIdentifiers(): string[] {
+    const out = new Set<string>();
+    for (const ws of this.ctx.getWebSockets()) {
+      const attachment = ws.deserializeAttachment() as WsAttachment | null;
+      if (!attachment?.handshakeComplete || !attachment.deviceIdentifier) continue;
+      out.add(attachment.deviceIdentifier);
+    }
+    return Array.from(out);
+  }
+
+  private broadcastMessage(
+    updateType: number,
+    payload: Record<string, unknown>,
+    contextId: string | null,
+    targetDeviceIdentifier: string | null
+  ): void {
+    const sockets = targetDeviceIdentifier
+      ? this.ctx.getWebSockets(`device:${targetDeviceIdentifier}`)
+      : this.ctx.getWebSockets();
+
+    if (sockets.length === 0) return;
+
+    for (const ws of sockets) {
+      const attachment = ws.deserializeAttachment() as WsAttachment | null;
+      if (!attachment?.handshakeComplete) continue;
+      try {
+        if (attachment.protocol === 'json') {
+          ws.send(buildSignalRJsonInvocation(updateType, payload, contextId));
+        } else {
+          ws.send(buildSignalRMessagePackInvocation(updateType, payload, contextId));
+        }
+      } catch {
+        try {
+          ws.close(1011, 'Notification send failed');
+        } catch {
+          // ignore close races
+        }
+      }
+    }
+  }
+
+  private broadcastDeviceStatus(userId: string): void {
+    this.broadcastMessage(
+      SIGNALR_UPDATE_TYPE_DEVICE_STATUS,
+      {
+        UserId: userId,
+        Date: new Date().toISOString(),
+      },
+      null,
+      null
+    );
+  }
+}
+
+export function notifyUserVaultSync(
+  env: Env,
+  userId: string,
+  revisionDate: string,
+  contextId?: string | null
+): void {
+  waitUntil(notifyUserUpdate(env, userId, SIGNALR_UPDATE_TYPE_SYNC_VAULT, revisionDate, contextId ?? null, null));
+}
+
+export function notifyUserLogout(
+  env: Env,
+  userId: string,
+  targetDeviceIdentifier?: string | null
+): void {
+  waitUntil(notifyUserUpdate(env, userId, SIGNALR_UPDATE_TYPE_LOG_OUT, new Date().toISOString(), null, targetDeviceIdentifier ?? null));
+}
+
+export async function getOnlineUserDevices(env: Env, userId: string): Promise<string[]> {
+  try {
+    const id = env.NOTIFICATIONS_HUB.idFromName(userId);
+    const stub = env.NOTIFICATIONS_HUB.get(id);
+    const response = await stub.fetch('https://notifications/internal/online');
+    if (!response.ok) return [];
+    const body = (await response.json().catch(() => null)) as { deviceIdentifiers?: string[] } | null;
+    return Array.isArray(body?.deviceIdentifiers) ? body.deviceIdentifiers.filter((value) => !!String(value || '').trim()) : [];
+  } catch {
+    return [];
+  }
+}
+
+async function notifyUserUpdate(
+  env: Env,
+  userId: string,
+  updateType: number,
+  revisionDate: string,
+  contextId: string | null,
+  targetDeviceIdentifier: string | null
+): Promise<void> {
+  try {
+    const id = env.NOTIFICATIONS_HUB.idFromName(userId);
+    const stub = env.NOTIFICATIONS_HUB.get(id);
+    await stub.fetch('https://notifications/internal/notify', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'X-NodeWarden-UserId': userId,
+      },
+      body: JSON.stringify({
+        revisionDate,
+        contextId: contextId || null,
+        updateType,
+        targetDeviceIdentifier: targetDeviceIdentifier || null,
+        payload: {
+          UserId: userId,
+          Date: revisionDate,
+        },
+      }),
+    });
+  } catch (error) {
+    console.error('Failed to broadcast realtime notification:', error);
+  }
+}
+
+export async function notifyUserBackupProgress(
+  env: Env,
+  userId: string,
+  progress: {
+    operation: 'backup-restore' | 'backup-export' | 'backup-remote-run';
+    source?: 'local' | 'remote';
+    step: string;
+    fileName: string;
+    stageTitle?: string;
+    stageDetail?: string;
+    replaceExisting?: boolean;
+    done?: boolean;
+    ok?: boolean;
+    error?: string | null;
+    timestamp?: string;
+  },
+  targetDeviceIdentifier?: string | null
+): Promise<void> {
+  const revisionDate = progress.timestamp || new Date().toISOString();
+  try {
+    const id = env.NOTIFICATIONS_HUB.idFromName(userId);
+    const stub = env.NOTIFICATIONS_HUB.get(id);
+    await stub.fetch('https://notifications/internal/notify', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'X-NodeWarden-UserId': userId,
+      },
+      body: JSON.stringify({
+        revisionDate,
+        contextId: null,
+        updateType: SIGNALR_UPDATE_TYPE_BACKUP_RESTORE_PROGRESS,
+        targetDeviceIdentifier: targetDeviceIdentifier || null,
+        payload: {
+          UserId: userId,
+          Date: revisionDate,
+          ...progress,
+        },
+      }),
+    });
+  } catch (error) {
+    console.error('Failed to broadcast backup progress:', error);
+  }
+}
+
+export async function notifyUserBackupRestoreProgress(
+  env: Env,
+  userId: string,
+  progress: {
+    operation: 'backup-restore';
+    source: 'local' | 'remote';
+    step: string;
+    fileName: string;
+    stageTitle?: string;
+    stageDetail?: string;
+    replaceExisting?: boolean;
+    done?: boolean;
+    ok?: boolean;
+    error?: string | null;
+    timestamp?: string;
+  },
+  targetDeviceIdentifier?: string | null
+): Promise<void> {
+  return notifyUserBackupProgress(env, userId, progress, targetDeviceIdentifier);
+}

src/handlers/account-passkeys.ts

@@ -0,0 +1,488 @@
+import {
+  generateAuthenticationOptions,
+  generateRegistrationOptions,
+  verifyAuthenticationResponse,
+  verifyRegistrationResponse,
+} from '@simplewebauthn/server';
+import type { AccountPasskeyChallengeScope, AccountPasskeyCredential, Env, User } from '../types';
+import { StorageService } from '../services/storage';
+import { AuthService } from '../services/auth';
+import { errorResponse, identityErrorResponse, jsonResponse } from '../utils/response';
+import { generateUUID } from '../utils/uuid';
+import { bytesToBase64Url } from '../utils/passkey';
+import {
+  accountPasskeyCredentialToResponse,
+  accountPasskeyPrfStatus,
+  accountPasskeyTokenTtlMs,
+  buildWebAuthnPrfOption,
+  createAccountPasskeyToken,
+  getAccountPasskeyRpConfig,
+  isSerializedEncString,
+  normalizeAccountPasskeyName,
+  normalizeAuthenticationResponse,
+  normalizeRegistrationResponse,
+  normalizeTransports,
+  sha256Base64Url,
+  toSimpleWebAuthnCredential,
+  userHandleToUserId,
+  userIdToWebAuthnUserId,
+  verifyAccountPasskeyToken,
+} from '../utils/account-passkeys';
+import { auditRequestMetadata, safeWriteAuditEvent } from '../services/audit-events';
+
+const MAX_ACCOUNT_PASSKEYS = 5;
+
+function parseBodyObject(body: unknown): Record<string, any> {
+  return body && typeof body === 'object' ? body as Record<string, any> : {};
+}
+
+async function readJsonBody(request: Request): Promise<Record<string, any> | null> {
+  try {
+    return parseBodyObject(await request.json());
+  } catch {
+    return null;
+  }
+}
+
+async function verifyUserSecret(
+  env: Env,
+  user: User,
+  body: Record<string, any>
+): Promise<boolean> {
+  const secret = String(body.masterPasswordHash || body.master_password_hash || body.secret || body.password || '').trim();
+  if (!secret) return false;
+  const storedHash = String(user.masterPasswordHash || '').trim();
+  if (!storedHash) return false;
+  const auth = new AuthService(env);
+  return auth.verifyPassword(secret, storedHash, user.email);
+}
+
+function logAccountPasskeyHandlerError(stage: string, error: unknown, details: Record<string, unknown> = {}): void {
+  const err = error instanceof Error ? error : null;
+  console.error('Account passkey handler failed', {
+    stage,
+    name: err?.name || typeof error,
+    message: err?.message || String(error),
+    stack: err?.stack,
+    ...details,
+  });
+}
+
+function passkeySetupStageMessage(stage: string): string {
+  if (stage === 'verify_master_password') return 'verifying master password';
+  if (stage === 'load_existing_credentials') return 'loading existing passkeys';
+  if (stage === 'generate_options') return 'generating passkey options';
+  if (stage === 'save_challenge') return 'saving passkey challenge';
+  if (stage === 'create_token') return 'creating passkey challenge token';
+  return 'preparing passkey setup';
+}
+
+function hasCompletePrfKeySet(body: Record<string, any>): boolean {
+  return !!(body.encryptedUserKey && body.encryptedPublicKey && body.encryptedPrivateKey);
+}
+
+function readPrfKeySet(body: Record<string, any>): {
+  encryptedUserKey: string | null;
+  encryptedPublicKey: string | null;
+  encryptedPrivateKey: string | null;
+} {
+  if (!hasCompletePrfKeySet(body)) {
+    return { encryptedUserKey: null, encryptedPublicKey: null, encryptedPrivateKey: null };
+  }
+  const encryptedUserKey = String(body.encryptedUserKey).trim();
+  const encryptedPublicKey = String(body.encryptedPublicKey).trim();
+  const encryptedPrivateKey = String(body.encryptedPrivateKey).trim();
+  if (!isSerializedEncString(encryptedUserKey) || !isSerializedEncString(encryptedPublicKey) || !isSerializedEncString(encryptedPrivateKey)) {
+    throw new Error('Invalid encrypted key set');
+  }
+  return { encryptedUserKey, encryptedPublicKey, encryptedPrivateKey };
+}
+
+async function saveChallenge(
+  storage: StorageService,
+  scope: AccountPasskeyChallengeScope,
+  challenge: string,
+  userId: string | null
+): Promise<void> {
+  const now = Date.now();
+  await storage.saveAccountPasskeyChallenge({
+    challengeHash: await sha256Base64Url(challenge),
+    scope,
+    userId,
+    expiresAt: now + accountPasskeyTokenTtlMs(scope),
+    usedAt: null,
+    createdAt: now,
+  });
+}
+
+export async function handleGetAccountPasskeyAssertionOptions(request: Request, env: Env): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const { rpId } = getAccountPasskeyRpConfig(request, env);
+  const options = await generateAuthenticationOptions({
+    rpID: rpId,
+    allowCredentials: [],
+    userVerification: 'required',
+    timeout: 60000,
+  });
+  await saveChallenge(storage, 'Authentication', options.challenge, null);
+  const token = await createAccountPasskeyToken(env, {
+    scope: 'Authentication',
+    challenge: options.challenge,
+    userId: null,
+    rpId,
+  });
+  return jsonResponse({ options, token, object: 'webAuthnLoginAssertionOptions', Object: 'webAuthnLoginAssertionOptions' });
+}
+
+export async function assertAccountPasskeyCredential(
+  request: Request,
+  env: Env,
+  storage: StorageService,
+  input: {
+    token: string;
+    deviceResponse: unknown;
+    scope: 'Authentication' | 'UpdateKeySet';
+    expectedUserId?: string | null;
+  }
+): Promise<{ user: User; credential: AccountPasskeyCredential }> {
+  const payload = await verifyAccountPasskeyToken(env, input.token, input.scope);
+  if (!payload) {
+    throw new Error('Passkey challenge token is invalid or expired');
+  }
+  if (input.expectedUserId !== undefined && payload.userId !== input.expectedUserId) {
+    throw new Error('Passkey challenge token does not match this user');
+  }
+
+  const response = normalizeAuthenticationResponse(input.deviceResponse);
+  if (!response) {
+    throw new Error('Invalid passkey assertion response');
+  }
+
+  const challengeHash = await sha256Base64Url(payload.challenge);
+  const consumed = await storage.consumeAccountPasskeyChallenge(
+    challengeHash,
+    input.scope,
+    payload.userId,
+    Date.now()
+  );
+  if (!consumed) {
+    throw new Error('Passkey challenge has expired or was already used');
+  }
+
+  const credential = await storage.getAccountPasskeyCredentialByCredentialId(response.rawId);
+  if (!credential) {
+    throw new Error('Passkey is not registered for this server');
+  }
+  if (payload.userId && credential.userId !== payload.userId) {
+    throw new Error('Passkey does not belong to this user');
+  }
+
+  const userHandleUserId = userHandleToUserId(response.response.userHandle);
+  const resolvedUserId = payload.userId || userHandleUserId || credential.userId;
+  if (!resolvedUserId || resolvedUserId !== credential.userId) {
+    throw new Error('Passkey user handle does not match this credential');
+  }
+
+  const user = await storage.getUserById(resolvedUserId);
+  if (!user || user.status !== 'active') {
+    throw new Error('Passkey user is not available');
+  }
+
+  const { origins } = getAccountPasskeyRpConfig(request, env);
+  const verification = await verifyAuthenticationResponse({
+    response,
+    expectedChallenge: payload.challenge,
+    expectedOrigin: origins,
+    expectedRPID: payload.rpId,
+    credential: toSimpleWebAuthnCredential(credential),
+    requireUserVerification: true,
+    advancedFIDOConfig: { userVerification: 'required' },
+  });
+  if (!verification.verified || !verification.authenticationInfo.userVerified) {
+    throw new Error('Passkey assertion could not be verified');
+  }
+
+  await storage.updateAccountPasskeyCounter(
+    credential.userId,
+    credential.credentialId,
+    verification.authenticationInfo.newCounter,
+    new Date().toISOString()
+  );
+  credential.counter = verification.authenticationInfo.newCounter;
+  return { user, credential };
+}
+
+export async function handleGetAccountPasskeyCredentials(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const credentials = await storage.getAccountPasskeyCredentialsByUserId(userId);
+  return jsonResponse({
+    data: credentials.map(accountPasskeyCredentialToResponse),
+    Data: credentials.map(accountPasskeyCredentialToResponse),
+    object: 'list',
+    Object: 'list',
+    continuationToken: null,
+    ContinuationToken: null,
+  });
+}
+
+export async function handleGetAccountPasskeyAttestationOptions(request: Request, env: Env, userId: string, user: User): Promise<Response> {
+  const body = await readJsonBody(request);
+  if (!body) return errorResponse('Invalid request payload', 400);
+
+  let stage = 'verify_master_password';
+  try {
+    if (!(await verifyUserSecret(env, user, body))) {
+      return errorResponse('Master password verification failed', 400);
+    }
+
+    const storage = new StorageService(env.DB);
+    stage = 'load_existing_credentials';
+    const credentials = await storage.getAccountPasskeyCredentialsByUserId(userId);
+    if (credentials.length >= MAX_ACCOUNT_PASSKEYS) {
+      return errorResponse('Maximum passkey count reached', 400);
+    }
+
+    const { rpId, rpName } = getAccountPasskeyRpConfig(request, env);
+    stage = 'generate_options';
+    const options = await generateRegistrationOptions({
+      rpID: rpId,
+      rpName,
+      userID: Uint8Array.from(userIdToWebAuthnUserId(user.id)),
+      userName: user.email,
+      userDisplayName: user.name || user.email,
+      attestationType: 'none',
+      timeout: 60000,
+      excludeCredentials: credentials.map((credential) => ({
+        id: credential.credentialId,
+        transports: (credential.transports || undefined) as any,
+      })),
+      authenticatorSelection: {
+        residentKey: 'required',
+        requireResidentKey: true,
+        userVerification: 'required',
+      },
+    });
+    (options as any).extensions = {
+      ...((options as any).extensions || {}),
+      prf: {},
+    };
+    stage = 'save_challenge';
+    await saveChallenge(storage, 'CreateCredential', options.challenge, userId);
+    stage = 'create_token';
+    const token = await createAccountPasskeyToken(env, {
+      scope: 'CreateCredential',
+      challenge: options.challenge,
+      userId,
+      rpId,
+    });
+    return jsonResponse({ options, token, object: 'webauthnCredentialCreateOptions', Object: 'webauthnCredentialCreateOptions' });
+  } catch (error) {
+    logAccountPasskeyHandlerError(stage, error, { userId });
+    return errorResponse(`Passkey setup failed while ${passkeySetupStageMessage(stage)}`, 500);
+  }
+}
+
+export async function handleGetAccountPasskeyUpdateAssertionOptions(request: Request, env: Env, userId: string, user: User): Promise<Response> {
+  const body = await readJsonBody(request);
+  if (!body) return errorResponse('Invalid request payload', 400);
+  if (!(await verifyUserSecret(env, user, body))) {
+    return errorResponse('Master password verification failed', 400);
+  }
+
+  const storage = new StorageService(env.DB);
+  let credentials = await storage.getAccountPasskeyCredentialsByUserId(userId);
+  const requestedId = String(body.credentialId || body.id || '').trim();
+  if (requestedId) {
+    credentials = credentials.filter((credential) => credential.id === requestedId);
+    if (!credentials.length) return errorResponse('Account passkey not found', 404);
+  }
+  if (!credentials.length) return errorResponse('No account passkeys registered', 404);
+
+  const { rpId } = getAccountPasskeyRpConfig(request, env);
+  const options = await generateAuthenticationOptions({
+    rpID: rpId,
+    allowCredentials: credentials.map((credential) => ({
+      id: credential.credentialId,
+      transports: (credential.transports || undefined) as any,
+    })),
+    userVerification: 'required',
+    timeout: 60000,
+  });
+  await saveChallenge(storage, 'UpdateKeySet', options.challenge, userId);
+  const token = await createAccountPasskeyToken(env, {
+    scope: 'UpdateKeySet',
+    challenge: options.challenge,
+    userId,
+    rpId,
+  });
+  return jsonResponse({ options, token, object: 'webAuthnLoginAssertionOptions', Object: 'webAuthnLoginAssertionOptions' });
+}
+
+export async function handleCreateAccountPasskeyCredential(request: Request, env: Env, userId: string): Promise<Response> {
+  const body = await readJsonBody(request);
+  if (!body) return errorResponse('Invalid request payload', 400);
+
+  const storage = new StorageService(env.DB);
+  const payload = await verifyAccountPasskeyToken(env, String(body.token || ''), 'CreateCredential');
+  if (!payload || payload.userId !== userId) {
+    return errorResponse('Passkey challenge token is invalid or expired', 400);
+  }
+
+  const challengeHash = await sha256Base64Url(payload.challenge);
+  const consumed = await storage.consumeAccountPasskeyChallenge(challengeHash, 'CreateCredential', userId, Date.now());
+  if (!consumed) {
+    return errorResponse('Passkey challenge has expired or was already used', 400);
+  }
+
+  const currentCount = await storage.countAccountPasskeyCredentialsByUserId(userId);
+  if (currentCount >= MAX_ACCOUNT_PASSKEYS) {
+    return errorResponse('Maximum passkey count reached', 400);
+  }
+
+  let prfKeySet: ReturnType<typeof readPrfKeySet>;
+  try {
+    prfKeySet = readPrfKeySet(body);
+  } catch {
+    return errorResponse('Invalid encrypted passkey key set', 400);
+  }
+
+  const registrationResponse = normalizeRegistrationResponse(body.deviceResponse);
+  if (!registrationResponse) {
+    return errorResponse('Invalid passkey registration response', 400);
+  }
+
+  const { origins } = getAccountPasskeyRpConfig(request, env);
+  let verification: Awaited<ReturnType<typeof verifyRegistrationResponse>>;
+  try {
+    verification = await verifyRegistrationResponse({
+      response: registrationResponse,
+      expectedChallenge: payload.challenge,
+      expectedOrigin: origins,
+      expectedRPID: payload.rpId,
+      requireUserPresence: true,
+      requireUserVerification: true,
+    });
+  } catch {
+    return errorResponse('Passkey registration could not be verified', 400);
+  }
+  if (!verification.verified) {
+    return errorResponse('Passkey registration could not be verified', 400);
+  }
+
+  const existing = await storage.getAccountPasskeyCredentialByCredentialId(verification.registrationInfo.credential.id);
+  if (existing) {
+    return errorResponse('Passkey is already registered', 409);
+  }
+
+  const now = new Date().toISOString();
+  const supportsPrf = !!body.supportsPrf || hasCompletePrfKeySet(body);
+  const transports = normalizeTransports(registrationResponse.response.transports);
+  const credential: AccountPasskeyCredential = {
+    id: generateUUID(),
+    userId,
+    name: normalizeAccountPasskeyName(body.name),
+    publicKey: bytesToBase64Url(verification.registrationInfo.credential.publicKey),
+    credentialId: verification.registrationInfo.credential.id,
+    counter: verification.registrationInfo.credential.counter,
+    type: verification.registrationInfo.credentialType || 'public-key',
+    aaGuid: verification.registrationInfo.aaguid || null,
+    transports,
+    encryptedUserKey: prfKeySet.encryptedUserKey,
+    encryptedPublicKey: prfKeySet.encryptedPublicKey,
+    encryptedPrivateKey: prfKeySet.encryptedPrivateKey,
+    supportsPrf,
+    createdAt: now,
+    updatedAt: now,
+  };
+
+  await storage.saveAccountPasskeyCredential(credential);
+  await safeWriteAuditEvent(env, {
+    actorUserId: userId,
+    action: 'account.passkey.create',
+    category: 'security',
+    level: 'info',
+    targetType: 'accountPasskey',
+    targetId: credential.id,
+    metadata: {
+      prfStatus: accountPasskeyPrfStatus(credential),
+      ...auditRequestMetadata(request),
+    },
+  });
+
+  return jsonResponse(accountPasskeyCredentialToResponse(credential));
+}
+
+export async function handleUpdateAccountPasskeyEncryption(request: Request, env: Env, userId: string): Promise<Response> {
+  const body = await readJsonBody(request);
+  if (!body) return errorResponse('Invalid request payload', 400);
+
+  let prfKeySet: ReturnType<typeof readPrfKeySet>;
+  try {
+    prfKeySet = readPrfKeySet(body);
+  } catch {
+    return errorResponse('Invalid encrypted passkey key set', 400);
+  }
+  if (!prfKeySet.encryptedUserKey || !prfKeySet.encryptedPublicKey || !prfKeySet.encryptedPrivateKey) {
+    return errorResponse('Encrypted passkey key set is required', 400);
+  }
+
+  const storage = new StorageService(env.DB);
+  let assertion: Awaited<ReturnType<typeof assertAccountPasskeyCredential>>;
+  try {
+    assertion = await assertAccountPasskeyCredential(request, env, storage, {
+      token: String(body.token || ''),
+      deviceResponse: body.deviceResponse,
+      scope: 'UpdateKeySet',
+      expectedUserId: userId,
+    });
+  } catch (error) {
+    return errorResponse(error instanceof Error ? error.message : 'Passkey assertion failed', 400);
+  }
+
+  const updated = await storage.updateAccountPasskeyEncryption(
+    userId,
+    assertion.credential.credentialId,
+    prfKeySet.encryptedUserKey,
+    prfKeySet.encryptedPublicKey,
+    prfKeySet.encryptedPrivateKey
+  );
+  if (!updated) return errorResponse('Passkey not found', 404);
+
+  await safeWriteAuditEvent(env, {
+    actorUserId: userId,
+    action: 'account.passkey.encryption.enable',
+    category: 'security',
+    level: 'info',
+    targetType: 'accountPasskey',
+    targetId: assertion.credential.id,
+    metadata: auditRequestMetadata(request),
+  });
+  return jsonResponse({ success: true });
+}
+
+export async function handleDeleteAccountPasskeyCredential(request: Request, env: Env, userId: string, credentialId: string, user: User): Promise<Response> {
+  const body = await readJsonBody(request);
+  if (!body) return errorResponse('Invalid request payload', 400);
+  if (!(await verifyUserSecret(env, user, body))) {
+    return errorResponse('Master password verification failed', 400);
+  }
+
+  const storage = new StorageService(env.DB);
+  const deleted = await storage.deleteAccountPasskeyCredential(userId, credentialId);
+  if (!deleted) return errorResponse('Passkey not found', 404);
+
+  await safeWriteAuditEvent(env, {
+    actorUserId: userId,
+    action: 'account.passkey.delete',
+    category: 'security',
+    level: 'info',
+    targetType: 'accountPasskey',
+    targetId: credentialId,
+    metadata: auditRequestMetadata(request),
+  });
+  return jsonResponse({ success: true });
+}
+
+export function buildAccountPasskeyTokenUserDecryptionOption(credential: AccountPasskeyCredential) {
+  return buildWebAuthnPrfOption(credential);
+}

src/handlers/accounts.ts

@@ -1,22 +1,133 @@
 import { Env, User, ProfileResponse, DEFAULT_DEV_SECRET } from '../types';
 import { StorageService } from '../services/storage';
 import { AuthService } from '../services/auth';
+import { RateLimitService, getClientIdentifier } from '../services/ratelimit';
+import { auditRequestMetadata, writeAuditEvent, safeWriteAuditEvent } from '../services/audit-events';
 import { jsonResponse, errorResponse } from '../utils/response';
 import { generateUUID } from '../utils/uuid';
+import { LIMITS } from '../config/limits';
+import { isTotpEnabled, verifyTotpToken } from '../utils/totp';
+import { createRecoveryCode, recoveryCodeEquals } from '../utils/recovery-code';
+import { buildAccountKeys } from '../utils/user-decryption';
+
+// CONTRACT:
+// users.master_password_hash is server-side login verification only. It does
+// not decrypt vault data. Password changes must keep encrypted user key material,
+// securityStamp, refresh-token invalidation, and client compatibility together.
+// Password hints are non-secret reminders; never treat them as recovery secrets.
+function looksLikeEncString(value: string): boolean {
+  if (!value) return false;
+  const firstDot = value.indexOf('.');
+  if (firstDot <= 0 || firstDot === value.length - 1) return false;
+  const payload = value.slice(firstDot + 1);
+  const parts = payload.split('|');
+  // Bitwarden encrypted payloads should have at least IV + ciphertext.
+  return parts.length >= 2;
+}
+
+/**
+ * Validate KDF parameters according to Bitwarden minimum requirements.
+ * Returns an error message if invalid, or null if OK.
+ */
+function validateKdfParams(kdfType: number | undefined, kdfIterations: number | undefined, kdfMemory?: number | undefined, kdfParallelism?: number | undefined): string | null {
+  const type = kdfType ?? 0;
+  if (type === 0) {
+    // PBKDF2-SHA256: minimum 100 000 iterations
+    if (typeof kdfIterations === 'number' && kdfIterations < 100_000) {
+      return 'PBKDF2 iterations must be at least 100000';
+    }
+  } else if (type === 1) {
+    // Argon2id: iterations >= 2, memory >= 16 MiB, parallelism >= 1
+    if (typeof kdfIterations === 'number' && kdfIterations < 2) {
+      return 'Argon2id iterations must be at least 2';
+    }
+    if (typeof kdfMemory === 'number' && kdfMemory < 16) {
+      return 'Argon2id memory must be at least 16 MiB';
+    }
+    if (typeof kdfParallelism === 'number' && kdfParallelism < 1) {
+      return 'Argon2id parallelism must be at least 1';
+    }
+  }
+  return null;
+}
+
+function normalizeTotpSecret(input: string): string {
+  const raw = String(input || '').toUpperCase();
+  let out = '';
+  for (const char of raw) {
+    if (char === ' ' || char === '\t' || char === '\n' || char === '\r' || char === '-') continue;
+    out += char;
+  }
+  while (out.endsWith('=')) {
+    out = out.slice(0, -1);
+  }
+  return out;
+}
+
+function normalizeRecoveryCodeInput(input: string): string {
+  return String(input || '').toUpperCase().replace(/[^A-Z2-7]/g, '');
+}
+
+function normalizeMasterPasswordHint(input: string | null | undefined): string | null {
+  const normalized = String(input || '').trim();
+  return normalized ? normalized : null;
+}
 
 function jwtSecretUnsafeReason(env: Env): 'missing' | 'default' | 'too_short' | null {
   const secret = (env.JWT_SECRET || '').trim();
   if (!secret) return 'missing';
   if (secret === DEFAULT_DEV_SECRET) return 'default';
-  if (secret.length < 32) return 'too_short';
+  if (secret.length < LIMITS.auth.jwtSecretMinLength) return 'too_short';
   return null;
 }
 
-// POST /api/accounts/register (only used from setup page, not client)
+async function verifyUserSecret(
+  auth: AuthService,
+  user: User,
+  secret: string | null | undefined
+): Promise<boolean> {
+  const normalized = String(secret || '').trim();
+  if (!normalized) return false;
+  return auth.verifyPassword(normalized, user.masterPasswordHash, user.email);
+}
+
+function toProfile(user: User, env: Env): ProfileResponse {
+  void env;
+  const accountKeys = buildAccountKeys(user);
+  return {
+    id: user.id,
+    name: user.name,
+    email: user.email,
+    emailVerified: true,
+    premium: true,
+    premiumFromOrganization: false,
+    usesKeyConnector: false,
+    masterPasswordHint: user.masterPasswordHint,
+    culture: 'en-US',
+    twoFactorEnabled: !!user.totpSecret,
+    key: user.key,
+    privateKey: user.privateKey,
+    accountKeys,
+    securityStamp: user.securityStamp || user.id,
+    organizations: [],
+    providers: [],
+    providerOrganizations: [],
+    forcePasswordReset: false,
+    avatarColor: null,
+    creationDate: user.createdAt,
+    verifyDevices: user.verifyDevices,
+    role: user.role,
+    status: user.status,
+    object: 'profile',
+  };
+}
+
+// POST /api/accounts/register
+// - First user becomes admin.
+// - Any subsequent user must provide a valid inviteCode.
 export async function handleRegister(request: Request, env: Env): Promise<Response> {
   const storage = new StorageService(env.DB);
 
-  // Enforce safe JWT_SECRET before allowing first registration.
   const unsafe = jwtSecretUnsafeReason(env);
   if (unsafe) {
     const message = unsafe === 'missing'
@@ -27,22 +138,17 @@ export async function handleRegister(request: Request, env: Env): Promise<Respon
     return errorResponse(message, 400);
   }
 
-  // Check if already registered
-  const isRegistered = await storage.isRegistered();
-  if (isRegistered) {
-    return errorResponse('Registration is closed', 403);
-  }
-
   let body: {
     email?: string;
     name?: string;
     masterPasswordHash?: string;
-    masterPasswordHint?: string;
     key?: string;
     kdf?: number;
     kdfIterations?: number;
     kdfMemory?: number;
     kdfParallelism?: number;
+    inviteCode?: string;
+    masterPasswordHint?: string;
     keys?: {
       publicKey?: string;
       encryptedPrivateKey?: string;
@@ -55,110 +161,290 @@ export async function handleRegister(request: Request, env: Env): Promise<Respon
     return errorResponse('Invalid JSON', 400);
   }
 
-  const email = body.email?.toLowerCase();
-  const name = body.name || email;
+  const email = body.email?.toLowerCase().trim();
+  const name = body.name?.trim() || email;
   const masterPasswordHash = body.masterPasswordHash;
   const key = body.key;
   const privateKey = body.keys?.encryptedPrivateKey;
   const publicKey = body.keys?.publicKey;
+  const inviteCode = (body.inviteCode || '').trim();
+  const masterPasswordHint = normalizeMasterPasswordHint(body.masterPasswordHint);
 
   if (!email || !masterPasswordHash || !key) {
     return errorResponse('Email, masterPasswordHash, and key are required', 400);
   }
-
+  if (!email.includes('@') || email.length < 3) {
+    return errorResponse('Invalid email address', 400);
+  }
   if (!privateKey || !publicKey) {
     return errorResponse('Private key and public key are required', 400);
   }
+  if (!looksLikeEncString(key)) {
+    return errorResponse('key is not a valid encrypted string', 400);
+  }
+  if (!looksLikeEncString(privateKey)) {
+    return errorResponse('encryptedPrivateKey is not a valid encrypted string', 400);
+  }
+  if (masterPasswordHint && masterPasswordHint.length > 120) {
+    return errorResponse('masterPasswordHint must be 120 characters or fewer', 400);
+  }
+
+  const kdfErr = validateKdfParams(body.kdf, body.kdfIterations, body.kdfMemory, body.kdfParallelism);
+  if (kdfErr) return errorResponse(kdfErr, 400);
+
+  const now = new Date().toISOString();
+  const auth = new AuthService(env);
+  const serverHash = await auth.hashPasswordServer(masterPasswordHash, email);
 
-  // Create user
   const user: User = {
     id: generateUUID(),
-    email: email,
+    email,
     name: name || email,
-    masterPasswordHash: masterPasswordHash,
-    key: key,
-    privateKey: privateKey,
-    publicKey: publicKey,
+    masterPasswordHint,
+    masterPasswordHash: serverHash,
+    key,
+    privateKey,
+    publicKey,
     kdfType: body.kdf ?? 0,
-    kdfIterations: body.kdfIterations ?? 600000,
+    kdfIterations: body.kdfIterations ?? LIMITS.auth.defaultKdfIterations,
     kdfMemory: body.kdfMemory,
     kdfParallelism: body.kdfParallelism,
     securityStamp: generateUUID(),
-    createdAt: new Date().toISOString(),
-    updatedAt: new Date().toISOString(),
+    role: 'user',
+    status: 'active',
+    verifyDevices: true,
+    totpSecret: null,
+    totpRecoveryCode: null,
+    apiKey: null,
+    createdAt: now,
+    updatedAt: now,
   };
 
-  await storage.saveUser(user);
-  await storage.setRegistered();
-
-  return jsonResponse({ success: true }, 200);
-}
-
-// GET /api/accounts/profile
-export async function handleGetProfile(request: Request, env: Env, userId: string): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const user = await storage.getUserById(userId);
-
-  if (!user) {
-    return errorResponse('User not found', 404);
+  const userCount = await storage.getUserCount();
+  if (userCount === 0) {
+    user.role = 'admin';
+    const created = await storage.createFirstUser(user);
+    if (!created) {
+      return errorResponse('Registration is temporarily unavailable, retry once', 409);
+    }
+    await storage.setRegistered();
+    await writeAuditEvent(storage, {
+      actorUserId: user.id,
+      action: 'user.register.first_admin',
+      targetType: 'user',
+      targetId: user.id,
+      category: 'security',
+      level: 'security',
+      metadata: { email: user.email, ...auditRequestMetadata(request) },
+    });
+    return jsonResponse({ success: true, role: user.role }, 200);
   }
 
-  const profile: ProfileResponse = {
-    id: user.id,
-    name: user.name,
-    email: user.email,
-    emailVerified: true,
-    premium: true,
-    premiumFromOrganization: false,
-    usesKeyConnector: false,
-    masterPasswordHint: null,
-    culture: 'en-US',
-    twoFactorEnabled: false,
-    key: user.key,
-    privateKey: user.privateKey,
-    accountKeys: null,
-    securityStamp: user.securityStamp || user.id,
-    organizations: [],
-    providers: [],
-    providerOrganizations: [],
-    forcePasswordReset: false,
-    avatarColor: null,
-    creationDate: user.createdAt,
-    object: 'profile',
-  };
-
-  return jsonResponse(profile);
-}
-
-// PUT /api/accounts/profile
-export async function handleUpdateProfile(request: Request, env: Env, userId: string): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const user = await storage.getUserById(userId);
-
-  if (!user) {
-    return errorResponse('User not found', 404);
+  if (!inviteCode) {
+    return errorResponse('Invite code is required', 403);
   }
 
-  let body: { name?: string; masterPasswordHint?: string };
+  try {
+    await storage.createUser(user);
+  } catch (error) {
+    const msg = error instanceof Error ? error.message.toLowerCase() : String(error).toLowerCase();
+    if (msg.includes('unique') || msg.includes('constraint')) {
+      return errorResponse('Email already registered', 409);
+    }
+    throw error;
+  }
+
+  const inviteMarked = await storage.markInviteUsed(inviteCode, user.id);
+  if (!inviteMarked) {
+    await storage.deleteUserById(user.id);
+    return errorResponse('Invite code is invalid or expired', 403);
+  }
+
+  await writeAuditEvent(storage, {
+    actorUserId: user.id,
+    action: 'user.register.invite',
+    targetType: 'user',
+    targetId: user.id,
+    category: 'security',
+    level: 'info',
+    metadata: { email: user.email, inviteCode, ...auditRequestMetadata(request) },
+  });
+
+  return jsonResponse({ success: true, role: user.role }, 200);
+}
+
+// POST /api/accounts/password-hint
+export async function handleGetPasswordHint(request: Request, env: Env): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const clientIdentifier = getClientIdentifier(request);
+  if (!clientIdentifier) {
+    return errorResponse('Client IP is required', 403);
+  }
+
+  let body: { email?: string };
   try {
     body = await request.json();
   } catch {
     return errorResponse('Invalid JSON', 400);
   }
 
-  if (body.name) {
-    user.name = body.name;
+  const email = String(body.email || '').trim().toLowerCase();
+  if (!email) {
+    return errorResponse('Email is required', 400);
   }
+
+  const rateLimit = new RateLimitService(env.DB);
+  const minuteBudget = await rateLimit.consumeBudgetWithWindow(
+    `${clientIdentifier}:password-hint`,
+    LIMITS.rateLimit.passwordHintRequestsPerMinute,
+    60
+  );
+  if (!minuteBudget.allowed) {
+    return new Response(
+      JSON.stringify({
+        error: 'Too many requests',
+        error_description: `Rate limit exceeded. Try again in ${minuteBudget.retryAfterSeconds || 60} seconds.`,
+      }),
+      {
+        status: 429,
+        headers: {
+          'Content-Type': 'application/json',
+          'Retry-After': String(minuteBudget.retryAfterSeconds || 60),
+          'X-RateLimit-Remaining': '0',
+        },
+      }
+    );
+  }
+
+  const hourlyBudget = await rateLimit.consumeBudgetWithWindow(
+    `${clientIdentifier}:password-hint-hour`,
+    LIMITS.rateLimit.passwordHintRequestsPerHour,
+    60 * 60
+  );
+  if (!hourlyBudget.allowed) {
+    return new Response(
+      JSON.stringify({
+        error: 'Too many requests',
+        error_description: `Rate limit exceeded. Try again in ${hourlyBudget.retryAfterSeconds || 3600} seconds.`,
+      }),
+      {
+        status: 429,
+        headers: {
+          'Content-Type': 'application/json',
+          'Retry-After': String(hourlyBudget.retryAfterSeconds || 3600),
+          'X-RateLimit-Remaining': '0',
+        },
+      }
+    );
+  }
+
+  const user = await storage.getUser(email);
+  const hint = user?.status === 'active' ? normalizeMasterPasswordHint(user.masterPasswordHint) : null;
+  return jsonResponse({
+    object: 'passwordHint',
+    hasHint: !!hint,
+    masterPasswordHint: hint,
+  });
+}
+
+// GET /api/accounts/profile
+export async function handleGetProfile(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+  return jsonResponse(toProfile(user, env));
+}
+
+// PUT /api/accounts/profile
+export async function handleUpdateProfile(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: {
+    masterPasswordHint?: string | null;
+  };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const masterPasswordHint = normalizeMasterPasswordHint(body.masterPasswordHint);
+  if (masterPasswordHint && masterPasswordHint.length > 120) {
+    return errorResponse('masterPasswordHint must be 120 characters or fewer', 400);
+  }
+
+  user.masterPasswordHint = masterPasswordHint;
   user.updatedAt = new Date().toISOString();
-
   await storage.saveUser(user);
+  await writeAuditEvent(storage, {
+    actorUserId: user.id,
+    action: 'account.profile.update',
+    category: 'security',
+    level: 'info',
+    targetType: 'user',
+    targetId: user.id,
+    metadata: {
+      updatedMasterPasswordHint: true,
+      ...auditRequestMetadata(request),
+    },
+  });
 
-  return handleGetProfile(request, env, userId);
+  return jsonResponse(toProfile(user, env));
+}
+
+// PUT/POST /api/accounts/verify-devices
+export async function handleSetVerifyDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: {
+    secret?: string;
+    masterPasswordHash?: string;
+    verifyDevices?: boolean;
+  };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  if (typeof body.verifyDevices !== 'boolean') {
+    return errorResponse('verifyDevices must be true or false', 400);
+  }
+
+  const verified = await verifyUserSecret(auth, user, body.secret || body.masterPasswordHash);
+  if (!verified) {
+    return errorResponse('User verification failed.', 400);
+  }
+
+  user.verifyDevices = body.verifyDevices;
+  user.updatedAt = new Date().toISOString();
+  await storage.saveUser(user);
+  await writeAuditEvent(storage, {
+    actorUserId: user.id,
+    action: 'account.verify_devices.update',
+    category: 'security',
+    level: 'security',
+    targetType: 'user',
+    targetId: user.id,
+    metadata: {
+      verifyDevices: user.verifyDevices,
+      ...auditRequestMetadata(request),
+    },
+  });
+
+  return new Response(null, { status: 200 });
 }
 
 // POST /api/accounts/keys
 export async function handleSetKeys(request: Request, env: Env, userId: string): Promise<Response> {
   const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
   const user = await storage.getUserById(userId);
 
   if (!user) {
@@ -166,6 +452,7 @@ export async function handleSetKeys(request: Request, env: Env, userId: string):
   }
 
   let body: {
+    masterPasswordHash?: string;
     key?: string;
     encryptedPrivateKey?: string;
     publicKey?: string;
@@ -177,21 +464,336 @@ export async function handleSetKeys(request: Request, env: Env, userId: string):
     return errorResponse('Invalid JSON', 400);
   }
 
+  // Require password verification before allowing key replacement.
+  if (!body.masterPasswordHash) {
+    return errorResponse('masterPasswordHash is required', 400);
+  }
+  const passwordValid = await auth.verifyPassword(body.masterPasswordHash, user.masterPasswordHash, user.email);
+  if (!passwordValid) {
+    return errorResponse('Invalid password', 400);
+  }
+
+  if (body.key && !looksLikeEncString(body.key)) {
+    return errorResponse('key is not a valid encrypted string', 400);
+  }
+  if (body.encryptedPrivateKey && !looksLikeEncString(body.encryptedPrivateKey)) {
+    return errorResponse('encryptedPrivateKey is not a valid encrypted string', 400);
+  }
+
   if (body.key) user.key = body.key;
   if (body.encryptedPrivateKey) user.privateKey = body.encryptedPrivateKey;
   if (body.publicKey) user.publicKey = body.publicKey;
   user.updatedAt = new Date().toISOString();
 
   await storage.saveUser(user);
+  await writeAuditEvent(storage, {
+    actorUserId: user.id,
+    action: 'account.keys.update',
+    category: 'security',
+    level: 'security',
+    targetType: 'user',
+    targetId: user.id,
+    metadata: {
+      updatedKey: !!body.key,
+      updatedPrivateKey: !!body.encryptedPrivateKey,
+      updatedPublicKey: !!body.publicKey,
+      ...auditRequestMetadata(request),
+    },
+  });
 
   return handleGetProfile(request, env, userId);
 }
 
+// POST/PUT /api/accounts/password
+export async function handleChangePassword(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: {
+    masterPasswordHash?: string;
+    currentPasswordHash?: string;
+    newMasterPasswordHash?: string;
+    key?: string;
+    newKey?: string;
+    encryptedPrivateKey?: string;
+    newEncryptedPrivateKey?: string;
+    publicKey?: string;
+    newPublicKey?: string;
+    kdf?: number;
+    kdfIterations?: number;
+    kdfMemory?: number;
+    kdfParallelism?: number;
+  };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const currentHash = body.currentPasswordHash || body.masterPasswordHash;
+  if (!currentHash) return errorResponse('Current password hash is required', 400);
+  const valid = await auth.verifyPassword(currentHash, user.masterPasswordHash, user.email);
+  if (!valid) return errorResponse('Invalid password', 400);
+
+  if (!body.newMasterPasswordHash) {
+    return errorResponse('newMasterPasswordHash is required', 400);
+  }
+  const nextKey = body.newKey || body.key;
+  const nextPrivateKey = body.newEncryptedPrivateKey || body.encryptedPrivateKey;
+  const nextPublicKey = body.newPublicKey || body.publicKey;
+  if (nextKey && !looksLikeEncString(nextKey)) {
+    return errorResponse('new key is not a valid encrypted string', 400);
+  }
+  if (nextPrivateKey && !looksLikeEncString(nextPrivateKey)) {
+    return errorResponse('new encryptedPrivateKey is not a valid encrypted string', 400);
+  }
+
+  const kdfErr = validateKdfParams(body.kdf ?? user.kdfType, body.kdfIterations, body.kdfMemory, body.kdfParallelism);
+  if (kdfErr) return errorResponse(kdfErr, 400);
+
+  user.masterPasswordHash = await auth.hashPasswordServer(body.newMasterPasswordHash, user.email);
+  if (nextKey) user.key = nextKey;
+  if (nextPrivateKey) user.privateKey = nextPrivateKey;
+  if (nextPublicKey) user.publicKey = nextPublicKey;
+  if (typeof body.kdf === 'number') user.kdfType = body.kdf;
+  if (typeof body.kdfIterations === 'number') user.kdfIterations = body.kdfIterations;
+  if (typeof body.kdfMemory === 'number') user.kdfMemory = body.kdfMemory;
+  if (typeof body.kdfParallelism === 'number') user.kdfParallelism = body.kdfParallelism;
+  user.securityStamp = generateUUID();
+  user.updatedAt = new Date().toISOString();
+  await storage.saveUser(user);
+  await storage.deleteRefreshTokensByUserId(user.id);
+  AuthService.invalidateUserCache(user.id);
+  await writeAuditEvent(storage, {
+    actorUserId: user.id,
+    action: 'user.password.change',
+    targetType: 'user',
+    targetId: user.id,
+    category: 'security',
+    level: 'security',
+    metadata: { email: user.email, ...auditRequestMetadata(request) },
+  });
+
+  return new Response(null, { status: 200 });
+}
+
+// GET /api/accounts/totp
+export async function handleGetTotpStatus(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  return jsonResponse({
+    enabled: !!user.totpSecret,
+    object: 'twoFactor',
+  });
+}
+
+// PUT /api/accounts/totp
+// enable: { enabled: true, secret: "...", token: "123456" }
+// disable: { enabled: false, masterPasswordHash: "..." }
+export async function handleSetTotpStatus(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: { enabled?: boolean; secret?: string; token?: string; masterPasswordHash?: string };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  if (body.enabled === true) {
+    const normalizedSecret = normalizeTotpSecret(body.secret || '');
+    if (!isTotpEnabled(normalizedSecret)) {
+      return errorResponse('Invalid TOTP secret', 400);
+    }
+    if (!body.token) {
+      return errorResponse('TOTP token is required', 400);
+    }
+    const verified = await verifyTotpToken(normalizedSecret, body.token);
+    if (!verified) {
+      return errorResponse('Invalid TOTP token', 400);
+    }
+    user.totpSecret = normalizedSecret;
+    if (!user.totpRecoveryCode) {
+      user.totpRecoveryCode = createRecoveryCode();
+    }
+    user.updatedAt = new Date().toISOString();
+    await storage.saveUser(user);
+    await storage.deleteRefreshTokensByUserId(user.id);
+    AuthService.invalidateUserCache(user.id);
+    await writeAuditEvent(storage, {
+      actorUserId: user.id,
+      action: 'account.totp.enable',
+      category: 'security',
+      level: 'security',
+      targetType: 'user',
+      targetId: user.id,
+      metadata: auditRequestMetadata(request),
+    });
+    return jsonResponse({ enabled: true, recoveryCode: user.totpRecoveryCode, object: 'twoFactor' });
+  }
+
+  if (body.enabled === false) {
+    if (!body.masterPasswordHash) {
+      return errorResponse('masterPasswordHash is required to disable TOTP', 400);
+    }
+    const valid = await auth.verifyPassword(body.masterPasswordHash, user.masterPasswordHash, user.email);
+    if (!valid) return errorResponse('Invalid password', 400);
+
+    user.totpSecret = null;
+    user.updatedAt = new Date().toISOString();
+    await storage.saveUser(user);
+    await storage.deleteRefreshTokensByUserId(user.id);
+    AuthService.invalidateUserCache(user.id);
+    await writeAuditEvent(storage, {
+      actorUserId: user.id,
+      action: 'account.totp.disable',
+      category: 'security',
+      level: 'security',
+      targetType: 'user',
+      targetId: user.id,
+      metadata: auditRequestMetadata(request),
+    });
+    return jsonResponse({ enabled: false, object: 'twoFactor' });
+  }
+
+  return errorResponse('enabled must be true or false', 400);
+}
+
+// POST /api/accounts/totp/recovery-code
+export async function handleGetTotpRecoveryCode(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: Record<string, string | undefined>;
+  try {
+    const contentType = request.headers.get('content-type') || '';
+    if (contentType.includes('application/x-www-form-urlencoded')) {
+      const formData = await request.formData();
+      body = Object.fromEntries(formData.entries()) as Record<string, string>;
+    } else {
+      body = await request.json();
+    }
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const currentHash = String(body.masterPasswordHash || body.master_password_hash || body.password || '').trim();
+  if (!currentHash) return errorResponse('masterPasswordHash is required', 400);
+  const valid = await auth.verifyPassword(currentHash, user.masterPasswordHash, user.email);
+  if (!valid) return errorResponse('Invalid password', 400);
+
+  if (!user.totpRecoveryCode) {
+    user.totpRecoveryCode = createRecoveryCode();
+    user.updatedAt = new Date().toISOString();
+    await storage.saveUser(user);
+  }
+
+  return jsonResponse({
+    code: user.totpRecoveryCode,
+    object: 'twoFactorRecover',
+  });
+}
+
+// POST /identity/accounts/recover-2fa
+// Disable TOTP by recovery code + password, then rotate recovery code.
+export async function handleRecoverTwoFactor(request: Request, env: Env): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const rateLimit = new RateLimitService(env.DB);
+
+  let body: Record<string, string | undefined>;
+  try {
+    const contentType = request.headers.get('content-type') || '';
+    if (contentType.includes('application/x-www-form-urlencoded')) {
+      const formData = await request.formData();
+      body = Object.fromEntries(formData.entries()) as Record<string, string>;
+    } else {
+      body = await request.json();
+    }
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const email = String(body.email || body.username || '').trim().toLowerCase();
+  const masterPasswordHash = String(body.masterPasswordHash || body.password || '').trim();
+  const recoveryCode = normalizeRecoveryCodeInput(String(body.recoveryCode || body.twoFactorToken || body.recovery_code || ''));
+  const clientIdentifier = getClientIdentifier(request);
+  if (!clientIdentifier) {
+    return errorResponse('Client IP is required', 403);
+  }
+  const recoverLimitKey = `${clientIdentifier}:recover-2fa`;
+
+  const recoverAttemptCheck = await rateLimit.checkLoginAttempt(recoverLimitKey);
+  if (!recoverAttemptCheck.allowed) {
+    return errorResponse(
+      `Too many failed recovery attempts. Try again in ${Math.ceil((recoverAttemptCheck.retryAfterSeconds || 60) / 60)} minutes.`,
+      429
+    );
+  }
+
+  if (!email || !masterPasswordHash || !recoveryCode) {
+    return errorResponse('Email, masterPasswordHash and recoveryCode are required', 400);
+  }
+
+  const user = await storage.getUser(email);
+  if (!user || user.status !== 'active') {
+    await rateLimit.recordFailedLogin(recoverLimitKey);
+    return errorResponse('Invalid credentials or recovery code', 400);
+  }
+
+  const validPassword = await auth.verifyPassword(masterPasswordHash, user.masterPasswordHash, user.email);
+  if (!validPassword) {
+    await rateLimit.recordFailedLogin(recoverLimitKey);
+    return errorResponse('Invalid credentials or recovery code', 400);
+  }
+
+  if (!recoveryCodeEquals(recoveryCode, user.totpRecoveryCode)) {
+    await rateLimit.recordFailedLogin(recoverLimitKey);
+    return errorResponse('Invalid credentials or recovery code', 400);
+  }
+
+  user.totpSecret = null;
+  user.totpRecoveryCode = createRecoveryCode();
+  user.securityStamp = generateUUID();
+  user.updatedAt = new Date().toISOString();
+  await storage.saveUser(user);
+  await storage.deleteRefreshTokensByUserId(user.id);
+  AuthService.invalidateUserCache(user.id);
+  await rateLimit.clearLoginAttempts(recoverLimitKey);
+  await safeWriteAuditEvent(env, {
+    actorUserId: user.id,
+    action: 'account.totp.recover',
+    category: 'security',
+    level: 'security',
+    targetType: 'user',
+    targetId: user.id,
+    metadata: auditRequestMetadata(request),
+  });
+
+  return jsonResponse({
+    success: true,
+    twoFactorEnabled: false,
+    newRecoveryCode: user.totpRecoveryCode,
+    object: 'twoFactorRecovery',
+  });
+}
+
 // GET /api/accounts/revision-date
 export async function handleGetRevisionDate(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
   const storage = new StorageService(env.DB);
   const revisionDate = await storage.getRevisionDate(userId);
-  
+
   // Return as milliseconds timestamp (Bitwarden format)
   const timestamp = new Date(revisionDate).getTime();
   return jsonResponse(timestamp);
@@ -200,6 +802,7 @@ export async function handleGetRevisionDate(request: Request, env: Env, userId:
 // POST /api/accounts/verify-password
 export async function handleVerifyPassword(request: Request, env: Env, userId: string): Promise<Response> {
   const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
   const user = await storage.getUserById(userId);
 
   if (!user) {
@@ -217,9 +820,91 @@ export async function handleVerifyPassword(request: Request, env: Env, userId: s
     return errorResponse('masterPasswordHash is required', 400);
   }
 
-  if (body.masterPasswordHash !== user.masterPasswordHash) {
+  const valid = await auth.verifyPassword(body.masterPasswordHash, user.masterPasswordHash, user.email);
+  if (!valid) {
     return errorResponse('Invalid password', 400);
   }
 
   return new Response(null, { status: 200 });
 }
+
+// POST /api/accounts/api-key
+export async function handleGetApiKey(request: Request, env: Env, userId: string): Promise<Response> {
+  return apiKey(request, env, userId, false);
+}
+
+// POST /api/accounts/rotate-api-key
+export async function handleRotateApiKey(request: Request, env: Env, userId: string): Promise<Response> {
+  return apiKey(request, env, userId, true);
+}
+
+async function apiKey(request: Request, env: Env, userId: string, rotate: boolean): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const auth = new AuthService(env);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  let body: Record<string, string | undefined>;
+  try {
+    const contentType = request.headers.get('content-type') || '';
+    if (contentType.includes('application/x-www-form-urlencoded')) {
+      const formData = await request.formData();
+      body = Object.fromEntries(formData.entries()) as Record<string, string>;
+    } else {
+      body = await request.json();
+    }
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const currentHash = String(body.masterPasswordHash || body.master_password_hash || body.password || '').trim();
+  if (!currentHash) return errorResponse('masterPasswordHash is required', 400);
+  const valid = await auth.verifyPassword(currentHash, user.masterPasswordHash, user.email);
+  if (!valid) return errorResponse('Invalid password', 400);
+
+  if (rotate || user.apiKey === null) {
+    // Upstream apikeys are 30-character random alphanumeric strings
+    user.apiKey = randomStringAlphanum(LIMITS.auth.clientSecretLength);
+    if (rotate) {
+      user.securityStamp = generateUUID();
+      await storage.deleteRefreshTokensByUserId(user.id);
+    }
+    user.updatedAt = new Date().toISOString();
+    await storage.saveUser(user);
+    AuthService.invalidateUserCache(user.id);
+    await writeAuditEvent(storage, {
+      actorUserId: user.id,
+      action: rotate ? 'account.api_key.rotate' : 'account.api_key.create',
+      category: 'security',
+      level: rotate ? 'security' : 'info',
+      targetType: 'user',
+      targetId: user.id,
+      metadata: auditRequestMetadata(request),
+    });
+  }
+
+  return jsonResponse({
+    apiKey: user.apiKey,
+    revisionDate: user.updatedAt,
+    object: 'apiKey',
+  });
+}
+
+// Generate a random alphanumeric string of the given length using crypto.getRandomValues.
+function randomStringAlphanum(length: number): string {
+  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+  let result = '';
+  const maxUnbiased = Math.floor(256 / chars.length) * chars.length;
+  const bytes = new Uint8Array(Math.max(16, length));
+
+  while (result.length < length) {
+    crypto.getRandomValues(bytes);
+    for (const value of bytes) {
+      if (value >= maxUnbiased) continue;
+      result += chars[value % chars.length];
+      if (result.length >= length) break;
+    }
+  }
+
+  return result;
+}

src/handlers/admin.ts

@@ -0,0 +1,395 @@
+import { Env, User, Invite } from '../types';
+import { AuthService } from '../services/auth';
+import { StorageService } from '../services/storage';
+import { jsonResponse, errorResponse } from '../utils/response';
+import { deleteBlobObject, getAttachmentObjectKey, getSendFileObjectKey } from '../services/blob-store';
+import { auditRequestMetadata, getAuditLogSettings, normalizeAuditLogSettings, saveAuditLogSettings, writeAuditEvent } from '../services/audit-events';
+
+function isAdmin(user: User): boolean {
+  return user.role === 'admin' && user.status === 'active';
+}
+
+function randomHex(bytes: number): string {
+  const data = crypto.getRandomValues(new Uint8Array(bytes));
+  return Array.from(data).map(v => v.toString(16).padStart(2, '0')).join('');
+}
+
+function buildInviteLink(request: Request, code: string): string {
+  const url = new URL(request.url);
+  return `${url.origin}/?invite=${encodeURIComponent(code)}`;
+}
+
+async function writeAuditLog(
+  storage: StorageService,
+  actorUserId: string | null,
+  action: string,
+  targetType: string | null,
+  targetId: string | null,
+  metadata: Record<string, unknown> | null,
+  request?: Request
+): Promise<void> {
+  await writeAuditEvent(storage, {
+    actorUserId,
+    action,
+    targetType,
+    targetId,
+    category: action.startsWith('admin.user.') ? 'security' : 'system',
+    level: action.startsWith('admin.user.') ? 'security' : 'info',
+    metadata: {
+      ...(metadata || {}),
+      ...(request ? auditRequestMetadata(request) : {}),
+    },
+  });
+}
+
+function toInviteResponse(request: Request, invite: Invite): Record<string, unknown> {
+  return {
+    code: invite.code,
+    status: invite.status,
+    createdBy: invite.createdBy,
+    usedBy: invite.usedBy,
+    createdAt: invite.createdAt,
+    updatedAt: invite.updatedAt,
+    expiresAt: invite.expiresAt,
+    inviteLink: buildInviteLink(request, invite.code),
+    object: 'invite',
+  };
+}
+
+// GET /api/admin/users
+export async function handleAdminListUsers(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  void request;
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const storage = new StorageService(env.DB);
+  const users = await storage.getAllUsers();
+  return jsonResponse({
+    data: users.map(user => ({
+      id: user.id,
+      email: user.email,
+      name: user.name,
+      role: user.role,
+      status: user.status,
+      twoFactorEnabled: !!user.totpSecret,
+      creationDate: user.createdAt,
+      revisionDate: user.updatedAt,
+      object: 'user',
+    })),
+    object: 'list',
+    continuationToken: null,
+  });
+}
+
+// GET /api/admin/logs
+export async function handleAdminListAuditLogs(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const url = new URL(request.url);
+  const limit = Math.max(1, Math.min(200, Number(url.searchParams.get('limit') || 50)));
+  const offset = Math.max(0, Number(url.searchParams.get('offset') || 0));
+  const category = String(url.searchParams.get('category') || '').trim() || null;
+  const level = String(url.searchParams.get('level') || '').trim() || null;
+  const q = String(url.searchParams.get('q') || '').trim().toLowerCase() || null;
+  const from = String(url.searchParams.get('from') || '').trim() || null;
+  const to = String(url.searchParams.get('to') || '').trim() || null;
+
+  const storage = new StorageService(env.DB);
+  const result = await storage.listAuditLogs({ limit, offset, category, level, q, from, to });
+  return jsonResponse({
+    data: result.logs.map(log => ({
+      id: log.id,
+      actorUserId: log.actorUserId,
+      actorEmail: log.actorEmail,
+      action: log.action,
+      category: log.category,
+      level: log.level,
+      targetType: log.targetType,
+      targetId: log.targetId,
+      targetUserEmail: log.targetUserEmail,
+      metadata: log.metadata,
+      createdAt: log.createdAt,
+      object: 'auditLog',
+    })),
+    total: result.total,
+    limit,
+    offset,
+    hasMore: result.hasMore,
+    object: 'list',
+    continuationToken: result.hasMore ? String(offset + result.logs.length) : null,
+  });
+}
+
+// GET /api/admin/logs/settings
+export async function handleAdminGetAuditLogSettings(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  void request;
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+  const storage = new StorageService(env.DB);
+  return jsonResponse({
+    object: 'auditLogSettings',
+    ...await getAuditLogSettings(storage),
+  });
+}
+
+// PUT /api/admin/logs/settings
+export async function handleAdminUpdateAuditLogSettings(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+  let body: unknown;
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+  const storage = new StorageService(env.DB);
+  const settings = await saveAuditLogSettings(storage, normalizeAuditLogSettings(body));
+  await writeAuditLog(storage, actorUser.id, 'admin.audit.settings.update', 'auditLog', null, { ...settings }, request);
+  return jsonResponse({
+    object: 'auditLogSettings',
+    ...settings,
+  });
+}
+
+// DELETE /api/admin/logs
+export async function handleAdminClearAuditLogs(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+  const storage = new StorageService(env.DB);
+  const deleted = await storage.clearAuditLogs();
+  return jsonResponse({ object: 'auditLogClear', deleted });
+}
+
+// POST /api/admin/invites
+export async function handleAdminCreateInvite(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const storage = new StorageService(env.DB);
+  let body: { expiresInHours?: number } = {};
+  try {
+    body = await request.json();
+  } catch {
+    body = {};
+  }
+
+  const expiresInHours = Number.isFinite(body.expiresInHours)
+    ? Math.max(1, Math.min(24 * 30, Math.floor(Number(body.expiresInHours))))
+    : 24 * 7;
+  const now = new Date();
+  const expiresAt = new Date(now.getTime() + expiresInHours * 60 * 60 * 1000);
+  const invite: Invite = {
+    code: randomHex(20),
+    createdBy: actorUser.id,
+    usedBy: null,
+    expiresAt: expiresAt.toISOString(),
+    status: 'active',
+    createdAt: now.toISOString(),
+    updatedAt: now.toISOString(),
+  };
+
+  await storage.createInvite(invite);
+  await writeAuditLog(storage, actorUser.id, 'admin.invite.create', 'invite', null, {
+    expiresInHours,
+  }, request);
+
+  return jsonResponse(toInviteResponse(request, invite), 201);
+}
+
+// GET /api/admin/invites
+export async function handleAdminListInvites(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const storage = new StorageService(env.DB);
+  const url = new URL(request.url);
+  const includeInactive = url.searchParams.get('includeInactive') === 'true';
+  const invites = await storage.listInvites(includeInactive);
+  return jsonResponse({
+    data: invites.map(invite => toInviteResponse(request, invite)),
+    object: 'list',
+    continuationToken: null,
+  });
+}
+
+// DELETE /api/admin/invites/:code
+export async function handleAdminRevokeInvite(
+  request: Request,
+  env: Env,
+  actorUser: User,
+  code: string
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const storage = new StorageService(env.DB);
+  const revoked = await storage.revokeInvite(code);
+  if (!revoked) {
+    return errorResponse('Invite not found or already inactive', 404);
+  }
+
+  await writeAuditLog(storage, actorUser.id, 'admin.invite.revoke', 'invite', null, null, request);
+  return new Response(null, { status: 204 });
+}
+
+// DELETE /api/admin/invites
+export async function handleAdminDeleteAllInvites(
+  request: Request,
+  env: Env,
+  actorUser: User
+): Promise<Response> {
+  void request;
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  const storage = new StorageService(env.DB);
+  const deleted = await storage.deleteAllInvites();
+  await writeAuditLog(storage, actorUser.id, 'admin.invite.delete_all', 'invite', null, {
+    deleted,
+  }, request);
+
+  return jsonResponse({ deleted }, 200);
+}
+
+// PUT /api/admin/users/:id/status
+export async function handleAdminSetUserStatus(
+  request: Request,
+  env: Env,
+  actorUser: User,
+  targetUserId: string
+): Promise<Response> {
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+
+  let body: { status?: string };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const nextStatus = body.status === 'banned' ? 'banned' : body.status === 'active' ? 'active' : null;
+  if (!nextStatus) {
+    return errorResponse('status must be active or banned', 400);
+  }
+  if (targetUserId === actorUser.id && nextStatus !== 'active') {
+    return errorResponse('You cannot ban yourself', 400);
+  }
+
+  const storage = new StorageService(env.DB);
+  const target = await storage.getUserById(targetUserId);
+  if (!target) {
+    return errorResponse('User not found', 404);
+  }
+
+  target.status = nextStatus;
+  target.updatedAt = new Date().toISOString();
+  await storage.saveUser(target);
+  if (nextStatus === 'banned') {
+    await storage.deleteRefreshTokensByUserId(target.id);
+  }
+  AuthService.invalidateUserCache(target.id);
+  await writeAuditLog(storage, actorUser.id, 'admin.user.status', 'user', target.id, {
+    status: nextStatus,
+  }, request);
+
+  return jsonResponse({
+    id: target.id,
+    email: target.email,
+    role: target.role,
+    status: target.status,
+    object: 'user',
+  });
+}
+
+// DELETE /api/admin/users/:id
+export async function handleAdminDeleteUser(
+  request: Request,
+  env: Env,
+  actorUser: User,
+  targetUserId: string
+): Promise<Response> {
+  void request;
+  if (!isAdmin(actorUser)) {
+    return errorResponse('Forbidden', 403);
+  }
+  if (targetUserId === actorUser.id) {
+    return errorResponse('You cannot delete yourself', 400);
+  }
+
+  const storage = new StorageService(env.DB);
+  const target = await storage.getUserById(targetUserId);
+  if (!target) {
+    return errorResponse('User not found', 404);
+  }
+
+  // Clean up R2 files before DB cascade deletes the metadata rows.
+  // 1. Attachment files (keyed by cipherId/attachmentId)
+  const attachmentMap = await storage.getAttachmentsByUserId(target.id);
+  for (const [cipherId, attachments] of attachmentMap) {
+    for (const att of attachments) {
+      await deleteBlobObject(env, getAttachmentObjectKey(cipherId, att.id));
+    }
+  }
+  // 2. Send files (keyed by sends/sendId/fileId)
+  const sends = await storage.getAllSends(target.id);
+  for (const send of sends) {
+    if (send.type === 1) { // SendType.File
+      try {
+        const parsed = JSON.parse(send.data) as Record<string, unknown>;
+        const fileId = typeof parsed.id === 'string' ? parsed.id : null;
+        if (fileId) {
+          await deleteBlobObject(env, getSendFileObjectKey(send.id, fileId));
+        }
+      } catch { /* non-file send or bad data, skip */ }
+    }
+  }
+
+  await storage.deleteRefreshTokensByUserId(target.id);
+  await storage.deleteUserById(target.id);
+  AuthService.invalidateUserCache(target.id);
+  await writeAuditLog(storage, actorUser.id, 'admin.user.delete', 'user', target.id, {
+    targetEmail: target.email,
+  }, request);
+
+  return new Response(null, { status: 204 });
+}

src/handlers/attachments.ts

@@ -1,9 +1,56 @@
-import { Env, Attachment } from '../types';
+import { Env, Attachment, DEFAULT_DEV_SECRET } from '../types';
+import { notifyUserVaultSync } from '../durable/notifications-hub';
 import { StorageService } from '../services/storage';
 import { jsonResponse, errorResponse } from '../utils/response';
+import { buildDirectUploadUrl, getSafeJwtSecret, parseDirectUploadPayload } from '../utils/direct-upload';
 import { generateUUID } from '../utils/uuid';
-import { createFileDownloadToken, verifyFileDownloadToken } from '../utils/jwt';
-import { cipherToResponse } from './ciphers';
+import {
+  createAttachmentUploadToken,
+  createFileDownloadToken,
+  verifyAttachmentUploadToken,
+  verifyFileDownloadToken,
+} from '../utils/jwt';
+import { applyCipherEmbeddedAttachmentMetadata, cipherToResponse } from './ciphers';
+import { LIMITS } from '../config/limits';
+import { readActingDeviceIdentifier } from '../utils/device';
+import {
+  deleteBlobObject,
+  getAttachmentObjectKey,
+  getBlobObject,
+  getBlobStorageMaxBytes,
+  putBlobObject,
+} from '../services/blob-store';
+import { auditRequestMetadata, writeAuditEvent } from '../services/audit-events';
+
+function notifyVaultSyncForRequest(
+  request: Request,
+  env: Env,
+  userId: string,
+  revisionDate: string
+): void {
+  notifyUserVaultSync(env, userId, revisionDate, readActingDeviceIdentifier(request));
+}
+
+async function writeAttachmentAudit(
+  storage: StorageService,
+  request: Request,
+  userId: string,
+  action: string,
+  metadata: Record<string, unknown>
+): Promise<void> {
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action,
+    category: 'data',
+    level: action.includes('delete') ? 'security' : 'info',
+    targetType: 'attachment',
+    targetId: typeof metadata.id === 'string' ? metadata.id : null,
+    metadata: {
+      ...metadata,
+      ...auditRequestMetadata(request),
+    },
+  });
+}
 
 // Format file size to human readable
 function formatSize(bytes: number): string {
@@ -13,9 +60,65 @@ function formatSize(bytes: number): string {
   return `${(bytes / (1024 * 1024 * 1024)).toFixed(2)} GB`;
 }
 
-// Get R2 object path for attachment
-function getAttachmentPath(cipherId: string, attachmentId: string): string {
-  return `${cipherId}/${attachmentId}`;
+async function runWithConcurrency<T>(
+  items: T[],
+  concurrency: number,
+  worker: (item: T) => Promise<void>
+): Promise<void> {
+  if (items.length === 0) return;
+  const limit = Math.max(1, concurrency);
+  for (let index = 0; index < items.length; index += limit) {
+    await Promise.all(items.slice(index, index + limit).map(worker));
+  }
+}
+
+async function processAttachmentUpload(
+  request: Request,
+  env: Env,
+  attachment: Attachment,
+  cipherId: string
+): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const maxFileSize = getBlobStorageMaxBytes(env, LIMITS.attachment.maxFileSizeBytes);
+  const upload = await parseDirectUploadPayload(request, {
+    expectedSize: Number(attachment.size) || 0,
+    maxFileSize,
+    tooLargeMessage: `File too large. Maximum size is ${Math.floor(maxFileSize / (1024 * 1024))}MB`,
+  });
+  if (upload instanceof Response) {
+    return upload;
+  }
+
+  const path = getAttachmentObjectKey(cipherId, attachment.id);
+  try {
+    await putBlobObject(env, path, upload.body, {
+      size: upload.size,
+      contentType: upload.contentType,
+      customMetadata: {
+        cipherId,
+        attachmentId: attachment.id,
+      },
+    });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    if (message.includes('KV object too large')) {
+      return errorResponse(`File too large. Maximum size is ${Math.floor(maxFileSize / (1024 * 1024))}MB`, 413);
+    }
+    return errorResponse('Attachment storage is not configured', 500);
+  }
+
+  if (upload.size !== attachment.size) {
+    attachment.size = upload.size;
+    attachment.sizeName = formatSize(upload.size);
+    await storage.saveAttachment(attachment);
+  }
+
+  const revisionInfo = await storage.updateCipherRevisionDate(cipherId);
+  if (revisionInfo) {
+    notifyVaultSyncForRequest(request, env, revisionInfo.userId, revisionInfo.revisionDate);
+  }
+
+  return new Response(null, { status: 201 });
 }
 
 // POST /api/ciphers/{cipherId}/attachment/v2
@@ -70,24 +173,29 @@ export async function handleCreateAttachment(
   await storage.addAttachmentToCipher(cipherId, attachmentId);
 
   // Update cipher revision date
-  await storage.updateCipherRevisionDate(cipherId);
+  const revisionInfo = await storage.updateCipherRevisionDate(cipherId);
+  if (revisionInfo) {
+    notifyVaultSyncForRequest(request, env, revisionInfo.userId, revisionInfo.revisionDate);
+  }
 
   // Get updated cipher for response
   const updatedCipher = await storage.getCipher(cipherId);
   const attachments = await storage.getAttachmentsByCipher(cipherId);
+  const jwtSecret = getSafeJwtSecret(env);
+  if (!jwtSecret) {
+    return errorResponse('Server configuration error', 500);
+  }
+  const uploadToken = await createAttachmentUploadToken(userId, cipherId, attachmentId, jwtSecret);
 
   return jsonResponse({
     object: 'attachment-fileUpload',
     attachmentId: attachmentId,
-    url: `/api/ciphers/${cipherId}/attachment/${attachmentId}`,
-    fileUploadType: 0, // Direct upload
+    url: buildDirectUploadUrl(request, `/api/ciphers/${cipherId}/attachment/${attachmentId}`, uploadToken),
+    fileUploadType: 1,
     cipherResponse: cipherToResponse(updatedCipher!, attachments),
   });
 }
 
-// Maximum file size: 100MB
-const MAX_FILE_SIZE = 100 * 1024 * 1024;
-
 // POST /api/ciphers/{cipherId}/attachment/{attachmentId}
 // Upload attachment file content
 export async function handleUploadAttachment(
@@ -111,54 +219,45 @@ export async function handleUploadAttachment(
     return errorResponse('Attachment not found', 404);
   }
 
-  // Check content-length header for size limit
-  const contentLength = request.headers.get('content-length');
-  if (contentLength && parseInt(contentLength) > MAX_FILE_SIZE) {
-    return errorResponse('File too large. Maximum size is 100MB', 413);
+  return processAttachmentUpload(request, env, attachment, cipherId);
+}
+
+export async function handlePublicUploadAttachment(
+  request: Request,
+  env: Env,
+  cipherId: string,
+  attachmentId: string
+): Promise<Response> {
+  const jwtSecret = getSafeJwtSecret(env);
+  if (!jwtSecret) {
+    return errorResponse('Server configuration error', 500);
   }
 
-  // Get the file from multipart form data
-  const contentType = request.headers.get('content-type') || '';
-  if (!contentType.includes('multipart/form-data')) {
-    return errorResponse('Content-Type must be multipart/form-data', 400);
+  const token = new URL(request.url).searchParams.get('token');
+  if (!token) {
+    return errorResponse('Token required', 401);
   }
 
-  const formData = await request.formData();
-  const file = formData.get('data') as File | null;
-
-  if (!file) {
-    return errorResponse('No file uploaded', 400);
+  const claims = await verifyAttachmentUploadToken(token, jwtSecret);
+  if (!claims) {
+    return errorResponse('Invalid or expired token', 401);
+  }
+  if (claims.cipherId !== cipherId || claims.attachmentId !== attachmentId) {
+    return errorResponse('Token mismatch', 401);
   }
 
-  // Check actual file size
-  if (file.size > MAX_FILE_SIZE) {
-    return errorResponse('File too large. Maximum size is 100MB', 413);
+  const storage = new StorageService(env.DB);
+  const cipher = await storage.getCipher(cipherId);
+  if (!cipher || cipher.userId !== claims.userId) {
+    return errorResponse('Cipher not found', 404);
   }
 
-  // Store file in R2
-  const path = getAttachmentPath(cipherId, attachmentId);
-  await env.ATTACHMENTS.put(path, file.stream(), {
-    httpMetadata: {
-      contentType: 'application/octet-stream',
-    },
-    customMetadata: {
-      cipherId: cipherId,
-      attachmentId: attachmentId,
-    },
-  });
-
-  // Update attachment size if different
-  const actualSize = file.size;
-  if (actualSize !== attachment.size) {
-    attachment.size = actualSize;
-    attachment.sizeName = formatSize(actualSize);
-    await storage.saveAttachment(attachment);
+  const attachment = await storage.getAttachment(attachmentId);
+  if (!attachment || attachment.cipherId !== cipherId) {
+    return errorResponse('Attachment not found', 404);
   }
 
-  // Update cipher revision date
-  await storage.updateCipherRevisionDate(cipherId);
-
-  return new Response(null, { status: 200 });
+  return processAttachmentUpload(request, env, attachment, cipherId);
 }
 
 // GET /api/ciphers/{cipherId}/attachment/{attachmentId}
@@ -183,6 +282,7 @@ export async function handleGetAttachment(
   if (!attachment || attachment.cipherId !== cipherId) {
     return errorResponse('Attachment not found', 404);
   }
+  const responseAttachment = applyCipherEmbeddedAttachmentMetadata(cipher, [attachment])[0] || attachment;
 
   // Generate short-lived download token
   const token = await createFileDownloadToken(cipherId, attachmentId, env.JWT_SECRET);
@@ -193,11 +293,69 @@ export async function handleGetAttachment(
 
   return jsonResponse({
     object: 'attachment',
-    id: attachment.id,
+    id: responseAttachment.id,
     url: downloadUrl,
+    fileName: responseAttachment.fileName,
+    key: responseAttachment.key,
+    size: String(Number(responseAttachment.size) || 0),
+    sizeName: responseAttachment.sizeName,
+  });
+}
+
+// PUT /api/ciphers/{cipherId}/attachment/{attachmentId}/metadata
+// 修正旧附件的加密元数据，供官方客户端按当前 Bitwarden 契约解密。
+export async function handleUpdateAttachmentMetadata(
+  request: Request,
+  env: Env,
+  userId: string,
+  cipherId: string,
+  attachmentId: string
+): Promise<Response> {
+  const storage = new StorageService(env.DB);
+
+  const cipher = await storage.getCipher(cipherId);
+  if (!cipher || cipher.userId !== userId) {
+    return errorResponse('Cipher not found', 404);
+  }
+
+  const attachment = await storage.getAttachment(attachmentId);
+  if (!attachment || attachment.cipherId !== cipherId) {
+    return errorResponse('Attachment not found', 404);
+  }
+
+  let body: { fileName?: string | null; key?: string | null };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  if (!Object.prototype.hasOwnProperty.call(body, 'fileName') && !Object.prototype.hasOwnProperty.call(body, 'key')) {
+    return errorResponse('No metadata fields supplied', 400);
+  }
+
+  if (Object.prototype.hasOwnProperty.call(body, 'fileName')) {
+    const fileName = String(body.fileName || '').trim();
+    if (!fileName) return errorResponse('fileName is required', 400);
+    attachment.fileName = fileName;
+  }
+  if (Object.prototype.hasOwnProperty.call(body, 'key')) {
+    const key = body.key == null ? null : String(body.key || '').trim();
+    attachment.key = key || null;
+  }
+
+  await storage.saveAttachment(attachment);
+  const revisionInfo = await storage.updateCipherRevisionDate(cipherId);
+  if (revisionInfo) {
+    notifyVaultSyncForRequest(request, env, revisionInfo.userId, revisionInfo.revisionDate);
+  }
+
+  return jsonResponse({
+    object: 'attachment',
+    id: attachment.id,
     fileName: attachment.fileName,
     key: attachment.key,
-    size: Number(attachment.size) || 0,
+    size: String(Number(attachment.size) || 0),
     sizeName: attachment.sizeName,
   });
 }
@@ -210,6 +368,11 @@ export async function handlePublicDownloadAttachment(
   cipherId: string,
   attachmentId: string
 ): Promise<Response> {
+  const secret = (env.JWT_SECRET || '').trim();
+  if (!secret || secret.length < LIMITS.auth.jwtSecretMinLength || secret === DEFAULT_DEV_SECRET) {
+    return errorResponse('Server configuration error', 500);
+  }
+
   const url = new URL(request.url);
   const token = url.searchParams.get('token');
 
@@ -229,7 +392,6 @@ export async function handlePublicDownloadAttachment(
   }
 
   const storage = new StorageService(env.DB);
-  
 
   // Verify attachment exists
   const attachment = await storage.getAttachment(attachmentId);
@@ -237,20 +399,23 @@ export async function handlePublicDownloadAttachment(
     return errorResponse('Attachment not found', 404);
   }
 
-  // Get file from R2
-  const path = getAttachmentPath(cipherId, attachmentId);
-  const object = await env.ATTACHMENTS.get(path);
+  const path = getAttachmentObjectKey(cipherId, attachmentId);
+  const object = await getBlobObject(env, path);
 
   if (!object) {
     return errorResponse('Attachment file not found', 404);
   }
 
+  const firstUse = await storage.consumeAttachmentDownloadToken(claims.jti, claims.exp);
+  if (!firstUse) {
+    return errorResponse('Invalid or expired token', 401);
+  }
+
   return new Response(object.body, {
     headers: {
-      'Content-Type': 'application/octet-stream',
+      'Content-Type': object.contentType || 'application/octet-stream',
       'Content-Length': String(object.size),
       'Cache-Control': 'private, no-cache',
-      'Access-Control-Allow-Origin': '*',
     },
   });
 }
@@ -278,18 +443,22 @@ export async function handleDeleteAttachment(
     return errorResponse('Attachment not found', 404);
   }
 
-  // Delete file from R2
-  const path = getAttachmentPath(cipherId, attachmentId);
-  await env.ATTACHMENTS.delete(path);
+  const path = getAttachmentObjectKey(cipherId, attachmentId);
+  await deleteBlobObject(env, path);
 
   // Delete attachment metadata
   await storage.deleteAttachment(attachmentId);
 
-  // Remove attachment from cipher
-  await storage.removeAttachmentFromCipher(cipherId, attachmentId);
-
   // Update cipher revision date
-  await storage.updateCipherRevisionDate(cipherId);
+  const revisionInfo = await storage.updateCipherRevisionDate(cipherId);
+  if (revisionInfo) {
+    notifyVaultSyncForRequest(request, env, revisionInfo.userId, revisionInfo.revisionDate);
+    await writeAttachmentAudit(storage, request, revisionInfo.userId, 'attachment.delete', {
+      id: attachmentId,
+      cipherId,
+      size: attachment.size,
+    });
+  }
 
   // Get updated cipher for response
   const updatedCipher = await storage.getCipher(cipherId);
@@ -305,12 +474,24 @@ export async function deleteAllAttachmentsForCipher(
   env: Env,
   cipherId: string
 ): Promise<void> {
-  const storage = new StorageService(env.DB);
-  const attachments = await storage.getAttachmentsByCipher(cipherId);
-
-  for (const attachment of attachments) {
-    const path = getAttachmentPath(cipherId, attachment.id);
-    await env.ATTACHMENTS.delete(path);
-    await storage.deleteAttachment(attachment.id);
-  }
+  await deleteAllAttachmentsForCiphers(env, [cipherId]);
+}
+
+export async function deleteAllAttachmentsForCiphers(
+  env: Env,
+  cipherIds: string[]
+): Promise<void> {
+  const storage = new StorageService(env.DB);
+  const attachmentsByCipher = await storage.getAttachmentsByCipherIds(cipherIds);
+  const attachments = Array.from(attachmentsByCipher.entries()).flatMap(([ownedCipherId, items]) =>
+    items.map((attachment) => ({ attachment, cipherId: ownedCipherId }))
+  );
+  if (!attachments.length) return;
+
+  await runWithConcurrency(attachments, LIMITS.performance.attachmentDeleteConcurrency, async ({ attachment, cipherId }) => {
+    const path = getAttachmentObjectKey(cipherId, attachment.id);
+    await deleteBlobObject(env, path);
+  });
+
+  await storage.bulkDeleteAttachmentsByIds(attachments.map(({ attachment }) => attachment.id));
 }

src/handlers/devices.ts

@@ -0,0 +1,602 @@
+import type { Device, DevicePendingAuthRequest, DeviceResponse, ProtectedDeviceResponse as ProtectedDeviceWireResponse } from '../types';
+import { Env } from '../types';
+import { getOnlineUserDevices, notifyUserLogout } from '../durable/notifications-hub';
+import { AuthService } from '../services/auth';
+import { auditRequestMetadata, writeAuditEvent } from '../services/audit-events';
+import { StorageService } from '../services/storage';
+import { errorResponse, jsonResponse } from '../utils/response';
+import { readKnownDeviceProbe } from '../utils/device';
+import { generateUUID } from '../utils/uuid';
+
+const PERMANENT_TRUST_EXPIRES_AT_MS = Date.UTC(2099, 11, 31, 23, 59, 59);
+
+function normalizeIdentifier(value: string | null | undefined): string {
+  return String(value || '').trim();
+}
+
+function buildDevicePendingAuthRequest(value?: { id?: string | null; creationDate?: string | null } | null): DevicePendingAuthRequest | null {
+  if (!value?.id || !value.creationDate) return null;
+  return {
+    id: String(value.id),
+    creationDate: String(value.creationDate),
+  };
+}
+
+function isTrustedDevice(device: Pick<Device, 'encryptedUserKey' | 'encryptedPublicKey'>): boolean {
+  return !!(device.encryptedUserKey && device.encryptedPublicKey);
+}
+
+function buildDeviceResponse(device: Device): DeviceResponse {
+  const displayName = String(device.deviceNote || '').trim() || device.name;
+  const response = {
+    Id: device.deviceIdentifier,
+    id: device.deviceIdentifier,
+    UserId: device.userId,
+    userId: device.userId,
+    Name: displayName,
+    name: displayName,
+    SystemName: device.name,
+    systemName: device.name,
+    DeviceNote: device.deviceNote,
+    deviceNote: device.deviceNote,
+    Identifier: device.deviceIdentifier,
+    identifier: device.deviceIdentifier,
+    Type: device.type,
+    type: device.type,
+    CreationDate: device.createdAt,
+    creationDate: device.createdAt,
+    RevisionDate: device.updatedAt,
+    revisionDate: device.updatedAt,
+    LastSeenAt: device.lastSeenAt,
+    lastSeenAt: device.lastSeenAt,
+    HasStoredDevice: true,
+    hasStoredDevice: true,
+    IsTrusted: isTrustedDevice(device),
+    isTrusted: isTrustedDevice(device),
+    EncryptedUserKey: device.encryptedUserKey,
+    encryptedUserKey: device.encryptedUserKey,
+    EncryptedPublicKey: device.encryptedPublicKey,
+    encryptedPublicKey: device.encryptedPublicKey,
+    DevicePendingAuthRequest: buildDevicePendingAuthRequest(device.devicePendingAuthRequest),
+    devicePendingAuthRequest: buildDevicePendingAuthRequest(device.devicePendingAuthRequest),
+    object: 'device',
+  };
+  return response as DeviceResponse;
+}
+
+function buildProtectedDeviceResponse(device: Device): ProtectedDeviceWireResponse {
+  const response = {
+    Id: device.deviceIdentifier,
+    id: device.deviceIdentifier,
+    Name: String(device.deviceNote || '').trim() || device.name,
+    name: String(device.deviceNote || '').trim() || device.name,
+    SystemName: device.name,
+    systemName: device.name,
+    DeviceNote: device.deviceNote,
+    deviceNote: device.deviceNote,
+    Identifier: device.deviceIdentifier,
+    identifier: device.deviceIdentifier,
+    Type: device.type,
+    type: device.type,
+    CreationDate: device.createdAt,
+    creationDate: device.createdAt,
+    EncryptedUserKey: device.encryptedUserKey,
+    encryptedUserKey: device.encryptedUserKey,
+    EncryptedPublicKey: device.encryptedPublicKey,
+    encryptedPublicKey: device.encryptedPublicKey,
+    object: 'protectedDevice',
+  };
+  return response as ProtectedDeviceWireResponse;
+}
+
+function parseKeysBody(body: any, fallback?: Device): {
+  encryptedUserKey?: string | null;
+  encryptedPublicKey?: string | null;
+  encryptedPrivateKey?: string | null;
+} {
+  return {
+    encryptedUserKey:
+      Object.prototype.hasOwnProperty.call(body || {}, 'encryptedUserKey')
+        ? body?.encryptedUserKey ?? null
+        : fallback?.encryptedUserKey ?? null,
+    encryptedPublicKey:
+      Object.prototype.hasOwnProperty.call(body || {}, 'encryptedPublicKey')
+        ? body?.encryptedPublicKey ?? null
+        : fallback?.encryptedPublicKey ?? null,
+    encryptedPrivateKey:
+      Object.prototype.hasOwnProperty.call(body || {}, 'encryptedPrivateKey')
+        ? body?.encryptedPrivateKey ?? null
+        : fallback?.encryptedPrivateKey ?? null,
+  };
+}
+
+async function readJsonBody(request: Request): Promise<any> {
+  try {
+    return await request.json();
+  } catch {
+    return null;
+  }
+}
+
+function parseDeviceName(value: unknown): string {
+  return String(value || '').trim().slice(0, 128);
+}
+
+// GET /api/devices/knowndevice
+// Compatible with Bitwarden/Vaultwarden behavior:
+// - X-Request-Email: base64url(email) without padding
+// - X-Device-Identifier: client device identifier
+export async function handleKnownDevice(request: Request, env: Env): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const { email, deviceIdentifier } = readKnownDeviceProbe(request);
+
+  if (!email || !deviceIdentifier) {
+    return jsonResponse(false);
+  }
+
+  const known = await storage.isKnownDeviceByEmail(email, deviceIdentifier);
+  return jsonResponse(known);
+}
+
+// GET /api/devices
+export async function handleGetDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const devices = await storage.getDevicesByUserId(userId);
+
+  return jsonResponse({
+    data: devices.map((device) => buildDeviceResponse(device)),
+    object: 'list',
+    continuationToken: null,
+  });
+}
+
+// GET /api/devices/identifier/:deviceIdentifier
+export async function handleGetDeviceByIdentifier(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = normalizeIdentifier(deviceIdentifier);
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  const device = await storage.getDevice(userId, normalized);
+  if (!device) {
+    return errorResponse('Device not found', 404);
+  }
+
+  return jsonResponse(buildDeviceResponse(device));
+}
+
+// GET /api/devices/:deviceIdentifier
+export async function handleGetDevice(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  return handleGetDeviceByIdentifier(request, env, userId, deviceIdentifier);
+}
+
+// GET /api/devices/authorized
+// Returns known devices together with active 2FA remember-token expiry.
+export async function handleGetAuthorizedDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const [devices, trusted, onlineDeviceIdentifiers] = await Promise.all([
+    storage.getDevicesByUserId(userId),
+    storage.getTrustedDeviceTokenSummariesByUserId(userId),
+    getOnlineUserDevices(env, userId),
+  ]);
+  const onlineSet = new Set(onlineDeviceIdentifiers);
+
+  const trustedByIdentifier = new Map<string, { expiresAt: number; tokenCount: number }>();
+  for (const row of trusted) {
+    trustedByIdentifier.set(row.deviceIdentifier, { expiresAt: row.expiresAt, tokenCount: row.tokenCount });
+  }
+
+  const knownIdentifiers = new Set<string>();
+  const data = devices.map(device => {
+    knownIdentifiers.add(device.deviceIdentifier);
+    const trustedInfo = trustedByIdentifier.get(device.deviceIdentifier);
+    return {
+      ...buildDeviceResponse(device),
+      online: onlineSet.has(device.deviceIdentifier),
+      trusted: !!trustedInfo,
+      trustedTokenCount: trustedInfo?.tokenCount || 0,
+      trustedUntil: trustedInfo?.expiresAt ? new Date(trustedInfo.expiresAt).toISOString() : null,
+      object: 'device',
+    };
+  });
+
+  for (const row of trusted) {
+    if (knownIdentifiers.has(row.deviceIdentifier)) continue;
+    const placeholderDevice: Device = {
+      userId,
+      deviceIdentifier: row.deviceIdentifier,
+      name: 'Unknown device',
+      type: 14,
+      sessionStamp: '',
+      encryptedUserKey: null,
+      encryptedPublicKey: null,
+      encryptedPrivateKey: null,
+      devicePendingAuthRequest: null,
+      deviceNote: null,
+      lastSeenAt: null,
+      createdAt: '',
+      updatedAt: '',
+    };
+    data.push({
+      ...buildDeviceResponse(placeholderDevice),
+      isTrusted: true,
+      hasStoredDevice: false,
+      online: onlineSet.has(row.deviceIdentifier),
+      trusted: true,
+      trustedTokenCount: row.tokenCount,
+      trustedUntil: row.expiresAt ? new Date(row.expiresAt).toISOString() : null,
+      object: 'device',
+    });
+  }
+
+  return jsonResponse({
+    data,
+    object: 'list',
+    continuationToken: null,
+  });
+}
+
+// DELETE /api/devices/authorized
+export async function handleRevokeAllTrustedDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const removed = await storage.deleteTrustedTwoFactorTokensByUserId(userId);
+  return jsonResponse({ success: true, removed });
+}
+
+// DELETE /api/devices/authorized/:deviceIdentifier
+export async function handleRevokeTrustedDevice(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = String(deviceIdentifier || '').trim();
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  const removed = await storage.deleteTrustedTwoFactorTokensByDevice(userId, normalized);
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.trust.revoke',
+    category: 'device',
+    level: 'security',
+    targetType: 'device',
+    targetId: normalized,
+    metadata: { removed, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse({ success: true, removed });
+}
+
+// POST /api/devices/authorized/:deviceIdentifier/permanent
+// Upgrades an existing active 2FA remember-token record to permanent trust.
+export async function handleTrustDevicePermanently(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = String(deviceIdentifier || '').trim();
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  const updated = await storage.updateTrustedTwoFactorTokensExpiryByDevice(userId, normalized, PERMANENT_TRUST_EXPIRES_AT_MS);
+  if (!updated) return errorResponse('Device is not currently trusted', 409);
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.trust.permanent',
+    category: 'device',
+    level: 'security',
+    targetType: 'device',
+    targetId: normalized,
+    metadata: { updated, ...auditRequestMetadata(request) },
+  });
+
+  return jsonResponse({
+    success: true,
+    updated,
+    trustedUntil: new Date(PERMANENT_TRUST_EXPIRES_AT_MS).toISOString(),
+  });
+}
+
+// DELETE /api/devices/:deviceIdentifier
+export async function handleDeleteDevice(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = String(deviceIdentifier || '').trim();
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  await storage.deleteTrustedTwoFactorTokensByDevice(userId, normalized);
+  await storage.deleteRefreshTokensByDevice(userId, normalized);
+  const deleted = await storage.deleteDevice(userId, normalized);
+  if (deleted) {
+    AuthService.invalidateDeviceCache(userId, normalized);
+    notifyUserLogout(env, userId, normalized);
+  }
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.delete',
+    category: 'device',
+    level: 'security',
+    targetType: 'device',
+    targetId: normalized,
+    metadata: { deleted, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse({ success: deleted });
+}
+
+// PUT /api/devices/:deviceIdentifier/name
+export async function handleUpdateDeviceName(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  const normalized = String(deviceIdentifier || '').trim();
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const body = await readJsonBody(request);
+  const name = parseDeviceName(body?.name);
+  if (!name) return errorResponse('Device name is required', 400);
+
+  const storage = new StorageService(env.DB);
+  const updated = await storage.updateDeviceName(userId, normalized, name);
+  if (!updated) return errorResponse('Device not found', 404);
+
+  const device = await storage.getDevice(userId, normalized);
+  if (!device) return errorResponse('Device not found', 404);
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.name.update',
+    category: 'device',
+    level: 'info',
+    targetType: 'device',
+    targetId: normalized,
+    metadata: { name, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse(buildDeviceResponse(device));
+}
+
+// DELETE /api/devices
+export async function handleDeleteAllDevices(request: Request, env: Env, userId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const user = await storage.getUserById(userId);
+  if (!user) return errorResponse('User not found', 404);
+
+  const [removedTrusted, removedSessions, removedDevices] = await Promise.all([
+    storage.deleteTrustedTwoFactorTokensByUserId(userId),
+    storage.deleteRefreshTokensByUserId(userId),
+    storage.deleteDevicesByUserId(userId),
+  ]);
+  user.securityStamp = generateUUID();
+  user.updatedAt = new Date().toISOString();
+  await storage.saveUser(user);
+  AuthService.invalidateUserCache(userId);
+  notifyUserLogout(env, userId, null);
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.delete_all',
+    category: 'device',
+    level: 'security',
+    targetType: 'user',
+    targetId: userId,
+    metadata: { removedTrusted, removedSessions, removedDevices, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse({ success: true, removedTrusted, removedSessions: removedSessions ?? 0, removedDevices });
+}
+
+// PUT/POST /api/devices/identifier/:deviceIdentifier/keys
+export async function handleUpdateDeviceKeys(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  const normalized = normalizeIdentifier(deviceIdentifier);
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const body = await readJsonBody(request);
+  const storage = new StorageService(env.DB);
+  const device = await storage.getDevice(userId, normalized);
+  if (!device) {
+    return errorResponse('Device not found', 404);
+  }
+
+  const updated = await storage.updateDeviceKeys(userId, normalized, parseKeysBody(body, device));
+  if (!updated) {
+    return errorResponse('Device not found', 404);
+  }
+
+  const nextDevice = await storage.getDevice(userId, normalized);
+  return jsonResponse(buildDeviceResponse(nextDevice || device));
+}
+
+// POST /api/devices/update-trust
+export async function handleUpdateDeviceTrust(
+  request: Request,
+  env: Env,
+  userId: string
+): Promise<Response> {
+  const body = await readJsonBody(request);
+  const storage = new StorageService(env.DB);
+  const currentDeviceIdentifier =
+    normalizeIdentifier(request.headers.get('Device-Identifier')) ||
+    normalizeIdentifier(request.headers.get('X-Device-Identifier'));
+
+  const updates: Array<{
+    deviceIdentifier: string;
+    keys: {
+      encryptedUserKey?: string | null;
+      encryptedPublicKey?: string | null;
+      encryptedPrivateKey?: string | null;
+    };
+  }> = [];
+
+  if (currentDeviceIdentifier && body?.currentDevice) {
+    updates.push({
+      deviceIdentifier: currentDeviceIdentifier,
+      keys: parseKeysBody(body.currentDevice, await storage.getDevice(userId, currentDeviceIdentifier) || undefined),
+    });
+  }
+
+  if (Array.isArray(body?.otherDevices)) {
+    for (const item of body.otherDevices) {
+      const deviceIdentifier = normalizeIdentifier(item?.deviceId);
+      if (!deviceIdentifier) continue;
+      updates.push({
+        deviceIdentifier,
+        keys: parseKeysBody(item, await storage.getDevice(userId, deviceIdentifier) || undefined),
+      });
+    }
+  }
+
+  let updatedCount = 0;
+  for (const update of updates) {
+    const ok = await storage.updateDeviceKeys(userId, update.deviceIdentifier, update.keys);
+    if (ok) updatedCount++;
+  }
+
+  return jsonResponse({ success: true, updated: updatedCount });
+}
+
+// POST /api/devices/untrust
+export async function handleUntrustDevices(
+  request: Request,
+  env: Env,
+  userId: string
+): Promise<Response> {
+  const body = await readJsonBody(request);
+  const storage = new StorageService(env.DB);
+  const devices = Array.isArray(body?.devices) ? body.devices.map((id: unknown) => normalizeIdentifier(String(id))) : [];
+  const removed = await storage.clearDeviceKeys(userId, devices);
+  for (const deviceIdentifier of devices) {
+    if (!deviceIdentifier) continue;
+    await storage.deleteTrustedTwoFactorTokensByDevice(userId, deviceIdentifier);
+  }
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.trust.revoke_batch',
+    category: 'device',
+    level: 'security',
+    targetType: 'user',
+    targetId: userId,
+    metadata: { requested: devices.length, removed, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse({ success: true, removed });
+}
+
+// POST /api/devices/:deviceIdentifier/retrieve-keys
+export async function handleRetrieveDeviceKeys(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = normalizeIdentifier(deviceIdentifier);
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  const device = await storage.getDevice(userId, normalized);
+  if (!device) {
+    return errorResponse('Device not found', 404);
+  }
+
+  return jsonResponse(buildProtectedDeviceResponse(device));
+}
+
+// POST /api/devices/:id/deactivate
+export async function handleDeactivateDevice(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  const normalized = normalizeIdentifier(deviceIdentifier);
+  if (!normalized) return errorResponse('Invalid device identifier', 400);
+
+  const storage = new StorageService(env.DB);
+  await storage.deleteTrustedTwoFactorTokensByDevice(userId, normalized);
+  await storage.deleteRefreshTokensByDevice(userId, normalized);
+  const deleted = await storage.deleteDevice(userId, normalized);
+  if (deleted) {
+    AuthService.invalidateDeviceCache(userId, normalized);
+    notifyUserLogout(env, userId, normalized);
+  }
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action: 'device.deactivate',
+    category: 'device',
+    level: 'security',
+    targetType: 'device',
+    targetId: normalized,
+    metadata: { deleted, ...auditRequestMetadata(request) },
+  });
+  return jsonResponse({ success: deleted });
+}
+
+// PUT /api/devices/identifier/{deviceIdentifier}/token
+// Bitwarden mobile reports push token updates to this endpoint.
+// NodeWarden does not implement push notifications, so accept and no-op.
+export async function handleUpdateDeviceToken(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  void env;
+  void userId;
+  void deviceIdentifier;
+  return new Response(null, { status: 200 });
+}
+
+// PUT/POST /api/devices/:deviceIdentifier/web-push-auth
+export async function handleUpdateDeviceWebPushAuth(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  void env;
+  void userId;
+  void deviceIdentifier;
+  return new Response(null, { status: 200 });
+}
+
+// PUT/POST /api/devices/:deviceIdentifier/clear-token
+export async function handleClearDeviceToken(
+  request: Request,
+  env: Env,
+  userId: string,
+  deviceIdentifier: string
+): Promise<Response> {
+  void request;
+  void env;
+  void userId;
+  void deviceIdentifier;
+  return new Response(null, { status: 200 });
+}
+

src/handlers/domains.ts

@@ -0,0 +1,85 @@
+import type { Env } from '../types';
+import { StorageService } from '../services/storage';
+import {
+  buildDomainsResponse,
+  customRulesToActiveEquivalentDomains,
+  normalizeCustomEquivalentDomains,
+  normalizeEquivalentDomains,
+  normalizeExcludedGlobalTypes,
+} from '../services/domain-rules';
+import { errorResponse, jsonResponse } from '../utils/response';
+
+// CONTRACT:
+// This route accepts both camelCase and PascalCase Bitwarden-compatible payloads.
+// It stores custom rules, then derives equivalentDomains from the non-excluded
+// custom rules. Keep this behavior aligned with backup import/export and
+// src/services/storage-domain-rules-repo.ts.
+function firstPresent(payload: Record<string, unknown>, keys: string[]): unknown {
+  for (const key of keys) {
+    if (Object.prototype.hasOwnProperty.call(payload, key)) return payload[key];
+  }
+  return undefined;
+}
+
+async function readPayload(request: Request): Promise<Record<string, unknown>> {
+  try {
+    const parsed = await request.json();
+    return parsed && typeof parsed === 'object' && !Array.isArray(parsed)
+      ? parsed as Record<string, unknown>
+      : {};
+  } catch {
+    return {};
+  }
+}
+
+export async function handleGetDomains(env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const settings = await storage.getUserDomainSettings(userId);
+  return jsonResponse(buildDomainsResponse(
+    settings.equivalentDomains,
+    settings.customEquivalentDomains,
+    settings.excludedGlobalEquivalentDomains
+  ));
+}
+
+export async function handleUpdateDomains(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const payload = await readPayload(request);
+  const current = await storage.getUserDomainSettings(userId);
+  const equivalentDomainsRaw = firstPresent(payload, [
+    'equivalentDomains',
+    'EquivalentDomains',
+  ]);
+  const customEquivalentDomainsRaw = firstPresent(payload, [
+    'customEquivalentDomains',
+    'CustomEquivalentDomains',
+  ]);
+  const excludedGlobalEquivalentDomainsRaw = firstPresent(payload, [
+    'excludedGlobalEquivalentDomains',
+    'ExcludedGlobalEquivalentDomains',
+    // Some older compatible clients send the excluded type list under this key.
+    'globalEquivalentDomains',
+    'GlobalEquivalentDomains',
+  ]);
+  const customEquivalentDomains = customEquivalentDomainsRaw === undefined
+    ? (equivalentDomainsRaw === undefined
+        ? current.customEquivalentDomains
+        : normalizeCustomEquivalentDomains(normalizeEquivalentDomains(equivalentDomainsRaw)))
+    : normalizeCustomEquivalentDomains(customEquivalentDomainsRaw);
+  const equivalentDomains = customRulesToActiveEquivalentDomains(customEquivalentDomains);
+  const excludedGlobalEquivalentDomains = excludedGlobalEquivalentDomainsRaw === undefined
+    ? current.excludedGlobalEquivalentDomains
+    : normalizeExcludedGlobalTypes(excludedGlobalEquivalentDomainsRaw);
+
+  await storage.saveUserDomainSettings(userId, equivalentDomains, customEquivalentDomains, excludedGlobalEquivalentDomains);
+
+  const settings = await storage.getUserDomainSettings(userId);
+  if (!settings) {
+    return errorResponse('Domain settings unavailable', 500);
+  }
+  return jsonResponse(buildDomainsResponse(
+    settings.equivalentDomains,
+    settings.customEquivalentDomains,
+    settings.excludedGlobalEquivalentDomains
+  ));
+}

src/handlers/folders.ts

@@ -1,7 +1,41 @@
 import { Env, Folder, FolderResponse } from '../types';
+import { notifyUserVaultSync } from '../durable/notifications-hub';
 import { StorageService } from '../services/storage';
 import { jsonResponse, errorResponse } from '../utils/response';
+import { readActingDeviceIdentifier } from '../utils/device';
 import { generateUUID } from '../utils/uuid';
+import { parsePagination, encodeContinuationToken } from '../utils/pagination';
+import { auditRequestMetadata, writeAuditEvent } from '../services/audit-events';
+
+function notifyVaultSyncForRequest(
+  request: Request,
+  env: Env,
+  userId: string,
+  revisionDate: string
+): void {
+  notifyUserVaultSync(env, userId, revisionDate, readActingDeviceIdentifier(request));
+}
+
+async function writeFolderAudit(
+  storage: StorageService,
+  request: Request,
+  userId: string,
+  action: string,
+  metadata: Record<string, unknown>
+): Promise<void> {
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action,
+    category: 'data',
+    level: action.includes('delete') ? 'security' : 'info',
+    targetType: 'folder',
+    targetId: typeof metadata.id === 'string' ? metadata.id : null,
+    metadata: {
+      ...metadata,
+      ...auditRequestMetadata(request),
+    },
+  });
+}
 
 // Convert internal folder to API response format
 function folderToResponse(folder: Folder): FolderResponse {
@@ -9,6 +43,7 @@ function folderToResponse(folder: Folder): FolderResponse {
     id: folder.id,
     name: folder.name,
     revisionDate: folder.updatedAt,
+    creationDate: folder.createdAt,
     object: 'folder',
   };
 }
@@ -16,12 +51,24 @@ function folderToResponse(folder: Folder): FolderResponse {
 // GET /api/folders
 export async function handleGetFolders(request: Request, env: Env, userId: string): Promise<Response> {
   const storage = new StorageService(env.DB);
-  const folders = await storage.getAllFolders(userId);
+  const url = new URL(request.url);
+  const pagination = parsePagination(url);
+
+  let folders: Folder[];
+  let continuationToken: string | null = null;
+  if (pagination) {
+    const pageRows = await storage.getFoldersPage(userId, pagination.limit + 1, pagination.offset);
+    const hasNext = pageRows.length > pagination.limit;
+    folders = hasNext ? pageRows.slice(0, pagination.limit) : pageRows;
+    continuationToken = hasNext ? encodeContinuationToken(pagination.offset + folders.length) : null;
+  } else {
+    folders = await storage.getAllFolders(userId);
+  }
 
   return jsonResponse({
     data: folders.map(folderToResponse),
     object: 'list',
-    continuationToken: null,
+    continuationToken: continuationToken,
   });
 }
 
@@ -62,7 +109,8 @@ export async function handleCreateFolder(request: Request, env: Env, userId: str
   };
 
   await storage.saveFolder(folder);
-  await storage.updateRevisionDate(userId);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
 
   return jsonResponse(folderToResponse(folder), 200);
 }
@@ -89,7 +137,8 @@ export async function handleUpdateFolder(request: Request, env: Env, userId: str
   folder.updatedAt = new Date().toISOString();
 
   await storage.saveFolder(folder);
-  await storage.updateRevisionDate(userId);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
 
   return jsonResponse(folderToResponse(folder));
 }
@@ -103,8 +152,40 @@ export async function handleDeleteFolder(request: Request, env: Env, userId: str
     return errorResponse('Folder not found', 404);
   }
 
+  await storage.clearFolderFromCiphers(userId, id);
   await storage.deleteFolder(id, userId);
-  await storage.updateRevisionDate(userId);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+  await writeFolderAudit(storage, request, userId, 'folder.delete', {
+    id,
+  });
+
+  return new Response(null, { status: 204 });
+}
+
+// POST /api/folders/delete
+export async function handleBulkDeleteFolders(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+
+  let body: { ids?: string[] };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const ids = Array.isArray(body.ids) ? body.ids.map((id) => String(id || '').trim()).filter(Boolean) : [];
+  if (!ids.length) {
+    return errorResponse('Folder ids are required', 400);
+  }
+
+  const revisionDate = await storage.bulkDeleteFolders(ids, userId);
+  if (revisionDate) {
+    notifyVaultSyncForRequest(request, env, userId, revisionDate);
+    await writeFolderAudit(storage, request, userId, 'folder.delete.bulk', {
+      count: ids.length,
+    });
+  }
 
   return new Response(null, { status: 204 });
 }

src/handlers/identity.ts

@@ -1,8 +1,203 @@
 import { Env, TokenResponse } from '../types';
 import { StorageService } from '../services/storage';
 import { AuthService } from '../services/auth';
-import { RateLimitService } from '../services/ratelimit';
+import { RateLimitService, getClientIdentifier } from '../services/ratelimit';
 import { jsonResponse, errorResponse, identityErrorResponse } from '../utils/response';
+import { LIMITS } from '../config/limits';
+import { isTotpEnabled, verifyTotpToken } from '../utils/totp';
+import { createRefreshToken } from '../utils/jwt';
+import { readAuthRequestDeviceInfo } from '../utils/device';
+import { createRecoveryCode, recoveryCodeEquals } from '../utils/recovery-code';
+import { generateUUID } from '../utils/uuid';
+import { issueSendAccessToken } from './sends';
+import {
+  buildAccountKeys,
+  buildUserDecryptionOptions,
+} from '../utils/user-decryption';
+import { auditRequestMetadata, safeWriteAuditEvent } from '../services/audit-events';
+import {
+  assertAccountPasskeyCredential,
+  buildAccountPasskeyTokenUserDecryptionOption,
+} from './account-passkeys';
+
+const TWO_FACTOR_REMEMBER_TTL_MS = 30 * 24 * 60 * 60 * 1000;
+const TWO_FACTOR_PROVIDER_AUTHENTICATOR = 0;
+const TWO_FACTOR_PROVIDER_REMEMBER = 5;
+const WEB_REFRESH_COOKIE = 'nodewarden_web_refresh';
+// Android client (2026.2.x) deserializes TwoFactorProviders2 keys with -1 for recovery code.
+// Keep request parsing backward-compatible with historical provider values (8 / 100).
+const TWO_FACTOR_PROVIDER_RECOVERY_CODE_RESPONSE = '-1';
+const TWO_FACTOR_PROVIDER_RECOVERY_CODE_LEGACY = 8;
+const TWO_FACTOR_PROVIDER_RECOVERY_CODE_ANDROID_REQUEST = 100;
+
+function resolveTotpSecret(userSecret: string | null): string | null {
+  if (userSecret && isTotpEnabled(userSecret)) {
+    return userSecret;
+  }
+  return null;
+}
+
+async function resolveDeviceSession(
+  storage: StorageService,
+  userId: string,
+  deviceInfo: ReturnType<typeof readAuthRequestDeviceInfo>
+): Promise<{ identifier: string; sessionStamp: string } | null> {
+  if (!deviceInfo.deviceIdentifier) return null;
+  const existingDevice = await storage.getDevice(userId, deviceInfo.deviceIdentifier);
+  const sessionStamp = String(existingDevice?.sessionStamp || '').trim() || generateUUID();
+  return { identifier: deviceInfo.deviceIdentifier, sessionStamp };
+}
+
+function shouldUseWebSession(request: Request): boolean {
+  return String(request.headers.get('X-NodeWarden-Web-Session') || '').trim() === '1';
+}
+
+function parseCookieValue(request: Request, name: string): string | null {
+  const rawCookie = String(request.headers.get('Cookie') || '').trim();
+  if (!rawCookie) return null;
+  for (const part of rawCookie.split(';')) {
+    const [key, ...rest] = part.trim().split('=');
+    if (key !== name) continue;
+    const value = rest.join('=').trim();
+    return value ? decodeURIComponent(value) : null;
+  }
+  return null;
+}
+
+function constantTimeEquals(a: string, b: string): boolean {
+  const encA = new TextEncoder().encode(a);
+  const encB = new TextEncoder().encode(b);
+  if (encA.length !== encB.length) return false;
+
+  let diff = 0;
+  for (let i = 0; i < encA.length; i++) {
+    diff |= encA[i] ^ encB[i];
+  }
+  return diff === 0;
+}
+
+function buildRefreshCookie(request: Request, refreshToken: string, maxAgeSeconds: number): string {
+  const isHttps = new URL(request.url).protocol === 'https:';
+  const parts = [
+    `${WEB_REFRESH_COOKIE}=${encodeURIComponent(refreshToken)}`,
+    'Path=/identity/connect',
+    'HttpOnly',
+    'SameSite=Strict',
+    `Max-Age=${Math.max(0, Math.floor(maxAgeSeconds))}`,
+  ];
+  if (isHttps) parts.push('Secure');
+  return parts.join('; ');
+}
+
+function buildClearedRefreshCookie(request: Request): string {
+  return buildRefreshCookie(request, '', 0);
+}
+
+function withWebRefreshCookie(request: Request, response: Response, refreshToken: string | null): Response {
+  const headers = new Headers(response.headers);
+  headers.append(
+    'Set-Cookie',
+    refreshToken
+      ? buildRefreshCookie(request, refreshToken, Math.floor(LIMITS.auth.refreshTokenTtlMs / 1000))
+      : buildClearedRefreshCookie(request)
+  );
+  return new Response(response.body, {
+    status: response.status,
+    statusText: response.statusText,
+    headers,
+  });
+}
+
+function buildPreloginResponse(
+  email: string,
+  kdfType: number,
+  kdfIterations: number,
+  kdfMemory: number | null,
+  kdfParallelism: number | null
+): Record<string, unknown> {
+  return {
+    kdf: kdfType,
+    kdfIterations,
+    kdfMemory,
+    kdfParallelism,
+    KdfSettings: {
+      KdfType: kdfType,
+      Iterations: kdfIterations,
+      Memory: kdfMemory,
+      Parallelism: kdfParallelism,
+    },
+    Salt: email.toLowerCase(),
+  };
+}
+
+function twoFactorRequiredResponse(message: string = 'Two factor required.', includeRecoveryCode: boolean = false): Response {
+  const providers = includeRecoveryCode
+    ? [String(TWO_FACTOR_PROVIDER_AUTHENTICATOR), TWO_FACTOR_PROVIDER_RECOVERY_CODE_RESPONSE]
+    : [String(TWO_FACTOR_PROVIDER_AUTHENTICATOR)];
+  const providers2: Record<string, null> = {};
+  for (const provider of providers) providers2[provider] = null;
+  const customResponse = {
+    TwoFactorProviders: providers,
+    TwoFactorProviders2: providers2,
+    SsoEmail2faSessionToken: null,
+    MasterPasswordPolicy: {
+      Object: 'masterPasswordPolicy',
+    },
+  };
+
+  // Bitwarden clients rely on these fields to trigger the 2FA UI flow.
+  return jsonResponse(
+    {
+      error: 'invalid_grant',
+      error_description: message,
+      Error: 'invalid_grant',
+      ErrorDescription: message,
+      ErrorMessage: message,
+      TwoFactorProviders: customResponse.TwoFactorProviders,
+      TwoFactorProviders2: customResponse.TwoFactorProviders2,
+      // Required by current Android parser (nullable value is acceptable).
+      SsoEmail2faSessionToken: customResponse.SsoEmail2faSessionToken,
+      MasterPasswordPolicy: customResponse.MasterPasswordPolicy,
+      CustomResponse: customResponse,
+      ErrorModel: {
+        Message: message,
+        Object: 'error',
+      },
+    },
+    400
+  );
+}
+
+async function recordFailedLoginAndBuildResponse(
+  rateLimit: RateLimitService,
+  loginIdentifier: string,
+  message: string
+): Promise<Response> {
+  const result = await rateLimit.recordFailedLogin(loginIdentifier);
+  if (result.locked) {
+    return identityErrorResponse(
+      `Too many failed login attempts. Account locked for ${Math.ceil(result.retryAfterSeconds! / 60)} minutes.`,
+      'TooManyRequests',
+      429
+    );
+  }
+  return identityErrorResponse(message, 'invalid_grant', 400);
+}
+
+async function recordFailedTwoFactorAndBuildResponse(
+  rateLimit: RateLimitService,
+  loginIdentifier: string
+): Promise<Response> {
+  const failed = await rateLimit.recordFailedLogin(loginIdentifier);
+  if (failed.locked) {
+    return identityErrorResponse(
+      `Too many failed login attempts. Account locked for ${Math.ceil(failed.retryAfterSeconds! / 60)} minutes.`,
+      'TooManyRequests',
+      429
+    );
+  }
+  return identityErrorResponse('Two-step token is invalid. Try again.', 'invalid_grant', 400);
+}
 
 // POST /identity/connect/token
 export async function handleToken(request: Request, env: Env): Promise<Response> {
@@ -12,33 +207,40 @@ export async function handleToken(request: Request, env: Env): Promise<Response>
 
   let body: Record<string, string>;
   const contentType = request.headers.get('content-type') || '';
-
-  if (contentType.includes('application/x-www-form-urlencoded')) {
-    const formData = await request.formData();
-    body = Object.fromEntries(formData.entries()) as Record<string, string>;
-  } else {
-    body = await request.json();
+  try {
+    if (contentType.includes('application/x-www-form-urlencoded')) {
+      const formData = await request.formData();
+      body = Object.fromEntries(formData.entries()) as Record<string, string>;
+    } else {
+      body = await request.json();
+    }
+  } catch {
+    return identityErrorResponse('Invalid request payload', 'invalid_request', 400);
   }
 
   const grantType = body.grant_type;
+  const clientIdentifier = getClientIdentifier(request);
+  if (!clientIdentifier) {
+    return identityErrorResponse('Client IP is required', 'invalid_request', 403);
+  }
 
   if (grantType === 'password') {
     // Login with password
     const email = body.username?.toLowerCase();
     const passwordHash = body.password;
+    const twoFactorToken = body.twoFactorToken;
+    const twoFactorProvider = body.twoFactorProvider;
+    const twoFactorRemember = body.twoFactorRemember;
+    const loginIdentifier = clientIdentifier;
+    const deviceInfo = readAuthRequestDeviceInfo(body, request);
 
     if (!email || !passwordHash) {
       // Bitwarden clients expect OAuth-style error fields.
       return identityErrorResponse('Email and password are required', 'invalid_request', 400);
     }
 
-    const user = await storage.getUser(email);
-    if (!user) {
-      return identityErrorResponse('Username or password is incorrect. Try again', 'invalid_grant', 400);
-    }
-
-    // Check if login is rate limited (only after confirming user exists)
-    const loginCheck = await rateLimit.checkLoginAttempt(email);
+    // Check login lockout before user lookup to reduce user-enumeration signal
+    const loginCheck = await rateLimit.checkLoginAttempt(loginIdentifier);
     if (!loginCheck.allowed) {
       return identityErrorResponse(
         `Too many failed login attempts. Try again in ${Math.ceil(loginCheck.retryAfterSeconds! / 60)} minutes.`,
@@ -47,116 +249,576 @@ export async function handleToken(request: Request, env: Env): Promise<Response>
       );
     }
 
-    const valid = await auth.verifyPassword(passwordHash, user.masterPasswordHash);
+    const user = await storage.getUser(email);
+    if (!user) {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      return identityErrorResponse('Username or password is incorrect. Try again', 'invalid_grant', 400);
+    }
+    if (user.status !== 'active') {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      await safeWriteAuditEvent(env, {
+        actorUserId: user.id,
+        action: 'auth.login.failed.user_inactive',
+        category: 'auth',
+        level: 'warn',
+        targetType: 'user',
+        targetId: user.id,
+        metadata: {
+          grantType,
+          deviceIdentifier: deviceInfo.deviceIdentifier,
+          ...auditRequestMetadata(request),
+        },
+      });
+      return identityErrorResponse('Account is disabled', 'invalid_grant', 400);
+    }
+
+    const valid = await auth.verifyPassword(passwordHash, user.masterPasswordHash, user.email);
     if (!valid) {
-      // Record failed login attempt
-      const result = await rateLimit.recordFailedLogin(email);
-      if (result.locked) {
-        return identityErrorResponse(
-          `Too many failed login attempts. Account locked for ${Math.ceil(result.retryAfterSeconds! / 60)} minutes.`,
-          'TooManyRequests',
-          429
+      await safeWriteAuditEvent(env, {
+        actorUserId: user.id,
+        action: 'auth.login.failed.bad_password',
+        category: 'auth',
+        level: 'warn',
+        targetType: 'user',
+        targetId: user.id,
+        metadata: {
+          grantType,
+          deviceIdentifier: deviceInfo.deviceIdentifier,
+          ...auditRequestMetadata(request),
+        },
+      });
+      return recordFailedLoginAndBuildResponse(
+        rateLimit,
+        loginIdentifier,
+        'Username or password is incorrect. Try again'
+      );
+    }
+
+    // Optional 2FA: enabled only by per-user secret.
+    let trustedTwoFactorTokenToReturn: string | undefined;
+    const effectiveTotpSecret = resolveTotpSecret(user.totpSecret);
+    if (effectiveTotpSecret) {
+      const canUseRecoveryCode = !!user.totpRecoveryCode;
+      const normalizedTwoFactorProvider = String(twoFactorProvider ?? '').trim();
+      const normalizedTwoFactorToken = String(twoFactorToken ?? '').trim();
+      let rememberRequested = ['1', 'true', 'True', 'TRUE', 'on', 'yes', 'Yes', 'YES'].includes(String(twoFactorRemember || '').trim());
+      const hasProvider = normalizedTwoFactorProvider.length > 0;
+      const hasToken = normalizedTwoFactorToken.length > 0;
+
+      // Upstream-compatible behavior: if 2FA is required and either provider or token is missing,
+      // respond with a 2FA challenge payload.
+      if (!hasProvider || !hasToken) {
+        return twoFactorRequiredResponse('Two factor required.', canUseRecoveryCode);
+      }
+
+      let passedByRememberToken = false;
+      if (normalizedTwoFactorProvider === String(TWO_FACTOR_PROVIDER_REMEMBER)) {
+        if (deviceInfo.deviceIdentifier) {
+          const trustedUserId = await storage.getTrustedTwoFactorDeviceTokenUserId(
+            normalizedTwoFactorToken,
+            deviceInfo.deviceIdentifier
+          );
+          passedByRememberToken = trustedUserId === user.id;
+        }
+
+        // Remember token missing/invalid/expired should re-enter the 2FA challenge flow.
+        if (!passedByRememberToken) {
+          return twoFactorRequiredResponse('Two factor required.', canUseRecoveryCode);
+        }
+      } else if (normalizedTwoFactorProvider === String(TWO_FACTOR_PROVIDER_AUTHENTICATOR)) {
+        const totpOk = await verifyTotpToken(effectiveTotpSecret, normalizedTwoFactorToken);
+        if (!totpOk) {
+          return recordFailedTwoFactorAndBuildResponse(rateLimit, loginIdentifier);
+        }
+      } else if (
+        normalizedTwoFactorProvider === TWO_FACTOR_PROVIDER_RECOVERY_CODE_RESPONSE ||
+        normalizedTwoFactorProvider === String(TWO_FACTOR_PROVIDER_RECOVERY_CODE_LEGACY) ||
+        normalizedTwoFactorProvider === String(TWO_FACTOR_PROVIDER_RECOVERY_CODE_ANDROID_REQUEST)
+      ) {
+        if (!recoveryCodeEquals(normalizedTwoFactorToken, user.totpRecoveryCode)) {
+          return recordFailedTwoFactorAndBuildResponse(rateLimit, loginIdentifier);
+        }
+        user.totpSecret = null;
+        user.totpRecoveryCode = createRecoveryCode();
+        user.updatedAt = new Date().toISOString();
+        await storage.saveUser(user);
+        await storage.deleteRefreshTokensByUserId(user.id);
+        rememberRequested = false;
+      } else {
+        // Unsupported provider for this server profile behaves as an invalid 2FA attempt.
+        return recordFailedTwoFactorAndBuildResponse(rateLimit, loginIdentifier);
+      }
+
+      // Upstream behavior: do not issue a new remember token when auth itself used remember provider.
+      if (rememberRequested && !passedByRememberToken && deviceInfo.deviceIdentifier) {
+        trustedTwoFactorTokenToReturn = createRefreshToken();
+        await storage.saveTrustedTwoFactorDeviceToken(
+          trustedTwoFactorTokenToReturn,
+          user.id,
+          deviceInfo.deviceIdentifier,
+          Date.now() + TWO_FACTOR_REMEMBER_TTL_MS
         );
       }
-      return identityErrorResponse('Username or password is incorrect. Try again', 'invalid_grant', 400);
+    }
+
+    // Persist device only after successful password + (optional) 2FA verification.
+    const deviceSession = await resolveDeviceSession(storage, user.id, deviceInfo);
+    if (deviceSession) {
+      await storage.upsertDevice(
+        user.id,
+        deviceSession.identifier,
+        deviceInfo.deviceName,
+        deviceInfo.deviceType,
+        deviceSession.sessionStamp
+      );
     }
 
     // Successful login - clear failed attempts
-    await rateLimit.clearLoginAttempts(email);
+    await rateLimit.clearLoginAttempts(loginIdentifier);
 
-    const accessToken = await auth.generateAccessToken(user);
-    const refreshToken = await auth.generateRefreshToken(user.id);
+    const accessToken = await auth.generateAccessToken(user, deviceSession);
+    const refreshToken = await auth.generateRefreshToken(user.id, deviceSession);
+    const accountKeys = buildAccountKeys(user);
+    const userDecryptionOptions = buildUserDecryptionOptions(user);
+    await safeWriteAuditEvent(env, {
+      actorUserId: user.id,
+      action: 'auth.login.success',
+      category: 'auth',
+      level: 'info',
+      targetType: 'user',
+      targetId: user.id,
+      metadata: {
+        grantType,
+        webSession: shouldUseWebSession(request),
+        deviceIdentifier: deviceSession?.identifier ?? deviceInfo.deviceIdentifier,
+        deviceType: deviceInfo.deviceType,
+        ...auditRequestMetadata(request),
+      },
+    });
 
     const response: TokenResponse = {
       access_token: accessToken,
-      expires_in: 7200,
+      expires_in: LIMITS.auth.accessTokenTtlSeconds,
       token_type: 'Bearer',
-      refresh_token: refreshToken,
+      ...(shouldUseWebSession(request) ? { web_session: true } : { refresh_token: refreshToken }),
+      ...(trustedTwoFactorTokenToReturn ? { TwoFactorToken: trustedTwoFactorTokenToReturn } : {}),
       Key: user.key,
       PrivateKey: user.privateKey,
+      AccountKeys: accountKeys,
+      accountKeys: accountKeys,
       Kdf: user.kdfType,
       KdfIterations: user.kdfIterations,
       KdfMemory: user.kdfMemory,
       KdfParallelism: user.kdfParallelism,
       ForcePasswordReset: false,
       ResetMasterPassword: false,
+      MasterPasswordPolicy: {
+        Object: 'masterPasswordPolicy',
+      },
+      ApiUseKeyConnector: false,
       scope: 'api offline_access',
       unofficialServer: true,
-      UserDecryptionOptions: {
-        HasMasterPassword: true,
-        Object: 'userDecryptionOptions',
-        MasterPasswordUnlock: {
-          Kdf: {
-            KdfType: user.kdfType,
-            Iterations: user.kdfIterations,
-            Memory: user.kdfMemory || null,
-            Parallelism: user.kdfParallelism || null,
-          },
-          MasterKeyEncryptedUserKey: user.key,
-          MasterKeyWrappedUserKey: user.key,
-          Salt: email, // email is already lowercased above
-          Object: 'masterPasswordUnlock',
-        },
-      },
+      UserDecryptionOptions: userDecryptionOptions,
+      userDecryptionOptions: userDecryptionOptions,
     };
 
-    return jsonResponse(response);
+    const baseResponse = jsonResponse(response);
+    return shouldUseWebSession(request)
+      ? withWebRefreshCookie(request, baseResponse, refreshToken)
+      : baseResponse;
 
+  } else if (grantType === 'webauthn') {
+    const loginIdentifier = clientIdentifier;
+    const loginCheck = await rateLimit.checkLoginAttempt(loginIdentifier);
+    if (!loginCheck.allowed) {
+      return identityErrorResponse(
+        `Too many failed login attempts. Try again in ${Math.ceil(loginCheck.retryAfterSeconds! / 60)} minutes.`,
+        'TooManyRequests',
+        429
+      );
+    }
+
+    const token = String(body.token || '').trim();
+    let deviceResponse: unknown = body.deviceResponse;
+    if (typeof deviceResponse === 'string') {
+      try {
+        deviceResponse = JSON.parse(deviceResponse);
+      } catch {
+        return identityErrorResponse('Invalid passkey response', 'invalid_request', 400);
+      }
+    }
+    if (!token || !deviceResponse) {
+      return identityErrorResponse('Passkey token and deviceResponse are required', 'invalid_request', 400);
+    }
+
+    let asserted: Awaited<ReturnType<typeof assertAccountPasskeyCredential>>;
+    try {
+      asserted = await assertAccountPasskeyCredential(request, env, storage, {
+        token,
+        deviceResponse,
+        scope: 'Authentication',
+      });
+    } catch (error) {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      await safeWriteAuditEvent(env, {
+        actorUserId: null,
+        action: 'auth.passkey.login.failed',
+        category: 'auth',
+        level: 'warn',
+        targetType: 'accountPasskey',
+        targetId: null,
+        metadata: {
+          grantType,
+          reason: error instanceof Error ? error.message : 'assertion_failed',
+          ...auditRequestMetadata(request),
+        },
+      });
+      return identityErrorResponse('Passkey is invalid. Try again', 'invalid_grant', 400);
+    }
+
+    const { user, credential } = asserted;
+    if (user.status !== 'active') {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      return identityErrorResponse('Account is disabled', 'invalid_grant', 400);
+    }
+
+    const deviceInfo = readAuthRequestDeviceInfo(body, request);
+    const deviceSession = await resolveDeviceSession(storage, user.id, deviceInfo);
+    if (deviceSession) {
+      await storage.upsertDevice(
+        user.id,
+        deviceSession.identifier,
+        deviceInfo.deviceName,
+        deviceInfo.deviceType,
+        deviceSession.sessionStamp
+      );
+    }
+
+    await rateLimit.clearLoginAttempts(loginIdentifier);
+
+    const accessToken = await auth.generateAccessToken(user, deviceSession);
+    const refreshToken = await auth.generateRefreshToken(user.id, deviceSession);
+    const accountKeys = buildAccountKeys(user);
+    const webAuthnPrfOption = buildAccountPasskeyTokenUserDecryptionOption(credential);
+    const userDecryptionOptions = buildUserDecryptionOptions(user, webAuthnPrfOption);
+    await safeWriteAuditEvent(env, {
+      actorUserId: user.id,
+      action: 'auth.passkey.login.success',
+      category: 'auth',
+      level: 'info',
+      targetType: 'accountPasskey',
+      targetId: credential.id,
+      metadata: {
+        grantType,
+        webSession: shouldUseWebSession(request),
+        deviceIdentifier: deviceSession?.identifier ?? deviceInfo.deviceIdentifier,
+        deviceType: deviceInfo.deviceType,
+        ...auditRequestMetadata(request),
+      },
+    });
+
+    const response: TokenResponse = {
+      access_token: accessToken,
+      expires_in: LIMITS.auth.accessTokenTtlSeconds,
+      token_type: 'Bearer',
+      ...(shouldUseWebSession(request) ? { web_session: true } : { refresh_token: refreshToken }),
+      Key: user.key,
+      PrivateKey: user.privateKey,
+      AccountKeys: accountKeys,
+      accountKeys: accountKeys,
+      Kdf: user.kdfType,
+      KdfIterations: user.kdfIterations,
+      KdfMemory: user.kdfMemory,
+      KdfParallelism: user.kdfParallelism,
+      ForcePasswordReset: false,
+      ResetMasterPassword: false,
+      MasterPasswordPolicy: {
+        Object: 'masterPasswordPolicy',
+      },
+      ApiUseKeyConnector: false,
+      scope: 'api offline_access',
+      unofficialServer: true,
+      UserDecryptionOptions: userDecryptionOptions,
+      userDecryptionOptions: userDecryptionOptions,
+    };
+
+    const baseResponse = jsonResponse(response);
+    return shouldUseWebSession(request)
+      ? withWebRefreshCookie(request, baseResponse, refreshToken)
+      : baseResponse;
+
+  } else if (grantType === 'client_credentials') {
+    // Login with client credentials
+    const clientId = body.client_id;
+    const clientSecret = body.client_secret;
+    const scope = body.scope;
+    const deviceInfo = readAuthRequestDeviceInfo(body, request);
+
+    const loginIdentifier = clientIdentifier;
+    const parmValid = checkClientCredentialsParam(clientId, clientSecret, scope);
+    if (!parmValid) {
+      return identityErrorResponse('Parameter error', 'invalid_request', 400);
+    }
+
+    // Check login lockout before user lookup to reduce user-enumeration signal
+    const loginCheck = await rateLimit.checkLoginAttempt(loginIdentifier);
+    if (!loginCheck.allowed) {
+      return identityErrorResponse(
+        `Too many failed login attempts. Try again in ${Math.ceil(loginCheck.retryAfterSeconds! / 60)} minutes.`,
+        'TooManyRequests',
+        429
+      );
+    }
+
+    const uid = clientId.slice(5);
+    const user = await storage.getUserById(uid);
+    if (!user) {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      return identityErrorResponse('ClientId or clientSecret is incorrect. Try again', 'invalid_grant', 400);
+    }
+    if (user.status !== 'active') {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      await safeWriteAuditEvent(env, {
+        actorUserId: user.id,
+        action: 'auth.login.failed.user_inactive',
+        category: 'auth',
+        level: 'warn',
+        targetType: 'user',
+        targetId: user.id,
+        metadata: {
+          grantType,
+          deviceIdentifier: deviceInfo.deviceIdentifier,
+          ...auditRequestMetadata(request),
+        },
+      });
+      return identityErrorResponse('Account is disabled', 'invalid_grant', 400);
+    }
+
+    if (!user.apiKey || !constantTimeEquals(clientSecret, user.apiKey)) {
+      await rateLimit.recordFailedLogin(loginIdentifier);
+      await safeWriteAuditEvent(env, {
+        actorUserId: user.id,
+        action: 'auth.login.failed.bad_api_key',
+        category: 'auth',
+        level: 'warn',
+        targetType: 'user',
+        targetId: user.id,
+        metadata: {
+          grantType,
+          deviceIdentifier: deviceInfo.deviceIdentifier,
+          ...auditRequestMetadata(request),
+        },
+      });
+      return identityErrorResponse('ClientId or clientSecret is incorrect. Try again', 'invalid_grant', 400);
+    }
+
+    // Persist device only after successful client credential verification.
+    const deviceSession = await resolveDeviceSession(storage, user.id, deviceInfo);
+    if (deviceSession) {
+      await storage.upsertDevice(
+        user.id,
+        deviceSession.identifier,
+        deviceInfo.deviceName,
+        deviceInfo.deviceType,
+        deviceSession.sessionStamp
+      );
+    }
+
+    // Successful login - clear failed attempts
+    await rateLimit.clearLoginAttempts(loginIdentifier);
+
+    const accessToken = await auth.generateAccessToken(user, deviceSession);
+    const refreshToken = await auth.generateRefreshToken(user.id, deviceSession);
+    const accountKeys = buildAccountKeys(user);
+    const userDecryptionOptions = buildUserDecryptionOptions(user);
+    await safeWriteAuditEvent(env, {
+      actorUserId: user.id,
+      action: 'auth.login.success',
+      category: 'auth',
+      level: 'info',
+      targetType: 'user',
+      targetId: user.id,
+      metadata: {
+        grantType,
+        webSession: shouldUseWebSession(request),
+        deviceIdentifier: deviceSession?.identifier ?? deviceInfo.deviceIdentifier,
+        deviceType: deviceInfo.deviceType,
+        ...auditRequestMetadata(request),
+      },
+    });
+
+    const response: TokenResponse = {
+      access_token: accessToken,
+      expires_in: LIMITS.auth.accessTokenTtlSeconds,
+      token_type: 'Bearer',
+      ...(shouldUseWebSession(request) ? { web_session: true } : { refresh_token: refreshToken }),
+      Key: user.key,
+      PrivateKey: user.privateKey,
+      AccountKeys: accountKeys,
+      accountKeys: accountKeys,
+      Kdf: user.kdfType,
+      KdfIterations: user.kdfIterations,
+      KdfMemory: user.kdfMemory,
+      KdfParallelism: user.kdfParallelism,
+      ForcePasswordReset: false,
+      ResetMasterPassword: false,
+      MasterPasswordPolicy: {
+        Object: 'masterPasswordPolicy',
+      },
+      ApiUseKeyConnector: false,
+      scope: 'api offline_access',
+      unofficialServer: true,
+      UserDecryptionOptions: userDecryptionOptions,
+      userDecryptionOptions: userDecryptionOptions,
+    };
+
+    const baseResponse = jsonResponse(response);
+    return shouldUseWebSession(request)
+      ? withWebRefreshCookie(request, baseResponse, refreshToken)
+      : baseResponse;
+
+  } else if (grantType === 'send_access') {
+    const sendAccessLimit = await rateLimit.consumeBudget(`${clientIdentifier}:public`, LIMITS.rateLimit.publicRequestsPerMinute);
+    if (!sendAccessLimit.allowed) {
+      return identityErrorResponse(
+        `Rate limit exceeded. Try again in ${sendAccessLimit.retryAfterSeconds} seconds.`,
+        'TooManyRequests',
+        429
+      );
+    }
+
+    const sendId = String(body.send_id || body.sendId || '').trim();
+    if (!sendId) {
+      return jsonResponse(
+        {
+          error: 'invalid_request',
+          error_description: 'send_id is required',
+          send_access_error_type: 'invalid_send_id',
+          ErrorModel: {
+            Message: 'send_id is required',
+            Object: 'error',
+          },
+        },
+        400
+      );
+    }
+
+    const passwordHashB64 = String(
+      body.password_hash_b64 || body.passwordHashB64 || body.passwordHash || body.password_hash || ''
+    ).trim() || null;
+    const password = String(body.password || '').trim() || null;
+
+    const result = await issueSendAccessToken(
+      env,
+      sendId,
+      passwordHashB64,
+      password,
+      rateLimit,
+      `${clientIdentifier}:send-password`
+    );
+    if ('error' in result) {
+      return result.error;
+    }
+
+    return jsonResponse({
+      access_token: result.token,
+      expires_in: LIMITS.auth.sendAccessTokenTtlSeconds,
+      token_type: 'Bearer',
+      scope: 'api.send',
+      unofficialServer: true,
+    });
   } else if (grantType === 'refresh_token') {
+    const refreshLimit = await rateLimit.consumeBudget(
+      `${clientIdentifier}:identity-refresh`,
+      LIMITS.rateLimit.refreshTokenRequestsPerMinute
+    );
+    if (!refreshLimit.allowed) {
+      return identityErrorResponse(
+        `Rate limit exceeded. Try again in ${refreshLimit.retryAfterSeconds} seconds.`,
+        'TooManyRequests',
+        429
+      );
+    }
+
     // Refresh token
-    const refreshToken = body.refresh_token;
+    const refreshToken = String(body.refresh_token || '').trim() || (
+      shouldUseWebSession(request)
+        ? parseCookieValue(request, WEB_REFRESH_COOKIE)
+        : null
+    );
     if (!refreshToken) {
-      return errorResponse('Refresh token is required', 400);
+      return identityErrorResponse('Refresh token is required', 'invalid_request', 400);
     }
 
-    const result = await auth.refreshAccessToken(refreshToken);
-    if (!result) {
-      return errorResponse('Invalid refresh token', 401);
+    const result = await auth.refreshAccessTokenDetailed(refreshToken);
+    if (!result.ok) {
+      await safeWriteAuditEvent(env, {
+        actorUserId: result.userId ?? null,
+        action: `auth.refresh.failed.${result.reason}`,
+        category: 'auth',
+        level: 'warn',
+        targetType: result.deviceIdentifier ? 'device' : 'refreshToken',
+        targetId: result.deviceIdentifier ?? null,
+        metadata: {
+          grantType,
+          reason: result.reason,
+          webSession: shouldUseWebSession(request),
+          ...auditRequestMetadata(request),
+        },
+      });
+      const invalidResponse = identityErrorResponse('Invalid refresh token', 'invalid_grant', 400);
+      return shouldUseWebSession(request)
+        ? withWebRefreshCookie(request, invalidResponse, null)
+        : invalidResponse;
     }
 
-    // Revoke old refresh token (prevent reuse)
-    await storage.deleteRefreshToken(refreshToken);
+    // Keep a short overlap window for old refresh token to absorb
+    // concurrent refresh requests from multiple client contexts.
+    await storage.constrainRefreshTokenExpiry(
+      refreshToken,
+      Date.now() + LIMITS.auth.refreshTokenOverlapGraceMs
+    );
 
-    const { accessToken, user } = result;
-    const newRefreshToken = await auth.generateRefreshToken(user.id);
+    const { accessToken, user, device } = result;
+    if (device?.identifier) {
+      await storage.touchDeviceLastSeen(user.id, device.identifier);
+    }
+    const newRefreshToken = await auth.generateRefreshToken(user.id, device);
+    const accountKeys = buildAccountKeys(user);
+    const userDecryptionOptions = buildUserDecryptionOptions(user);
 
     const response: TokenResponse = {
       access_token: accessToken,
-      expires_in: 7200,
+      expires_in: LIMITS.auth.accessTokenTtlSeconds,
       token_type: 'Bearer',
-      refresh_token: newRefreshToken,
+      ...(shouldUseWebSession(request) ? { web_session: true } : { refresh_token: newRefreshToken }),
       Key: user.key,
       PrivateKey: user.privateKey,
+      AccountKeys: accountKeys,
+      accountKeys: accountKeys,
       Kdf: user.kdfType,
       KdfIterations: user.kdfIterations,
       KdfMemory: user.kdfMemory,
       KdfParallelism: user.kdfParallelism,
       ForcePasswordReset: false,
       ResetMasterPassword: false,
+      MasterPasswordPolicy: {
+        Object: 'masterPasswordPolicy',
+      },
+      ApiUseKeyConnector: false,
       scope: 'api offline_access',
       unofficialServer: true,
-      UserDecryptionOptions: {
-        HasMasterPassword: true,
-        Object: 'userDecryptionOptions',
-        MasterPasswordUnlock: {
-          Kdf: {
-            KdfType: user.kdfType,
-            Iterations: user.kdfIterations,
-            Memory: user.kdfMemory || null,
-            Parallelism: user.kdfParallelism || null,
-          },
-          MasterKeyEncryptedUserKey: user.key,
-          MasterKeyWrappedUserKey: user.key,
-          Salt: user.email.toLowerCase(),
-          Object: 'masterPasswordUnlock',
-        },
-      },
+      UserDecryptionOptions: userDecryptionOptions,
+      userDecryptionOptions: userDecryptionOptions,
     };
 
-    return jsonResponse(response);
+    const baseResponse = jsonResponse(response);
+    return shouldUseWebSession(request)
+      ? withWebRefreshCookie(request, baseResponse, newRefreshToken)
+      : baseResponse;
   }
 
-  return errorResponse('Unsupported grant type', 400);
+  return identityErrorResponse('Unsupported grant type', 'unsupported_grant_type', 400);
 }
 
 // POST /identity/accounts/prelogin
@@ -179,14 +841,58 @@ export async function handlePrelogin(request: Request, env: Env): Promise<Respon
 
   // Return default KDF settings even if user doesn't exist (to prevent user enumeration)
   const kdfType = user?.kdfType ?? 0;
-  const kdfIterations = user?.kdfIterations ?? 600000;
-  const kdfMemory = user?.kdfMemory;
-  const kdfParallelism = user?.kdfParallelism;
+  const kdfIterations = user?.kdfIterations ?? LIMITS.auth.defaultKdfIterations;
+  // Use ?? null so non-existent users return null (not undefined/omitted) for these fields,
+  // matching the response shape of real PBKDF2 users and reducing enumeration signal.
+  const kdfMemory = user?.kdfMemory ?? null;
+  const kdfParallelism = user?.kdfParallelism ?? null;
 
-  return jsonResponse({
-    kdf: kdfType,
-    kdfIterations: kdfIterations,
-    kdfMemory: kdfMemory,
-    kdfParallelism: kdfParallelism,
-  });
+  return jsonResponse(buildPreloginResponse(email, kdfType, kdfIterations, kdfMemory, kdfParallelism));
+}
+
+// POST /identity/connect/revocation
+// Best-effort OAuth token revocation endpoint.
+// RFC 7009 allows returning 200 even if token is unknown.
+export async function handleRevocation(request: Request, env: Env): Promise<Response> {
+  const storage = new StorageService(env.DB);
+
+  let body: Record<string, string>;
+  const contentType = request.headers.get('content-type') || '';
+  try {
+    if (contentType.includes('application/x-www-form-urlencoded')) {
+      const formData = await request.formData();
+      body = Object.fromEntries(formData.entries()) as Record<string, string>;
+    } else {
+      body = await request.json();
+    }
+  } catch {
+    return new Response(null, { status: 200 });
+  }
+
+  const token = String(body.token || '').trim() || (
+    shouldUseWebSession(request)
+      ? (parseCookieValue(request, WEB_REFRESH_COOKIE) || '')
+      : ''
+  );
+  if (token) {
+    await storage.deleteRefreshToken(token);
+  }
+
+  const baseResponse = new Response(null, { status: 200 });
+  return shouldUseWebSession(request)
+    ? withWebRefreshCookie(request, baseResponse, null)
+    : baseResponse;
+}
+
+export function checkClientCredentialsParam(clientId: string, clientSecret: string, scope: string): boolean {
+  if (scope !== 'api') {
+    return false;
+  }
+  if (!clientId.startsWith('user.')) {
+    return false;
+  }
+  if (!clientSecret) {
+    return false;
+  }
+  return true;
 }

src/handlers/import.ts

@@ -1,21 +1,32 @@
 import { Env, Cipher, Folder, CipherType } from '../types';
+import { notifyUserVaultSync } from '../durable/notifications-hub';
 import { StorageService } from '../services/storage';
-import { errorResponse } from '../utils/response';
+import { errorResponse, jsonResponse } from '../utils/response';
+import { readActingDeviceIdentifier } from '../utils/device';
 import { generateUUID } from '../utils/uuid';
+import { LIMITS } from '../config/limits';
+import { normalizeCipherLoginForStorage, normalizeCipherSshKeyForCompatibility } from './ciphers';
 
 // Bitwarden client import request format
 interface CiphersImportRequest {
   ciphers: Array<{
+    id?: string | null;
     type: number;
-    name: string;
+    name?: string | null;
     notes?: string | null;
     favorite?: boolean;
     reprompt?: number;
+    sshKey?: any | null;
+    key?: string | null;
     login?: {
-      uris?: Array<{ uri: string | null; match?: number | null }> | null;
+      uris?: Array<{ uri: string | null; uriChecksum?: string | null; match?: number | null }> | null;
       username?: string | null;
       password?: string | null;
       totp?: string | null;
+      autofillOnPageLoad?: boolean | null;
+      uri?: string | null;
+      passwordRevisionDate?: string | null;
+      [key: string]: any;
     } | null;
     card?: {
       cardholderName?: string | null;
@@ -56,6 +67,7 @@ interface CiphersImportRequest {
       password: string;
       lastUsedDate: string;
     }> | null;
+    [key: string]: any;
   }>;
   folders: Array<{
     name: string;
@@ -66,9 +78,32 @@ interface CiphersImportRequest {
   }>;
 }
 
+function bindNull(v: any): any {
+  return v === undefined ? null : v;
+}
+
+function readAliasedImportProp<T = unknown>(source: any, aliases: string[]): T | undefined {
+  if (!source || typeof source !== 'object') return undefined;
+  for (const key of aliases) {
+    if (Object.prototype.hasOwnProperty.call(source, key)) {
+      return source[key] as T;
+    }
+  }
+  return undefined;
+}
+
+async function runBatchInChunks(db: D1Database, statements: D1PreparedStatement[], chunkSize: number): Promise<void> {
+  for (let i = 0; i < statements.length; i += chunkSize) {
+    const chunk = statements.slice(i, i + chunkSize);
+    await db.batch(chunk);
+  }
+}
+
 // POST /api/ciphers/import - Bitwarden client import endpoint
 export async function handleCiphersImport(request: Request, env: Env, userId: string): Promise<Response> {
   const storage = new StorageService(env.DB);
+  const url = new URL(request.url);
+  const returnCipherMap = url.searchParams.get('returnCipherMap') === '1';
 
   let importData: CiphersImportRequest;
   try {
@@ -81,10 +116,16 @@ export async function handleCiphersImport(request: Request, env: Env, userId: st
   const ciphers = importData.ciphers || [];
   const folderRelationships = importData.folderRelationships || [];
 
+  if (folders.length + ciphers.length > LIMITS.performance.importItemLimit) {
+    return errorResponse(`Import exceeds maximum of ${LIMITS.performance.importItemLimit} items`, 400);
+  }
+
   const now = new Date().toISOString();
+  const batchChunkSize = LIMITS.performance.bulkMoveChunkSize;
 
   // Create folders and build index -> id mapping
   const folderIdMap = new Map<number, string>();
+  const folderRows: Folder[] = [];
   
   for (let i = 0; i < folders.length; i++) {
     const folderId = generateUUID();
@@ -98,7 +139,19 @@ export async function handleCiphersImport(request: Request, env: Env, userId: st
       updatedAt: now,
     };
 
-    await storage.saveFolder(folder);
+    folderRows.push(folder);
+  }
+
+  if (folderRows.length > 0) {
+    const folderStatements = folderRows.map(folder =>
+      env.DB
+        .prepare(
+          'INSERT INTO folders(id, user_id, name, created_at, updated_at) VALUES(?, ?, ?, ?, ?) ' +
+          'ON CONFLICT(id) DO UPDATE SET user_id=excluded.user_id, name=excluded.name, updated_at=excluded.updated_at'
+        )
+        .bind(folder.id, folder.userId, folder.name, folder.createdAt, folder.updatedAt)
+    );
+    await runBatchInChunks(env.DB, folderStatements, batchChunkSize);
   }
 
   // Build cipher index -> folder id mapping from relationships
@@ -111,81 +164,139 @@ export async function handleCiphersImport(request: Request, env: Env, userId: st
   }
 
   // Create ciphers
+  const cipherRows: Cipher[] = [];
+  const cipherMapRows: Array<{ index: number; sourceId: string | null; id: string }> = [];
   for (let i = 0; i < ciphers.length; i++) {
     const c = ciphers[i];
-    const folderId = cipherFolderMap.get(i) || null;
+    const folderId = cipherFolderMap.get(i) || readAliasedImportProp<string | null>(c, ['folderId', 'FolderId']) || null;
+    const sourceIdRaw = String(c?.id ?? '').trim();
+    const sourceId = sourceIdRaw || null;
+    const login = readAliasedImportProp<any | null>(c, ['login', 'Login']);
+    const card = readAliasedImportProp<any | null>(c, ['card', 'Card']);
+    const identity = readAliasedImportProp<any | null>(c, ['identity', 'Identity']);
+    const secureNote = readAliasedImportProp<any | null>(c, ['secureNote', 'SecureNote']);
+    const fields = readAliasedImportProp<any[] | null>(c, ['fields', 'Fields']);
+    const passwordHistory = readAliasedImportProp<any[] | null>(c, ['passwordHistory', 'PasswordHistory']);
+    const key = readAliasedImportProp<string | null>(c, ['key', 'Key']);
 
     const cipher: Cipher = {
+      ...c,
       id: generateUUID(),
       userId: userId,
       type: c.type as CipherType,
       folderId: folderId,
-      name: c.name || 'Untitled',
-      notes: c.notes || null,
-      favorite: c.favorite || false,
-      login: c.login ? {
-        username: c.login.username || null,
-        password: c.login.password || null,
-        uris: c.login.uris?.map(u => ({
-          uri: u.uri || null,
-          uriChecksum: null,
+      name: c.name ?? 'Untitled',
+      notes: c.notes ?? null,
+      favorite: c.favorite ?? false,
+      login: login ? {
+        ...login,
+        username: login.username ?? null,
+        password: login.password ?? null,
+        uris: login.uris?.map((u: any) => ({
+          ...u,
+          uri: u.uri ?? null,
+          uriChecksum: u.uriChecksum ?? null,
           match: u.match ?? null,
         })) || null,
-        totp: c.login.totp || null,
-        autofillOnPageLoad: null,
-        fido2Credentials: null,
-        uri: null,
-        passwordRevisionDate: null,
+        totp: login.totp ?? null,
+        autofillOnPageLoad: login.autofillOnPageLoad ?? null,
+        fido2Credentials: Array.isArray(login.fido2Credentials) ? login.fido2Credentials : null,
+        uri: login.uri ?? null,
+        passwordRevisionDate: login.passwordRevisionDate ?? null,
       } : null,
-      card: c.card ? {
-        cardholderName: c.card.cardholderName || null,
-        brand: c.card.brand || null,
-        number: c.card.number || null,
-        expMonth: c.card.expMonth || null,
-        expYear: c.card.expYear || null,
-        code: c.card.code || null,
+      card: card ? {
+        ...card,
+        cardholderName: card.cardholderName ?? null,
+        brand: card.brand ?? null,
+        number: card.number ?? null,
+        expMonth: card.expMonth ?? null,
+        expYear: card.expYear ?? null,
+        code: card.code ?? null,
       } : null,
-      identity: c.identity ? {
-        title: c.identity.title || null,
-        firstName: c.identity.firstName || null,
-        middleName: c.identity.middleName || null,
-        lastName: c.identity.lastName || null,
-        address1: c.identity.address1 || null,
-        address2: c.identity.address2 || null,
-        address3: c.identity.address3 || null,
-        city: c.identity.city || null,
-        state: c.identity.state || null,
-        postalCode: c.identity.postalCode || null,
-        country: c.identity.country || null,
-        company: c.identity.company || null,
-        email: c.identity.email || null,
-        phone: c.identity.phone || null,
-        ssn: c.identity.ssn || null,
-        username: c.identity.username || null,
-        passportNumber: c.identity.passportNumber || null,
-        licenseNumber: c.identity.licenseNumber || null,
+      identity: identity ? {
+        ...identity,
+        title: identity.title ?? null,
+        firstName: identity.firstName ?? null,
+        middleName: identity.middleName ?? null,
+        lastName: identity.lastName ?? null,
+        address1: identity.address1 ?? null,
+        address2: identity.address2 ?? null,
+        address3: identity.address3 ?? null,
+        city: identity.city ?? null,
+        state: identity.state ?? null,
+        postalCode: identity.postalCode ?? null,
+        country: identity.country ?? null,
+        company: identity.company ?? null,
+        email: identity.email ?? null,
+        phone: identity.phone ?? null,
+        ssn: identity.ssn ?? null,
+        username: identity.username ?? null,
+        passportNumber: identity.passportNumber ?? null,
+        licenseNumber: identity.licenseNumber ?? null,
       } : null,
-      secureNote: c.secureNote || null,
-      fields: c.fields?.map(f => ({
-        name: f.name || null,
-        value: f.value || null,
+      secureNote: secureNote ?? null,
+      fields: fields?.map((f: any) => ({
+        ...f,
+        name: f.name ?? null,
+        value: f.value ?? null,
         type: f.type,
         linkedId: f.linkedId ?? null,
       })) || null,
-      passwordHistory: c.passwordHistory || null,
-      reprompt: c.reprompt || 0,
-      sshKey: null,
-      key: null,
+      passwordHistory: passwordHistory ?? null,
+      reprompt: c.reprompt ?? 0,
+      sshKey: normalizeCipherSshKeyForCompatibility((c as any).sshKey ?? null),
+      key: key ?? null,
       createdAt: now,
       updatedAt: now,
+      archivedAt: null,
       deletedAt: null,
     };
+    cipher.login = normalizeCipherLoginForStorage(cipher.login);
 
-    await storage.saveCipher(cipher);
+    cipherRows.push(cipher);
+    cipherMapRows.push({ index: i, sourceId, id: cipher.id });
+  }
+
+  if (cipherRows.length > 0) {
+    const cipherStatements = cipherRows.map(cipher => {
+      const data = JSON.stringify(cipher);
+      return env.DB
+        .prepare(
+          'INSERT INTO ciphers(id, user_id, type, folder_id, name, notes, favorite, data, reprompt, key, created_at, updated_at, archived_at, deleted_at) ' +
+          'VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ' +
+          'ON CONFLICT(id) DO UPDATE SET ' +
+          'user_id=excluded.user_id, type=excluded.type, folder_id=excluded.folder_id, name=excluded.name, notes=excluded.notes, favorite=excluded.favorite, data=excluded.data, reprompt=excluded.reprompt, key=excluded.key, updated_at=excluded.updated_at, archived_at=excluded.archived_at, deleted_at=excluded.deleted_at'
+        )
+        .bind(
+          cipher.id,
+          cipher.userId,
+          Number(cipher.type) || 1,
+          bindNull(cipher.folderId),
+          bindNull(cipher.name),
+          bindNull(cipher.notes),
+          cipher.favorite ? 1 : 0,
+          data,
+          bindNull(cipher.reprompt ?? 0),
+          bindNull(cipher.key),
+          cipher.createdAt,
+          cipher.updatedAt,
+          bindNull(cipher.archivedAt),
+          bindNull(cipher.deletedAt)
+        );
+    });
+    await runBatchInChunks(env.DB, cipherStatements, batchChunkSize);
   }
 
   // Update revision date
-  await storage.updateRevisionDate(userId);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyUserVaultSync(env, userId, revisionDate, readActingDeviceIdentifier(request));
+
+  if (returnCipherMap) {
+    return jsonResponse({
+      object: 'import-result',
+      cipherMap: cipherMapRows,
+    });
+  }
 
   return new Response(null, { status: 200 });
 }

src/handlers/notifications.ts

@@ -0,0 +1,58 @@
+import { AuthService } from '../services/auth';
+import type { Env, JWTPayload } from '../types';
+import { errorResponse, jsonResponse } from '../utils/response';
+import { generateUUID } from '../utils/uuid';
+
+function extractAccessToken(request: Request): string | null {
+  const url = new URL(request.url);
+  const queryToken = String(url.searchParams.get('access_token') || '').trim();
+  if (queryToken) return queryToken;
+
+  const authHeader = String(request.headers.get('Authorization') || '').trim();
+  const match = authHeader.match(/^Bearer\s+(.+)$/i);
+  return match?.[1]?.trim() || null;
+}
+
+async function authenticateNotificationsRequest(request: Request, env: Env): Promise<JWTPayload | null> {
+  const accessToken = extractAccessToken(request);
+  if (!accessToken) return null;
+
+  const auth = new AuthService(env);
+  return auth.verifyAccessToken(`Bearer ${accessToken}`);
+}
+
+export async function handleNotificationsNegotiate(request: Request, env: Env): Promise<Response> {
+  const payload = await authenticateNotificationsRequest(request, env);
+  if (!payload?.sub) return errorResponse('Unauthorized', 401);
+
+  const connectionId = generateUUID();
+  return jsonResponse({
+    connectionId,
+    connectionToken: connectionId,
+    negotiateVersion: 1,
+    availableTransports: [
+      {
+        transport: 'WebSockets',
+        transferFormats: ['Text', 'Binary'],
+      },
+    ],
+  });
+}
+
+export async function handleNotificationsHub(request: Request, env: Env): Promise<Response> {
+  const payload = await authenticateNotificationsRequest(request, env);
+  if (!payload?.sub) return errorResponse('Unauthorized', 401);
+  if (request.headers.get('Upgrade')?.toLowerCase() !== 'websocket') {
+    return errorResponse('Expected websocket', 426);
+  }
+
+  const userId = payload.sub;
+  const id = env.NOTIFICATIONS_HUB.idFromName(userId);
+  const stub = env.NOTIFICATIONS_HUB.get(id);
+  const forwardedUrl = new URL(request.url);
+  forwardedUrl.searchParams.set('nw_uid', userId);
+  if (payload.did) {
+    forwardedUrl.searchParams.set('nw_did', payload.did);
+  }
+  return stub.fetch(new Request(forwardedUrl.toString(), request));
+}

src/handlers/sends-private.ts

@@ -0,0 +1,727 @@
+import { Env, Send, SendAuthType, SendType } from '../types';
+import { StorageService } from '../services/storage';
+import { jsonResponse, errorResponse } from '../utils/response';
+import { buildDirectUploadUrl, getSafeJwtSecret, parseDirectUploadPayload } from '../utils/direct-upload';
+import { generateUUID } from '../utils/uuid';
+import { parsePagination, encodeContinuationToken } from '../utils/pagination';
+import { LIMITS } from '../config/limits';
+import {
+  getBlobStorageMaxBytes,
+  getSendFileObjectKey,
+  putBlobObject,
+  deleteBlobObject,
+} from '../services/blob-store';
+import { createSendFileUploadToken, verifySendFileUploadToken } from '../utils/jwt';
+import {
+  formatSize,
+  getAliasedProp,
+  normalizeEmails,
+  notifyVaultSyncForRequest,
+  parseDate,
+  parseFileLength,
+  parseInteger,
+  parseMaxAccessCount,
+  parseSendAuthType,
+  parseSendType,
+  parseStoredSendData,
+  sanitizeSendData,
+  sendToResponse,
+  setSendPassword,
+  validateDeletionDate,
+} from './sends-shared';
+import { auditRequestMetadata, writeAuditEvent } from '../services/audit-events';
+
+async function writeSendAudit(
+  storage: StorageService,
+  request: Request,
+  userId: string,
+  action: string,
+  metadata: Record<string, unknown>
+): Promise<void> {
+  await writeAuditEvent(storage, {
+    actorUserId: userId,
+    action,
+    category: 'data',
+    level: action.includes('delete') ? 'security' : 'info',
+    targetType: 'send',
+    targetId: typeof metadata.id === 'string' ? metadata.id : null,
+    metadata: {
+      ...metadata,
+      ...auditRequestMetadata(request),
+    },
+  });
+}
+
+async function processSendFileUpload(
+  request: Request,
+  env: Env,
+  send: Send,
+  fileId: string
+): Promise<Response> {
+  const maxFileSize = getBlobStorageMaxBytes(env, LIMITS.send.maxFileSizeBytes);
+  const sendData = parseStoredSendData(send);
+  const expectedFileId = typeof sendData.id === 'string' ? sendData.id : null;
+  if (!expectedFileId || expectedFileId !== fileId) {
+    return errorResponse('Send file does not match send data.', 400);
+  }
+
+  const expectedFileName = typeof sendData.fileName === 'string' ? sendData.fileName : null;
+  const expectedSize = parseInteger(sendData.size);
+  const upload = await parseDirectUploadPayload(request, {
+    expectedSize,
+    expectedFileName,
+    maxFileSize,
+    tooLargeMessage: 'Send storage limit exceeded with this file',
+    sizeMismatchMessage: 'Send file size does not match.',
+    fileNameMismatchMessage: 'Send file name does not match.',
+  });
+  if (upload instanceof Response) {
+    return upload;
+  }
+
+  try {
+    await putBlobObject(env, getSendFileObjectKey(send.id, fileId), upload.body, {
+      size: upload.size,
+      contentType: upload.contentType,
+      customMetadata: {
+        sendId: send.id,
+        fileId,
+      },
+    });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    if (message.includes('KV object too large')) {
+      return errorResponse('Send storage limit exceeded with this file', 413);
+    }
+    return errorResponse('Attachment storage is not configured', 500);
+  }
+
+  const storage = new StorageService(env.DB);
+  const revisionDate = await storage.updateRevisionDate(send.userId);
+  notifyVaultSyncForRequest(request, env, send.userId, revisionDate);
+
+  return new Response(null, { status: 201 });
+}
+
+export async function handleGetSends(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const url = new URL(request.url);
+  const pagination = parsePagination(url);
+
+  let sends: Send[];
+  let continuationToken: string | null = null;
+  if (pagination) {
+    const pageRows = await storage.getSendsPage(userId, pagination.limit + 1, pagination.offset);
+    const hasNext = pageRows.length > pagination.limit;
+    sends = hasNext ? pageRows.slice(0, pagination.limit) : pageRows;
+    continuationToken = hasNext ? encodeContinuationToken(pagination.offset + sends.length) : null;
+  } else {
+    sends = await storage.getAllSends(userId);
+  }
+
+  const sendResponses = sends.map(sendToResponse);
+  return jsonResponse({
+    data: sendResponses,
+    object: 'list',
+    continuationToken,
+  });
+}
+
+export async function handleGetSend(request: Request, env: Env, userId: string, sendId: string): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+
+  return jsonResponse(sendToResponse(send));
+}
+
+export async function handleCreateSend(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+
+  let body: unknown;
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const typeRaw = getAliasedProp(body, ['type', 'Type']);
+  const sendType = parseSendType(typeRaw.value);
+  if (sendType === null) {
+    return errorResponse('Invalid Send type', 400);
+  }
+  if (sendType === SendType.File) {
+    return errorResponse('File sends should use /api/sends/file/v2', 400);
+  }
+
+  const nameRaw = getAliasedProp(body, ['name', 'Name']);
+  const keyRaw = getAliasedProp(body, ['key', 'Key']);
+  const deletionDateRaw = getAliasedProp(body, ['deletionDate', 'DeletionDate']);
+  const textRaw = getAliasedProp(body, ['text', 'Text']);
+
+  if (typeof nameRaw.value !== 'string' || !nameRaw.value.trim()) {
+    return errorResponse('Name is required', 400);
+  }
+  if (typeof keyRaw.value !== 'string' || !keyRaw.value.trim()) {
+    return errorResponse('Key is required', 400);
+  }
+
+  const deletionDate = parseDate(deletionDateRaw.value);
+  if (!deletionDate) {
+    return errorResponse('Invalid deletionDate', 400);
+  }
+
+  const deletionValidation = validateDeletionDate(deletionDate);
+  if (deletionValidation) return deletionValidation;
+
+  const sendData = sanitizeSendData(textRaw.value);
+  if (!sendData) {
+    return errorResponse('Send data not provided', 400);
+  }
+
+  const maxAccessRaw = getAliasedProp(body, ['maxAccessCount', 'MaxAccessCount']);
+  const maxAccess = parseMaxAccessCount(maxAccessRaw.value);
+  if (!maxAccess.ok) return maxAccess.response;
+
+  const expirationRaw = getAliasedProp(body, ['expirationDate', 'ExpirationDate']);
+  const expirationDate = expirationRaw.value === null || expirationRaw.value === undefined
+    ? null
+    : parseDate(expirationRaw.value);
+  if (expirationRaw.value !== null && expirationRaw.value !== undefined && !expirationDate) {
+    return errorResponse('Invalid expirationDate', 400);
+  }
+
+  const disabledRaw = getAliasedProp(body, ['disabled', 'Disabled']);
+  const hideEmailRaw = getAliasedProp(body, ['hideEmail', 'HideEmail']);
+  const notesRaw = getAliasedProp(body, ['notes', 'Notes']);
+  const passwordRaw = getAliasedProp(body, ['password', 'Password']);
+  const authTypeRaw = getAliasedProp(body, ['authType', 'AuthType']);
+  const emailsRaw = getAliasedProp(body, ['emails', 'Emails']);
+
+  const requestedAuthType = parseSendAuthType(authTypeRaw.value);
+  if (authTypeRaw.present && requestedAuthType === null) {
+    return errorResponse('Invalid authType', 400);
+  }
+
+  const normalizedEmails = normalizeEmails(emailsRaw.value);
+  if (emailsRaw.present && emailsRaw.value !== null && normalizedEmails === null) {
+    return errorResponse('Invalid emails', 400);
+  }
+
+  const now = new Date().toISOString();
+  const send: Send = {
+    id: generateUUID(),
+    userId,
+    type: sendType,
+    name: nameRaw.value.trim(),
+    notes: typeof notesRaw.value === 'string' ? notesRaw.value : null,
+    data: JSON.stringify(sendData),
+    key: keyRaw.value,
+    passwordHash: null,
+    passwordSalt: null,
+    passwordIterations: null,
+    authType: requestedAuthType ?? SendAuthType.None,
+    emails: normalizedEmails,
+    maxAccessCount: maxAccess.value,
+    accessCount: 0,
+    disabled: typeof disabledRaw.value === 'boolean' ? disabledRaw.value : false,
+    hideEmail: typeof hideEmailRaw.value === 'boolean' ? hideEmailRaw.value : null,
+    createdAt: now,
+    updatedAt: now,
+    expirationDate: expirationDate ? expirationDate.toISOString() : null,
+    deletionDate: deletionDate.toISOString(),
+  };
+
+  if (typeof passwordRaw.value === 'string' && passwordRaw.value.length > 0) {
+    await setSendPassword(send, passwordRaw.value);
+  } else if (send.authType === SendAuthType.Password) {
+    return errorResponse('Password is required for password auth', 400);
+  }
+
+  if (send.authType !== SendAuthType.Email) {
+    send.emails = null;
+  }
+
+  await storage.saveSend(send);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+
+  return jsonResponse(sendToResponse(send));
+}
+
+export async function handleCreateFileSendV2(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const maxFileSize = getBlobStorageMaxBytes(env, LIMITS.send.maxFileSizeBytes);
+
+  let body: unknown;
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const typeRaw = getAliasedProp(body, ['type', 'Type']);
+  const sendType = parseSendType(typeRaw.value);
+  if (sendType !== SendType.File) {
+    return errorResponse('Send content is not a file', 400);
+  }
+
+  const fileLengthRaw = getAliasedProp(body, ['fileLength', 'FileLength']);
+  const fileLengthParsed = parseFileLength(fileLengthRaw.value);
+  if (!fileLengthParsed.ok) return fileLengthParsed.response;
+  if (fileLengthParsed.value > maxFileSize) {
+    return errorResponse('Send storage limit exceeded with this file', 400);
+  }
+
+  const nameRaw = getAliasedProp(body, ['name', 'Name']);
+  const keyRaw = getAliasedProp(body, ['key', 'Key']);
+  const deletionDateRaw = getAliasedProp(body, ['deletionDate', 'DeletionDate']);
+  const fileRaw = getAliasedProp(body, ['file', 'File']);
+
+  if (typeof nameRaw.value !== 'string' || !nameRaw.value.trim()) {
+    return errorResponse('Name is required', 400);
+  }
+  if (typeof keyRaw.value !== 'string' || !keyRaw.value.trim()) {
+    return errorResponse('Key is required', 400);
+  }
+
+  const deletionDate = parseDate(deletionDateRaw.value);
+  if (!deletionDate) {
+    return errorResponse('Invalid deletionDate', 400);
+  }
+  const deletionValidation = validateDeletionDate(deletionDate);
+  if (deletionValidation) return deletionValidation;
+
+  const fileData = sanitizeSendData(fileRaw.value);
+  if (!fileData) {
+    return errorResponse('Send data not provided', 400);
+  }
+
+  const fileId = generateUUID();
+  fileData.id = fileId;
+  fileData.size = fileLengthParsed.value;
+  fileData.sizeName = formatSize(fileLengthParsed.value);
+
+  const maxAccessRaw = getAliasedProp(body, ['maxAccessCount', 'MaxAccessCount']);
+  const maxAccess = parseMaxAccessCount(maxAccessRaw.value);
+  if (!maxAccess.ok) return maxAccess.response;
+
+  const expirationRaw = getAliasedProp(body, ['expirationDate', 'ExpirationDate']);
+  const expirationDate = expirationRaw.value === null || expirationRaw.value === undefined
+    ? null
+    : parseDate(expirationRaw.value);
+  if (expirationRaw.value !== null && expirationRaw.value !== undefined && !expirationDate) {
+    return errorResponse('Invalid expirationDate', 400);
+  }
+
+  const disabledRaw = getAliasedProp(body, ['disabled', 'Disabled']);
+  const hideEmailRaw = getAliasedProp(body, ['hideEmail', 'HideEmail']);
+  const notesRaw = getAliasedProp(body, ['notes', 'Notes']);
+  const passwordRaw = getAliasedProp(body, ['password', 'Password']);
+  const authTypeRaw = getAliasedProp(body, ['authType', 'AuthType']);
+  const emailsRaw = getAliasedProp(body, ['emails', 'Emails']);
+
+  const requestedAuthType = parseSendAuthType(authTypeRaw.value);
+  if (authTypeRaw.present && requestedAuthType === null) {
+    return errorResponse('Invalid authType', 400);
+  }
+
+  const normalizedEmails = normalizeEmails(emailsRaw.value);
+  if (emailsRaw.present && emailsRaw.value !== null && normalizedEmails === null) {
+    return errorResponse('Invalid emails', 400);
+  }
+
+  const now = new Date().toISOString();
+  const send: Send = {
+    id: generateUUID(),
+    userId,
+    type: sendType,
+    name: nameRaw.value.trim(),
+    notes: typeof notesRaw.value === 'string' ? notesRaw.value : null,
+    data: JSON.stringify(fileData),
+    key: keyRaw.value,
+    passwordHash: null,
+    passwordSalt: null,
+    passwordIterations: null,
+    authType: requestedAuthType ?? SendAuthType.None,
+    emails: normalizedEmails,
+    maxAccessCount: maxAccess.value,
+    accessCount: 0,
+    disabled: typeof disabledRaw.value === 'boolean' ? disabledRaw.value : false,
+    hideEmail: typeof hideEmailRaw.value === 'boolean' ? hideEmailRaw.value : null,
+    createdAt: now,
+    updatedAt: now,
+    expirationDate: expirationDate ? expirationDate.toISOString() : null,
+    deletionDate: deletionDate.toISOString(),
+  };
+
+  if (typeof passwordRaw.value === 'string' && passwordRaw.value.length > 0) {
+    await setSendPassword(send, passwordRaw.value);
+  } else if (send.authType === SendAuthType.Password) {
+    return errorResponse('Password is required for password auth', 400);
+  }
+
+  if (send.authType !== SendAuthType.Email) {
+    send.emails = null;
+  }
+
+  await storage.saveSend(send);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+  const jwtSecret = getSafeJwtSecret(env);
+  if (!jwtSecret) {
+    return errorResponse('Server configuration error', 500);
+  }
+  const uploadToken = await createSendFileUploadToken(userId, send.id, fileId, jwtSecret);
+
+  return jsonResponse({
+    fileUploadType: 1,
+    object: 'send-fileUpload',
+    url: buildDirectUploadUrl(request, `/api/sends/${send.id}/file/${fileId}`, uploadToken),
+    sendResponse: sendToResponse(send),
+  });
+}
+
+export async function handleGetSendFileUpload(
+  request: Request,
+  env: Env,
+  userId: string,
+  sendId: string,
+  fileId: string
+): Promise<Response> {
+  void request;
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+  if (send.type !== SendType.File) {
+    return errorResponse('Send is not a file type send.', 400);
+  }
+
+  const sendData = parseStoredSendData(send);
+  const expectedFileId = typeof sendData.id === 'string' ? sendData.id : null;
+  if (!expectedFileId || expectedFileId !== fileId) {
+    return errorResponse('Send file does not match send data.', 400);
+  }
+  const jwtSecret = getSafeJwtSecret(env);
+  if (!jwtSecret) {
+    return errorResponse('Server configuration error', 500);
+  }
+  const uploadToken = await createSendFileUploadToken(userId, send.id, fileId, jwtSecret);
+
+  return jsonResponse({
+    fileUploadType: 1,
+    object: 'send-fileUpload',
+    url: buildDirectUploadUrl(request, `/api/sends/${send.id}/file/${fileId}`, uploadToken),
+    sendResponse: sendToResponse(send),
+  });
+}
+
+export async function handleUploadSendFile(
+  request: Request,
+  env: Env,
+  userId: string,
+  sendId: string,
+  fileId: string
+): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found. Unable to save the file.', 404);
+  }
+  if (send.type !== SendType.File) {
+    return errorResponse('Send is not a file type send.', 400);
+  }
+
+  return processSendFileUpload(request, env, send, fileId);
+}
+
+export async function handlePublicUploadSendFile(
+  request: Request,
+  env: Env,
+  sendId: string,
+  fileId: string
+): Promise<Response> {
+  const jwtSecret = getSafeJwtSecret(env);
+  if (!jwtSecret) {
+    return errorResponse('Server configuration error', 500);
+  }
+
+  const token = new URL(request.url).searchParams.get('token');
+  if (!token) {
+    return errorResponse('Token required', 401);
+  }
+
+  const claims = await verifySendFileUploadToken(token, jwtSecret);
+  if (!claims) {
+    return errorResponse('Invalid or expired token', 401);
+  }
+  if (claims.sendId !== sendId || claims.fileId !== fileId) {
+    return errorResponse('Token mismatch', 401);
+  }
+
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== claims.userId) {
+    return errorResponse('Send not found. Unable to save the file.', 404);
+  }
+  if (send.type !== SendType.File) {
+    return errorResponse('Send is not a file type send.', 400);
+  }
+
+  return processSendFileUpload(request, env, send, fileId);
+}
+
+export async function handleUpdateSend(request: Request, env: Env, userId: string, sendId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+
+  let body: unknown;
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  const typeRaw = getAliasedProp(body, ['type', 'Type']);
+  if (typeRaw.present) {
+    const incomingType = parseSendType(typeRaw.value);
+    if (incomingType === null) {
+      return errorResponse('Invalid Send type', 400);
+    }
+    if (incomingType !== send.type) {
+      return errorResponse("Sends can't change type", 400);
+    }
+  }
+
+  const deletionRaw = getAliasedProp(body, ['deletionDate', 'DeletionDate']);
+  if (deletionRaw.present) {
+    const deletionDate = parseDate(deletionRaw.value);
+    if (!deletionDate) return errorResponse('Invalid deletionDate', 400);
+    const deletionValidation = validateDeletionDate(deletionDate);
+    if (deletionValidation) return deletionValidation;
+    send.deletionDate = deletionDate.toISOString();
+  }
+
+  const expirationRaw = getAliasedProp(body, ['expirationDate', 'ExpirationDate']);
+  if (expirationRaw.present) {
+    if (expirationRaw.value === null || expirationRaw.value === '') {
+      send.expirationDate = null;
+    } else {
+      const expiration = parseDate(expirationRaw.value);
+      if (!expiration) return errorResponse('Invalid expirationDate', 400);
+      send.expirationDate = expiration.toISOString();
+    }
+  }
+
+  const nameRaw = getAliasedProp(body, ['name', 'Name']);
+  if (nameRaw.present) {
+    if (typeof nameRaw.value !== 'string' || !nameRaw.value.trim()) {
+      return errorResponse('Name is required', 400);
+    }
+    send.name = nameRaw.value.trim();
+  }
+
+  const keyRaw = getAliasedProp(body, ['key', 'Key']);
+  if (keyRaw.present) {
+    if (typeof keyRaw.value !== 'string' || !keyRaw.value.trim()) {
+      return errorResponse('Key is required', 400);
+    }
+    send.key = keyRaw.value;
+  }
+
+  const notesRaw = getAliasedProp(body, ['notes', 'Notes']);
+  if (notesRaw.present) {
+    send.notes = typeof notesRaw.value === 'string' ? notesRaw.value : null;
+  }
+
+  const disabledRaw = getAliasedProp(body, ['disabled', 'Disabled']);
+  if (disabledRaw.present) {
+    if (typeof disabledRaw.value !== 'boolean') {
+      return errorResponse('Invalid disabled', 400);
+    }
+    send.disabled = disabledRaw.value;
+  }
+
+  const hideEmailRaw = getAliasedProp(body, ['hideEmail', 'HideEmail']);
+  if (hideEmailRaw.present) {
+    if (hideEmailRaw.value === null) {
+      send.hideEmail = null;
+    } else if (typeof hideEmailRaw.value === 'boolean') {
+      send.hideEmail = hideEmailRaw.value;
+    } else {
+      return errorResponse('Invalid hideEmail', 400);
+    }
+  }
+
+  const maxAccessRaw = getAliasedProp(body, ['maxAccessCount', 'MaxAccessCount']);
+  if (maxAccessRaw.present) {
+    const parsedMax = parseMaxAccessCount(maxAccessRaw.value);
+    if (!parsedMax.ok) return parsedMax.response;
+    send.maxAccessCount = parsedMax.value;
+  }
+
+  if (send.type === SendType.Text) {
+    const textRaw = getAliasedProp(body, ['text', 'Text']);
+    if (textRaw.present) {
+      const textData = sanitizeSendData(textRaw.value);
+      if (!textData) {
+        return errorResponse('Send data not provided', 400);
+      }
+      send.data = JSON.stringify(textData);
+    }
+  }
+
+  const authTypeRaw = getAliasedProp(body, ['authType', 'AuthType']);
+  if (authTypeRaw.present) {
+    const parsedAuthType = parseSendAuthType(authTypeRaw.value);
+    if (parsedAuthType === null) {
+      return errorResponse('Invalid authType', 400);
+    }
+    send.authType = parsedAuthType;
+    if (parsedAuthType !== SendAuthType.Email) {
+      send.emails = null;
+    }
+  }
+
+  const emailsRaw = getAliasedProp(body, ['emails', 'Emails']);
+  if (emailsRaw.present) {
+    const normalizedEmails = normalizeEmails(emailsRaw.value);
+    if (emailsRaw.value !== null && normalizedEmails === null) {
+      return errorResponse('Invalid emails', 400);
+    }
+    send.emails = normalizedEmails;
+    if (send.emails) {
+      send.authType = SendAuthType.Email;
+    } else if (send.authType === SendAuthType.Email) {
+      send.authType = SendAuthType.None;
+    }
+  }
+
+  const passwordRaw = getAliasedProp(body, ['password', 'Password']);
+  if (passwordRaw.present && typeof passwordRaw.value === 'string') {
+    await setSendPassword(send, passwordRaw.value);
+  }
+
+  if (send.authType === SendAuthType.Password && !send.passwordHash) {
+    return errorResponse('Password is required for password auth', 400);
+  }
+
+  send.updatedAt = new Date().toISOString();
+  await storage.saveSend(send);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+
+  return jsonResponse(sendToResponse(send));
+}
+
+export async function handleDeleteSend(request: Request, env: Env, userId: string, sendId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+
+  if (send.type === SendType.File) {
+    const data = parseStoredSendData(send);
+    const fileId = typeof data.id === 'string' ? data.id : null;
+    if (fileId) {
+      await deleteBlobObject(env, getSendFileObjectKey(send.id, fileId));
+    }
+  }
+
+  await storage.deleteSend(sendId, userId);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+  await writeSendAudit(storage, request, userId, 'send.delete', {
+    id: sendId,
+    type: send.type,
+  });
+
+  return new Response(null, { status: 200 });
+}
+
+export async function handleBulkDeleteSends(request: Request, env: Env, userId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+
+  let body: { ids?: string[] };
+  try {
+    body = await request.json();
+  } catch {
+    return errorResponse('Invalid JSON', 400);
+  }
+
+  if (!body.ids || !Array.isArray(body.ids)) {
+    return errorResponse('ids array is required', 400);
+  }
+
+  const sends = await storage.getSendsByIds(body.ids, userId);
+  for (const send of sends) {
+    if (send.type !== SendType.File) continue;
+    const data = parseStoredSendData(send);
+    const fileId = typeof data.id === 'string' ? data.id : null;
+    if (fileId) {
+      await deleteBlobObject(env, getSendFileObjectKey(send.id, fileId));
+    }
+  }
+
+  const revisionDate = await storage.bulkDeleteSends(body.ids, userId);
+  if (revisionDate) {
+    notifyVaultSyncForRequest(request, env, userId, revisionDate);
+    await writeSendAudit(storage, request, userId, 'send.delete.bulk', {
+      count: sends.length,
+      requestedCount: body.ids.length,
+    });
+  }
+
+  return new Response(null, { status: 200 });
+}
+
+export async function handleRemoveSendPassword(request: Request, env: Env, userId: string, sendId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+
+  await setSendPassword(send, null);
+  send.updatedAt = new Date().toISOString();
+  await storage.saveSend(send);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+  await writeSendAudit(storage, request, userId, 'send.password.remove', {
+    id: send.id,
+    type: send.type,
+  });
+
+  return jsonResponse(sendToResponse(send));
+}
+
+export async function handleRemoveSendAuth(request: Request, env: Env, userId: string, sendId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(sendId);
+  if (!send || send.userId !== userId) {
+    return errorResponse('Send not found', 404);
+  }
+
+  send.authType = SendAuthType.None;
+  send.emails = null;
+  send.updatedAt = new Date().toISOString();
+  await storage.saveSend(send);
+  const revisionDate = await storage.updateRevisionDate(userId);
+  notifyVaultSyncForRequest(request, env, userId, revisionDate);
+  await writeSendAudit(storage, request, userId, 'send.auth.remove', {
+    id: send.id,
+    type: send.type,
+  });
+
+  return jsonResponse(sendToResponse(send));
+}

src/handlers/sends-public.ts

@@ -0,0 +1,400 @@
+import { Env, SendType } from '../types';
+import { StorageService } from '../services/storage';
+import { RateLimitService, getClientIdentifier } from '../services/ratelimit';
+import { jsonResponse, errorResponse } from '../utils/response';
+import { LIMITS } from '../config/limits';
+import {
+  createSendAccessToken,
+  createSendFileDownloadToken,
+  verifySendAccessToken,
+  verifySendFileDownloadToken,
+} from '../utils/jwt';
+import {
+  getBlobObject,
+  getSendFileObjectKey,
+} from '../services/blob-store';
+import {
+  SEND_INACCESSIBLE_MSG,
+  extractBearerToken,
+  fromAccessId,
+  getCreatorIdentifier,
+  getSafeJwtSecret,
+  hasEmailAuth,
+  isSendAvailable,
+  notifyVaultSyncForRequest,
+  parseStoredSendData,
+  resolveSendFromIdOrAccessId,
+  sendPasswordLimitKey,
+  sendPasswordLockedErrorResponse,
+  sendPasswordLockedOAuthResponse,
+  sendToAccessResponse,
+  validatePublicSendAccess,
+  verifySendPassword,
+  verifySendPasswordHashB64,
+} from './sends-shared';
+
+export async function handleAccessSend(request: Request, env: Env, accessId: string): Promise<Response> {
+  const storage = new StorageService(env.DB);
+  const sendId = fromAccessId(accessId);
+  if (!sendId) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  const send = await storage.getSend(sendId);
+  if (!send || !isSendAvailable(send)) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  let body: unknown = {};
+  try {
+    body = await request.json();
+  } catch {
+    body = {};
+  }
+
+  let sendPasswordLimitIpKey: string | null = null;
+  let sendPasswordRateLimit: RateLimitService | null = null;
+  if (send.passwordHash) {
+    const clientIdentifier = getClientIdentifier(request);
+    if (!clientIdentifier) {
+      return errorResponse('Client IP is required', 403);
+    }
+    sendPasswordLimitIpKey = sendPasswordLimitKey(clientIdentifier);
+    sendPasswordRateLimit = new RateLimitService(env.DB);
+    const sendPasswordCheck = await sendPasswordRateLimit.checkLoginAttempt(sendPasswordLimitIpKey);
+    if (!sendPasswordCheck.allowed) {
+      return sendPasswordLockedErrorResponse(sendPasswordCheck.retryAfterSeconds || 60);
+    }
+  }
+
+  const validation = await validatePublicSendAccess(send, body);
+  if (!validation.ok) {
+    if (validation.reason === 'invalid_password' && sendPasswordRateLimit && sendPasswordLimitIpKey) {
+      const failed = await sendPasswordRateLimit.recordFailedLogin(sendPasswordLimitIpKey);
+      if (failed.locked) {
+        return sendPasswordLockedErrorResponse(failed.retryAfterSeconds || 60);
+      }
+    }
+    return validation.response;
+  }
+
+  if (send.passwordHash && sendPasswordRateLimit && sendPasswordLimitIpKey) {
+    await sendPasswordRateLimit.clearLoginAttempts(sendPasswordLimitIpKey);
+  }
+
+  if (send.type === SendType.Text) {
+    const updated = await storage.incrementSendAccessCount(send.id);
+    if (!updated) {
+      return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+    }
+    send.accessCount += 1;
+    const revisionDate = await storage.updateRevisionDate(send.userId);
+    notifyVaultSyncForRequest(request, env, send.userId, revisionDate);
+  }
+
+  const creatorIdentifier = await getCreatorIdentifier(storage, send);
+  return jsonResponse(sendToAccessResponse(send, creatorIdentifier));
+}
+
+export async function handleAccessSendFile(
+  request: Request,
+  env: Env,
+  idOrAccessId: string,
+  fileId: string
+): Promise<Response> {
+  const secret = (env.JWT_SECRET || '').trim();
+  if (!secret || secret.length < LIMITS.auth.jwtSecretMinLength) {
+    return errorResponse('Server configuration error', 500);
+  }
+
+  const storage = new StorageService(env.DB);
+  const send = await resolveSendFromIdOrAccessId(storage, idOrAccessId);
+  if (!send || !isSendAvailable(send) || send.type !== SendType.File) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  const data = parseStoredSendData(send);
+  const expectedFileId = typeof data.id === 'string' ? data.id : null;
+  if (!expectedFileId || expectedFileId !== fileId) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  let body: unknown = {};
+  try {
+    body = await request.json();
+  } catch {
+    body = {};
+  }
+
+  let sendPasswordLimitIpKey: string | null = null;
+  let sendPasswordRateLimit: RateLimitService | null = null;
+  if (send.passwordHash) {
+    const clientIdentifier = getClientIdentifier(request);
+    if (!clientIdentifier) {
+      return errorResponse('Client IP is required', 403);
+    }
+    sendPasswordLimitIpKey = sendPasswordLimitKey(clientIdentifier);
+    sendPasswordRateLimit = new RateLimitService(env.DB);
+    const sendPasswordCheck = await sendPasswordRateLimit.checkLoginAttempt(sendPasswordLimitIpKey);
+    if (!sendPasswordCheck.allowed) {
+      return sendPasswordLockedErrorResponse(sendPasswordCheck.retryAfterSeconds || 60);
+    }
+  }
+
+  const validation = await validatePublicSendAccess(send, body);
+  if (!validation.ok) {
+    if (validation.reason === 'invalid_password' && sendPasswordRateLimit && sendPasswordLimitIpKey) {
+      const failed = await sendPasswordRateLimit.recordFailedLogin(sendPasswordLimitIpKey);
+      if (failed.locked) {
+        return sendPasswordLockedErrorResponse(failed.retryAfterSeconds || 60);
+      }
+    }
+    return validation.response;
+  }
+
+  if (send.passwordHash && sendPasswordRateLimit && sendPasswordLimitIpKey) {
+    await sendPasswordRateLimit.clearLoginAttempts(sendPasswordLimitIpKey);
+  }
+
+  const updated = await storage.incrementSendAccessCount(send.id);
+  if (!updated) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+  send.accessCount += 1;
+  const revisionDate = await storage.updateRevisionDate(send.userId);
+  notifyVaultSyncForRequest(request, env, send.userId, revisionDate);
+
+  const token = await createSendFileDownloadToken(send.id, fileId, secret);
+  const url = new URL(request.url);
+  const downloadUrl = `${url.origin}/api/sends/${send.id}/${fileId}?t=${token}`;
+
+  return jsonResponse({
+    object: 'send-fileDownload',
+    id: fileId,
+    url: downloadUrl,
+  });
+}
+
+export async function handleAccessSendV2(request: Request, env: Env): Promise<Response> {
+  const jwt = getSafeJwtSecret(env);
+  if (!jwt.ok) return jwt.response;
+
+  const token = extractBearerToken(request);
+  if (!token) {
+    return errorResponse('Unauthorized', 401);
+  }
+
+  const claims = await verifySendAccessToken(token, jwt.secret);
+  if (!claims) {
+    return errorResponse('Unauthorized', 401);
+  }
+
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(claims.sub);
+  if (!send || !isSendAvailable(send)) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  if (send.type === SendType.Text) {
+    const updated = await storage.incrementSendAccessCount(send.id);
+    if (!updated) {
+      return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+    }
+    send.accessCount += 1;
+    const revisionDate = await storage.updateRevisionDate(send.userId);
+    notifyVaultSyncForRequest(request, env, send.userId, revisionDate);
+  }
+
+  const creatorIdentifier = await getCreatorIdentifier(storage, send);
+  return jsonResponse(sendToAccessResponse(send, creatorIdentifier));
+}
+
+export async function handleAccessSendFileV2(request: Request, env: Env, fileId: string): Promise<Response> {
+  const jwt = getSafeJwtSecret(env);
+  if (!jwt.ok) return jwt.response;
+
+  const token = extractBearerToken(request);
+  if (!token) {
+    return errorResponse('Unauthorized', 401);
+  }
+
+  const claims = await verifySendAccessToken(token, jwt.secret);
+  if (!claims) {
+    return errorResponse('Unauthorized', 401);
+  }
+
+  const storage = new StorageService(env.DB);
+  const send = await storage.getSend(claims.sub);
+  if (!send || !isSendAvailable(send) || send.type !== SendType.File) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  const data = parseStoredSendData(send);
+  const expectedFileId = typeof data.id === 'string' ? data.id : null;
+  if (!expectedFileId || expectedFileId !== fileId) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+
+  const updated = await storage.incrementSendAccessCount(send.id);
+  if (!updated) {
+    return errorResponse(SEND_INACCESSIBLE_MSG, 404);
+  }
+  send.accessCount += 1;
+  const revisionDate = await storage.updateRevisionDate(send.userId);
+  notifyVaultSyncForRequest(request, env, send.userId, revisionDate);
+
+  const downloadToken = await createSendFileDownloadToken(send.id, fileId, jwt.secret);
+  const url = new URL(request.url);
+  const downloadUrl = `${url.origin}/api/sends/${send.id}/${fileId}?t=${downloadToken}`;
+
+  return jsonResponse({
+    object: 'send-fileDownload',
+    id: fileId,
+    url: downloadUrl,
+  });
+}
+
+export async function handleDownloadSendFile(
+  request: Request,
+  env: Env,
+  sendId: string,
+  fileId: string
+): Promise<Response> {
+  const jwt = getSafeJwtSecret(env);
+  if (!jwt.ok) return jwt.response;
+
+  const url = new URL(request.url);
+  const token = url.searchParams.get('t') || url.searchParams.get('token');
+  if (!token) {
+    return errorResponse('Token required', 401);
+  }
+
+  const claims = await verifySendFileDownloadToken(token, jwt.secret);
+  if (!claims) {
+    return errorResponse('Invalid or expired token', 401);
+  }
+  if (claims.sendId !== sendId || claims.fileId !== fileId) {
+    return errorResponse('Token mismatch', 401);
+  }
+
+  const storage = new StorageService(env.DB);
+  const object = await getBlobObject(env, getSendFileObjectKey(sendId, fileId));
+  if (!object) {
+    return errorResponse('Send file not found', 404);
+  }
+
+  const firstUse = await storage.consumeAttachmentDownloadToken(`send:${claims.jti}`, claims.exp);
+  if (!firstUse) {
+    return errorResponse('Invalid or expired token', 401);
+  }
+
+  return new Response(object.body, {
+    headers: {
+      'Content-Type': object.contentType || 'application/octet-stream',
+      'Content-Length': String(object.size),
+      'Cache-Control': 'private, no-cache',
+    },
+  });
+}
+
+export async function issueSendAccessToken(
+  env: Env,
+  sendIdOrAccessId: string,
+  passwordHashB64?: string | null,
+  password?: string | null,
+  rateLimit?: RateLimitService,
+  sendPasswordLimitIpKey?: string
+): Promise<{ token: string } | { error: Response }> {
+  const jwt = getSafeJwtSecret(env);
+  if (!jwt.ok) {
+    return { error: jwt.response };
+  }
+
+  const storage = new StorageService(env.DB);
+  const send = await resolveSendFromIdOrAccessId(storage, sendIdOrAccessId);
+
+  if (!send || !isSendAvailable(send)) {
+    return {
+      error: jsonResponse(
+        {
+          error: 'invalid_grant',
+          error_description: SEND_INACCESSIBLE_MSG,
+          send_access_error_type: 'send_not_available',
+          ErrorModel: {
+            Message: SEND_INACCESSIBLE_MSG,
+            Object: 'error',
+          },
+        },
+        400
+      ),
+    };
+  }
+
+  if (hasEmailAuth(send)) {
+    const message = 'Email verification for this Send is not supported by this server.';
+    return {
+      error: jsonResponse(
+        {
+          error: 'invalid_grant',
+          error_description: message,
+          send_access_error_type: 'email_verification_not_supported',
+          ErrorModel: {
+            Message: message,
+            Object: 'error',
+          },
+        },
+        400
+      ),
+    };
+  }
+
+  if (send.passwordHash) {
+    if (rateLimit && sendPasswordLimitIpKey) {
+      const sendPasswordCheck = await rateLimit.checkLoginAttempt(sendPasswordLimitIpKey);
+      if (!sendPasswordCheck.allowed) {
+        return {
+          error: sendPasswordLockedOAuthResponse(sendPasswordCheck.retryAfterSeconds || 60),
+        };
+      }
+    }
+
+    let ok = false;
+    if (passwordHashB64) {
+      ok = verifySendPasswordHashB64(send, passwordHashB64);
+    } else if (password) {
+      ok = await verifySendPassword(send, password);
+    }
+
+    if (!ok) {
+      if (rateLimit && sendPasswordLimitIpKey) {
+        const failed = await rateLimit.recordFailedLogin(sendPasswordLimitIpKey);
+        if (failed.locked) {
+          return {
+            error: sendPasswordLockedOAuthResponse(failed.retryAfterSeconds || 60),
+          };
+        }
+      }
+      return {
+        error: jsonResponse(
+          {
+            error: 'invalid_grant',
+            error_description: 'Invalid password.',
+            send_access_error_type: 'invalid_password',
+            ErrorModel: {
+              Message: 'Invalid password.',
+              Object: 'error',
+            },
+          },
+          400
+        ),
+      };
+    }
+
+    if (rateLimit && sendPasswordLimitIpKey) {
+      await rateLimit.clearLoginAttempts(sendPasswordLimitIpKey);
+    }
+  }
+
+  const token = await createSendAccessToken(send.id, jwt.secret);
+  return { token };
+}

src/handlers/sends-shared.ts

@@ -0,0 +1,451 @@
+import { Env, Send, SendAuthType, SendResponse, SendType, DEFAULT_DEV_SECRET } from '../types';
+import { notifyUserVaultSync } from '../durable/notifications-hub';
+import { StorageService } from '../services/storage';
+import { jsonResponse, errorResponse } from '../utils/response';
+import { readActingDeviceIdentifier } from '../utils/device';
+import { LIMITS } from '../config/limits';
+
+export const SEND_INACCESSIBLE_MSG = 'Send does not exist or is no longer available';
+const SEND_PASSWORD_ITERATIONS = 100_000;
+export const SEND_PASSWORD_LIMIT_SCOPE = 'send-password';
+
+export function notifyVaultSyncForRequest(
+  request: Request,
+  env: Env,
+  userId: string,
+  revisionDate: string
+): void {
+  notifyUserVaultSync(env, userId, revisionDate, readActingDeviceIdentifier(request));
+}
+
+export function getAliasedProp(source: unknown, aliases: string[]): { present: boolean; value: unknown } {
+  if (!source || typeof source !== 'object') return { present: false, value: undefined };
+  for (const key of aliases) {
+    if (Object.prototype.hasOwnProperty.call(source, key)) {
+      const value = (source as Record<string, unknown>)[key];
+      return { present: true, value };
+    }
+  }
+  return { present: false, value: undefined };
+}
+
+export function base64UrlEncode(data: Uint8Array): string {
+  const base64 = btoa(String.fromCharCode(...data));
+  return base64.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
+}
+
+export function base64UrlDecode(input: string): Uint8Array | null {
+  try {
+    let normalized = input.replace(/-/g, '+').replace(/_/g, '/');
+    while (normalized.length % 4) normalized += '=';
+    const raw = atob(normalized);
+    const out = new Uint8Array(raw.length);
+    for (let i = 0; i < raw.length; i++) out[i] = raw.charCodeAt(i);
+    return out;
+  } catch {
+    return null;
+  }
+}
+
+function uuidToBytes(uuid: string): Uint8Array | null {
+  const hex = uuid.replace(/-/g, '').toLowerCase();
+  if (!/^[0-9a-f]{32}$/.test(hex)) return null;
+  const bytes = new Uint8Array(16);
+  for (let i = 0; i < 16; i++) {
+    bytes[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
+  }
+  return bytes;
+}
+
+function bytesToUuid(bytes: Uint8Array): string | null {
+  if (bytes.length !== 16) return null;
+  const hex = Array.from(bytes).map((b) => b.toString(16).padStart(2, '0')).join('');
+  return [
+    hex.slice(0, 8),
+    hex.slice(8, 12),
+    hex.slice(12, 16),
+    hex.slice(16, 20),
+    hex.slice(20, 32),
+  ].join('-');
+}
+
+function toAccessId(sendId: string): string {
+  const bytes = uuidToBytes(sendId);
+  if (!bytes) return '';
+  return base64UrlEncode(bytes);
+}
+
+export function fromAccessId(accessId: string): string | null {
+  const bytes = base64UrlDecode(accessId);
+  if (!bytes || bytes.length !== 16) return null;
+  return bytesToUuid(bytes);
+}
+
+function isLikelyUuid(value: string): boolean {
+  return /^[a-f0-9-]{36}$/i.test(value);
+}
+
+export async function resolveSendFromIdOrAccessId(storage: StorageService, idOrAccessId: string): Promise<Send | null> {
+  if (isLikelyUuid(idOrAccessId)) {
+    const send = await storage.getSend(idOrAccessId);
+    if (send) return send;
+  }
+
+  const sendId = fromAccessId(idOrAccessId);
+  if (!sendId) return null;
+  return storage.getSend(sendId);
+}
+
+export function formatSize(bytes: number): string {
+  if (bytes < 1024) return `${bytes} Bytes`;
+  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(2)} KB`;
+  if (bytes < 1024 * 1024 * 1024) return `${(bytes / (1024 * 1024)).toFixed(2)} MB`;
+  return `${(bytes / (1024 * 1024 * 1024)).toFixed(2)} GB`;
+}
+
+export function parseDate(raw: unknown): Date | null {
+  if (typeof raw !== 'string' || !raw.trim()) return null;
+  const date = new Date(raw);
+  if (Number.isNaN(date.getTime())) return null;
+  return date;
+}
+
+export function parseInteger(raw: unknown): number | null {
+  if (raw === null || raw === undefined || raw === '') return null;
+  const value = typeof raw === 'string' ? Number(raw) : raw;
+  if (typeof value !== 'number' || !Number.isFinite(value) || !Number.isInteger(value)) return null;
+  return value;
+}
+
+export function sanitizeSendData(raw: unknown): Record<string, unknown> | null {
+  if (!raw || typeof raw !== 'object' || Array.isArray(raw)) return null;
+  const data = { ...(raw as Record<string, unknown>) };
+  delete data.response;
+  return data;
+}
+
+export function parseStoredSendData(send: Send): Record<string, unknown> {
+  try {
+    const parsed = JSON.parse(send.data) as unknown;
+    if (parsed && typeof parsed === 'object' && !Array.isArray(parsed)) {
+      return { ...(parsed as Record<string, unknown>) };
+    }
+    return {};
+  } catch {
+    return {};
+  }
+}
+
+function normalizeSendDataSizeField(data: Record<string, unknown>): Record<string, unknown> {
+  const normalized = { ...data };
+  if (typeof normalized.size === 'number' && Number.isFinite(normalized.size)) {
+    normalized.size = String(Math.trunc(normalized.size));
+  }
+  return normalized;
+}
+
+export function isSendAvailable(send: Send): boolean {
+  const now = Date.now();
+
+  if (send.maxAccessCount !== null && send.accessCount >= send.maxAccessCount) {
+    return false;
+  }
+
+  if (send.expirationDate) {
+    const expirationMs = new Date(send.expirationDate).getTime();
+    if (!Number.isNaN(expirationMs) && now >= expirationMs) {
+      return false;
+    }
+  }
+
+  const deletionMs = new Date(send.deletionDate).getTime();
+  if (!Number.isNaN(deletionMs) && now >= deletionMs) {
+    return false;
+  }
+
+  if (send.disabled) {
+    return false;
+  }
+
+  return true;
+}
+
+async function deriveSendPasswordHash(password: string, salt: Uint8Array, iterations: number): Promise<Uint8Array> {
+  const encoder = new TextEncoder();
+  const key = await crypto.subtle.importKey('raw', encoder.encode(password), { name: 'PBKDF2' }, false, ['deriveBits']);
+  const bits = await crypto.subtle.deriveBits(
+    {
+      name: 'PBKDF2',
+      salt,
+      iterations,
+      hash: 'SHA-256',
+    },
+    key,
+    256
+  );
+  return new Uint8Array(bits);
+}
+
+function constantTimeEqual(a: Uint8Array, b: Uint8Array): boolean {
+  if (a.length !== b.length) return false;
+  let diff = 0;
+  for (let i = 0; i < a.length; i++) {
+    diff |= a[i] ^ b[i];
+  }
+  return diff === 0;
+}
+
+function isLikelyHashB64(value: string): boolean {
+  const raw = String(value || '').trim();
+  if (!raw) return false;
+  if (!/^[A-Za-z0-9+/_=-]+$/.test(raw)) return false;
+  const decoded = base64UrlDecode(raw);
+  return !!decoded && decoded.length === 32;
+}
+
+export async function setSendPassword(send: Send, password: string | null): Promise<void> {
+  if (!password) {
+    send.passwordHash = null;
+    send.passwordSalt = null;
+    send.passwordIterations = null;
+    if (send.authType === SendAuthType.Password) {
+      send.authType = SendAuthType.None;
+    }
+    return;
+  }
+
+  if (isLikelyHashB64(password)) {
+    send.passwordHash = password.trim();
+    send.passwordSalt = null;
+    send.passwordIterations = null;
+    send.authType = SendAuthType.Password;
+    return;
+  }
+
+  const salt = crypto.getRandomValues(new Uint8Array(64));
+  const hash = await deriveSendPasswordHash(password, salt, SEND_PASSWORD_ITERATIONS);
+
+  send.passwordSalt = base64UrlEncode(salt);
+  send.passwordHash = base64UrlEncode(hash);
+  send.passwordIterations = SEND_PASSWORD_ITERATIONS;
+  send.authType = SendAuthType.Password;
+}
+
+export async function verifySendPassword(send: Send, password: string): Promise<boolean> {
+  if (!send.passwordHash) {
+    return false;
+  }
+
+  if (!send.passwordSalt || !send.passwordIterations) {
+    return verifySendPasswordHashB64(send, password);
+  }
+
+  const salt = base64UrlDecode(send.passwordSalt);
+  const expected = base64UrlDecode(send.passwordHash);
+  if (!salt || !expected) return false;
+
+  const actual = await deriveSendPasswordHash(password, salt, send.passwordIterations);
+  return constantTimeEqual(actual, expected);
+}
+
+export function verifySendPasswordHashB64(send: Send, passwordHashB64: string): boolean {
+  if (!send.passwordHash || !passwordHashB64) return false;
+  const expected = base64UrlDecode(send.passwordHash);
+  const provided = base64UrlDecode(passwordHashB64);
+  if (!expected || !provided) return false;
+  return constantTimeEqual(expected, provided);
+}
+
+export function validateDeletionDate(date: Date): Response | null {
+  const maxMs = Date.now() + LIMITS.send.maxDeletionDays * 24 * 60 * 60 * 1000;
+  if (date.getTime() > maxMs) {
+    return errorResponse(
+      'You cannot have a Send with a deletion date that far into the future. Adjust the Deletion Date to a value less than 31 days from now and try again.',
+      400
+    );
+  }
+  return null;
+}
+
+export function parseMaxAccessCount(value: unknown): { ok: true; value: number | null } | { ok: false; response: Response } {
+  const parsed = parseInteger(value);
+  if (value === undefined || value === null || value === '') {
+    return { ok: true, value: null };
+  }
+  if (parsed === null || parsed < 0) {
+    return { ok: false, response: errorResponse('Invalid maxAccessCount', 400) };
+  }
+  return { ok: true, value: parsed };
+}
+
+export function parseFileLength(value: unknown): { ok: true; value: number } | { ok: false; response: Response } {
+  const parsed = parseInteger(value);
+  if (parsed === null) {
+    return { ok: false, response: errorResponse('Invalid send length', 400) };
+  }
+  if (parsed < 0) {
+    return { ok: false, response: errorResponse("Send size can't be negative", 400) };
+  }
+  return { ok: true, value: parsed };
+}
+
+export function parseSendType(value: unknown): SendType | null {
+  const type = parseInteger(value);
+  if (type === SendType.Text || type === SendType.File) return type;
+  return null;
+}
+
+export function parseSendAuthType(value: unknown): SendAuthType | null {
+  if (value === undefined || value === null || value === '') return null;
+  const parsed = parseInteger(value);
+  if (parsed === SendAuthType.Email || parsed === SendAuthType.Password || parsed === SendAuthType.None) {
+    return parsed;
+  }
+  return null;
+}
+
+export function normalizeEmails(value: unknown): string | null {
+  if (value === null || value === undefined || value === '') return null;
+  if (typeof value === 'string') return value;
+  if (Array.isArray(value)) {
+    const strings = value.filter((v) => typeof v === 'string').map((v) => String(v));
+    if (strings.length === 0) return null;
+    return strings.join(',');
+  }
+  return null;
+}
+
+export function hasEmailAuth(send: Send): boolean {
+  return send.authType === SendAuthType.Email;
+}
+
+export function getSafeJwtSecret(env: Env): { ok: true; secret: string } | { ok: false; response: Response } {
+  const secret = (env.JWT_SECRET || '').trim();
+  if (!secret || secret.length < LIMITS.auth.jwtSecretMinLength || secret === DEFAULT_DEV_SECRET) {
+    return { ok: false, response: errorResponse('Server configuration error', 500) };
+  }
+  return { ok: true, secret };
+}
+
+export function extractBearerToken(request: Request): string | null {
+  const authHeader = request.headers.get('Authorization');
+  if (!authHeader) return null;
+  const match = authHeader.match(/^Bearer\s+(.+)$/i);
+  return match ? match[1].trim() : null;
+}
+
+export function sendToResponse(send: Send): SendResponse {
+  const data = normalizeSendDataSizeField(parseStoredSendData(send));
+  return {
+    id: send.id,
+    accessId: toAccessId(send.id),
+    type: Number(send.type) || 0,
+    name: send.name,
+    notes: send.notes,
+    text: send.type === SendType.Text ? data : null,
+    file: send.type === SendType.File ? data : null,
+    key: send.key,
+    maxAccessCount: send.maxAccessCount,
+    accessCount: send.accessCount,
+    password: send.passwordHash,
+    emails: send.emails,
+    authType: send.authType,
+    disabled: send.disabled,
+    hideEmail: send.hideEmail,
+    revisionDate: send.updatedAt,
+    expirationDate: send.expirationDate,
+    deletionDate: send.deletionDate,
+    object: 'send',
+  };
+}
+
+export function sendToAccessResponse(send: Send, creatorIdentifier: string | null): Record<string, unknown> {
+  const data = normalizeSendDataSizeField(parseStoredSendData(send));
+  return {
+    id: send.id,
+    type: Number(send.type) || 0,
+    name: send.name,
+    text: send.type === SendType.Text ? data : null,
+    file: send.type === SendType.File ? data : null,
+    expirationDate: send.expirationDate,
+    deletionDate: send.deletionDate,
+    creatorIdentifier,
+    object: 'send-access',
+  };
+}
+
+export async function getCreatorIdentifier(storage: StorageService, send: Send): Promise<string | null> {
+  if (send.hideEmail) return null;
+  const owner = await storage.getUserById(send.userId);
+  return owner?.email ?? null;
+}
+
+export type PublicSendAccessValidationResult =
+  | { ok: true }
+  | { ok: false; response: Response; reason: 'email_auth_unsupported' | 'password_missing' | 'invalid_password' };
+
+export function sendPasswordLimitKey(clientIdentifier: string): string {
+  return `${clientIdentifier}:${SEND_PASSWORD_LIMIT_SCOPE}`;
+}
+
+function sendPasswordLockMessage(retryAfterSeconds: number): string {
+  return `Too many failed send password attempts. Try again in ${Math.ceil(retryAfterSeconds / 60)} minutes.`;
+}
+
+export function sendPasswordLockedErrorResponse(retryAfterSeconds: number): Response {
+  return errorResponse(sendPasswordLockMessage(retryAfterSeconds), 429);
+}
+
+export function sendPasswordLockedOAuthResponse(retryAfterSeconds: number): Response {
+  const message = sendPasswordLockMessage(retryAfterSeconds);
+  return jsonResponse(
+    {
+      error: 'invalid_grant',
+      error_description: message,
+      send_access_error_type: 'too_many_password_attempts',
+      ErrorModel: {
+        Message: message,
+        Object: 'error',
+      },
+    },
+    429
+  );
+}
+
+export async function validatePublicSendAccess(send: Send, body: unknown): Promise<PublicSendAccessValidationResult> {
+  if (hasEmailAuth(send)) {
+    return { ok: false, response: errorResponse(SEND_INACCESSIBLE_MSG, 404), reason: 'email_auth_unsupported' };
+  }
+
+  if (!send.passwordHash) return { ok: true };
+
+  const passwordRaw = getAliasedProp(body, ['password', 'Password']);
+  const passwordHashB64Raw = getAliasedProp(body, [
+    'password_hash_b64',
+    'passwordHashB64',
+    'passwordHash',
+    'password_hash',
+  ]);
+
+  let validPassword = false;
+  if (send.passwordSalt && send.passwordIterations) {
+    if (typeof passwordRaw.value !== 'string') {
+      return { ok: false, response: errorResponse('Password not provided', 401), reason: 'password_missing' };
+    }
+    validPassword = await verifySendPassword(send, passwordRaw.value);
+  } else {
+    const candidate =
+      typeof passwordHashB64Raw.value === 'string'
+        ? passwordHashB64Raw.value
+        : typeof passwordRaw.value === 'string'
+          ? passwordRaw.value
+          : '';
+    if (!candidate) return { ok: false, response: errorResponse('Password not provided', 401), reason: 'password_missing' };
+    validPassword = verifySendPasswordHashB64(send, candidate);
+  }
+  if (!validPassword) {
+    return { ok: false, response: errorResponse('Invalid password', 400), reason: 'invalid_password' };
+  }
+
+  return { ok: true };
+}

src/handlers/sends.ts

@@ -0,0 +1,3 @@
+export * from './sends-shared';
+export * from './sends-private';
+export * from './sends-public';

src/handlers/setup.ts

@@ -1,51 +0,0 @@
-import { Env, DEFAULT_DEV_SECRET } from '../types';
-import { StorageService } from '../services/storage';
-import { jsonResponse, htmlResponse, errorResponse } from '../utils/response';
-import { renderJwtSecretWarningPage, JwtSecretState } from './setupPages';
-import { handleRegisterPage } from './setupRegisterPage';
-
-function getJwtSecretState(env: Env): JwtSecretState | null {
-  const secret = (env.JWT_SECRET || '').trim();
-  if (!secret) return 'missing';
-  // Block common "forgot to change" sample value (matches .dev.vars.example)
-  if (secret === DEFAULT_DEV_SECRET) return 'default';
-  if (secret.length < 32) return 'too_short';
-  return null;
-}
-
-// GET / - Setup page
-export async function handleSetupPage(request: Request, env: Env): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const disabled = await storage.isSetupDisabled();
-  if (disabled) {
-    return new Response(null, { status: 404 });
-  }
-
-  // Guard: require a strong JWT_SECRET before allowing setup/registration.
-  const jwtState = getJwtSecretState(env);
-  if (jwtState) {
-    return htmlResponse(renderJwtSecretWarningPage(request, jwtState), 200);
-  }
-
-  // Serve the registration/setup UI (split into a dedicated module).
-  return handleRegisterPage(request, env);
-}
-
-// GET /setup/status
-export async function handleSetupStatus(request: Request, env: Env): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const registered = await storage.isRegistered();
-  const disabled = await storage.isSetupDisabled();
-  return jsonResponse({ registered, disabled });
-}
-
-// POST /setup/disable
-export async function handleDisableSetup(request: Request, env: Env): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const registered = await storage.isRegistered();
-  if (!registered) {
-    return errorResponse('Registration required', 403);
-  }
-  await storage.setSetupDisabled();
-  return jsonResponse({ success: true });
-}

src/handlers/setupPages.ts

@@ -1,290 +0,0 @@
-import { Env } from '../types';
-
-// NOTE: Kept as a single file with inline HTML/CSS to avoid external assets.
-// This file splits the old monolithic setup page into reusable page generators.
-
-type Lang = 'zh' | 'en';
-
-function isChineseFromRequest(request: Request): boolean {
-  const acceptLang = (request.headers.get('accept-language') || '').toLowerCase();
-  return acceptLang.includes('zh');
-}
-
-function t(lang: Lang, key: string): string {
-  const zh: Record<string, string> = {
-    app: 'NodeWarden',
-  tag: '部署在 Cloudflare Workers 上的 Bitwarden 兼容服务端。',
-
-    // Config warning page
-    cfgTitle: '需要配置 JWT_SECRET',
-    cfgDescMissing: '当前服务没有配置 JWT_SECRET（用于签名登录令牌）。为了安全起见，必须先配置后才能注册/使用。',
-    cfgDescDefault: '检测到你正在使用示例/默认 JWT_SECRET。为了安全起见，请先修改为随机强密钥后再注册/使用。',
-    cfgDescTooShort: '检测到 JWT_SECRET 长度不足 32 个字符。为了安全起见，请使用至少 32 位的随机字符串。',
-    cfgStepsTitle: '如何在 Cloudflare 修改 JWT_SECRET',
-  cfgSteps: '打开 Cloudflare 控制台 → Workers 和 Pages → 选择 nodewarden → 设置 → 变量和机密 → 添加变量。\n类型：密钥\n名称：JWT_SECRET\n值：粘贴你生成的随机密钥\n保存后，等待重新部署生效。',
-    cfgGenTitle: '随机密钥生成器',
-    cfgGenHint: '建议长度：至少 32 字符（推荐 64+）。点击刷新生成新的随机值。',
-    cfgCopy: '复制',
-    cfgRefresh: '刷新',
-
-    // Shared
-    by: '作者',
-    github: 'GitHub',
-  };
-
-  const en: Record<string, string> = {
-    app: 'NodeWarden',
-  tag: 'Minimal Bitwarden-compatible server on Cloudflare Workers.',
-
-    // Config warning page
-    cfgTitle: 'JWT_SECRET is required',
-    cfgDescMissing: 'This server has no JWT_SECRET configured (used to sign login tokens). For safety, you must configure it before registration/usage.',
-    cfgDescDefault: 'You are using the sample/default JWT_SECRET. For safety, please change it to a strong random secret before registration/usage.',
-    cfgDescTooShort: 'JWT_SECRET is shorter than 32 characters. For safety, use a random string with at least 32 characters.',
-    cfgStepsTitle: 'How to set JWT_SECRET in Cloudflare',
-  cfgSteps: 'Open Cloudflare Dashboard → Workers & Pages → select nodewarden → Settings → Variables and Secrets → Add variable.\nType: Secret\nName: JWT_SECRET\nValue: paste a random secret\nSave, and wait for redeploy to take effect.',
-    cfgGenTitle: 'Random secret generator',
-    cfgGenHint: 'Recommended length: 32+ characters (64+ preferred). Click refresh to generate a new one.',
-    cfgCopy: 'Copy',
-    cfgRefresh: 'Refresh',
-
-    // Shared
-    by: 'By',
-    github: 'GitHub',
-  };
-
-  return (lang === 'zh' ? zh : en)[key] ?? key;
-}
-
-function baseStyles(): string {
-  // Keep consistent with existing setup page look & feel.
-  return `
-    :root {
-      color-scheme: light;
-      --bg0: #0b0b0f;
-      --bg1: #0f1020;
-      --card: rgba(255, 255, 255, 0.08);
-      --card2: rgba(255, 255, 255, 0.06);
-      --border: rgba(255, 255, 255, 0.14);
-      --text: rgba(255, 255, 255, 0.92);
-      --muted: rgba(255, 255, 255, 0.62);
-      --muted2: rgba(255, 255, 255, 0.52);
-      --accent: #0a84ff;
-      --accent2: #64d2ff;
-      --danger: #ff453a;
-      --ok: #32d74b;
-      --shadow: 0 16px 60px rgba(0, 0, 0, 0.50);
-      --radius: 18px;
-      --radius2: 14px;
-      --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-    }
-    * { box-sizing: border-box; }
-    html, body { height: 100%; }
-    body {
-      margin: 0;
-      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
-      background:
-        radial-gradient(900px 600px at 15% 10%, rgba(100, 210, 255, 0.25), transparent 60%),
-        radial-gradient(900px 600px at 85% 20%, rgba(10, 132, 255, 0.22), transparent 60%),
-        radial-gradient(900px 600px at 50% 90%, rgba(50, 215, 75, 0.10), transparent 60%),
-        linear-gradient(180deg, var(--bg0), var(--bg1));
-      color: var(--text);
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      padding: 24px;
-    }
-    .shell { width: max(500px); }
-    .panel {
-      padding: 22px;
-      border: 1px solid var(--border);
-      background: rgba(255,255,255,0.06);
-      border-radius: var(--radius);
-      box-shadow: var(--shadow);
-      backdrop-filter: blur(16px);
-      -webkit-backdrop-filter: blur(16px);
-    }
-    .top {
-      display: flex;
-      gap: 14px;
-      align-items: center;
-      margin-bottom: 14px;
-    }
-    .mark {
-      width: 46px;
-      height: 46px;
-      border-radius: 14px;
-      background: linear-gradient(135deg, rgba(10,132,255,0.85), rgba(100,210,255,0.55));
-      border: 1px solid rgba(255,255,255,0.20);
-      box-shadow: 0 10px 40px rgba(10, 132, 255, 0.30);
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      font-weight: 800;
-      letter-spacing: 1px;
-      color: rgba(255,255,255,0.96);
-      text-transform: uppercase;
-      user-select: none;
-    }
-    .title { display: flex; flex-direction: column; gap: 4px; }
-    .title h1 { font-size: 22px; margin: 0; letter-spacing: -0.3px; }
-    .title p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
-
-    h2 { font-size: 16px; margin: 14px 0 10px 0; letter-spacing: -0.2px; }
-    .lead { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,0.86); }
-
-    .kv {
-      border-radius: var(--radius2);
-      border: 1px solid rgba(255,255,255,0.14);
-      background: rgba(255,255,255,0.05);
-      padding: 14px;
-      margin-top: 12px;
-    }
-    .kv h3 { margin: 0 0 8px 0; font-size: 13px; color: rgba(255,255,255,0.86); }
-    .kv p { margin: 0; font-size: 12px; line-height: 1.55; color: var(--muted); white-space: pre-line; }
-
-    .server {
-      margin-top: 10px;
-      font-family: var(--mono);
-      font-size: 12px;
-      padding: 10px 12px;
-      border-radius: 12px;
-      background: rgba(0,0,0,0.25);
-      border: 1px solid rgba(255,255,255,0.12);
-      word-break: break-all;
-      color: rgba(255,255,255,0.90);
-    }
-
-    .row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
-    .btn {
-      height: 38px;
-      padding: 0 12px;
-      border-radius: 12px;
-      border: 1px solid rgba(255,255,255,0.18);
-      background: rgba(0,0,0,0.18);
-      color: rgba(255,255,255,0.92);
-      font-weight: 700;
-      cursor: pointer;
-    }
-    .btn.primary {
-      background: linear-gradient(135deg, rgba(10,132,255,0.95), rgba(100,210,255,0.60));
-    }
-    .btn:disabled { opacity: 0.55; cursor: not-allowed; }
-
-    a { color: rgba(100, 210, 255, 0.92); text-decoration: none; }
-    a:hover { text-decoration: underline; }
-
-    .footer {
-      margin-top: 18px;
-      padding-top: 14px;
-      border-top: 1px solid rgba(255,255,255,0.10);
-      display: flex;
-      justify-content: space-between;
-      gap: 12px;
-      flex-wrap: wrap;
-      font-size: 12px;
-      color: rgba(255,255,255,0.55);
-    }
-  `;
-}
-
-export type JwtSecretState = 'missing' | 'default' | 'too_short';
-
-export function renderJwtSecretWarningPage(request: Request, state: JwtSecretState): string {
-  const lang: Lang = isChineseFromRequest(request) ? 'zh' : 'en';
-
-  const descKey = state === 'missing' ? 'cfgDescMissing' : state === 'default' ? 'cfgDescDefault' : 'cfgDescTooShort';
-
-  return `<!DOCTYPE html>
-<html lang="${lang === 'zh' ? 'zh-CN' : 'en'}">
-<head>
-  <meta charset="UTF-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>NodeWarden</title>
-  <style>${baseStyles()}</style>
-</head>
-<body>
-  <div class="shell">
-    <aside class="panel">
-      <div class="top">
-        <div class="mark" aria-label="NodeWarden">NW</div>
-        <div class="title">
-          <h1>${t(lang, 'app')}</h1>
-          <p>${t(lang, 'tag')}</p>
-        </div>
-      </div>
-
-      <h2>${t(lang, 'cfgTitle')}</h2>
-      <div class="lead">${t(lang, descKey)}</div>
-
-      <div class="kv">
-        <h3>${t(lang, 'cfgStepsTitle')}</h3>
-        <p>${t(lang, 'cfgSteps')
-          .replace(/^类型：密钥/m, '<b>类型：密钥</b>')
-          .replace(/^名称：JWT_SECRET/m, '<b>名称：JWT_SECRET</b>')
-          .replace(/^Type: Secret/m, '<b>Type: Secret</b>')
-          .replace(/^Name: JWT_SECRET/m, '<b>Name: JWT_SECRET</b>')
-        }</p>
-      </div>
-
-      <div class="kv">
-        <h3>${t(lang, 'cfgGenTitle')}</h3>
-        <p>${t(lang, 'cfgGenHint')}</p>
-        <div class="server" id="secret"></div>
-        <div style="height: 10px"></div>
-        <div class="row">
-          <button class="btn primary" type="button" onclick="refreshSecret()">${t(lang, 'cfgRefresh')}</button>
-          <button class="btn" type="button" onclick="copySecret()">${t(lang, 'cfgCopy')}</button>
-        </div>
-      </div>
-
-      <div class="footer">
-        <div>
-          <span>${t(lang, 'by')} </span>
-          <a href="https://shuai.plus" target="_blank" rel="noreferrer">shuaiplus</a>
-        </div>
-        <div>
-          <a href="https://github.com/shuaiplus/nodewarden" target="_blank" rel="noreferrer">${t(lang, 'github')}</a>
-        </div>
-      </div>
-    </aside>
-  </div>
-
-  <script>
-    // Generate a URL-safe random secret (default length: 64)
-    function genSecret(len) {
-      len = len || 50;
-      const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';
-      const bytes = new Uint8Array(len);
-      crypto.getRandomValues(bytes);
-      let out = '';
-      for (let i = 0; i < bytes.length; i++) {
-        out += chars[bytes[i] % chars.length];
-      }
-      return out;
-    }
-
-    function refreshSecret() {
-      const s = genSecret(50);
-      document.getElementById('secret').textContent = s;
-    }
-
-    async function copySecret() {
-      const s = document.getElementById('secret').textContent || '';
-      try {
-        await navigator.clipboard.writeText(s);
-      } catch {
-        const ta = document.createElement('textarea');
-        ta.value = s;
-        document.body.appendChild(ta);
-        ta.select();
-        document.execCommand('copy');
-        ta.remove();
-      }
-    }
-
-    refreshSecret();
-  </script>
-</body>
-</html>`;
-}

src/handlers/setupRegisterPage.ts

@@ -1,668 +0,0 @@
-import { Env } from '../types';
-import { StorageService } from '../services/storage';
-import { htmlResponse } from '../utils/response';
-
-// Registration/setup page HTML (single-file, no external assets)
-// Split out from the old monolithic `setup.ts` as requested.
-const registerPageHTML = `<!DOCTYPE html>
-<html lang="en">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>NodeWarden</title>
-  <style>
-    :root {
-      color-scheme: light;
-      --bg0: #0b0b0f;
-      --bg1: #0f1020;
-      --card: rgba(255, 255, 255, 0.08);
-      --card2: rgba(255, 255, 255, 0.06);
-      --border: rgba(255, 255, 255, 0.14);
-      --text: rgba(255, 255, 255, 0.92);
-      --muted: rgba(255, 255, 255, 0.62);
-      --muted2: rgba(255, 255, 255, 0.52);
-      --accent: #0a84ff;
-      --accent2: #64d2ff;
-      --danger: #ff453a;
-      --ok: #32d74b;
-      --shadow: 0 16px 60px rgba(0, 0, 0, 0.50);
-      --radius: 18px;
-      --radius2: 14px;
-      --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-    }
-    * { box-sizing: border-box; }
-    html, body { height: 100%; }
-    body {
-      margin: 0;
-      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
-      background:
-        radial-gradient(900px 600px at 15% 10%, rgba(100, 210, 255, 0.25), transparent 60%),
-        radial-gradient(900px 600px at 85% 20%, rgba(10, 132, 255, 0.22), transparent 60%),
-        radial-gradient(900px 600px at 50% 90%, rgba(50, 215, 75, 0.10), transparent 60%),
-        linear-gradient(180deg, var(--bg0), var(--bg1));
-      color: var(--text);
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      padding: 24px;
-    }
-    .shell { width: max(500px); }
-    .panel {
-      padding: 22px;
-      border: 1px solid var(--border);
-      background: rgba(255,255,255,0.06);
-      border-radius: var(--radius);
-      box-shadow: var(--shadow);
-      backdrop-filter: blur(16px);
-      -webkit-backdrop-filter: blur(16px);
-    }
-    .top {
-      display: flex;
-      gap: 14px;
-      align-items: center;
-      margin-bottom: 14px;
-    }
-    .mark {
-      width: 46px;
-      height: 46px;
-      border-radius: 14px;
-      background: linear-gradient(135deg, rgba(10,132,255,0.85), rgba(100,210,255,0.55));
-      border: 1px solid rgba(255,255,255,0.20);
-      box-shadow: 0 10px 40px rgba(10, 132, 255, 0.30);
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      font-weight: 800;
-      letter-spacing: 1px;
-      color: rgba(255,255,255,0.96);
-      text-transform: uppercase;
-      user-select: none;
-    }
-    .title { display: flex; flex-direction: column; gap: 4px; }
-    .title h1 { font-size: 22px; margin: 0; letter-spacing: -0.3px; }
-    .title p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
-
-    h2 { font-size: 16px; margin: 14px 0 10px 0; letter-spacing: -0.2px; }
-
-    .message {
-      display: none;
-      border-radius: 14px;
-      padding: 12px 12px;
-      margin: 0 0 12px 0;
-      font-size: 13px;
-      line-height: 1.45;
-      border: 1px solid rgba(255,255,255,0.14);
-      background: rgba(255,255,255,0.06);
-    }
-    .message.error {
-      display: block;
-      border-color: rgba(255, 69, 58, 0.40);
-      background: rgba(255, 69, 58, 0.10);
-      color: rgba(255, 255, 255, 0.92);
-    }
-    .message.success {
-      display: block;
-      border-color: rgba(50, 215, 75, 0.35);
-      background: rgba(50, 215, 75, 0.10);
-      color: rgba(255, 255, 255, 0.92);
-    }
-
-    .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
-    @media (max-width: 540px) { .grid { grid-template-columns: 1fr; } }
-
-    .field { display: flex; flex-direction: column; gap: 7px; }
-    label { font-size: 12px; color: var(--muted); letter-spacing: 0.2px; }
-    input {
-      height: 42px;
-      padding: 0 12px;
-      border-radius: 12px;
-      border: 1px solid rgba(255,255,255,0.18);
-      background: rgba(0,0,0,0.18);
-      color: rgba(255,255,255,0.92);
-      outline: none;
-      font-size: 14px;
-      transition: border-color 160ms ease, box-shadow 160ms ease;
-    }
-    input::placeholder { color: rgba(255,255,255,0.35); }
-    input:focus {
-      border-color: rgba(10, 132, 255, 0.55);
-      box-shadow: 0 0 0 6px rgba(10, 132, 255, 0.12);
-    }
-    .hint { margin: 0; color: var(--muted2); font-size: 12px; line-height: 1.55; }
-
-    .actions { margin-top: 12px; display: flex; gap: 10px; align-items: center; }
-    .primary {
-      width: 100%;
-      height: 44px;
-      border-radius: 14px;
-      border: 1px solid rgba(255,255,255,0.18);
-      background: linear-gradient(135deg, rgba(10,132,255,0.95), rgba(100,210,255,0.60));
-      color: rgba(255,255,255,0.96);
-      font-weight: 700;
-      letter-spacing: 0.2px;
-      cursor: pointer;
-      transition: transform 120ms ease, filter 120ms ease;
-    }
-    .primary:hover { filter: brightness(1.03); }
-    .primary:active { transform: translateY(1px) scale(0.99); }
-    .primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
-
-    .sideCard { display: flex; flex-direction: column; gap: 12px; }
-    .kv {
-      border-radius: var(--radius2);
-      border: 1px solid rgba(255,255,255,0.14);
-      background: rgba(255,255,255,0.05);
-      padding: 14px;
-      margin-bottom: 10px;
-    }
-    .kv h3 { margin: 0 0 8px 0; font-size: 13px; color: rgba(255,255,255,0.86); }
-    .kv p { margin: 0; font-size: 12px; line-height: 1.55; color: var(--muted); }
-
-    .server {
-      margin-top: 10px;
-      font-family: var(--mono);
-      font-size: 12px;
-      padding: 10px 12px;
-      border-radius: 12px;
-      background: rgba(0,0,0,0.25);
-      border: 1px solid rgba(255,255,255,0.12);
-      word-break: break-all;
-      color: rgba(255,255,255,0.90);
-    }
-    a { color: rgba(100, 210, 255, 0.92); text-decoration: none; }
-    a:hover { text-decoration: underline; }
-    .footer {
-      margin-top: 18px;
-      padding-top: 14px;
-      border-top: 1px solid rgba(255,255,255,0.10);
-      display: flex;
-      justify-content: space-between;
-      gap: 12px;
-      flex-wrap: wrap;
-      font-size: 12px;
-      color: rgba(255,255,255,0.55);
-    }
-    .muted { color: var(--muted); }
-  </style>
-</head>
-<body>
-  <div class="shell">
-    <aside class="panel">
-      <div class="top">
-        <div class="mark" aria-label="NodeWarden">NW</div>
-        <div class="title">
-          <h1 id="t_app">NodeWarden</h1>
-          <p id="t_tag">Minimal Bitwarden-compatible server on Cloudflare Workers.</p>
-        </div>
-      </div>
-
-      <div class="muted" id="t_intro" style="font-size: 13px; line-height: 1.7;">
-        Create your first account to finish setup. Then use any official Bitwarden client to sign in.
-      </div>
-
-      <div style="height: 14px"></div>
-      <h2 id="t_setup">Setup</h2>
-
-      <div id="message" class="message"></div>
-
-      <div id="setup-form">
-        <form id="form" onsubmit="handleSubmit(event)">
-          <div class="grid">
-            <div class="field">
-              <label for="name" id="t_name_label">Name</label>
-              <input type="text" id="name" name="name" required placeholder="Your name">
-            </div>
-            <div class="field">
-              <label for="email" id="t_email_label">Email</label>
-              <input type="email" id="email" name="email" required placeholder="you@example.com" autocomplete="email">
-            </div>
-          </div>
-
-          <div style="height: 10px"></div>
-          <div class="field">
-            <label for="password" id="t_pw_label">Master password</label>
-            <input type="password" id="password" name="password" required minlength="12" placeholder="At least 12 characters" autocomplete="new-password">
-            <p class="hint" id="t_pw_hint">Choose a strong password you can remember. The server cannot recover it.</p>
-          </div>
-
-          <div style="height: 10px"></div>
-          <div class="field">
-            <label for="confirmPassword" id="t_pw2_label">Confirm password</label>
-            <input type="password" id="confirmPassword" name="confirmPassword" required placeholder="Confirm password" autocomplete="new-password">
-          </div>
-
-          <div class="actions">
-            <button type="submit" id="submitBtn" class="primary">Create account</button>
-          </div>
-        </form>
-      </div>
-
-      <div id="registered-view" class="sideCard" style="display: none;">
-        <div class="kv">
-          <h3 id="t_done_title">Setup complete</h3>
-          <p id="t_done_desc">Your server is ready. Configure your Bitwarden client with this server URL:</p>
-          <div class="server" id="serverUrl"></div>
-        </div>
-
-        <div class="kv">
-          <h3 id="t_important">Important</h3>
-          <p id="t_limitations">
-            This project is designed for a single user. You cannot add new users. Changing the master password is not supported.
-            If you forget it, you must redeploy and register again.
-          </p>
-        </div>
-
-        <div class="kv">
-          <h3 id="t_hide_title">Hide setup page</h3>
-          <p id="t_hide_desc">After hiding, this setup page will return 404 for everyone. Your vault will keep working.</p>
-          <div class="actions">
-            <button type="button" id="hideBtn" class="primary" onclick="disableSetupPage()">Hide setup page</button>
-          </div>
-        </div>
-      </div>
-
-      <div class="footer">
-        <div>
-          <span class="muted" id="t_by">By</span>
-          <a href="https://shuai.plus" target="_blank" rel="noreferrer">shuaiplus</a>
-        </div>
-        <div>
-          <a href="https://github.com/shuaiplus/nodewarden" target="_blank" rel="noreferrer">GitHub</a>
-        </div>
-      </div>
-    </aside>
-  </div>
-
-  <script>
-    let isRegistered = false;
-
-    function isChinese() {
-      const lang = (navigator.language || '').toLowerCase();
-      return lang.startsWith('zh');
-    }
-
-    function t(key) {
-      const zh = {
-        app: 'NodeWarden',
-  tag: '部署在 Cloudflare Workers 上的 Bitwarden 兼容服务端。',
-        intro: '创建第一个账号完成初始化，然后用任意 Bitwarden 官方客户端登录。',
-        by: '作者',
-        setup: '初始化',
-        nameLabel: '昵称',
-        emailLabel: '邮箱',
-        pwLabel: '主密码',
-        pwHint: '请选择你能记住的强密码。服务器无法找回主密码。',
-        pw2Label: '确认主密码',
-        create: '创建账号',
-        creating: '正在创建…',
-        doneTitle: '初始化完成',
-        doneDesc: '服务已就绪。在 Bitwarden 客户端中填入以下服务器地址：',
-        important: '重要提示',
-        limitations: '本项目仅支持单用户：不能添加新用户；不支持修改主密码；如果忘记主密码，只能重新部署并重新注册。',
-        hideTitle: '隐藏初始化页',
-        hideDesc: '隐藏后，初始化页对任何人都会直接返回 404。你的密码库仍可正常使用。',
-        hideBtn: '隐藏初始化页',
-        hideWorking: '正在隐藏…',
-        hideDone: '已隐藏，此页面将返回 404。',
-        hideFailed: '隐藏失败',
-        hideConfirm: '确认隐藏初始化页？隐藏后页面将不可访问，但你的密码库不会受影响。',
-        errPwNotMatch: '两次输入的密码不一致',
-        errPwTooShort: '密码长度至少 12 位',
-        errGeneric: '发生错误：',
-        errRegisterFailed: '注册失败',
-      };
-      const en = {
-        app: 'NodeWarden',
-  tag: 'Minimal Bitwarden-compatible server on Cloudflare Workers.',
-        intro: 'Create your first account to finish setup. Then use any official Bitwarden client to sign in.',
-        by: 'By',
-        setup: 'Setup',
-        nameLabel: 'Name',
-        emailLabel: 'Email',
-        pwLabel: 'Master password',
-        pwHint: 'Choose a strong password you can remember. The server cannot recover it.',
-        pw2Label: 'Confirm password',
-        create: 'Create account',
-        creating: 'Creating…',
-        doneTitle: 'Setup complete',
-        doneDesc: 'Your server is ready. Configure your Bitwarden client with this server URL:',
-        important: 'Important',
-        limitations: 'Single user only: you cannot add new users. Changing the master password is not supported. If you forget it, redeploy and register again.',
-        hideTitle: 'Hide setup page',
-        hideDesc: 'After hiding, this setup page will return 404 for everyone. Your vault will keep working.',
-        hideBtn: 'Hide setup page',
-        hideWorking: 'Hiding…',
-        hideDone: 'Hidden. This page will now return 404.',
-        hideFailed: 'Failed to hide setup page',
-        hideConfirm: 'Hide the setup page? It will no longer be accessible, but your vault will keep working.',
-        errPwNotMatch: 'Passwords do not match',
-        errPwTooShort: 'Password must be at least 12 characters',
-        errGeneric: 'An error occurred: ',
-        errRegisterFailed: 'Registration failed',
-      };
-      return (isChinese() ? zh : en)[key];
-    }
-
-    function applyI18n() {
-      document.documentElement.lang = isChinese() ? 'zh-CN' : 'en';
-
-      document.getElementById('t_app').textContent = t('app');
-      document.getElementById('t_tag').textContent = t('tag');
-      document.getElementById('t_intro').textContent = t('intro');
-      document.getElementById('t_by').textContent = t('by');
-      document.getElementById('t_setup').textContent = t('setup');
-
-      document.getElementById('t_name_label').textContent = t('nameLabel');
-      document.getElementById('t_email_label').textContent = t('emailLabel');
-      document.getElementById('t_pw_label').textContent = t('pwLabel');
-      document.getElementById('t_pw_hint').textContent = t('pwHint');
-      document.getElementById('t_pw2_label').textContent = t('pw2Label');
-      document.getElementById('submitBtn').textContent = t('create');
-
-      document.getElementById('t_done_title').textContent = t('doneTitle');
-      document.getElementById('t_done_desc').textContent = t('doneDesc');
-      document.getElementById('t_important').textContent = t('important');
-      document.getElementById('t_limitations').textContent = t('limitations');
-      document.getElementById('t_hide_title').textContent = t('hideTitle');
-      document.getElementById('t_hide_desc').textContent = t('hideDesc');
-      document.getElementById('hideBtn').textContent = t('hideBtn');
-    }
-
-    async function checkStatus() {
-      try {
-        const res = await fetch('/setup/status');
-        const data = await res.json();
-        isRegistered = !!data.registered;
-        if (data.registered) {
-          showRegisteredView();
-        }
-      } catch (e) {
-        console.error('Failed to check status:', e);
-      }
-    }
-
-    function showRegisteredView() {
-      isRegistered = true;
-      document.getElementById('setup-form').style.display = 'none';
-      document.getElementById('registered-view').style.display = 'block';
-      document.getElementById('serverUrl').textContent = window.location.origin;
-      showMessage(t('doneTitle'), 'success');
-      const form = document.getElementById('form');
-      if (form) {
-        const fields = form.querySelectorAll('input, button');
-        fields.forEach((el) => {
-          el.disabled = true;
-        });
-      }
-    }
-
-    async function disableSetupPage() {
-      if (!isRegistered) return;
-      if (!confirm(t('hideConfirm'))) return;
-
-      const btn = document.getElementById('hideBtn');
-      if (btn) {
-        btn.disabled = true;
-        btn.textContent = t('hideWorking');
-      }
-
-      try {
-        const res = await fetch('/setup/disable', { method: 'POST' });
-        const data = await res.json();
-        if (res.ok && data.success) {
-          showMessage(t('hideDone'), 'success');
-          setTimeout(() => window.location.reload(), 600);
-          return;
-        }
-        showMessage(data.error || t('hideFailed'), 'error');
-      } catch (e) {
-        showMessage(t('hideFailed'), 'error');
-      }
-
-      if (btn) {
-        btn.disabled = false;
-        btn.textContent = t('hideBtn');
-      }
-    }
-
-    function showMessage(text, type) {
-      const msg = document.getElementById('message');
-      msg.textContent = text;
-      msg.className = 'message ' + type;
-    }
-
-    async function pbkdf2(password, salt, iterations, keyLen) {
-      const encoder = new TextEncoder();
-      const passwordBytes = (password instanceof Uint8Array)
-        ? password
-        : encoder.encode(password);
-      const saltBytes = (salt instanceof Uint8Array)
-        ? salt
-        : encoder.encode(salt);
-
-      const keyMaterial = await crypto.subtle.importKey(
-        'raw',
-        passwordBytes,
-        'PBKDF2',
-        false,
-        ['deriveBits']
-      );
-
-      const derivedBits = await crypto.subtle.deriveBits(
-        {
-          name: 'PBKDF2',
-          salt: saltBytes,
-          iterations: iterations,
-          hash: 'SHA-256'
-        },
-        keyMaterial,
-        keyLen * 8
-      );
-
-      return new Uint8Array(derivedBits);
-    }
-
-    async function hkdfExpand(prk, info, length) {
-      const encoder = new TextEncoder();
-      const key = await crypto.subtle.importKey(
-        'raw',
-        prk,
-        { name: 'HMAC', hash: 'SHA-256' },
-        false,
-        ['sign']
-      );
-
-      const infoBytes = encoder.encode(info);
-      const result = new Uint8Array(length);
-      let prev = new Uint8Array(0);
-      let offset = 0;
-      let counter = 1;
-
-      while (offset < length) {
-        const input = new Uint8Array(prev.length + infoBytes.length + 1);
-        input.set(prev);
-        input.set(infoBytes, prev.length);
-        input[input.length - 1] = counter;
-
-        const signature = await crypto.subtle.sign('HMAC', key, input);
-        prev = new Uint8Array(signature);
-
-        const toCopy = Math.min(prev.length, length - offset);
-        result.set(prev.slice(0, toCopy), offset);
-        offset += toCopy;
-        counter++;
-      }
-
-      return result;
-    }
-
-    function generateSymmetricKey() {
-      return crypto.getRandomValues(new Uint8Array(64));
-    }
-
-    async function encryptAesCbc(data, key, iv) {
-      const cryptoKey = await crypto.subtle.importKey(
-        'raw',
-        key,
-        { name: 'AES-CBC' },
-        false,
-        ['encrypt']
-      );
-
-      const encrypted = await crypto.subtle.encrypt(
-        { name: 'AES-CBC', iv: iv },
-        cryptoKey,
-        data
-      );
-
-      return new Uint8Array(encrypted);
-    }
-
-    async function hmacSha256(key, data) {
-      const cryptoKey = await crypto.subtle.importKey(
-        'raw',
-        key,
-        { name: 'HMAC', hash: 'SHA-256' },
-        false,
-        ['sign']
-      );
-
-      const signature = await crypto.subtle.sign('HMAC', cryptoKey, data);
-      return new Uint8Array(signature);
-    }
-
-    function base64Encode(bytes) {
-      return btoa(String.fromCharCode.apply(null, bytes));
-    }
-
-    async function encryptToBitwardenFormat(data, encKey, macKey) {
-      const iv = crypto.getRandomValues(new Uint8Array(16));
-      const encrypted = await encryptAesCbc(data, encKey, iv);
-
-      const macData = new Uint8Array(iv.length + encrypted.length);
-      macData.set(iv);
-      macData.set(encrypted, iv.length);
-      const mac = await hmacSha256(macKey, macData);
-
-      return '2.' + base64Encode(iv) + '|' + base64Encode(encrypted) + '|' + base64Encode(mac);
-    }
-
-    async function generateRsaKeyPair() {
-      const keyPair = await crypto.subtle.generateKey(
-        {
-          name: 'RSA-OAEP',
-          modulusLength: 2048,
-          publicExponent: new Uint8Array([1, 0, 1]),
-          hash: 'SHA-1'
-        },
-        true,
-        ['encrypt', 'decrypt']
-      );
-
-      const publicKeySpki = await crypto.subtle.exportKey('spki', keyPair.publicKey);
-      const publicKeyB64 = base64Encode(new Uint8Array(publicKeySpki));
-
-      const privateKeyPkcs8 = await crypto.subtle.exportKey('pkcs8', keyPair.privateKey);
-      const privateKeyBytes = new Uint8Array(privateKeyPkcs8);
-
-      return {
-        publicKey: publicKeyB64,
-        privateKey: privateKeyBytes
-      };
-    }
-
-    async function handleSubmit(event) {
-      event.preventDefault();
-
-      if (isRegistered) {
-        showMessage(t('doneTitle'), 'success');
-        return;
-      }
-
-      const name = document.getElementById('name').value;
-      const email = document.getElementById('email').value.toLowerCase();
-      const password = document.getElementById('password').value;
-      const confirmPassword = document.getElementById('confirmPassword').value;
-
-      if (password !== confirmPassword) {
-        showMessage(t('errPwNotMatch'), 'error');
-        return;
-      }
-
-      if (password.length < 12) {
-        showMessage(t('errPwTooShort'), 'error');
-        return;
-      }
-
-      const btn = document.getElementById('submitBtn');
-      btn.disabled = true;
-      btn.textContent = t('creating');
-
-      try {
-        const iterations = 600000;
-        const masterKey = await pbkdf2(password, email, iterations, 32);
-
-        const masterPasswordHash = await pbkdf2(masterKey, password, 1, 32);
-        const masterPasswordHashB64 = base64Encode(masterPasswordHash);
-
-        const stretchedKey = await hkdfExpand(masterKey, 'enc', 32);
-        const stretchedMacKey = await hkdfExpand(masterKey, 'mac', 32);
-
-        const symmetricKey = generateSymmetricKey();
-
-        const encryptedKey = await encryptToBitwardenFormat(symmetricKey, stretchedKey, stretchedMacKey);
-
-        const rsaKeys = await generateRsaKeyPair();
-
-        const encryptedPrivateKey = await encryptToBitwardenFormat(rsaKeys.privateKey, symmetricKey.slice(0, 32), symmetricKey.slice(32, 64));
-
-        const response = await fetch('/api/accounts/register', {
-          method: 'POST',
-          headers: {
-            'Content-Type': 'application/json'
-          },
-          body: JSON.stringify({
-            email: email,
-            name: name,
-            masterPasswordHash: masterPasswordHashB64,
-            key: encryptedKey,
-            kdf: 0,
-            kdfIterations: iterations,
-            keys: {
-              publicKey: rsaKeys.publicKey,
-              encryptedPrivateKey: encryptedPrivateKey
-            }
-          })
-        });
-
-        const result = await response.json();
-
-        if (response.ok && result.success) {
-          showRegisteredView();
-        } else {
-          showMessage(result.error || result.ErrorModel?.Message || t('errRegisterFailed'), 'error');
-          btn.disabled = false;
-          btn.textContent = t('create');
-        }
-      } catch (error) {
-        console.error('Registration error:', error);
-        showMessage(t('errGeneric') + (error && error.message ? error.message : String(error)), 'error');
-        btn.disabled = false;
-        btn.textContent = t('create');
-      }
-    }
-
-    applyI18n();
-    checkStatus();
-  </script>
-</body>
-</html>`;
-
-export async function handleRegisterPage(request: Request, env: Env): Promise<Response> {
-  const storage = new StorageService(env.DB);
-  const disabled = await storage.isSetupDisabled();
-  if (disabled) {
-    return new Response(null, { status: 404 });
-  }
-  return htmlResponse(registerPageHTML);
-}

src/handlers/sync.ts

@@ -1,21 +1,95 @@
 import { Env, SyncResponse, CipherResponse, FolderResponse, ProfileResponse } from '../types';
 import { StorageService } from '../services/storage';
-import { jsonResponse, errorResponse } from '../utils/response';
-import { cipherToResponse } from './ciphers';
+import { errorResponse } from '../utils/response';
+import { cipherToResponse, isCipherResponseSyncCompatible, shouldPreserveRepairableCipherUris } from './ciphers';
+import { sendToResponse } from './sends';
+import { LIMITS } from '../config/limits';
+import {
+  buildAccountKeys,
+  buildUserDecryptionCompat,
+  buildUserDecryptionOptions,
+} from '../utils/user-decryption';
+import { buildDomainsResponse } from '../services/domain-rules';
+import { buildWebAuthnPrfOption } from '../utils/account-passkeys';
+
+// CONTRACT:
+// /api/sync reuses cipherToResponse() as the single cipher response shaper.
+// Filtering invalid cipher responses here protects clients from stored rows that
+// would otherwise make official apps fail after an HTTP 200 sync.
+// Keep this aligned with src/handlers/ciphers.ts when adding new vault fields.
+function buildSyncCacheRequest(
+  request: Request,
+  userId: string,
+  revisionDate: string,
+  accountPasskeyCacheTag: string,
+  excludeDomains: boolean,
+  excludeSends: boolean,
+  preserveRepairableUris: boolean
+): Request {
+  const url = new URL(request.url);
+  const cacheUrl = new URL(
+    `/__nodewarden/cache/sync/${encodeURIComponent(userId)}/${encodeURIComponent(revisionDate)}/${encodeURIComponent(accountPasskeyCacheTag)}/${excludeDomains ? '1' : '0'}/${excludeSends ? '1' : '0'}/${preserveRepairableUris ? '1' : '0'}`,
+    url.origin
+  );
+  return new Request(cacheUrl.toString(), { method: 'GET' });
+}
+
+async function readSyncCache(cacheRequest: Request): Promise<Response | null> {
+  const hit = await caches.default.match(cacheRequest);
+  if (!hit) return null;
+  return new Response(hit.body, hit);
+}
+
+async function writeSyncCache(cacheRequest: Request, response: Response): Promise<void> {
+  await caches.default.put(cacheRequest, response.clone());
+}
 
 // GET /api/sync
 export async function handleSync(request: Request, env: Env, userId: string): Promise<Response> {
   const storage = new StorageService(env.DB);
-  
+  const url = new URL(request.url);
+  const excludeDomainsParam = url.searchParams.get('excludeDomains');
+  const excludeDomains = excludeDomainsParam !== null && /^(1|true|yes)$/i.test(excludeDomainsParam);
+  const excludeSendsParam = url.searchParams.get('excludeSends');
+  const excludeSends = excludeSendsParam !== null && /^(1|true|yes)$/i.test(excludeSendsParam);
+  const preserveRepairableUris = shouldPreserveRepairableCipherUris(request);
+
   const user = await storage.getUserById(userId);
   if (!user) {
     return errorResponse('User not found', 404);
   }
 
-  const ciphers = await storage.getAllCiphers(userId);
-  const folders = await storage.getAllFolders(userId);
+  const [revisionDate, accountPasskeys] = await Promise.all([
+    storage.getRevisionDate(userId),
+    storage.getAccountPasskeyCredentialsByUserId(userId),
+  ]);
+  const accountPasskeyCacheTag = accountPasskeys
+    .map((credential) => [
+      credential.id,
+      credential.updatedAt,
+      credential.supportsPrf ? '1' : '0',
+      credential.encryptedUserKey && credential.encryptedPublicKey && credential.encryptedPrivateKey ? '1' : '0',
+    ].join(':'))
+    .join(',');
+  const cacheRequest = buildSyncCacheRequest(request, userId, revisionDate, accountPasskeyCacheTag, excludeDomains, excludeSends, preserveRepairableUris);
+  const cachedResponse = await readSyncCache(cacheRequest);
+  if (cachedResponse) {
+    return cachedResponse;
+  }
+
+  const [ciphers, folders, sends, attachmentsByCipher, domainSettings] = await Promise.all([
+    storage.getAllCiphers(userId),
+    storage.getAllFolders(userId),
+    excludeSends ? Promise.resolve([]) : storage.getAllSends(userId),
+    storage.getAttachmentsByUserId(userId),
+    excludeDomains ? Promise.resolve(null) : storage.getUserDomainSettings(userId),
+  ]);
+  const accountKeys = buildAccountKeys(user);
+  const webAuthnPrfOptions = accountPasskeys
+    .map(buildWebAuthnPrfOption)
+    .filter((option): option is NonNullable<typeof option> => !!option);
+  const userDecryptionOptions = buildUserDecryptionOptions(user, webAuthnPrfOptions[0] || null);
 
-  // Build profile response
   const profile: ProfileResponse = {
     id: user.id,
     name: user.name,
@@ -24,12 +98,12 @@ export async function handleSync(request: Request, env: Env, userId: string): Pr
     premium: true,
     premiumFromOrganization: false,
     usesKeyConnector: false,
-    masterPasswordHint: null,
+    masterPasswordHint: user.masterPasswordHint,
     culture: 'en-US',
-    twoFactorEnabled: false,
+    twoFactorEnabled: !!user.totpSecret,
     key: user.key,
     privateKey: user.privateKey,
-    accountKeys: null,
+    accountKeys,
     securityStamp: user.securityStamp || user.id,
     organizations: [],
     providers: [],
@@ -37,69 +111,65 @@ export async function handleSync(request: Request, env: Env, userId: string): Pr
     forcePasswordReset: false,
     avatarColor: null,
     creationDate: user.createdAt,
+    verifyDevices: user.verifyDevices,
     object: 'profile',
   };
 
-  // Build cipher responses with attachments
   const cipherResponses: CipherResponse[] = [];
   for (const cipher of ciphers) {
-    const attachments = await storage.getAttachmentsByCipher(cipher.id);
-    cipherResponses.push(cipherToResponse(cipher, attachments));
+    const response = cipherToResponse(cipher, attachmentsByCipher.get(cipher.id) || [], { preserveRepairableUris });
+    if (isCipherResponseSyncCompatible(response)) {
+      cipherResponses.push(response);
+    }
   }
 
-  // Build folder responses
-  const folderResponses: FolderResponse[] = folders.map(folder => ({
-    id: folder.id,
-    name: folder.name,
-    revisionDate: folder.updatedAt,
-    object: 'folder',
-  }));
+  const folderResponses: FolderResponse[] = [];
+  for (const folder of folders) {
+    folderResponses.push({
+      id: folder.id,
+      name: folder.name,
+      revisionDate: folder.updatedAt,
+      creationDate: folder.createdAt,
+      object: 'folder',
+    });
+  }
 
+  const sendResponses = sends.map(sendToResponse);
   const syncResponse: SyncResponse = {
-    profile: profile,
+    profile,
     folders: folderResponses,
     collections: [],
     ciphers: cipherResponses,
-    domains: {
-      equivalentDomains: [],
-      globalEquivalentDomains: [],
-      object: 'domains',
-    },
+    domains: excludeDomains
+      ? null
+      : buildDomainsResponse(
+          domainSettings?.equivalentDomains || [],
+          domainSettings?.customEquivalentDomains || [],
+          domainSettings?.excludedGlobalEquivalentDomains || [],
+          { omitExcludedGlobals: true }
+        ),
     policies: [],
-    sends: [],
-    // PascalCase for desktop/browser clients
-    UserDecryptionOptions: {
-      HasMasterPassword: true,
-      Object: 'userDecryptionOptions',
-      MasterPasswordUnlock: {
-        Kdf: {
-          KdfType: user.kdfType,
-          Iterations: user.kdfIterations,
-          Memory: user.kdfMemory || null,
-          Parallelism: user.kdfParallelism || null,
-        },
-        MasterKeyEncryptedUserKey: user.key,
-        MasterKeyWrappedUserKey: user.key,
-        Salt: user.email,
-        Object: 'masterPasswordUnlock',
-      },
-    },
-    // camelCase for Android client (SyncResponseJson uses @SerialName("userDecryption"))
-    userDecryption: {
-      masterPasswordUnlock: {
-        kdf: {
-          kdfType: user.kdfType,
-          iterations: user.kdfIterations,
-          memory: user.kdfMemory || null,
-          parallelism: user.kdfParallelism || null,
-        },
-        masterKeyWrappedUserKey: user.key,
-        masterKeyEncryptedUserKey: user.key,
-        salt: user.email,
-      },
+    sends: sendResponses,
+    UserDecryption: {
+      MasterPasswordUnlock: userDecryptionOptions.MasterPasswordUnlock,
+      TrustedDeviceOption: null,
+      KeyConnectorOption: null,
+      WebAuthnPrfOption: webAuthnPrfOptions[0] || null,
+      WebAuthnPrfOptions: webAuthnPrfOptions,
+      Object: 'userDecryption',
     },
+    UserDecryptionOptions: userDecryptionOptions,
+    userDecryption: buildUserDecryptionCompat(user) as SyncResponse['userDecryption'],
     object: 'sync',
   };
 
-  return jsonResponse(syncResponse);
+  const response = new Response(JSON.stringify(syncResponse), {
+    status: 200,
+    headers: {
+      'Content-Type': 'application/json',
+      'Cache-Control': `private, max-age=${Math.max(1, Math.floor(LIMITS.cache.syncResponseTtlMs / 1000))}`,
+    },
+  });
+  await writeSyncCache(cacheRequest, response);
+  return response;
 }

src/index.ts

@@ -1,26 +1,131 @@
 import { Env } from './types';
+import { NotificationsHub } from './durable/notifications-hub';
+import { BackupTransferRunner } from './durable/backup-transfer-runner';
 import { handleRequest } from './router';
 import { StorageService } from './services/storage';
+import { applyCors, jsonResponse } from './utils/response';
+import { runScheduledBackupIfDue } from './handlers/backup';
 
-// Per-isolate flag. Each Worker isolate may have its own copy of this flag,
-// but initializeDatabase() is idempotent (uses CREATE TABLE IF NOT EXISTS),
-// so redundant calls are harmless and fast (single SELECT check).
 let dbInitialized = false;
+let dbInitError: string | null = null;
+let dbInitPromise: Promise<void> | null = null;
+
+function normalizeRequestUrl(request: Request): Request {
+  const url = new URL(request.url);
+  const normalizedPathname = url.pathname.length <= 1 ? url.pathname : url.pathname.replace(/\/+$/, '');
+  if (normalizedPathname === url.pathname) return request;
+
+  url.pathname = normalizedPathname;
+  return new Request(url.toString(), request);
+}
+
+function isWorkerHandledPath(path: string): boolean {
+  return (
+    path.startsWith('/api/') ||
+    path.startsWith('/identity/') ||
+    path.startsWith('/icons/') ||
+    path.startsWith('/notifications/') ||
+    path.startsWith('/.well-known/') ||
+    path === '/config' ||
+    path === '/api/config' ||
+    path === '/api/version'
+  );
+}
+
+function addSearchIndexHeaders(request: Request, response: Response): Response {
+  const url = new URL(request.url);
+  const contentType = String(response.headers.get('Content-Type') || '').toLowerCase();
+  const shouldNoIndex =
+    url.pathname === '/robots.txt' ||
+    contentType.includes('text/html');
+
+  if (!shouldNoIndex) return response;
+
+  const headers = new Headers(response.headers);
+  headers.set('X-Robots-Tag', 'noindex, nofollow, noarchive, nosnippet');
+
+  return new Response(response.body, {
+    status: response.status,
+    statusText: response.statusText,
+    headers,
+  });
+}
+
+async function maybeServeAsset(request: Request, env: Env): Promise<Response | null> {
+  if (!env.ASSETS) return null;
+  if (request.method !== 'GET' && request.method !== 'HEAD') return null;
+  const url = new URL(request.url);
+  if (isWorkerHandledPath(url.pathname)) return null;
+
+  const response = await env.ASSETS.fetch(request);
+  return addSearchIndexHeaders(request, response);
+}
+
+async function ensureDatabaseInitialized(env: Env): Promise<void> {
+  if (dbInitialized) return;
+
+  if (!dbInitPromise) {
+    dbInitPromise = (async () => {
+      const storage = new StorageService(env.DB);
+      await storage.initializeDatabase();
+      dbInitialized = true;
+      dbInitError = null;
+    })()
+      .catch((error: unknown) => {
+        console.error('Failed to initialize database:', error);
+        dbInitError = error instanceof Error ? error.message : 'Unknown database initialization error';
+      })
+      .finally(() => {
+        dbInitPromise = null;
+      });
+  }
+
+  await dbInitPromise;
+}
 
 export default {
   async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
-    // Auto-initialize database on first request
-    if (!dbInitialized) {
-      try {
-        const storage = new StorageService(env.DB);
-        await storage.initializeDatabase();
-        dbInitialized = true;
-      } catch (error) {
-        console.error('Failed to initialize database:', error);
-        // Continue anyway - the error will surface when actual DB operations are attempted
-      }
+    void ctx;
+    const normalizedRequest = normalizeRequestUrl(request);
+    const assetResponse = await maybeServeAsset(normalizedRequest, env);
+    if (assetResponse) {
+      return applyCors(normalizedRequest, assetResponse);
     }
 
-    return handleRequest(request, env);
+    await ensureDatabaseInitialized(env);
+    if (dbInitError) {
+      // Log full error server-side, return generic message to client.
+      console.error('DB init error (not forwarded to client):', dbInitError);
+      const resp = jsonResponse(
+        {
+          error: 'Database not initialized',
+          error_description: 'Database initialization failed. Check server logs for details.',
+          ErrorModel: {
+            Message: 'Service temporarily unavailable',
+            Object: 'error',
+          },
+        },
+        500
+      );
+      return applyCors(normalizedRequest, resp);
+    }
+
+    const resp = await handleRequest(normalizedRequest, env);
+    return applyCors(normalizedRequest, resp);
+  },
+
+  async scheduled(controller: ScheduledController, env: Env, ctx: ExecutionContext): Promise<void> {
+    void controller;
+    await ensureDatabaseInitialized(env);
+    if (dbInitError) {
+      console.error('Skipping scheduled backup because DB init failed:', dbInitError);
+      return;
+    }
+    ctx.waitUntil(runScheduledBackupIfDue(env).catch((error) => {
+      console.error('Scheduled backup failed:', error);
+    }));
   },
 };
+
+export { NotificationsHub };
+export { BackupTransferRunner };

src/router-admin-backup.ts

@@ -0,0 +1,74 @@
+import type { Env, User } from './types';
+import {
+  handleAdminExportBackup,
+  handleDownloadAdminRemoteBackup,
+  handleDeleteAdminRemoteBackup,
+  handleDownloadAdminBackupAttachment,
+  handleGetAdminBackupSettings,
+  handleGetAdminBackupSettingsRepairState,
+  handleInspectAdminRemoteBackup,
+  handleAdminImportBackup,
+  handleListAdminRemoteBackups,
+  handleRepairAdminBackupSettings,
+  handleRestoreAdminRemoteBackup,
+  handleRunAdminConfiguredBackup,
+  handleUpdateAdminBackupSettings,
+} from './handlers/backup';
+
+export async function handleAdminBackupRoute(
+  request: Request,
+  env: Env,
+  actorUser: User,
+  path: string,
+  method: string
+): Promise<Response | null> {
+  if (path === '/api/admin/backup/export' && method === 'POST') {
+    return handleAdminExportBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/blob' && method === 'GET') {
+    return handleDownloadAdminBackupAttachment(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/settings') {
+    if (method === 'GET') return handleGetAdminBackupSettings(request, env, actorUser);
+    if (method === 'PUT') return handleUpdateAdminBackupSettings(request, env, actorUser);
+    return null;
+  }
+
+  if (path === '/api/admin/backup/settings/repair') {
+    if (method === 'GET') return handleGetAdminBackupSettingsRepairState(request, env, actorUser);
+    if (method === 'POST') return handleRepairAdminBackupSettings(request, env, actorUser);
+    return null;
+  }
+
+  if (path === '/api/admin/backup/run' && method === 'POST') {
+    return handleRunAdminConfiguredBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/remote' && method === 'GET') {
+    return handleListAdminRemoteBackups(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/remote/download' && method === 'GET') {
+    return handleDownloadAdminRemoteBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/remote/integrity' && method === 'GET') {
+    return handleInspectAdminRemoteBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/remote/file' && method === 'DELETE') {
+    return handleDeleteAdminRemoteBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/remote/restore' && method === 'POST') {
+    return handleRestoreAdminRemoteBackup(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/backup/import' && method === 'POST') {
+    return handleAdminImportBackup(request, env, actorUser);
+  }
+
+  return null;
+}

src/router-admin.ts

@@ -0,0 +1,69 @@
+import type { Env, User } from './types';
+import {
+  handleAdminListUsers,
+  handleAdminCreateInvite,
+  handleAdminListInvites,
+  handleAdminDeleteAllInvites,
+  handleAdminRevokeInvite,
+  handleAdminSetUserStatus,
+  handleAdminDeleteUser,
+  handleAdminListAuditLogs,
+  handleAdminGetAuditLogSettings,
+  handleAdminUpdateAuditLogSettings,
+  handleAdminClearAuditLogs,
+} from './handlers/admin';
+import { handleAdminBackupRoute } from './router-admin-backup';
+
+export async function handleAdminRoute(
+  request: Request,
+  env: Env,
+  actorUser: User,
+  path: string,
+  method: string
+): Promise<Response | null> {
+  if (path === '/api/admin/users' && method === 'GET') {
+    return handleAdminListUsers(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/logs' && method === 'GET') {
+    return handleAdminListAuditLogs(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/logs' && method === 'DELETE') {
+    return handleAdminClearAuditLogs(request, env, actorUser);
+  }
+
+  if (path === '/api/admin/logs/settings') {
+    if (method === 'GET') return handleAdminGetAuditLogSettings(request, env, actorUser);
+    if (method === 'PUT' || method === 'POST') return handleAdminUpdateAuditLogSettings(request, env, actorUser);
+    return null;
+  }
+
+  const adminBackupResponse = await handleAdminBackupRoute(request, env, actorUser, path, method);
+  if (adminBackupResponse) return adminBackupResponse;
+
+  if (path === '/api/admin/invites') {
+    if (method === 'GET') return handleAdminListInvites(request, env, actorUser);
+    if (method === 'POST') return handleAdminCreateInvite(request, env, actorUser);
+    if (method === 'DELETE') return handleAdminDeleteAllInvites(request, env, actorUser);
+    return null;
+  }
+
+  const adminInviteMatch = path.match(/^\/api\/admin\/invites\/([^/]+)$/i);
+  if (adminInviteMatch && method === 'DELETE') {
+    const inviteCode = decodeURIComponent(adminInviteMatch[1]);
+    return handleAdminRevokeInvite(request, env, actorUser, inviteCode);
+  }
+
+  const adminUserStatusMatch = path.match(/^\/api\/admin\/users\/([a-f0-9-]+)\/status$/i);
+  if (adminUserStatusMatch && (method === 'PUT' || method === 'POST')) {
+    return handleAdminSetUserStatus(request, env, actorUser, adminUserStatusMatch[1]);
+  }
+
+  const adminUserDeleteMatch = path.match(/^\/api\/admin\/users\/([a-f0-9-]+)$/i);
+  if (adminUserDeleteMatch && method === 'DELETE') {
+    return handleAdminDeleteUser(request, env, actorUser, adminUserDeleteMatch[1]);
+  }
+
+  return null;
+}

src/router-authenticated.ts

@@ -0,0 +1,344 @@
+import type { Env, User } from './types';
+import { errorResponse, jsonResponse } from './utils/response';
+import {
+  handleGetProfile,
+  handleUpdateProfile,
+  handleSetKeys,
+  handleGetRevisionDate,
+  handleVerifyPassword,
+  handleChangePassword,
+  handleSetVerifyDevices,
+  handleGetTotpStatus,
+  handleSetTotpStatus,
+  handleGetTotpRecoveryCode,
+  handleGetApiKey,
+  handleRotateApiKey,
+} from './handlers/accounts';
+import {
+  handleGetCiphers,
+  handleGetCipher,
+  handleCreateCipher,
+  handleUpdateCipher,
+  handleDeleteCipher,
+  handleDeleteCipherCompat,
+  handlePermanentDeleteCipher,
+  handleRestoreCipher,
+  handleBulkArchiveCiphers,
+  handlePartialUpdateCipher,
+  handleBulkUnarchiveCiphers,
+  handleBulkMoveCiphers,
+  handleBulkDeleteCiphers,
+  handleBulkPermanentDeleteCiphers,
+  handleBulkRestoreCiphers,
+  handleArchiveCipher,
+  handleUnarchiveCipher,
+} from './handlers/ciphers';
+import {
+  handleGetFolders,
+  handleGetFolder,
+  handleCreateFolder,
+  handleUpdateFolder,
+  handleDeleteFolder,
+  handleBulkDeleteFolders,
+} from './handlers/folders';
+import {
+  handleGetSends,
+  handleGetSend,
+  handleCreateSend,
+  handleCreateFileSendV2,
+  handleGetSendFileUpload,
+  handleUploadSendFile,
+  handleUpdateSend,
+  handleDeleteSend,
+  handleBulkDeleteSends,
+  handleRemoveSendPassword,
+  handleRemoveSendAuth,
+} from './handlers/sends';
+import { handleSync } from './handlers/sync';
+import { handleCiphersImport } from './handlers/import';
+import {
+  handleCreateAttachment,
+  handleUploadAttachment,
+  handleGetAttachment,
+  handleUpdateAttachmentMetadata,
+  handleDeleteAttachment,
+} from './handlers/attachments';
+import { handleAuthenticatedDeviceRoute } from './router-devices';
+import { handleAdminRoute } from './router-admin';
+import { handleGetDomains, handleUpdateDomains } from './handlers/domains';
+import {
+  handleCreateAccountPasskeyCredential,
+  handleDeleteAccountPasskeyCredential,
+  handleGetAccountPasskeyAttestationOptions,
+  handleGetAccountPasskeyCredentials,
+  handleGetAccountPasskeyUpdateAssertionOptions,
+  handleUpdateAccountPasskeyEncryption,
+} from './handlers/account-passkeys';
+
+export async function handleAuthenticatedRoute(
+  request: Request,
+  env: Env,
+  userId: string,
+  currentUser: User,
+  path: string,
+  method: string
+): Promise<Response | null> {
+  if (method === 'POST' || method === 'PUT' || method === 'DELETE') {
+    const blockedAccountPaths = new Set([
+      '/api/accounts/set-password',
+      '/api/accounts/delete',
+      '/api/accounts/delete-account',
+      '/api/accounts/delete-vault',
+    ]);
+    if (blockedAccountPaths.has(path)) {
+      return errorResponse('Not implemented', 501);
+    }
+  }
+
+  if (path === '/api/accounts/profile') {
+    if (method === 'GET') return handleGetProfile(request, env, userId);
+    if (method === 'PUT') return handleUpdateProfile(request, env, userId);
+    return errorResponse('Method not allowed', 405);
+  }
+
+  if ((path === '/api/accounts/password' || path === '/api/accounts/change-password') && (method === 'POST' || method === 'PUT')) {
+    return handleChangePassword(request, env, userId);
+  }
+
+  if (path === '/api/accounts/keys' && method === 'POST') {
+    return handleSetKeys(request, env, userId);
+  }
+
+  if (path === '/api/accounts/totp') {
+    if (method === 'GET') return handleGetTotpStatus(request, env, userId);
+    if (method === 'PUT' || method === 'POST') return handleSetTotpStatus(request, env, userId);
+    return null;
+  }
+
+  if ((path === '/api/accounts/totp/recovery-code' || path === '/api/two-factor/get-recover') && method === 'POST') {
+    return handleGetTotpRecoveryCode(request, env, userId);
+  }
+
+  if (path === '/api/accounts/revision-date' && method === 'GET') {
+    return handleGetRevisionDate(request, env, userId);
+  }
+
+  if (path === '/api/accounts/verify-password' && method === 'POST') {
+    return handleVerifyPassword(request, env, userId);
+  }
+
+  if (path === '/api/accounts/verify-devices' && (method === 'PUT' || method === 'POST')) {
+    return handleSetVerifyDevices(request, env, userId);
+  }
+
+  if ((path === '/api/accounts/api-key' || path === '/api/accounts/api_key') && method === 'POST') {
+    return handleGetApiKey(request, env, userId);
+  }
+
+  if ((path === '/api/accounts/rotate-api-key' || path === '/api/accounts/rotate_api_key') && method === 'POST') {
+    return handleRotateApiKey(request, env, userId);
+  }
+
+  if (path === '/api/webauthn' || path === '/webauthn') {
+    if (method === 'GET') return handleGetAccountPasskeyCredentials(request, env, userId);
+    if (method === 'POST') return handleCreateAccountPasskeyCredential(request, env, userId);
+    if (method === 'PUT') return handleUpdateAccountPasskeyEncryption(request, env, userId);
+    return errorResponse('Method not allowed', 405);
+  }
+
+  if ((path === '/api/webauthn/attestation-options' || path === '/webauthn/attestation-options') && method === 'POST') {
+    return handleGetAccountPasskeyAttestationOptions(request, env, userId, currentUser);
+  }
+
+  if ((path === '/api/webauthn/assertion-options' || path === '/webauthn/assertion-options') && method === 'POST') {
+    return handleGetAccountPasskeyUpdateAssertionOptions(request, env, userId, currentUser);
+  }
+
+  const accountPasskeyDeleteMatch =
+    path.match(/^\/api\/webauthn\/([^/]+)\/delete$/i) ||
+    path.match(/^\/webauthn\/([^/]+)\/delete$/i);
+  if (accountPasskeyDeleteMatch && method === 'POST') {
+    return handleDeleteAccountPasskeyCredential(request, env, userId, accountPasskeyDeleteMatch[1], currentUser);
+  }
+
+  if (path === '/api/sync' && method === 'GET') {
+    return handleSync(request, env, userId);
+  }
+
+  if (path.startsWith('/notifications/')) {
+    return errorResponse('Not found', 404);
+  }
+
+  if (path === '/api/ciphers' || path === '/api/ciphers/create') {
+    if (method === 'GET') return handleGetCiphers(request, env, userId);
+    if (method === 'POST') return handleCreateCipher(request, env, userId);
+    return null;
+  }
+
+  if (path === '/api/ciphers/import' && method === 'POST') {
+    return handleCiphersImport(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/delete' && method === 'POST') {
+    return handleBulkDeleteCiphers(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/delete-permanent' && method === 'POST') {
+    return handleBulkPermanentDeleteCiphers(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/restore' && method === 'POST') {
+    return handleBulkRestoreCiphers(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/archive' && (method === 'PUT' || method === 'POST')) {
+    return handleBulkArchiveCiphers(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/unarchive' && (method === 'PUT' || method === 'POST')) {
+    return handleBulkUnarchiveCiphers(request, env, userId);
+  }
+
+  if (path === '/api/ciphers/move' && (method === 'POST' || method === 'PUT')) {
+    return handleBulkMoveCiphers(request, env, userId);
+  }
+
+  const cipherMatch = path.match(/^\/api\/ciphers\/([a-f0-9-]+)(\/.*)?$/i);
+  if (cipherMatch) {
+    const cipherId = cipherMatch[1];
+    const subPath = cipherMatch[2] || '';
+
+    if (subPath === '' || subPath === '/') {
+      if (method === 'GET') return handleGetCipher(request, env, userId, cipherId);
+      if (method === 'PUT' || method === 'POST') return handleUpdateCipher(request, env, userId, cipherId);
+      if (method === 'DELETE') return handleDeleteCipherCompat(request, env, userId, cipherId);
+    }
+
+    if (subPath === '/delete' && method === 'PUT') return handleDeleteCipher(request, env, userId, cipherId);
+    if (subPath === '/delete' && method === 'DELETE') return handlePermanentDeleteCipher(request, env, userId, cipherId);
+    if (subPath === '/restore' && method === 'PUT') return handleRestoreCipher(request, env, userId, cipherId);
+    if (subPath === '/archive' && (method === 'PUT' || method === 'POST')) return handleArchiveCipher(request, env, userId, cipherId);
+    if (subPath === '/unarchive' && (method === 'PUT' || method === 'POST')) return handleUnarchiveCipher(request, env, userId, cipherId);
+    if (subPath === '/partial' && (method === 'PUT' || method === 'POST')) return handlePartialUpdateCipher(request, env, userId, cipherId);
+    if (subPath === '/share' && method === 'POST') return handleGetCipher(request, env, userId, cipherId);
+    if (subPath === '/details' && method === 'GET') return handleGetCipher(request, env, userId, cipherId);
+    if (subPath === '/attachment/v2' && method === 'POST') return handleCreateAttachment(request, env, userId, cipherId);
+    if (subPath === '/attachment' && method === 'POST') return handleCreateAttachment(request, env, userId, cipherId);
+
+    const attachmentMatch = subPath.match(/^\/attachment\/([a-f0-9-]+)$/i);
+    if (attachmentMatch) {
+      const attachmentId = attachmentMatch[1];
+      if (method === 'POST' || method === 'PUT') return handleUploadAttachment(request, env, userId, cipherId, attachmentId);
+      if (method === 'GET') return handleGetAttachment(request, env, userId, cipherId, attachmentId);
+      if (method === 'DELETE') return handleDeleteAttachment(request, env, userId, cipherId, attachmentId);
+    }
+
+    const attachmentMetadataMatch = subPath.match(/^\/attachment\/([a-f0-9-]+)\/metadata$/i);
+    if (attachmentMetadataMatch && (method === 'POST' || method === 'PUT')) {
+      return handleUpdateAttachmentMetadata(request, env, userId, cipherId, attachmentMetadataMatch[1]);
+    }
+
+    const attachmentDeleteMatch = subPath.match(/^\/attachment\/([a-f0-9-]+)\/delete$/i);
+    if (attachmentDeleteMatch && method === 'POST') {
+      return handleDeleteAttachment(request, env, userId, cipherId, attachmentDeleteMatch[1]);
+    }
+  }
+
+  if (path === '/api/folders') {
+    if (method === 'GET') return handleGetFolders(request, env, userId);
+    if (method === 'POST') return handleCreateFolder(request, env, userId);
+    return null;
+  }
+
+  if (path === '/api/folders/delete' && method === 'POST') {
+    return handleBulkDeleteFolders(request, env, userId);
+  }
+
+  const folderMatch = path.match(/^\/api\/folders\/([a-f0-9-]+)$/i);
+  if (folderMatch) {
+    const folderId = folderMatch[1];
+    if (method === 'GET') return handleGetFolder(request, env, userId, folderId);
+    if (method === 'PUT') return handleUpdateFolder(request, env, userId, folderId);
+    if (method === 'DELETE') return handleDeleteFolder(request, env, userId, folderId);
+  }
+
+  if (path.startsWith('/api/auth-requests')) {
+    return jsonResponse({ data: [], object: 'list', continuationToken: null });
+  }
+
+  if (path === '/api/collections' || path.startsWith('/api/collections/')) {
+    if (method === 'GET') {
+      return jsonResponse({ data: [], object: 'list', continuationToken: null });
+    }
+    return null;
+  }
+
+  if (path === '/api/organizations' || path.startsWith('/api/organizations/')) {
+    if (method === 'GET') {
+      return jsonResponse({ data: [], object: 'list', continuationToken: null });
+    }
+    return null;
+  }
+
+  if (path === '/api/sends') {
+    if (method === 'GET') return handleGetSends(request, env, userId);
+    if (method === 'POST') return handleCreateSend(request, env, userId);
+    return null;
+  }
+
+  if (path === '/api/sends/file/v2' && method === 'POST') {
+    return handleCreateFileSendV2(request, env, userId);
+  }
+
+  if (path === '/api/sends/delete' && method === 'POST') {
+    return handleBulkDeleteSends(request, env, userId);
+  }
+
+  const sendMatch = path.match(/^\/api\/sends\/([^/]+)(\/.*)?$/i);
+  if (sendMatch) {
+    const sendId = sendMatch[1];
+    const subPath = sendMatch[2] || '';
+
+    if (subPath === '' || subPath === '/') {
+      if (method === 'GET') return handleGetSend(request, env, userId, sendId);
+      if (method === 'PUT') return handleUpdateSend(request, env, userId, sendId);
+      if (method === 'DELETE') return handleDeleteSend(request, env, userId, sendId);
+    }
+
+    if (subPath === '/remove-password' && (method === 'PUT' || method === 'POST')) {
+      return handleRemoveSendPassword(request, env, userId, sendId);
+    }
+
+    if (subPath === '/remove-auth' && (method === 'PUT' || method === 'POST')) {
+      return handleRemoveSendAuth(request, env, userId, sendId);
+    }
+
+    const sendFileUploadMatch = subPath.match(/^\/file\/([^/]+)\/?$/i);
+    if (sendFileUploadMatch) {
+      const fileId = sendFileUploadMatch[1];
+      if (method === 'GET') return handleGetSendFileUpload(request, env, userId, sendId, fileId);
+      if (method === 'POST' || method === 'PUT') return handleUploadSendFile(request, env, userId, sendId, fileId);
+    }
+  }
+
+  if (path === '/api/policies' || path.startsWith('/api/policies/')) {
+    if (method === 'GET') {
+      return jsonResponse({ data: [], object: 'list', continuationToken: null });
+    }
+    return null;
+  }
+
+  if (path === '/api/settings/domains' || path === '/settings/domains') {
+    if (method === 'GET') return handleGetDomains(env, userId);
+    if (method === 'PUT' || method === 'POST') return handleUpdateDomains(request, env, userId);
+    return null;
+  }
+
+  const authenticatedDeviceResponse = await handleAuthenticatedDeviceRoute(request, env, userId, path, method);
+  if (authenticatedDeviceResponse) return authenticatedDeviceResponse;
+
+  const adminResponse = await handleAdminRoute(request, env, currentUser, path, method);
+  if (adminResponse) return adminResponse;
+
+  return null;
+}

src/router-devices.ts

@@ -0,0 +1,121 @@
+import type { Env } from './types';
+import {
+  handleGetAuthorizedDevices,
+  handleGetDevice,
+  handleGetDevices,
+  handleGetDeviceByIdentifier,
+  handleUpdateDeviceKeys,
+  handleUpdateDeviceTrust,
+  handleUntrustDevices,
+  handleRetrieveDeviceKeys,
+  handleDeactivateDevice,
+  handleRevokeAllTrustedDevices,
+  handleRevokeTrustedDevice,
+  handleTrustDevicePermanently,
+  handleDeleteAllDevices,
+  handleDeleteDevice,
+  handleUpdateDeviceName,
+  handleUpdateDeviceToken,
+  handleUpdateDeviceWebPushAuth,
+  handleClearDeviceToken,
+} from './handlers/devices';
+
+export async function handleAuthenticatedDeviceRoute(
+  request: Request,
+  env: Env,
+  userId: string,
+  path: string,
+  method: string
+): Promise<Response | null> {
+  if (path === '/api/devices') {
+    if (method === 'GET') return handleGetDevices(request, env, userId);
+    if (method === 'DELETE') return handleDeleteAllDevices(request, env, userId);
+    return null;
+  }
+
+  if (path === '/api/devices/authorized') {
+    if (method === 'GET') return handleGetAuthorizedDevices(request, env, userId);
+    if (method === 'DELETE') return handleRevokeAllTrustedDevices(request, env, userId);
+    return null;
+  }
+
+  const authorizedDeviceMatch = path.match(/^\/api\/devices\/authorized\/([^/]+)$/i);
+  if (authorizedDeviceMatch && method === 'DELETE') {
+    const deviceIdentifier = decodeURIComponent(authorizedDeviceMatch[1]);
+    return handleRevokeTrustedDevice(request, env, userId, deviceIdentifier);
+  }
+
+  const permanentAuthorizedDeviceMatch = path.match(/^\/api\/devices\/authorized\/([^/]+)\/permanent$/i);
+  if (permanentAuthorizedDeviceMatch && method === 'POST') {
+    const deviceIdentifier = decodeURIComponent(permanentAuthorizedDeviceMatch[1]);
+    return handleTrustDevicePermanently(request, env, userId, deviceIdentifier);
+  }
+
+  const deleteDeviceMatch = path.match(/^\/api\/devices\/([^/]+)$/i);
+  if (deleteDeviceMatch && method === 'GET') {
+    const deviceIdentifier = decodeURIComponent(deleteDeviceMatch[1]);
+    return handleGetDevice(request, env, userId, deviceIdentifier);
+  }
+  if (deleteDeviceMatch && method === 'DELETE') {
+    const deviceIdentifier = decodeURIComponent(deleteDeviceMatch[1]);
+    return handleDeleteDevice(request, env, userId, deviceIdentifier);
+  }
+
+  const updateDeviceNameMatch = path.match(/^\/api\/devices\/([^/]+)\/name$/i);
+  if (updateDeviceNameMatch && method === 'PUT') {
+    const deviceIdentifier = decodeURIComponent(updateDeviceNameMatch[1]);
+    return handleUpdateDeviceName(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)$/i);
+  if (identifierMatch && method === 'GET') {
+    const deviceIdentifier = decodeURIComponent(identifierMatch[1]);
+    return handleGetDeviceByIdentifier(request, env, userId, deviceIdentifier);
+  }
+
+  const deviceKeysMatch = path.match(/^\/api\/devices\/([^/]+)\/keys$/i) || path.match(/^\/api\/devices\/identifier\/([^/]+)\/keys$/i);
+  if (deviceKeysMatch && (method === 'PUT' || method === 'POST')) {
+    const deviceIdentifier = decodeURIComponent(deviceKeysMatch[1]);
+    return handleUpdateDeviceKeys(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierTokenMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)\/token$/i);
+  if (identifierTokenMatch && (method === 'PUT' || method === 'POST')) {
+    const deviceIdentifier = decodeURIComponent(identifierTokenMatch[1]);
+    return handleUpdateDeviceToken(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierWebPushMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)\/web-push-auth$/i);
+  if (identifierWebPushMatch && (method === 'PUT' || method === 'POST')) {
+    const deviceIdentifier = decodeURIComponent(identifierWebPushMatch[1]);
+    return handleUpdateDeviceWebPushAuth(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierClearTokenMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)\/clear-token$/i);
+  if (identifierClearTokenMatch && (method === 'PUT' || method === 'POST')) {
+    const deviceIdentifier = decodeURIComponent(identifierClearTokenMatch[1]);
+    return handleClearDeviceToken(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierRetrieveKeysMatch = path.match(/^\/api\/devices\/([^/]+)\/retrieve-keys$/i);
+  if (identifierRetrieveKeysMatch && method === 'POST') {
+    const deviceIdentifier = decodeURIComponent(identifierRetrieveKeysMatch[1]);
+    return handleRetrieveDeviceKeys(request, env, userId, deviceIdentifier);
+  }
+
+  const identifierDeactivateMatch = path.match(/^\/api\/devices\/([^/]+)\/deactivate$/i);
+  if (identifierDeactivateMatch && (method === 'POST' || method === 'DELETE')) {
+    const deviceIdentifier = decodeURIComponent(identifierDeactivateMatch[1]);
+    return handleDeactivateDevice(request, env, userId, deviceIdentifier);
+  }
+
+  if (path === '/api/devices/update-trust' && method === 'POST') {
+    return handleUpdateDeviceTrust(request, env, userId);
+  }
+
+  if (path === '/api/devices/untrust' && method === 'POST') {
+    return handleUntrustDevices(request, env, userId);
+  }
+
+  return null;
+}

src/router-public.ts

@@ -0,0 +1,481 @@
+import { LIMITS } from './config/limits';
+import { DEFAULT_DEV_SECRET } from './types';
+import {
+  handleAccessSend,
+  handleAccessSendFile,
+  handleAccessSendV2,
+  handleAccessSendFileV2,
+  handleDownloadSendFile,
+} from './handlers/sends';
+import { handleKnownDevice } from './handlers/devices';
+import { handleToken, handlePrelogin, handleRevocation } from './handlers/identity';
+import { handleGetAccountPasskeyAssertionOptions } from './handlers/account-passkeys';
+import {
+  handleRegister,
+  handleGetPasswordHint,
+  handleRecoverTwoFactor,
+} from './handlers/accounts';
+import { handlePublicDownloadAttachment } from './handlers/attachments';
+import { handlePublicUploadAttachment } from './handlers/attachments';
+import {
+  handleNotificationsHub,
+  handleNotificationsNegotiate,
+} from './handlers/notifications';
+import { handlePublicUploadSendFile } from './handlers/sends';
+import { jsonResponse } from './utils/response';
+import { StorageService } from './services/storage';
+import type { Env } from './types';
+
+type PublicRateLimiter = (category?: string, maxRequests?: number) => Promise<Response | null>;
+type JwtUnsafeReason = 'missing' | 'default' | 'too_short' | null;
+
+export interface WebBootstrapResponse {
+  defaultKdfIterations: number;
+  jwtUnsafeReason: JwtUnsafeReason;
+  jwtSecretMinLength: number;
+  registrationInviteRequired: boolean;
+}
+
+function isSameOriginWriteRequest(request: Request): boolean {
+  const targetOrigin = new URL(request.url).origin;
+  const origin = request.headers.get('Origin');
+  if (origin) {
+    return origin === targetOrigin;
+  }
+
+  const referer = request.headers.get('Referer');
+  if (referer) {
+    try {
+      return new URL(referer).origin === targetOrigin;
+    } catch {
+      return false;
+    }
+  }
+
+  return false;
+}
+
+function getDefaultWebsiteIconSvg(): string {
+  return `<svg xmlns="http://www.w3.org/2000/svg" width="96" height="96" viewBox="0 0 96 96" role="img" aria-label="Globe icon"><circle cx="48" cy="48" r="34" fill="none" stroke="#8ea9c7" stroke-width="6"/><path d="M14 48h68M48 14c10 10 16 21.5 16 34s-6 24-16 34c-10-10-16-21.5-16-34s6-24 16-34zm-24 10c8 5 17 8 24 8s16-3 24-8m-48 48c8-5 17-8 24-8s16 3 24 8" fill="none" stroke="#8ea9c7" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/></svg>`;
+}
+
+function handleNwFavicon(): Response {
+  return new Response(getDefaultWebsiteIconSvg(), {
+    status: 200,
+    headers: {
+      'Content-Type': 'image/svg+xml; charset=utf-8',
+      'Cache-Control': `public, max-age=${LIMITS.cache.iconTtlSeconds}, immutable`,
+    },
+  });
+}
+
+function handleMissingWebsiteIcon(): Response {
+  return new Response(null, {
+    status: 404,
+    headers: {
+      'Cache-Control': 'public, max-age=300',
+    },
+  });
+}
+
+function buildIconServiceBase(origin: string): string {
+  return `${origin}/icons`;
+}
+
+function buildIconServiceTemplate(origin: string): string {
+  return `${buildIconServiceBase(origin)}/{}/icon.png`;
+}
+
+function buildIconServiceCsp(origin: string): string {
+  return `img-src 'self' data: ${origin}`;
+}
+
+function buildConfigResponse(origin: string) {
+  return {
+    version: LIMITS.compatibility.bitwardenServerVersion,
+    gitHash: 'nodewarden',
+    server: null,
+    environment: {
+      cloudRegion: 'self-hosted',
+      vault: origin,
+      api: origin + '/api',
+      identity: origin + '/identity',
+      notifications: origin + '/notifications',
+      icons: origin,
+      sso: '',
+      fillAssistRules: null,
+    },
+    push: {
+      pushTechnology: 0,
+      vapidPublicKey: null,
+    },
+    communication: null,
+    settings: {
+      disableUserRegistration: false,
+    },
+    _icon_service_url: buildIconServiceTemplate(origin),
+    _icon_service_csp: buildIconServiceCsp(origin),
+    featureStates: {
+      'cipher-key-encryption': LIMITS.compatibility.cipherKeyEncryptionFeatureEnabled,
+      'duo-redirect': true,
+      'email-verification': true,
+      'pm-19051-send-email-verification': false,
+      'pm-19148-innovation-archive': true,
+      'unauth-ui-refresh': true,
+      'web-push': false,
+    },
+    object: 'config',
+  };
+}
+
+function normalizeIconHost(rawHost: string): string | null {
+  let decoded: string;
+  try {
+    decoded = decodeURIComponent(String(rawHost || '').trim()).toLowerCase().replace(/\.+$/, '');
+  } catch {
+    return null;
+  }
+  if (!decoded || decoded.includes('/') || decoded.includes('\\')) return null;
+  try {
+    const parsed = new URL(`https://${decoded}`);
+    return parsed.hostname === decoded ? decoded : null;
+  } catch {
+    return null;
+  }
+}
+
+const ICON_UPSTREAM_TIMEOUT_MS = 2500;
+const ICON_MAX_BUFFER_BYTES = 256 * 1024;
+const BITWARDEN_DEFAULT_GLOBE_ICON_BYTES = 500;
+const BITWARDEN_DEFAULT_GLOBE_ICON_SHA256 = 'aaa64871332ad5b7d28fe8874efb19c2d9cc2f1e6de75d52b080b438225a0783';
+
+type IconSource = {
+  url: string;
+  rejectImage?: {
+    byteLength: number;
+    sha256: string;
+  };
+  headers?: HeadersInit;
+};
+
+async function fetchIconSource(source: { url: string; headers?: HeadersInit }): Promise<Response> {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), ICON_UPSTREAM_TIMEOUT_MS);
+  try {
+    return await fetch(source.url, {
+      headers: source.headers,
+      redirect: 'follow',
+      signal: controller.signal,
+      cf: {
+        cacheEverything: true,
+        cacheTtl: LIMITS.cache.iconTtlSeconds,
+      },
+    } as RequestInit & { cf: { cacheEverything: boolean; cacheTtl: number } });
+  } finally {
+    clearTimeout(timeout);
+  }
+}
+
+async function sha256Hex(bytes: ArrayBuffer): Promise<string> {
+  const digest = await crypto.subtle.digest('SHA-256', bytes);
+  return Array.from(new Uint8Array(digest), (byte) => byte.toString(16).padStart(2, '0')).join('');
+}
+
+function getPositiveContentLength(headers: Headers): number | null {
+  const raw = headers.get('Content-Length');
+  if (!raw) return null;
+  const value = Number(raw);
+  return Number.isFinite(value) && value > 0 ? value : null;
+}
+
+async function readIconBytes(response: Response, maxBytes: number): Promise<ArrayBuffer | null> {
+  if (!response.body) return null;
+  const reader = response.body.getReader();
+  const chunks: Uint8Array[] = [];
+  let totalBytes = 0;
+  let timedOut = false;
+  const timeout = setTimeout(() => {
+    timedOut = true;
+    void reader.cancel().catch(() => undefined);
+  }, ICON_UPSTREAM_TIMEOUT_MS);
+
+  try {
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      if (!value) continue;
+
+      totalBytes += value.byteLength;
+      if (totalBytes > maxBytes) {
+        await reader.cancel().catch(() => undefined);
+        return null;
+      }
+      chunks.push(value);
+    }
+  } catch {
+    return null;
+  } finally {
+    clearTimeout(timeout);
+  }
+
+  if (timedOut || totalBytes === 0) return null;
+
+  const output = new ArrayBuffer(totalBytes);
+  const bytes = new Uint8Array(output);
+  let offset = 0;
+  for (const chunk of chunks) {
+    bytes.set(chunk, offset);
+    offset += chunk.byteLength;
+  }
+  return output;
+}
+
+function iconResponse(body: BodyInit | null, contentType: string | null): Response {
+  return new Response(body, {
+    status: 200,
+    headers: {
+      'Content-Type': contentType || 'image/png',
+      'Cache-Control': `public, max-age=${LIMITS.cache.iconTtlSeconds}, immutable`,
+    },
+  });
+}
+
+async function handleWebsiteIcon(host: string, fallbackMode: 'default' | 'not-found' = 'default'): Promise<Response> {
+  const normalizedHost = normalizeIconHost(host);
+  if (!normalizedHost) return fallbackMode === 'not-found' ? handleMissingWebsiteIcon() : handleNwFavicon();
+
+  const encodedHost = encodeURIComponent(normalizedHost);
+  const requestHeaders = { 'User-Agent': 'NodeWarden/1.0' };
+  const upstreamSources: IconSource[] = [
+    {
+      url: `https://favicon.im/zh/${encodedHost}?larger=true&throw-error-on-404=true`,
+      headers: requestHeaders,
+    },
+    {
+      url: `https://icons.bitwarden.net/${encodedHost}/icon.png`,
+      rejectImage: {
+        byteLength: BITWARDEN_DEFAULT_GLOBE_ICON_BYTES,
+        sha256: BITWARDEN_DEFAULT_GLOBE_ICON_SHA256,
+      },
+      headers: requestHeaders,
+    },
+  ];
+
+  for (const source of upstreamSources) {
+    try {
+      const resp = await fetchIconSource(source);
+
+      if (!resp.ok) continue;
+      const contentType = String(resp.headers.get('Content-Type') || '').toLowerCase();
+      if (!contentType.startsWith('image/')) continue;
+
+      const contentLength = getPositiveContentLength(resp.headers);
+      if (contentLength !== null && contentLength > ICON_MAX_BUFFER_BYTES) continue;
+
+      const bytes = await readIconBytes(resp, ICON_MAX_BUFFER_BYTES);
+      if (!bytes) continue;
+      if (
+        source.rejectImage &&
+        bytes.byteLength === source.rejectImage.byteLength &&
+        (await sha256Hex(bytes)) === source.rejectImage.sha256
+      ) {
+        continue;
+      }
+
+      return iconResponse(bytes, resp.headers.get('Content-Type'));
+    } catch {
+      continue;
+    }
+  }
+
+  return fallbackMode === 'not-found' ? handleMissingWebsiteIcon() : handleNwFavicon();
+}
+
+export async function buildWebBootstrapResponse(env: Env): Promise<WebBootstrapResponse> {
+  const secret = (env.JWT_SECRET || '').trim();
+  const jwtUnsafeReason =
+    !secret
+      ? 'missing'
+      : secret === DEFAULT_DEV_SECRET
+        ? 'default'
+        : secret.length < LIMITS.auth.jwtSecretMinLength
+          ? 'too_short'
+          : null;
+  const storage = new StorageService(env.DB);
+  const userCount = await storage.getUserCount();
+
+  return {
+    defaultKdfIterations: LIMITS.auth.defaultKdfIterations,
+    jwtUnsafeReason,
+    jwtSecretMinLength: LIMITS.auth.jwtSecretMinLength,
+    registrationInviteRequired: userCount > 0,
+  };
+}
+
+export async function handlePublicRoute(
+  request: Request,
+  env: Env,
+  path: string,
+  method: string,
+  enforcePublicRateLimit: PublicRateLimiter
+): Promise<Response | null> {
+  if (path === '/.well-known/appspecific/com.chrome.devtools.json' && method === 'GET') {
+    return new Response('{}', {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/json; charset=utf-8',
+        'Cache-Control': 'no-store',
+      },
+    });
+  }
+
+  if ((path === '/api/web-bootstrap' || path === '/web-bootstrap') && method === 'GET') {
+    const blocked = await enforcePublicRateLimit('public-read', LIMITS.rateLimit.publicReadRequestsPerMinute);
+    if (blocked) return blocked;
+    return jsonResponse(await buildWebBootstrapResponse(env));
+  }
+
+  const iconMatch = path.match(/^\/icons\/([^/]+)\/icon\.png$/i);
+  if (iconMatch && method === 'GET') {
+    const blocked = await enforcePublicRateLimit('public-icon', LIMITS.rateLimit.publicIconRequestsPerMinute);
+    if (blocked) return blocked;
+    const fallbackMode = new URL(request.url).searchParams.get('fallback') === '404' ? 'not-found' : 'default';
+    return handleWebsiteIcon(iconMatch[1], fallbackMode);
+  }
+
+  const publicAttachmentMatch = path.match(/^\/api\/attachments\/([a-f0-9-]+)\/([a-f0-9-]+)$/i);
+  if (publicAttachmentMatch && method === 'GET') {
+    return handlePublicDownloadAttachment(request, env, publicAttachmentMatch[1], publicAttachmentMatch[2]);
+  }
+
+  const publicAttachmentUploadMatch = path.match(/^\/api\/ciphers\/([a-f0-9-]+)\/attachment\/([a-f0-9-]+)$/i);
+  if (publicAttachmentUploadMatch && (method === 'POST' || method === 'PUT') && new URL(request.url).searchParams.has('token')) {
+    return handlePublicUploadAttachment(request, env, publicAttachmentUploadMatch[1], publicAttachmentUploadMatch[2]);
+  }
+
+  const publicSendUploadMatch = path.match(/^\/api\/sends\/([^/]+)\/file\/([^/]+)\/?$/i);
+  if (publicSendUploadMatch && (method === 'POST' || method === 'PUT') && new URL(request.url).searchParams.has('token')) {
+    return handlePublicUploadSendFile(request, env, publicSendUploadMatch[1], publicSendUploadMatch[2]);
+  }
+
+  const sendAccessMatch = path.match(/^\/api\/sends\/access\/([^/]+)$/i);
+  if (sendAccessMatch && method === 'POST') {
+    const blocked = await enforcePublicRateLimit();
+    if (blocked) return blocked;
+    return handleAccessSend(request, env, sendAccessMatch[1]);
+  }
+
+  if (path === '/api/sends/access' && method === 'POST') {
+    const blocked = await enforcePublicRateLimit();
+    if (blocked) return blocked;
+    return handleAccessSendV2(request, env);
+  }
+
+  const sendAccessFileV2Match = path.match(/^\/api\/sends\/access\/file\/([^/]+)\/?$/i);
+  if (sendAccessFileV2Match && method === 'POST') {
+    const blocked = await enforcePublicRateLimit();
+    if (blocked) return blocked;
+    return handleAccessSendFileV2(request, env, sendAccessFileV2Match[1]);
+  }
+
+  const sendAccessFileMatch = path.match(/^\/api\/sends\/([^/]+)\/access\/file\/([^/]+)\/?$/i);
+  if (sendAccessFileMatch && method === 'POST') {
+    const blocked = await enforcePublicRateLimit();
+    if (blocked) return blocked;
+    return handleAccessSendFile(request, env, sendAccessFileMatch[1], sendAccessFileMatch[2]);
+  }
+
+  const sendDownloadMatch = path.match(/^\/api\/sends\/([^/]+)\/([^/]+)\/?$/i);
+  if (sendDownloadMatch && method === 'GET') {
+    return handleDownloadSendFile(request, env, sendDownloadMatch[1], sendDownloadMatch[2]);
+  }
+
+  if (path === '/identity/connect/token' && method === 'POST') {
+    return handleToken(request, env);
+  }
+
+  if (path === '/api/devices/knowndevice' && method === 'GET') {
+    const blocked = await enforcePublicRateLimit();
+    if (blocked) return jsonResponse(false);
+    return handleKnownDevice(request, env);
+  }
+
+  const clearDeviceTokenMatch = path.match(/^\/api\/devices\/identifier\/([^/]+)\/clear-token$/i);
+  if (clearDeviceTokenMatch && (method === 'PUT' || method === 'POST')) {
+    return new Response(null, { status: 200 });
+  }
+
+  if ((path === '/identity/connect/revocation' || path === '/identity/connect/revoke') && method === 'POST') {
+    const blocked = await enforcePublicRateLimit('public-sensitive', LIMITS.rateLimit.sensitivePublicRequestsPerMinute);
+    if (blocked) return blocked;
+    return handleRevocation(request, env);
+  }
+
+  if (path === '/identity/accounts/prelogin' && method === 'POST') {
+    const blocked = await enforcePublicRateLimit('public-sensitive', LIMITS.rateLimit.sensitivePublicRequestsPerMinute);
+    if (blocked) return blocked;
+    return handlePrelogin(request, env);
+  }
+
+  if (path === '/identity/accounts/prelogin/password' && method === 'POST') {
+    const blocked = await enforcePublicRateLimit('public-sensitive', LIMITS.rateLimit.sensitivePublicRequestsPerMinute);
+    if (blocked) return blocked;
+    return handlePrelogin(request, env);
+  }
+
+  if (path === '/identity/accounts/webauthn/assertion-options' && method === 'GET') {
+    const blocked = await enforcePublicRateLimit('public-sensitive', LIMITS.rateLimit.sensitivePublicRequestsPerMinute);
+    if (blocked) return blocked;
+    return handleGetAccountPasskeyAssertionOptions(request, env);
+  }
+
+  if ((path === '/identity/accounts/recover-2fa' || path === '/api/accounts/recover-2fa') && method === 'POST') {
+    return handleRecoverTwoFactor(request, env);
+  }
+
+  if (path === '/api/accounts/password-hint' && method === 'POST') {
+    const blocked = await enforcePublicRateLimit('public-sensitive', LIMITS.rateLimit.sensitivePublicRequestsPerMinute);
+    if (blocked) return blocked;
+    if (!isSameOriginWriteRequest(request)) {
+      return new Response(JSON.stringify({ error: 'Forbidden origin' }), {
+        status: 403,
+        headers: { 'Content-Type': 'application/json' },
+      });
+    }
+    return handleGetPasswordHint(request, env);
+  }
+
+  if ((path === '/config' || path === '/api/config') && method === 'GET') {
+    const blocked = await enforcePublicRateLimit('public-read', LIMITS.rateLimit.publicReadRequestsPerMinute);
+    if (blocked) return blocked;
+    const origin = new URL(request.url).origin;
+    return jsonResponse(buildConfigResponse(origin));
+  }
+
+  if (path === '/api/version' && method === 'GET') {
+    const blocked = await enforcePublicRateLimit('public-read', LIMITS.rateLimit.publicReadRequestsPerMinute);
+    if (blocked) return blocked;
+    return jsonResponse(LIMITS.compatibility.bitwardenServerVersion);
+  }
+
+  if (path === '/api/accounts/register' && method === 'POST') {
+    const blocked = await enforcePublicRateLimit('register', LIMITS.rateLimit.registerRequestsPerMinute);
+    if (blocked) return blocked;
+    if (!isSameOriginWriteRequest(request)) {
+      return new Response(JSON.stringify({ error: 'Forbidden origin' }), {
+        status: 403,
+        headers: { 'Content-Type': 'application/json' },
+      });
+    }
+    return handleRegister(request, env);
+  }
+
+  if (path === '/notifications/hub/negotiate' && method === 'POST') {
+    return handleNotificationsNegotiate(request, env);
+  }
+
+  if (path === '/notifications/hub' && method === 'GET') {
+    return handleNotificationsHub(request, env);
+  }
+  return null;
+}

src/router.ts

@@ -1,424 +1,143 @@
-import { Env } from './types';
+import { DEFAULT_DEV_SECRET, Env } from './types';
 import { AuthService } from './services/auth';
 import { RateLimitService, getClientIdentifier } from './services/ratelimit';
-import { handleCors, errorResponse, jsonResponse } from './utils/response';
+import { handleCors, errorResponse } from './utils/response';
+import { LIMITS } from './config/limits';
+import { handleAuthenticatedRoute } from './router-authenticated';
+import { handlePublicRoute } from './router-public';
 
-// Identity handlers
-import { handleToken, handlePrelogin } from './handlers/identity';
+function jwtSecretUnsafeReason(env: Env): 'missing' | 'default' | 'too_short' | null {
+  const secret = (env.JWT_SECRET || '').trim();
+  if (!secret) return 'missing';
+  if (secret === DEFAULT_DEV_SECRET) return 'default';
+  if (secret.length < LIMITS.auth.jwtSecretMinLength) return 'too_short';
+  return null;
+}
 
-// Account handlers
-import { handleRegister, handleGetProfile, handleUpdateProfile, handleSetKeys, handleGetRevisionDate, handleVerifyPassword } from './handlers/accounts';
+function isImportBypassRequest(request: Request, path: string, method: string): boolean {
+  if (request.headers.get('X-NodeWarden-Import') !== '1') return false;
 
-// Cipher handlers
-import { 
-  handleGetCiphers, 
-  handleGetCipher, 
-  handleCreateCipher, 
-  handleUpdateCipher, 
-  handleDeleteCipher,
-  handlePermanentDeleteCipher,
-  handleRestoreCipher,
-  handlePartialUpdateCipher,
-  handleBulkMoveCiphers,
-} from './handlers/ciphers';
-
-// Folder handlers
-import { 
-  handleGetFolders, 
-  handleGetFolder, 
-  handleCreateFolder, 
-  handleUpdateFolder, 
-  handleDeleteFolder 
-} from './handlers/folders';
-
-// Sync handler
-import { handleSync } from './handlers/sync';
-
-// Setup handlers
-import { handleSetupPage, handleSetupStatus, handleDisableSetup } from './handlers/setup';
-
-// Import handler
-import { handleCiphersImport } from './handlers/import';
-
-// Attachment handlers
-import {
-  handleCreateAttachment,
-  handleUploadAttachment,
-  handleGetAttachment,
-  handleDeleteAttachment,
-  handlePublicDownloadAttachment,
-} from './handlers/attachments';
-
-// Icons handler - proxy to Bitwarden's official icon service
-async function handleGetIcon(request: Request, env: Env, hostname: string): Promise<Response> {
-  try {
-    // Use Bitwarden's official icon service
-    const iconUrl = `https://icons.bitwarden.net/${hostname}/icon.png`;
-    const resp = await fetch(iconUrl, {
-      headers: { 'User-Agent': 'NodeWarden/1.0' },
-      redirect: 'follow',
-    });
-
-    if (resp.ok) {
-      const body = await resp.arrayBuffer();
-      return new Response(body, {
-        status: 200,
-        headers: {
-          'Content-Type': resp.headers.get('Content-Type') || 'image/png',
-          'Cache-Control': 'public, max-age=604800', // 7 days
-          'Access-Control-Allow-Origin': '*',
-        },
-      });
-    }
-
-    return new Response(null, { status: 204 });
-  } catch {
-    return new Response(null, { status: 204 });
+  if (method === 'POST') {
+    if (path === '/api/ciphers/import') return true;
+    if (/^\/api\/ciphers\/[a-f0-9-]+\/attachment\/v2$/i.test(path)) return true;
+    if (/^\/api\/ciphers\/[a-f0-9-]+\/attachment\/[a-f0-9-]+$/i.test(path)) return true;
   }
+
+  return false;
 }
 
 export async function handleRequest(request: Request, env: Env): Promise<Response> {
   const url = new URL(request.url);
   const path = url.pathname;
   const method = request.method;
+  const clientId = getClientIdentifier(request);
 
-  // Handle CORS preflight
-  if (method === 'OPTIONS') {
-    return handleCors();
-  }
-
-  // Route matching
-  try {
-
-    // Setup page (root)
-    if (path === '/' && method === 'GET') {
-      return handleSetupPage(request, env);
+  async function enforcePublicRateLimit(
+    category: string = 'public',
+    maxRequests: number = LIMITS.rateLimit.publicRequestsPerMinute
+  ): Promise<Response | null> {
+    if (!clientId) {
+      return new Response(
+        JSON.stringify({
+          error: 'Forbidden',
+          error_description: 'Client IP is required',
+        }),
+        {
+          status: 403,
+          headers: { 'Content-Type': 'application/json' },
+        }
+      );
     }
 
-    // Setup status
-    if (path === '/setup/status' && method === 'GET') {
-      return handleSetupStatus(request, env);
-    }
-
-    // Disable setup page (one-way)
-    if (path === '/setup/disable' && method === 'POST') {
-      return handleDisableSetup(request, env);
-    }
-
-    // Favicon - return empty
-    if (path === '/favicon.ico') {
-      return new Response(null, { status: 204 });
-    }
-
-    // Icon endpoint - proxy to Bitwarden's icon service (no auth required)
-    const iconMatch = path.match(/^\/icons\/([^/]+)\/icon\.png$/i);
-    if (iconMatch) {
-      const hostname = iconMatch[1];
-      return handleGetIcon(request, env, hostname);
-    }
-
-    // Public attachment download (no auth header, uses token in query string)
-    const publicAttachmentMatch = path.match(/^\/api\/attachments\/([a-f0-9-]+)\/([a-f0-9-]+)$/i);
-    if (publicAttachmentMatch && method === 'GET') {
-      const cipherId = publicAttachmentMatch[1];
-      const attachmentId = publicAttachmentMatch[2];
-      return handlePublicDownloadAttachment(request, env, cipherId, attachmentId);
-    }
-
-    // Notifications hub (stub - no auth required, return 200 for connection)
-    if (path.startsWith('/notifications/')) {
-      return new Response(null, { status: 200 });
-    }
-
-    // Known device check (no auth required) - returns plain string "true" or "false"
-    if (path.startsWith('/api/devices/knowndevice')) {
-      return new Response('true', {
-        headers: {
-          'Content-Type': 'text/plain',
-        },
-      });
-    }
-
-    // Identity endpoints (no auth required)
-    if (path === '/identity/connect/token' && method === 'POST') {
-      return handleToken(request, env);
-    }
-
-    if (path === '/identity/accounts/prelogin' && method === 'POST') {
-      return handlePrelogin(request, env);
-    }
-
-    // Config endpoint (no auth required for basic config)
-    // Bitwarden clients call GET "/config" (relative to the API base URL).
-    // They also tolerate different casing, but their response models use PascalCase.
-    const isConfigRequest = (path === '/config' || path === '/api/config') && method === 'GET';
-    if (isConfigRequest) {
-      const origin = url.origin;
-      return jsonResponse({
-        version: '2025.12.0',
-        gitHash: 'nodewarden',
-        server: null,
-        environment: {
-          vault: origin,
-          api: origin + '/api',
-          identity: origin + '/identity',
-          notifications: origin + '/notifications',
-          sso: '',
-        },
-        featureStates: {
-          'duo-redirect': true,
-        },
-        object: 'config',
-      });
-    }
-
-    // Version endpoint (some clients probe this to validate the server)
-    if (path === '/api/version' && method === 'GET') {
-      return jsonResponse('2025.12.0');
-    }
-
-    // Registration endpoint (no auth required, but only works once)
-    if (path === '/api/accounts/register' && method === 'POST') {
-      return handleRegister(request, env);
-    }
-
-    // If JWT_SECRET is not safely configured, block any other endpoints.
-    const secret = (env.JWT_SECRET || '').trim();
-    if (!secret || secret.length < 32) {
-      return errorResponse('Server configuration error: JWT_SECRET is not set or too weak', 500);
-    }
-
-    // All other API endpoints require authentication
-    const auth = new AuthService(env);
-    const authHeader = request.headers.get('Authorization');
-    const payload = await auth.verifyAccessToken(authHeader);
-
-    if (!payload) {
-      return errorResponse('Unauthorized', 401);
-    }
-
-    const userId = payload.sub;
-
-    // API rate limiting for authenticated requests
     const rateLimit = new RateLimitService(env.DB);
-    const clientId = getClientIdentifier(request);
-    const rateLimitCheck = await rateLimit.checkApiRateLimit(userId + ':' + clientId);
-    
-    if (!rateLimitCheck.allowed) {
-      return new Response(JSON.stringify({
+    const check = await rateLimit.consumeBudget(`${clientId}:${category}`, maxRequests);
+    if (check.allowed) return null;
+
+    return new Response(
+      JSON.stringify({
         error: 'Too many requests',
-        error_description: `Rate limit exceeded. Try again in ${rateLimitCheck.retryAfterSeconds} seconds.`,
-      }), {
+        error_description: `Rate limit exceeded. Try again in ${check.retryAfterSeconds} seconds.`,
+      }),
+      {
         status: 429,
         headers: {
           'Content-Type': 'application/json',
-          'Retry-After': rateLimitCheck.retryAfterSeconds!.toString(),
+          'Retry-After': String(check.retryAfterSeconds || 60),
           'X-RateLimit-Remaining': '0',
         },
-      });
-    }
+      }
+    );
+  }
 
-    // Increment rate limit counter
-    await rateLimit.incrementApiCount(userId + ':' + clientId);
+  if (method === 'OPTIONS') {
+    return handleCors(request);
+  }
 
-    // Block account operations that could change password or delete user
-    if (method === 'POST' || method === 'PUT' || method === 'DELETE') {
-      const blockedAccountPaths = new Set([
-        '/api/accounts/password',
-        '/api/accounts/change-password',
-        '/api/accounts/set-password',
-        '/api/accounts/master-password',
-        '/api/accounts/delete',
-        '/api/accounts/delete-account',
-        '/api/accounts/delete-vault',
-      ]);
-      if (blockedAccountPaths.has(path)) {
-        return errorResponse('This operation is disabled', 403);
+  try {
+    const isLargeUploadPath =
+      /^\/api\/ciphers\/[a-f0-9-]+\/attachment\/[a-f0-9-]+$/i.test(path) ||
+      /^\/api\/sends\/[a-f0-9-]+\/file\/[a-f0-9-]+$/i.test(path) ||
+      path === '/api/admin/backup/import';
+    if (!isLargeUploadPath) {
+      const contentLength = parseInt(request.headers.get('Content-Length') || '0', 10);
+      if (contentLength > LIMITS.request.maxBodyBytes) {
+        return errorResponse('Request body too large', 413);
       }
     }
 
-    // Account endpoints
-    if (path === '/api/accounts/profile') {
-      if (method === 'GET') return handleGetProfile(request, env, userId);
-      if (method === 'PUT') return handleUpdateProfile(request, env, userId);
+    const publicResponse = await handlePublicRoute(request, env, path, method, enforcePublicRateLimit);
+    if (publicResponse) return publicResponse;
+
+    const secretIssue = jwtSecretUnsafeReason(env);
+    if (secretIssue) {
+      return errorResponse('Server configuration error: JWT_SECRET is not set or too weak', 500);
     }
 
-    if (path === '/api/accounts/keys' && method === 'POST') {
-      return handleSetKeys(request, env, userId);
+    const auth = new AuthService(env);
+    const authHeader = request.headers.get('Authorization');
+    const verified = await auth.verifyAccessTokenWithUser(authHeader);
+    if (!verified) {
+      return errorResponse('Unauthorized', 401);
+    }
+    const { payload, user: currentUser } = verified;
+
+    const actingDeviceId = String(payload.did || '').trim();
+    if (actingDeviceId) {
+      const nextHeaders = new Headers(request.headers);
+      nextHeaders.set('X-NodeWarden-Acting-Device-Id', actingDeviceId);
+      request = new Request(request, { headers: nextHeaders });
     }
 
-    // Revision date endpoint
-    if (path === '/api/accounts/revision-date' && method === 'GET') {
-      return handleGetRevisionDate(request, env, userId);
+    const userId = payload.sub;
+    if (currentUser.status !== 'active') {
+      return errorResponse('Account is disabled', 403);
     }
 
-    // Verify password endpoint
-    if (path === '/api/accounts/verify-password' && method === 'POST') {
-      return handleVerifyPassword(request, env, userId);
-    }
-
-    // Sync endpoint
-    if (path === '/api/sync' && method === 'GET') {
-      return handleSync(request, env, userId);
-    }
-
-    // Cipher endpoints
-    if (path === '/api/ciphers' || path === '/api/ciphers/create') {
-      if (method === 'GET') return handleGetCiphers(request, env, userId);
-      if (method === 'POST') return handleCreateCipher(request, env, userId);
-    }
-
-    // Ciphers import endpoint (Bitwarden client format)
-    if (path === '/api/ciphers/import' && method === 'POST') {
-      return handleCiphersImport(request, env, userId);
-    }
-
-    // Bulk cipher operations (only move is allowed)
-    if (path === '/api/ciphers/move') {
-      if (method === 'POST' || method === 'PUT') {
-        return handleBulkMoveCiphers(request, env, userId);
+    if (!isImportBypassRequest(request, path, method)) {
+      const rateLimit = new RateLimitService(env.DB);
+      const rateLimitCheck = await rateLimit.consumeBudget(`${userId}:api`, LIMITS.rateLimit.apiRequestsPerMinute);
+      if (!rateLimitCheck.allowed) {
+        return new Response(
+          JSON.stringify({
+            error: 'Too many requests',
+            error_description: `Rate limit exceeded. Try again in ${rateLimitCheck.retryAfterSeconds} seconds.`,
+          }),
+          {
+            status: 429,
+            headers: {
+              'Content-Type': 'application/json',
+              'Retry-After': String(rateLimitCheck.retryAfterSeconds || 60),
+              'X-RateLimit-Remaining': '0',
+            },
+          }
+        );
       }
     }
 
-    // Match /api/ciphers/:id patterns
-    const cipherMatch = path.match(/^\/api\/ciphers\/([a-f0-9-]+)(\/.*)?$/i);
-    if (cipherMatch) {
-      const cipherId = cipherMatch[1];
-      const subPath = cipherMatch[2] || '';
+    const authenticatedResponse = await handleAuthenticatedRoute(request, env, userId, currentUser, path, method);
+    if (authenticatedResponse) return authenticatedResponse;
 
-      if (subPath === '' || subPath === '/') {
-        if (method === 'GET') return handleGetCipher(request, env, userId, cipherId);
-        if (method === 'PUT' || method === 'POST') return handleUpdateCipher(request, env, userId, cipherId);
-        if (method === 'DELETE') return handleDeleteCipher(request, env, userId, cipherId);
-      }
-
-      if (subPath === '/delete' && method === 'PUT') {
-        return handleDeleteCipher(request, env, userId, cipherId);
-      }
-
-      if (subPath === '/delete' && method === 'DELETE') {
-        return handlePermanentDeleteCipher(request, env, userId, cipherId);
-      }
-
-      if (subPath === '/restore' && method === 'PUT') {
-        return handleRestoreCipher(request, env, userId, cipherId);
-      }
-
-      if (subPath === '/partial' && (method === 'PUT' || method === 'POST')) {
-        return handlePartialUpdateCipher(request, env, userId, cipherId);
-      }
-
-      // Share endpoint - just return the cipher (single user mode)
-      if (subPath === '/share' && method === 'POST') {
-        return handleGetCipher(request, env, userId, cipherId);
-      }
-
-      if (subPath === '/details' && method === 'GET') {
-        return handleGetCipher(request, env, userId, cipherId);
-      }
-
-      // Attachment endpoints
-      // POST /api/ciphers/{id}/attachment/v2 - Create attachment metadata
-      if (subPath === '/attachment/v2' && method === 'POST') {
-        return handleCreateAttachment(request, env, userId, cipherId);
-      }
-
-      // Legacy attachment endpoint - also goes to v2 flow
-      if (subPath === '/attachment' && method === 'POST') {
-        return handleCreateAttachment(request, env, userId, cipherId);
-      }
-
-      // Match /api/ciphers/{id}/attachment/{attachmentId}
-      const attachmentMatch = subPath.match(/^\/attachment\/([a-f0-9-]+)$/i);
-      if (attachmentMatch) {
-        const attachmentId = attachmentMatch[1];
-        if (method === 'POST') return handleUploadAttachment(request, env, userId, cipherId, attachmentId);
-        if (method === 'GET') return handleGetAttachment(request, env, userId, cipherId, attachmentId);
-        if (method === 'DELETE') return handleDeleteAttachment(request, env, userId, cipherId, attachmentId);
-      }
-
-      // DELETE via POST (legacy)
-      const attachmentDeleteMatch = subPath.match(/^\/attachment\/([a-f0-9-]+)\/delete$/i);
-      if (attachmentDeleteMatch && method === 'POST') {
-        const attachmentId = attachmentDeleteMatch[1];
-        return handleDeleteAttachment(request, env, userId, cipherId, attachmentId);
-      }
-    }
-
-    // Folder endpoints
-    if (path === '/api/folders') {
-      if (method === 'GET') return handleGetFolders(request, env, userId);
-      if (method === 'POST') return handleCreateFolder(request, env, userId);
-    }
-
-    // Match /api/folders/:id patterns
-    const folderMatch = path.match(/^\/api\/folders\/([a-f0-9-]+)$/i);
-    if (folderMatch) {
-      const folderId = folderMatch[1];
-      if (method === 'GET') return handleGetFolder(request, env, userId, folderId);
-      if (method === 'PUT') return handleUpdateFolder(request, env, userId, folderId);
-      if (method === 'DELETE') return handleDeleteFolder(request, env, userId, folderId);
-    }
-
-    // Auth requests endpoint (stub - we don't support passwordless login)
-    if (path.startsWith('/api/auth-requests')) {
-      return jsonResponse({ data: [], object: 'list', continuationToken: null });
-    }
-
-    // Collections endpoint (stub - no organization support)
-    if (path === '/api/collections' || path.startsWith('/api/collections/')) {
-      if (method === 'GET') {
-        return jsonResponse({ data: [], object: 'list', continuationToken: null });
-      }
-    }
-
-    // Organizations endpoint (stub - no organization support)
-    if (path === '/api/organizations' || path.startsWith('/api/organizations/')) {
-      if (method === 'GET') {
-        return jsonResponse({ data: [], object: 'list', continuationToken: null });
-      }
-    }
-
-    // Sends endpoint (stub - not implemented)
-    if (path === '/api/sends' || path.startsWith('/api/sends/')) {
-      if (method === 'GET') {
-        return jsonResponse({ data: [], object: 'list', continuationToken: null });
-      }
-    }
-
-    // Policies endpoint (stub - not implemented)
-    if (path === '/api/policies' || path.startsWith('/api/policies/')) {
-      if (method === 'GET') {
-        return jsonResponse({ data: [], object: 'list', continuationToken: null });
-      }
-    }
-
-    // Settings domains endpoint (stub)
-    if (path === '/api/settings/domains') {
-      if (method === 'GET') {
-        return jsonResponse({
-          equivalentDomains: [],
-          globalEquivalentDomains: [],
-          object: 'domains',
-        });
-      }
-      if (method === 'PUT' || method === 'POST') {
-        return jsonResponse({
-          equivalentDomains: [],
-          globalEquivalentDomains: [],
-          object: 'domains',
-        });
-      }
-    }
-
-    // Devices endpoint (stub) - for authenticated requests
-    if (path === '/api/devices' && method === 'GET') {
-      return jsonResponse({ data: [], object: 'list', continuationToken: null });
-    }
-
-    // Not found
     return errorResponse('Not found', 404);
-
   } catch (error) {
     console.error('Request error:', error);
     return errorResponse('Internal server error', 500);

src/services/audit-events.ts

@@ -0,0 +1,210 @@
+import type { Env } from '../types';
+import { generateUUID } from '../utils/uuid';
+import { StorageService } from './storage';
+
+export type AuditLogCategory = 'auth' | 'security' | 'device' | 'data' | 'system';
+export type AuditLogLevel = 'info' | 'warn' | 'error' | 'security';
+
+export interface AuditEventInput {
+  actorUserId?: string | null;
+  action: string;
+  category: AuditLogCategory;
+  level?: AuditLogLevel;
+  targetType?: string | null;
+  targetId?: string | null;
+  metadata?: Record<string, unknown> | null;
+}
+
+const SENSITIVE_KEY_RE = /(token|secret|password|key|hash|code|private)/i;
+const MAX_METADATA_BYTES = 2048;
+const AUDIT_CLEANUP_INTERVAL_MS = 6 * 60 * 60 * 1000;
+const AUDIT_CLEANUP_PROBABILITY = 0.02;
+const AUDIT_LOG_SETTINGS_KEY = 'audit.logs.settings.v1';
+const DEFAULT_AUDIT_LOG_SETTINGS: AuditLogSettings = {
+  retentionDays: 90,
+  maxEntries: null,
+};
+let lastAuditCleanupAt = 0;
+
+export interface AuditLogSettings {
+  retentionDays: number | null;
+  maxEntries: number | null;
+}
+
+const ALLOWED_METADATA_KEYS = new Set([
+  'method',
+  'path',
+  'ip',
+  'userAgent',
+  'email',
+  'targetEmail',
+  'grantType',
+  'webSession',
+  'deviceIdentifier',
+  'deviceType',
+  'reason',
+  'status',
+  'verifyDevices',
+  'changed',
+  'removed',
+  'updated',
+  'deleted',
+  'removedTrusted',
+  'removedSessions',
+  'removedDevices',
+  'requested',
+  'count',
+  'requestedCount',
+  'type',
+  'folderId',
+  'cipherId',
+  'size',
+  'users',
+  'ciphers',
+  'attachments',
+  'skippedAttachments',
+  'skippedReason',
+  'replaceExisting',
+  'provider',
+  'prfStatus',
+  'fileName',
+  'fileBytes',
+  'bytes',
+  'compressedBytes',
+  'includesAttachments',
+  'destinationName',
+  'destinationId',
+  'destinationType',
+  'destinationCount',
+  'scheduledDestinationCount',
+  'retentionDays',
+  'maxEntries',
+  'remotePath',
+  'trigger',
+  'prunedFileCount',
+  'pruneError',
+  'uploadVerificationAttempts',
+  'error',
+  'expiresInHours',
+  'checksumMismatchAccepted',
+]);
+
+function normalizePositiveInteger(value: unknown, allowed: readonly number[]): number | null {
+  if (value === null || value === 0 || value === '0' || value === 'forever' || value === 'unlimited') return null;
+  const parsed = Math.floor(Number(value));
+  return allowed.includes(parsed) ? parsed : null;
+}
+
+export function normalizeAuditLogSettings(value: unknown): AuditLogSettings {
+  const input = value && typeof value === 'object' ? value as Record<string, unknown> : {};
+  const retentionDays = normalizePositiveInteger(input.retentionDays, [7, 30, 90, 180, 365]);
+  const maxEntries = normalizePositiveInteger(input.maxEntries, [1_000, 5_000, 10_000, 50_000]);
+
+  if (retentionDays) return { retentionDays, maxEntries: null };
+  if (maxEntries) return { retentionDays: null, maxEntries };
+  if (input.retentionDays === null || input.retentionDays === 0 || input.retentionDays === '0') {
+    return { retentionDays: null, maxEntries: null };
+  }
+  if (input.maxEntries === null || input.maxEntries === 0 || input.maxEntries === '0') {
+    return { retentionDays: null, maxEntries: null };
+  }
+
+  return {
+    ...DEFAULT_AUDIT_LOG_SETTINGS,
+  };
+}
+
+export function auditRequestMetadata(request: Request): Record<string, unknown> {
+  const url = new URL(request.url);
+  return {
+    method: request.method,
+    path: url.pathname,
+    ip: request.headers.get('CF-Connecting-IP') || request.headers.get('X-Forwarded-For') || null,
+    userAgent: request.headers.get('User-Agent') || null,
+  };
+}
+
+function sanitizeMetadata(metadata: Record<string, unknown>): Record<string, unknown> {
+  const clean: Record<string, unknown> = {};
+  for (const [key, value] of Object.entries(metadata)) {
+    if (!ALLOWED_METADATA_KEYS.has(key)) continue;
+    if (value === undefined || value === null || value === '') continue;
+    if (SENSITIVE_KEY_RE.test(key)) continue;
+    if (Array.isArray(value)) {
+      clean[key] = value.length;
+      continue;
+    }
+    if (typeof value === 'object') continue;
+    clean[key] = value;
+  }
+  return clean;
+}
+
+export async function getAuditLogSettings(storage: StorageService): Promise<AuditLogSettings> {
+  const raw = await storage.getConfigValue(AUDIT_LOG_SETTINGS_KEY);
+  if (!raw) return { ...DEFAULT_AUDIT_LOG_SETTINGS };
+  try {
+    return normalizeAuditLogSettings(JSON.parse(raw));
+  } catch {
+    return { ...DEFAULT_AUDIT_LOG_SETTINGS };
+  }
+}
+
+export async function saveAuditLogSettings(storage: StorageService, settings: AuditLogSettings): Promise<AuditLogSettings> {
+  const normalized = normalizeAuditLogSettings(settings);
+  await storage.setConfigValue(AUDIT_LOG_SETTINGS_KEY, JSON.stringify(normalized));
+  await applyAuditLogRetention(storage, normalized);
+  return normalized;
+}
+
+export async function applyAuditLogRetention(storage: StorageService, settings?: AuditLogSettings): Promise<void> {
+  const current = settings || await getAuditLogSettings(storage);
+  if (current.retentionDays) {
+    const before = new Date(Date.now() - current.retentionDays * 24 * 60 * 60 * 1000).toISOString();
+    await storage.pruneAuditLogs(before);
+  }
+  if (current.maxEntries) {
+    await storage.pruneAuditLogsToMax(current.maxEntries);
+  }
+}
+
+async function maybePruneAuditLogs(storage: StorageService): Promise<void> {
+  const now = Date.now();
+  if (now - lastAuditCleanupAt < AUDIT_CLEANUP_INTERVAL_MS) return;
+  if (Math.random() > AUDIT_CLEANUP_PROBABILITY) return;
+  lastAuditCleanupAt = now;
+  await applyAuditLogRetention(storage);
+}
+
+async function insertAuditEvent(storage: StorageService, event: AuditEventInput): Promise<void> {
+  const metadata = sanitizeMetadata(event.metadata || {});
+  let metadataJson = JSON.stringify(metadata);
+  if (new TextEncoder().encode(metadataJson).byteLength > MAX_METADATA_BYTES) {
+    metadataJson = JSON.stringify({ truncated: true });
+  }
+
+  await storage.createAuditLog({
+    id: generateUUID(),
+    actorUserId: event.actorUserId ?? null,
+    action: event.action,
+    category: event.category,
+    level: event.level || 'info',
+    targetType: event.targetType ?? null,
+    targetId: event.targetId ?? null,
+    metadata: metadataJson,
+    createdAt: new Date().toISOString(),
+  });
+  await maybePruneAuditLogs(storage);
+}
+
+export async function writeAuditEvent(storage: StorageService, event: AuditEventInput): Promise<void> {
+  try {
+    await insertAuditEvent(storage, event);
+  } catch (error) {
+    console.error('audit log write failed', error);
+  }
+}
+
+export async function safeWriteAuditEvent(env: Env, event: AuditEventInput): Promise<void> {
+  await writeAuditEvent(new StorageService(env.DB), event);
+}

src/services/auth.ts

@@ -2,42 +2,201 @@ import { Env, JWTPayload, User } from '../types';
 import { verifyJWT, createJWT, createRefreshToken } from '../utils/jwt';
 import { StorageService } from './storage';
 
+// Server-side iterations for second-layer hashing.
+// The client already does heavy PBKDF2 (600k iterations).
+// This second layer only needs to be non-trivial, not expensive.
+const SERVER_HASH_ITERATIONS = 100_000;
+const SERVER_HASH_PREFIX = '$s$';
+const AUTH_CONTEXT_CACHE_TTL_MS = 15 * 1000;
+
+interface CachedUserEntry {
+  user: User | null;
+  expiresAt: number;
+}
+
+interface CachedDeviceEntry {
+  device: Awaited<ReturnType<StorageService['getDevice']>>;
+  expiresAt: number;
+}
+
+export interface VerifiedAccessContext {
+  payload: JWTPayload;
+  user: User;
+}
+
+export type RefreshAccessTokenFailureReason =
+  | 'token_not_found_or_expired'
+  | 'user_missing'
+  | 'user_inactive'
+  | 'device_missing'
+  | 'device_session_mismatch';
+
+export type RefreshAccessTokenResult =
+  | { ok: true; accessToken: string; user: User; device: { identifier: string; sessionStamp: string } | null }
+  | {
+      ok: false;
+      reason: RefreshAccessTokenFailureReason;
+      userId?: string | null;
+      deviceIdentifier?: string | null;
+    };
+
 export class AuthService {
   private storage: StorageService;
+  private static userCache = new Map<string, CachedUserEntry>();
+  private static deviceCache = new Map<string, CachedDeviceEntry>();
 
   constructor(private env: Env) {
     this.storage = new StorageService(env.DB);
   }
 
-  // Verify password hash (compare with stored hash)
-  async verifyPassword(inputHash: string, storedHash: string): Promise<boolean> {
-    // In Bitwarden, the client sends the password hash directly
-    // We compare the hashes
-    return inputHash === storedHash;
+  static invalidateUserCache(userId: string): void {
+    const normalizedUserId = String(userId || '').trim();
+    if (!normalizedUserId) return;
+    AuthService.userCache.delete(normalizedUserId);
+    const prefix = `${normalizedUserId}:`;
+    for (const key of AuthService.deviceCache.keys()) {
+      if (key.startsWith(prefix)) {
+        AuthService.deviceCache.delete(key);
+      }
+    }
+  }
+
+  static invalidateDeviceCache(userId: string, deviceId: string): void {
+    const normalizedUserId = String(userId || '').trim();
+    const normalizedDeviceId = String(deviceId || '').trim();
+    if (!normalizedUserId || !normalizedDeviceId) return;
+    AuthService.deviceCache.delete(`${normalizedUserId}:${normalizedDeviceId}`);
+  }
+
+  private readCachedUser(userId: string): User | null | undefined {
+    const cached = AuthService.userCache.get(userId);
+    if (!cached) return undefined;
+    if (cached.expiresAt <= Date.now()) {
+      AuthService.userCache.delete(userId);
+      return undefined;
+    }
+    return cached.user;
+  }
+
+  private writeCachedUser(userId: string, user: User | null): void {
+    AuthService.userCache.set(userId, {
+      user,
+      expiresAt: Date.now() + AUTH_CONTEXT_CACHE_TTL_MS,
+    });
+  }
+
+  private async getCachedUser(userId: string): Promise<User | null> {
+    const cached = this.readCachedUser(userId);
+    if (cached !== undefined) return cached;
+    const user = await this.storage.getUserById(userId);
+    this.writeCachedUser(userId, user);
+    return user;
+  }
+
+  private async getFreshUser(userId: string): Promise<User | null> {
+    const user = await this.storage.getUserById(userId);
+    this.writeCachedUser(userId, user);
+    return user;
+  }
+
+  private readCachedDevice(userId: string, deviceId: string) {
+    const cacheKey = `${userId}:${deviceId}`;
+    const cached = AuthService.deviceCache.get(cacheKey);
+    if (!cached) return undefined;
+    if (cached.expiresAt <= Date.now()) {
+      AuthService.deviceCache.delete(cacheKey);
+      return undefined;
+    }
+    return cached.device;
+  }
+
+  private writeCachedDevice(userId: string, deviceId: string, device: Awaited<ReturnType<StorageService['getDevice']>>): void {
+    const cacheKey = `${userId}:${deviceId}`;
+    AuthService.deviceCache.set(cacheKey, {
+      device,
+      expiresAt: Date.now() + AUTH_CONTEXT_CACHE_TTL_MS,
+    });
+  }
+
+  private async getCachedDevice(userId: string, deviceId: string) {
+    const cached = this.readCachedDevice(userId, deviceId);
+    if (cached !== undefined) return cached;
+    const device = await this.storage.getDevice(userId, deviceId);
+    this.writeCachedDevice(userId, deviceId, device);
+    return device;
+  }
+
+  private async getFreshDevice(userId: string, deviceId: string) {
+    const device = await this.storage.getDevice(userId, deviceId);
+    this.writeCachedDevice(userId, deviceId, device);
+    return device;
+  }
+
+  // Second-layer hash: PBKDF2-SHA256(clientHash, email-salt, iterations).
+  // Ensures database contents alone cannot be used to authenticate (pass-the-hash defense).
+  // Result is prefixed to distinguish server-hashed credentials from invalid legacy rows.
+  async hashPasswordServer(clientHash: string, email: string): Promise<string> {
+    const keyMaterial = await crypto.subtle.importKey(
+      'raw',
+      new TextEncoder().encode(clientHash),
+      'PBKDF2',
+      false,
+      ['deriveBits']
+    );
+    const salt = new TextEncoder().encode(email.toLowerCase().trim());
+    const bits = await crypto.subtle.deriveBits(
+      { name: 'PBKDF2', hash: 'SHA-256', salt, iterations: SERVER_HASH_ITERATIONS },
+      keyMaterial,
+      256
+    );
+    const bytes = new Uint8Array(bits);
+    let binary = '';
+    for (const b of bytes) binary += String.fromCharCode(b);
+    return SERVER_HASH_PREFIX + btoa(binary);
+  }
+
+  // Verify password: new rows use server-side hashing; legacy rows store the raw client hash.
+  async verifyPassword(inputHash: string, storedHash: string, email: string): Promise<boolean> {
+    if (!storedHash.startsWith(SERVER_HASH_PREFIX)) {
+      return this.constantTimeEquals(inputHash, storedHash);
+    }
+    const serverHash = await this.hashPasswordServer(inputHash, email);
+    return this.constantTimeEquals(serverHash, storedHash);
+  }
+
+  private constantTimeEquals(a: string, b: string): boolean {
+    const encA = new TextEncoder().encode(a);
+    const encB = new TextEncoder().encode(b);
+    if (encA.length !== encB.length) return false;
+    let diff = 0;
+    for (let i = 0; i < encA.length; i++) {
+      diff |= encA[i] ^ encB[i];
+    }
+    return diff === 0;
   }
 
   // Generate access token
-  async generateAccessToken(user: User): Promise<string> {
+  async generateAccessToken(user: User, device?: { identifier: string; sessionStamp: string } | null): Promise<string> {
     return createJWT(
       {
         sub: user.id,
         email: user.email,
         name: user.name,
         sstamp: user.securityStamp,
+        ...(device?.identifier ? { did: device.identifier, dstamp: device.sessionStamp } : {}),
       },
       this.env.JWT_SECRET
     );
   }
 
   // Generate refresh token
-  async generateRefreshToken(userId: string): Promise<string> {
+  async generateRefreshToken(userId: string, device?: { identifier: string; sessionStamp: string } | null): Promise<string> {
     const token = createRefreshToken();
-    await this.storage.saveRefreshToken(token, userId);
+    await this.storage.saveRefreshToken(token, userId, undefined, device?.identifier ?? null, device?.sessionStamp ?? null);
     return token;
   }
 
-  // Verify access token from Authorization header
-  async verifyAccessToken(authHeader: string | null): Promise<JWTPayload | null> {
+  async verifyAccessTokenWithUser(authHeader: string | null): Promise<VerifiedAccessContext | null> {
     if (!authHeader) return null;
 
     const parts = authHeader.split(' ');
@@ -48,26 +207,75 @@ export class AuthService {
     const payload = await verifyJWT(parts[1], this.env.JWT_SECRET);
     if (!payload) return null;
 
-    // Verify security stamp - ensures token is invalidated after password change
-    const user = await this.storage.getUserById(payload.sub);
+    let user = await this.getCachedUser(payload.sub);
+    if (!user || user.status !== 'active' || payload.sstamp !== user.securityStamp) {
+      user = await this.getFreshUser(payload.sub);
+    }
     if (!user) return null;
-    
+    if (user.status !== 'active') return null;
+
     if (payload.sstamp !== user.securityStamp) {
-      return null; // Token was issued before password change
+      return null;
     }
 
-    return payload;
+    if (payload.did) {
+      let device = await this.getCachedDevice(user.id, payload.did);
+      if (!device || !payload.dstamp || payload.dstamp !== device.sessionStamp) {
+        device = await this.getFreshDevice(user.id, payload.did);
+      }
+      if (!device) return null;
+      if (!payload.dstamp || payload.dstamp !== device.sessionStamp) return null;
+    }
+
+    return { payload, user };
+  }
+
+  // Verify access token from Authorization header
+  async verifyAccessToken(authHeader: string | null): Promise<JWTPayload | null> {
+    const verified = await this.verifyAccessTokenWithUser(authHeader);
+    return verified?.payload ?? null;
   }
 
   // Refresh access token
-  async refreshAccessToken(refreshToken: string): Promise<{ accessToken: string; user: User } | null> {
-    const userId = await this.storage.getRefreshTokenUserId(refreshToken);
-    if (!userId) return null;
+  async refreshAccessTokenDetailed(refreshToken: string): Promise<RefreshAccessTokenResult> {
+    const record = await this.storage.getRefreshTokenRecord(refreshToken);
+    if (!record?.userId) return { ok: false, reason: 'token_not_found_or_expired' };
 
-    const user = await this.storage.getUserById(userId);
-    if (!user) return null;
+    const user = await this.storage.getUserById(record.userId);
+    if (!user) {
+      await this.storage.deleteRefreshToken(refreshToken);
+      return { ok: false, reason: 'user_missing', userId: record.userId, deviceIdentifier: record.deviceIdentifier };
+    }
+    if (user.status !== 'active') {
+      await this.storage.deleteRefreshToken(refreshToken);
+      return { ok: false, reason: 'user_inactive', userId: user.id, deviceIdentifier: record.deviceIdentifier };
+    }
 
-    const accessToken = await this.generateAccessToken(user);
-    return { accessToken, user };
+    let device: { identifier: string; sessionStamp: string } | null = null;
+    if (!record.deviceIdentifier || !record.deviceSessionStamp) {
+      await this.storage.deleteRefreshToken(refreshToken);
+      return { ok: false, reason: 'device_missing', userId: user.id, deviceIdentifier: record.deviceIdentifier };
+    }
+
+    const boundDevice = await this.storage.getDevice(user.id, record.deviceIdentifier);
+    if (!boundDevice) {
+      await this.storage.deleteRefreshToken(refreshToken);
+      return { ok: false, reason: 'device_missing', userId: user.id, deviceIdentifier: record.deviceIdentifier };
+    }
+    if (boundDevice.sessionStamp !== record.deviceSessionStamp) {
+      await this.storage.deleteRefreshToken(refreshToken);
+      return { ok: false, reason: 'device_session_mismatch', userId: user.id, deviceIdentifier: record.deviceIdentifier };
+    }
+    device = { identifier: boundDevice.deviceIdentifier, sessionStamp: boundDevice.sessionStamp };
+
+    const accessToken = await this.generateAccessToken(user, device);
+    return { ok: true, accessToken, user, device };
+  }
+
+  async refreshAccessToken(
+    refreshToken: string
+  ): Promise<{ accessToken: string; user: User; device: { identifier: string; sessionStamp: string } | null } | null> {
+    const result = await this.refreshAccessTokenDetailed(refreshToken);
+    return result.ok ? result : null;
   }
 }

src/services/backup-archive.ts

@@ -0,0 +1,500 @@
+import { zipSync, unzipSync } from 'fflate';
+import type { Env } from '../types';
+import { APP_VERSION } from '../../shared/app-version';
+import { BACKUP_SETTINGS_CONFIG_KEY } from './backup-config';
+import { exportPortableBackupSettingsEnvelope } from './backup-settings-crypto';
+import {
+  getAttachmentObjectKey,
+  getBlobStorageKind,
+} from './blob-store';
+
+// CONTRACT:
+// This file defines the exported instance-backup archive shape. Keep it in lock
+// step with src/services/backup-import.ts and webapp/src/lib/api/backup.ts.
+//
+// WHEN CHANGING THIS:
+// - Add persistent tables to BackupPayload, export SQL, manifest tableCounts,
+//   and validateBackupPayloadContents().
+// - Keep secrets and transient runtime rows sanitized before writing db.json.
+// - users.api_key is intentionally not exported.
+// - backup.settings.v1 is exported as portable-only; the current server runtime
+//   envelope must not leave the instance.
+type SqlRow = Record<string, string | number | null>;
+
+const BACKUP_FORMAT_VERSION = 1;
+const BACKUP_RUNNER_LOCK_CONFIG_KEY = 'backup.runner.lock.v1';
+const BACKUP_FILE_HASH_PREFIX_LENGTH = 5;
+// Worker-side backup export must stay well below Cloudflare CPU limits.
+// Prefer store-only ZIP entries over heavier compression to keep exports reliable.
+const BACKUP_TEXT_COMPRESSION_LEVEL = 0;
+const BACKUP_JSON_INDENT = 2;
+const MAX_BACKUP_ARCHIVE_BYTES = 64 * 1024 * 1024;
+const MAX_BACKUP_ARCHIVE_ENTRY_COUNT = 10_000;
+const MAX_BACKUP_EXTRACTED_BYTES = 64 * 1024 * 1024;
+const MAX_BACKUP_DB_JSON_BYTES = 32 * 1024 * 1024;
+
+export interface BackupManifest {
+  formatVersion: 1;
+  exportedAt: string;
+  appVersion: string;
+  storageKind: 'r2' | 'kv' | null;
+  tableCounts: Record<string, number>;
+  includes: {
+    attachments: boolean;
+  };
+  blobSummary: {
+    attachmentFiles: number;
+    totalBytes: number;
+    largestObjectBytes: number;
+  };
+  attachmentBlobs?: BackupManifestAttachmentBlob[];
+}
+
+export interface BackupManifestAttachmentBlob {
+  cipherId: string;
+  attachmentId: string;
+  blobName: string;
+  sizeBytes: number;
+}
+
+export interface BackupPayload {
+  manifest: BackupManifest;
+  db: {
+    config: SqlRow[];
+    users: SqlRow[];
+    domain_settings: SqlRow[];
+    user_revisions: SqlRow[];
+    folders: SqlRow[];
+    ciphers: SqlRow[];
+    attachments: SqlRow[];
+    webauthn_credentials?: SqlRow[];
+  };
+}
+
+export interface BackupArchiveBundle {
+  bytes: Uint8Array;
+  fileName: string;
+  manifest: BackupManifest;
+}
+
+export interface BackupFileIntegrityCheckResult {
+  hasChecksumPrefix: boolean;
+  expectedPrefix: string | null;
+  actualPrefix: string;
+  matches: boolean;
+}
+
+export interface BuildBackupArchiveOptions {
+  includeAttachments?: boolean;
+  progress?: BackupArchiveBuildProgressReporter;
+  timeZone?: string;
+}
+
+export interface BackupArchiveBuildProgressEvent {
+  step: string;
+  fileName?: string;
+  stageTitle: string;
+  stageDetail: string;
+  includeAttachments: boolean;
+}
+
+export type BackupArchiveBuildProgressReporter = (event: BackupArchiveBuildProgressEvent) => Promise<void>;
+
+async function queryRows(db: D1Database, sql: string, ...values: unknown[]): Promise<SqlRow[]> {
+  const result = await db.prepare(sql).bind(...values).all<SqlRow>();
+  return (result.results || []).map((row) => ({ ...row }));
+}
+
+function sanitizeConfigRowsForExport(rows: SqlRow[]): SqlRow[] {
+  const sanitized: SqlRow[] = [];
+  for (const row of rows) {
+    const key = String(row.key || '').trim();
+    if (!key || key === BACKUP_RUNNER_LOCK_CONFIG_KEY) continue;
+
+    if (key === BACKUP_SETTINGS_CONFIG_KEY) {
+      const portableOnly = exportPortableBackupSettingsEnvelope(typeof row.value === 'string' ? row.value : null);
+      if (portableOnly) sanitized.push({ ...row, value: portableOnly });
+      continue;
+    }
+
+    sanitized.push({ ...row });
+  }
+  return sanitized;
+}
+
+async function sha256Hex(bytes: Uint8Array): Promise<string> {
+  const digest = await crypto.subtle.digest('SHA-256', bytes);
+  return Array.from(new Uint8Array(digest)).map((byte) => byte.toString(16).padStart(2, '0')).join('');
+}
+
+function getDateParts(date: Date, timeZone: string): string {
+  const formatter = new Intl.DateTimeFormat('en-CA', {
+    timeZone,
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit',
+    hourCycle: 'h23',
+  });
+  const parts = formatter.formatToParts(date);
+  const pick = (type: string): string => parts.find((part) => part.type === type)?.value || '';
+  return `${pick('year')}${pick('month')}${pick('day')}_${pick('hour')}${pick('minute')}${pick('second')}`;
+}
+
+function buildBackupFileNameInTimeZone(
+  date: Date = new Date(),
+  checksumPrefix: string | null = null,
+  timeZone: string = 'UTC'
+): string {
+  const parts = getDateParts(date, timeZone);
+  const suffix = checksumPrefix ? `_${checksumPrefix}` : '';
+  return `nodewarden_backup_${parts}${suffix}.zip`;
+}
+
+export function extractBackupFileChecksumPrefix(fileName: string): string | null {
+  const normalized = String(fileName || '').trim();
+  const match = normalized.match(/_([0-9a-f]{5})\.zip$/i);
+  return match ? match[1].toLowerCase() : null;
+}
+
+export async function inspectBackupArchiveFileNameChecksum(
+  bytes: Uint8Array,
+  fileName: string
+): Promise<BackupFileIntegrityCheckResult> {
+  const expectedPrefix = extractBackupFileChecksumPrefix(fileName);
+  const actualHash = await sha256Hex(bytes);
+  const actualPrefix = actualHash.slice(0, BACKUP_FILE_HASH_PREFIX_LENGTH);
+  return {
+    hasChecksumPrefix: !!expectedPrefix,
+    expectedPrefix,
+    actualPrefix,
+    matches: !expectedPrefix || actualPrefix === expectedPrefix,
+  };
+}
+
+export async function verifyBackupArchiveFileNameChecksum(bytes: Uint8Array, fileName: string): Promise<boolean> {
+  const result = await inspectBackupArchiveFileNameChecksum(bytes, fileName);
+  return result.matches;
+}
+
+function validateArchiveSize(bytes: Uint8Array): void {
+  if (bytes.byteLength > MAX_BACKUP_ARCHIVE_BYTES) {
+    throw new Error(`Backup archive is too large. The current restore limit is ${Math.floor(MAX_BACKUP_ARCHIVE_BYTES / (1024 * 1024))} MiB`);
+  }
+}
+
+function getRequiredZipEntries(db: BackupPayload['db']): string[] {
+  const entries: string[] = [];
+  for (const row of db.attachments) {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    if (!cipherId || !attachmentId) continue;
+    entries.push(`attachments/${cipherId}/${attachmentId}.bin`);
+  }
+  return entries;
+}
+
+function ensureRowArray(value: unknown, table: string): SqlRow[] {
+  if (!Array.isArray(value)) {
+    throw new Error(`Backup archive table ${table} is invalid`);
+  }
+  return value as SqlRow[];
+}
+
+function createZipEntries(files: Record<string, Uint8Array>): Record<string, Uint8Array | [Uint8Array, { level: 0 | 1 | 6 }]> {
+  const entries: Record<string, Uint8Array | [Uint8Array, { level: 0 | 1 | 6 }]> = {};
+  for (const [path, bytes] of Object.entries(files)) {
+    entries[path] = [bytes, { level: BACKUP_TEXT_COMPRESSION_LEVEL }];
+  }
+  return entries;
+}
+
+export interface ParseBackupArchiveOptions {
+  allowExternalAttachmentBlobs?: boolean;
+}
+
+export function parseBackupArchive(
+  bytes: Uint8Array,
+  options: ParseBackupArchiveOptions = {}
+): { payload: BackupPayload; files: Record<string, Uint8Array> } {
+  validateArchiveSize(bytes);
+  let zipped: Record<string, Uint8Array>;
+  try {
+    zipped = unzipSync(bytes);
+  } catch {
+    throw new Error('Invalid backup archive');
+  }
+
+  const entryNames = Object.keys(zipped);
+  if (entryNames.length > MAX_BACKUP_ARCHIVE_ENTRY_COUNT) {
+    throw new Error('Backup archive contains too many files');
+  }
+
+  let totalExtractedBytes = 0;
+  for (const entry of entryNames) {
+    const entryBytes = zipped[entry];
+    totalExtractedBytes += entryBytes.byteLength;
+    if (entry === 'db.json' && entryBytes.byteLength > MAX_BACKUP_DB_JSON_BYTES) {
+      throw new Error('Backup archive database payload is too large');
+    }
+    if (totalExtractedBytes > MAX_BACKUP_EXTRACTED_BYTES) {
+      throw new Error('Backup archive expands beyond the current restore limit');
+    }
+  }
+
+  const manifestBytes = zipped['manifest.json'];
+  const dbBytes = zipped['db.json'];
+  if (!manifestBytes || !dbBytes) {
+    throw new Error('Backup archive is missing manifest.json or db.json');
+  }
+
+  const decoder = new TextDecoder();
+  let manifest: BackupManifest;
+  let db: BackupPayload['db'];
+  try {
+    manifest = JSON.parse(decoder.decode(manifestBytes)) as BackupManifest;
+    db = JSON.parse(decoder.decode(dbBytes)) as BackupPayload['db'];
+  } catch {
+    throw new Error('Backup archive contains invalid JSON metadata');
+  }
+
+  if (manifest?.formatVersion !== BACKUP_FORMAT_VERSION) {
+    throw new Error('Unsupported backup format version');
+  }
+  if (!db || typeof db !== 'object') {
+    throw new Error('Backup archive database payload is invalid');
+  }
+
+  const externalAttachmentKeys = new Set<string>(
+    options.allowExternalAttachmentBlobs
+      ? (manifest.attachmentBlobs || []).map((item) => `attachments/${String(item.cipherId || '').trim()}/${String(item.attachmentId || '').trim()}.bin`)
+      : []
+  );
+  const requiredEntries = getRequiredZipEntries(db).filter((entry) => !externalAttachmentKeys.has(entry));
+  for (const entry of requiredEntries) {
+    if (!zipped[entry]) {
+      throw new Error(`Backup archive is missing required file: ${entry}`);
+    }
+  }
+
+  return {
+    payload: { manifest, db },
+    files: zipped,
+  };
+}
+
+export interface ValidateBackupPayloadOptions {
+  allowExternalAttachmentBlobs?: boolean;
+}
+
+export function validateBackupPayloadContents(
+  payload: BackupPayload,
+  files: Record<string, Uint8Array>,
+  options: ValidateBackupPayloadOptions = {}
+): void {
+  const configRows = ensureRowArray(payload.db.config, 'config');
+  const userRows = ensureRowArray(payload.db.users, 'users');
+  const revisionRows = ensureRowArray(payload.db.user_revisions, 'user_revisions');
+  const domainSettingsRows = ensureRowArray(payload.db.domain_settings || [], 'domain_settings');
+  const folderRows = ensureRowArray(payload.db.folders, 'folders');
+  const cipherRows = ensureRowArray(payload.db.ciphers, 'ciphers');
+  const attachmentRows = ensureRowArray(payload.db.attachments, 'attachments');
+  const accountPasskeyRows = ensureRowArray(payload.db.webauthn_credentials || [], 'webauthn_credentials');
+  const externalAttachmentKeys = new Set<string>(
+    options.allowExternalAttachmentBlobs
+      ? (payload.manifest.attachmentBlobs || []).map((item) => `attachments/${String(item.cipherId || '').trim()}/${String(item.attachmentId || '').trim()}.bin`)
+      : []
+  );
+
+  const userIds = new Set<string>();
+  for (const row of userRows) {
+    const id = String(row.id || '').trim();
+    const email = String(row.email || '').trim();
+    if (!id || !email) throw new Error('Backup archive contains an invalid user row');
+    if (userIds.has(id)) throw new Error(`Backup archive contains duplicate user id: ${id}`);
+    userIds.add(id);
+  }
+
+  for (const row of configRows) {
+    const key = String(row.key || '').trim();
+    if (!key) throw new Error('Backup archive contains an invalid config row');
+  }
+
+  for (const row of revisionRows) {
+    const userId = String(row.user_id || '').trim();
+    if (!userId || !userIds.has(userId)) {
+      throw new Error(`Backup archive contains a revision for an unknown user: ${userId || '(empty)'}`);
+    }
+  }
+
+  const domainSettingUserIds = new Set<string>();
+  for (const row of domainSettingsRows) {
+    const userId = String(row.user_id || '').trim();
+    if (!userId || !userIds.has(userId)) {
+      throw new Error(`Backup archive contains domain settings for an unknown user: ${userId || '(empty)'}`);
+    }
+    if (domainSettingUserIds.has(userId)) {
+      throw new Error(`Backup archive contains duplicate domain settings for user: ${userId}`);
+    }
+    domainSettingUserIds.add(userId);
+  }
+
+  const folderIds = new Set<string>();
+  for (const row of folderRows) {
+    const id = String(row.id || '').trim();
+    const userId = String(row.user_id || '').trim();
+    if (!id || !userIds.has(userId)) throw new Error('Backup archive contains an invalid folder row');
+    if (folderIds.has(id)) throw new Error(`Backup archive contains duplicate folder id: ${id}`);
+    folderIds.add(id);
+  }
+
+  const cipherIds = new Set<string>();
+  for (const row of cipherRows) {
+    const id = String(row.id || '').trim();
+    const userId = String(row.user_id || '').trim();
+    const folderId = String(row.folder_id || '').trim();
+    if (!id || !userIds.has(userId)) throw new Error('Backup archive contains an invalid cipher row');
+    if (folderId && !folderIds.has(folderId)) {
+      throw new Error(`Backup archive contains a cipher for an unknown folder: ${folderId}`);
+    }
+    if (cipherIds.has(id)) throw new Error(`Backup archive contains duplicate cipher id: ${id}`);
+    cipherIds.add(id);
+  }
+
+  for (const row of attachmentRows) {
+    const id = String(row.id || '').trim();
+    const cipherId = String(row.cipher_id || '').trim();
+    if (!id || !cipherId || !cipherIds.has(cipherId)) {
+      throw new Error('Backup archive contains an invalid attachment row');
+    }
+    const attachmentPath = `attachments/${cipherId}/${id}.bin`;
+    if (!files[attachmentPath] && !externalAttachmentKeys.has(attachmentPath)) {
+      throw new Error(`Backup archive is missing required file: attachments/${cipherId}/${id}.bin`);
+    }
+  }
+
+  const accountPasskeyIds = new Set<string>();
+  const accountPasskeyCredentialIds = new Set<string>();
+  for (const row of accountPasskeyRows) {
+    const id = String(row.id || '').trim();
+    const userId = String(row.user_id || '').trim();
+    const credentialId = String(row.credential_id || '').trim();
+    const publicKey = String(row.public_key || '').trim();
+    if (!id || !userIds.has(userId) || !credentialId || !publicKey) {
+      throw new Error('Backup archive contains an invalid account passkey row');
+    }
+    if (accountPasskeyIds.has(id)) throw new Error(`Backup archive contains duplicate account passkey id: ${id}`);
+    if (accountPasskeyCredentialIds.has(credentialId)) throw new Error(`Backup archive contains duplicate account passkey credential id: ${credentialId}`);
+    accountPasskeyIds.add(id);
+    accountPasskeyCredentialIds.add(credentialId);
+  }
+}
+
+export async function buildBackupArchive(
+  env: Env,
+  date: Date = new Date(),
+  options: BuildBackupArchiveOptions = {}
+): Promise<BackupArchiveBundle> {
+  const includeAttachments = options.includeAttachments !== false;
+  await options.progress?.({
+    step: 'collect_data',
+    fileName: '',
+    stageTitle: 'txt_backup_archive_progress_collect_title',
+    stageDetail: includeAttachments
+      ? 'txt_backup_archive_progress_collect_with_attachments_detail'
+      : 'txt_backup_archive_progress_collect_detail',
+    includeAttachments,
+  });
+  const encoder = new TextEncoder();
+  const [configRows, userRows, domainSettingsRows, revisionRows, folderRows, cipherRows, attachmentRows, accountPasskeyRows] = await Promise.all([
+    queryRows(env.DB, 'SELECT key, value FROM config ORDER BY key ASC'),
+    queryRows(env.DB, 'SELECT id, email, name, master_password_hint, master_password_hash, key, private_key, public_key, kdf_type, kdf_iterations, kdf_memory, kdf_parallelism, security_stamp, role, status, verify_devices, totp_secret, totp_recovery_code, created_at, updated_at FROM users ORDER BY created_at ASC'),
+    queryRows(env.DB, 'SELECT user_id, equivalent_domains, custom_equivalent_domains, excluded_global_equivalent_domains, updated_at FROM domain_settings ORDER BY user_id ASC'),
+    queryRows(env.DB, 'SELECT user_id, revision_date FROM user_revisions ORDER BY user_id ASC'),
+    queryRows(env.DB, 'SELECT id, user_id, name, created_at, updated_at FROM folders ORDER BY created_at ASC'),
+    queryRows(env.DB, 'SELECT id, user_id, type, folder_id, name, notes, favorite, data, reprompt, key, created_at, updated_at, archived_at, deleted_at FROM ciphers ORDER BY created_at ASC'),
+    queryRows(env.DB, 'SELECT id, cipher_id, file_name, size, size_name, key FROM attachments ORDER BY cipher_id ASC, id ASC'),
+    queryRows(env.DB, 'SELECT id, user_id, name, public_key, credential_id, counter, type, aa_guid, transports, encrypted_user_key, encrypted_public_key, encrypted_private_key, supports_prf, created_at, updated_at FROM webauthn_credentials ORDER BY created_at ASC'),
+  ]);
+  const exportedConfigRows = sanitizeConfigRowsForExport(configRows);
+  const exportedAttachmentRows = includeAttachments ? attachmentRows : [];
+  const attachmentBlobs: BackupManifestAttachmentBlob[] = exportedAttachmentRows.map((row) => {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    return {
+      cipherId,
+      attachmentId,
+      blobName: getAttachmentObjectKey(cipherId, attachmentId),
+      sizeBytes: Number(row.size || 0) || 0,
+    };
+  });
+
+  const manifestBase = {
+    formatVersion: BACKUP_FORMAT_VERSION,
+    exportedAt: date.toISOString(),
+    appVersion: APP_VERSION,
+    storageKind: getBlobStorageKind(env),
+    tableCounts: {
+      config: exportedConfigRows.length,
+      users: userRows.length,
+      domain_settings: domainSettingsRows.length,
+      user_revisions: revisionRows.length,
+      folders: folderRows.length,
+      ciphers: cipherRows.length,
+      attachments: exportedAttachmentRows.length,
+      webauthn_credentials: accountPasskeyRows.length,
+    },
+    includes: {
+      attachments: includeAttachments,
+    },
+    blobSummary: {
+      attachmentFiles: attachmentBlobs.length,
+      totalBytes: attachmentBlobs.reduce((sum, item) => sum + item.sizeBytes, 0),
+      largestObjectBytes: attachmentBlobs.reduce((max, item) => Math.max(max, item.sizeBytes), 0),
+    },
+    attachmentBlobs: includeAttachments ? attachmentBlobs : [],
+  } satisfies BackupManifest;
+
+  const files: Record<string, Uint8Array> = {
+    'manifest.json': encoder.encode(JSON.stringify(manifestBase, null, BACKUP_JSON_INDENT)),
+    'db.json': encoder.encode(JSON.stringify({
+      config: exportedConfigRows,
+      users: userRows,
+      domain_settings: domainSettingsRows,
+      user_revisions: revisionRows,
+      folders: folderRows,
+      ciphers: cipherRows,
+      attachments: exportedAttachmentRows,
+      webauthn_credentials: accountPasskeyRows,
+    }, null, BACKUP_JSON_INDENT)),
+  };
+
+  await options.progress?.({
+    step: 'package_archive',
+    fileName: '',
+    stageTitle: 'txt_backup_archive_progress_package_title',
+    stageDetail: includeAttachments
+      ? 'txt_backup_archive_progress_package_with_attachments_detail'
+      : 'txt_backup_archive_progress_package_detail',
+    includeAttachments,
+  });
+  const bytes = zipSync(createZipEntries(files));
+  const fileHashPrefix = (await sha256Hex(bytes)).slice(0, BACKUP_FILE_HASH_PREFIX_LENGTH);
+  const backupTimeZone = options.timeZone || 'UTC';
+  const fileName = buildBackupFileNameInTimeZone(date, fileHashPrefix, backupTimeZone);
+  await options.progress?.({
+    step: 'archive_ready',
+    fileName,
+    stageTitle: 'txt_backup_archive_progress_ready_title',
+    stageDetail: 'txt_backup_archive_progress_ready_detail',
+    includeAttachments,
+  });
+
+  return {
+    bytes,
+    fileName,
+    manifest: manifestBase,
+  };
+}

src/services/backup-config.ts

@@ -0,0 +1,653 @@
+import type { Env, User } from '../types';
+import { StorageService } from './storage';
+import {
+  type BackupSettingsPortableEnvelope,
+  decryptBackupSettingsRuntime,
+  encryptBackupSettingsEnvelope,
+  parseBackupSettingsEnvelope,
+} from './backup-settings-crypto';
+import {
+  BACKUP_DEFAULT_INTERVAL_HOURS,
+  BACKUP_DEFAULT_START_TIME,
+  BACKUP_DEFAULT_TIMEZONE,
+  type BackupDestinationConfig,
+  type BackupDestinationRecord,
+  type BackupDestinationType,
+  type BackupRuntimeState,
+  type BackupScheduleConfig,
+  type BackupSettings,
+  type S3BackupDestination,
+  type WebDavBackupDestination,
+  createBackupRandomId,
+  createDefaultBackupDestinationName,
+  createDefaultBackupScheduleConfig,
+  createDefaultBackupSettings as createSharedDefaultBackupSettings,
+} from '../../shared/backup-schema';
+
+export const BACKUP_SETTINGS_CONFIG_KEY = 'backup.settings.v1';
+export const BACKUP_SCHEDULER_WINDOW_MINUTES = 5;
+const MAX_BACKUP_DESTINATIONS = 24;
+
+export type {
+  BackupDestinationConfig,
+  BackupDestinationRecord,
+  BackupDestinationType,
+  BackupRuntimeState,
+  BackupScheduleConfig,
+  BackupSettings,
+  S3BackupDestination,
+  WebDavBackupDestination,
+} from '../../shared/backup-schema';
+
+export interface BackupSettingsInput {
+  destinations?: unknown;
+}
+
+export interface BackupSettingsRepairState {
+  needsRepair: boolean;
+  portable: BackupSettingsPortableEnvelope | null;
+}
+
+function defaultScheduleConfig(timezone: string = 'UTC'): BackupScheduleConfig {
+  return { ...createDefaultBackupScheduleConfig(assertValidTimeZone(timezone)) };
+}
+
+function isPlainObject(value: unknown): value is Record<string, unknown> {
+  return !!value && typeof value === 'object' && !Array.isArray(value);
+}
+
+function asTrimmedString(value: unknown): string {
+  return String(value ?? '').trim();
+}
+
+function normalizePath(value: unknown): string {
+  return asTrimmedString(value).replace(/\\/g, '/').replace(/^\/+|\/+$/g, '');
+}
+
+function assertValidTimeZone(timezone: string): string {
+  try {
+    new Intl.DateTimeFormat('en-US', { timeZone: timezone }).format(new Date());
+    return timezone;
+  } catch {
+    throw new Error('Invalid backup timezone');
+  }
+}
+
+function normalizeRetentionCount(value: unknown, fallback: number | null = 30): number | null {
+  if (value === undefined) return fallback;
+  if (value === null || String(value).trim() === '') return null;
+  const count = Number(value);
+  if (!Number.isInteger(count) || count < 1 || count > 1000) {
+    throw new Error('Backup retention count must be between 1 and 1000');
+  }
+  return count;
+}
+
+function normalizeIntervalHours(value: unknown, fallback: number = BACKUP_DEFAULT_INTERVAL_HOURS): number {
+  const raw = value === undefined || value === null || value === '' ? fallback : Number(value);
+  if (!Number.isInteger(raw) || raw < 1 || raw > 99) {
+    throw new Error('Backup interval hours must be between 1 and 99');
+  }
+  return raw;
+}
+
+function normalizeStartTime(value: unknown, fallback: string = BACKUP_DEFAULT_START_TIME): string {
+  const raw = asTrimmedString(value) || fallback;
+  const match = raw.match(/^(\d{1,2})(?::(\d{1,2}))?$/);
+  if (!match) {
+    throw new Error('Backup start time must be in HH:mm format');
+  }
+  const hour = Number(match[1]);
+  const minute = Number(match[2] ?? '0');
+  if (!Number.isInteger(hour) || !Number.isInteger(minute) || hour < 0 || hour > 23 || minute < 0 || minute > 59) {
+    throw new Error('Backup start time must be in HH:mm format');
+  }
+  return `${String(hour).padStart(2, '0')}:${String(minute).padStart(2, '0')}`;
+}
+
+function normalizeS3Destination(value: unknown, allowIncomplete = false): S3BackupDestination {
+  const source = isPlainObject(value) ? value : {};
+  const endpoint = asTrimmedString(source.endpoint);
+  const bucket = asTrimmedString(source.bucket);
+  const accessKeyId = asTrimmedString(source.accessKeyId);
+  const secretAccessKey = asTrimmedString(source.secretAccessKey);
+  const region = asTrimmedString(source.region) || 'auto';
+  const rootPath = normalizePath(source.rootPath);
+
+  if (!allowIncomplete || endpoint) {
+    if (!endpoint) throw new Error('S3 endpoint is required');
+    if (!/^https?:\/\//i.test(endpoint)) throw new Error('S3 endpoint must start with http:// or https://');
+  }
+  if (!allowIncomplete || bucket) {
+    if (!bucket) throw new Error('S3 bucket is required');
+  }
+  if (!allowIncomplete || accessKeyId) {
+    if (!accessKeyId) throw new Error('S3 access key is required');
+  }
+  if (!allowIncomplete || secretAccessKey) {
+    if (!secretAccessKey) throw new Error('S3 secret key is required');
+  }
+
+  return {
+    endpoint: endpoint ? endpoint.replace(/\/+$/, '') : '',
+    bucket,
+    region,
+    accessKeyId,
+    secretAccessKey,
+    rootPath,
+  };
+}
+
+function normalizeWebDavDestination(value: unknown, allowIncomplete = false): WebDavBackupDestination {
+  const source = isPlainObject(value) ? value : {};
+  const baseUrl = asTrimmedString(source.baseUrl);
+  const username = asTrimmedString(source.username);
+  const password = String(source.password ?? '');
+  const remotePath = normalizePath(source.remotePath);
+
+  if (!allowIncomplete || baseUrl) {
+    if (!baseUrl) throw new Error('WebDAV server URL is required');
+    if (!/^https?:\/\//i.test(baseUrl)) throw new Error('WebDAV server URL must start with http:// or https://');
+  }
+  if (!allowIncomplete || username) {
+    if (!username) throw new Error('WebDAV username is required');
+  }
+  if (!allowIncomplete || password) {
+    if (!password) throw new Error('WebDAV password is required');
+  }
+
+  return {
+    baseUrl: baseUrl ? baseUrl.replace(/\/+$/, '') : '',
+    username,
+    password,
+    remotePath,
+  };
+}
+
+function normalizeDestination(
+  destinationType: BackupDestinationType,
+  destination: unknown,
+  allowIncomplete = false
+): BackupDestinationConfig {
+  if (destinationType === 's3') return normalizeS3Destination(destination, allowIncomplete);
+  return normalizeWebDavDestination(destination, allowIncomplete);
+}
+
+function normalizeRuntime(value: unknown): BackupRuntimeState {
+  const source = isPlainObject(value) ? value : {};
+  const asIso = (input: unknown): string | null => {
+    const raw = asTrimmedString(input);
+    if (!raw) return null;
+    const date = new Date(raw);
+    return Number.isFinite(date.getTime()) ? date.toISOString() : null;
+  };
+  const asMaybeNumber = (input: unknown): number | null => {
+    if (input === null || input === undefined || input === '') return null;
+    const n = Number(input);
+    return Number.isFinite(n) && n >= 0 ? Math.floor(n) : null;
+  };
+  return {
+    lastAttemptAt: asIso(source.lastAttemptAt),
+    lastAttemptLocalDate: asTrimmedString(source.lastAttemptLocalDate) || null,
+    lastSuccessAt: asIso(source.lastSuccessAt),
+    lastErrorAt: asIso(source.lastErrorAt),
+    lastErrorMessage: asTrimmedString(source.lastErrorMessage) || null,
+    lastUploadedFileName: asTrimmedString(source.lastUploadedFileName) || null,
+    lastUploadedSizeBytes: asMaybeNumber(source.lastUploadedSizeBytes),
+    lastUploadedDestination: asTrimmedString(source.lastUploadedDestination) || null,
+  };
+}
+
+function defaultDestinationName(type: BackupDestinationType, index: number): string {
+  return createDefaultBackupDestinationName(type, index);
+}
+
+function getDestinationType(raw: unknown): BackupDestinationType {
+  const value = asTrimmedString(raw);
+  if (value === 'e3') return 's3';
+  if (value === 's3' || value === 'webdav') return value;
+  throw new Error('Backup destination type is invalid');
+}
+
+function normalizeDestinationRecord(
+  input: unknown,
+  previousById: Map<string, BackupDestinationRecord>,
+  index: number,
+  fallbackTimezone: string
+): BackupDestinationRecord {
+  if (!isPlainObject(input)) {
+    throw new Error('Backup destination is invalid');
+  }
+
+  const id = asTrimmedString(input.id) || createBackupRandomId();
+  const type = getDestinationType(input.type);
+  const previous = previousById.get(id);
+  const runtime = previous?.runtime ? normalizeRuntime(previous.runtime) : normalizeRuntime(input.runtime);
+  const name = asTrimmedString(input.name) || previous?.name || defaultDestinationName(type, index + 1);
+  const scheduleSource = isPlainObject(input.schedule) ? input.schedule : {};
+  const previousSchedule = previous?.schedule || defaultScheduleConfig(fallbackTimezone);
+  const retentionSource = Object.prototype.hasOwnProperty.call(scheduleSource, 'retentionCount')
+    ? scheduleSource.retentionCount
+    : previousSchedule.retentionCount;
+  const schedule: BackupScheduleConfig = {
+    enabled: !!(scheduleSource.enabled ?? previousSchedule.enabled),
+    intervalHours: normalizeIntervalHours(
+      scheduleSource.intervalHours ?? previousSchedule.intervalHours,
+      previousSchedule.intervalHours || BACKUP_DEFAULT_INTERVAL_HOURS
+    ),
+    startTime: normalizeStartTime(
+      scheduleSource.startTime ?? previousSchedule.startTime,
+      previousSchedule.startTime || BACKUP_DEFAULT_START_TIME
+    ),
+    timezone: assertValidTimeZone(asTrimmedString(scheduleSource.timezone ?? previousSchedule.timezone) || fallbackTimezone || BACKUP_DEFAULT_TIMEZONE),
+    retentionCount: normalizeRetentionCount(retentionSource, previousSchedule.retentionCount),
+  };
+
+  const destination = normalizeDestination(type, input.destination, !schedule.enabled);
+
+  return {
+    id,
+    name,
+    type,
+    includeAttachments: typeof input.includeAttachments === 'boolean'
+      ? input.includeAttachments
+      : previous?.includeAttachments ?? false,
+    destination,
+    schedule,
+    runtime,
+  };
+}
+
+function parseLegacyBackupSettings(rawValue: Record<string, unknown>, fallbackTimezone: string): BackupSettings {
+  const legacyFrequency = asTrimmedString(rawValue.frequency).toLowerCase();
+  const intervalHours = legacyFrequency === 'weekly'
+    ? 24 * 7
+    : legacyFrequency === 'monthly'
+      ? 24 * 30
+      : BACKUP_DEFAULT_INTERVAL_HOURS;
+  const destinationTypeRaw = asTrimmedString(rawValue.destinationType);
+  const destinationType: BackupDestinationType =
+    destinationTypeRaw === 'e3' || destinationTypeRaw === 's3' || destinationTypeRaw === 'webdav'
+      ? getDestinationType(destinationTypeRaw)
+      : 'webdav';
+  const destination = {
+    id: createBackupRandomId(),
+    name: defaultDestinationName(destinationType, 1),
+    type: destinationType,
+    includeAttachments: false,
+    destination: normalizeDestination(destinationType, rawValue.destination),
+    schedule: {
+      enabled: !!rawValue.enabled,
+      intervalHours,
+      startTime: BACKUP_DEFAULT_START_TIME,
+      timezone: assertValidTimeZone(asTrimmedString(rawValue.timezone) || fallbackTimezone || BACKUP_DEFAULT_TIMEZONE),
+      retentionCount: 30,
+    },
+    runtime: normalizeRuntime(rawValue.runtime),
+  } satisfies BackupDestinationRecord;
+
+  return {
+    destinations: [destination],
+  };
+}
+
+function parseDestinations(
+  rawDestinations: unknown,
+  previousById: Map<string, BackupDestinationRecord>,
+  fallbackTimezone: string
+): BackupDestinationRecord[] {
+  if (!Array.isArray(rawDestinations)) {
+    throw new Error('Backup destinations are invalid');
+  }
+  if (rawDestinations.length > MAX_BACKUP_DESTINATIONS) {
+    throw new Error(`You can save up to ${MAX_BACKUP_DESTINATIONS} backup destinations`);
+  }
+
+  const destinations = rawDestinations.map((entry, index) => normalizeDestinationRecord(entry, previousById, index, fallbackTimezone));
+  const ids = new Set<string>();
+  for (const destination of destinations) {
+    if (ids.has(destination.id)) {
+      throw new Error('Backup destination ids must be unique');
+    }
+    ids.add(destination.id);
+  }
+  return destinations;
+}
+
+function mapDestinationsById(destinations: BackupDestinationRecord[]): Map<string, BackupDestinationRecord> {
+  return new Map(destinations.map((destination) => [destination.id, destination]));
+}
+
+export function getDefaultBackupSettings(timezone: string = 'UTC'): BackupSettings {
+  return createSharedDefaultBackupSettings(assertValidTimeZone(timezone));
+}
+
+export function parseBackupSettings(raw: string | null, fallbackTimezone: string = 'UTC'): BackupSettings {
+  if (!raw) return getDefaultBackupSettings(fallbackTimezone);
+  try {
+    const parsed = JSON.parse(raw) as Record<string, unknown>;
+    if (Array.isArray(parsed.destinations)) {
+      const globalTimezone = assertValidTimeZone(asTrimmedString(parsed.timezone) || fallbackTimezone || BACKUP_DEFAULT_TIMEZONE);
+      const globalEnabled = !!parsed.enabled;
+      const activeDestinationIdRaw = asTrimmedString(parsed.activeDestinationId);
+      const globalFrequency = asTrimmedString(parsed.frequency).toLowerCase();
+      const globalIntervalHours = globalFrequency === 'weekly'
+        ? 24 * 7
+        : globalFrequency === 'monthly'
+          ? 24 * 30
+          : BACKUP_DEFAULT_INTERVAL_HOURS;
+      const previousById = new Map<string, BackupDestinationRecord>();
+      const normalizedEntries = (parsed.destinations as unknown[]).map((entry) => {
+        if (!isPlainObject(entry)) return entry;
+        if (isPlainObject(entry.schedule)) return entry;
+        const entryId = asTrimmedString(entry.id);
+        const scheduleEnabled = globalEnabled && (!activeDestinationIdRaw || entryId === activeDestinationIdRaw);
+        return {
+          ...entry,
+          schedule: {
+            enabled: scheduleEnabled,
+            intervalHours: globalIntervalHours,
+            startTime: BACKUP_DEFAULT_START_TIME,
+            timezone: globalTimezone,
+            retentionCount: 30,
+          },
+        };
+      });
+      return {
+        destinations: parseDestinations(normalizedEntries, previousById, fallbackTimezone),
+      };
+    }
+    return parseLegacyBackupSettings(parsed, fallbackTimezone);
+  } catch {
+    return getDefaultBackupSettings(fallbackTimezone);
+  }
+}
+
+export function normalizeBackupSettingsInput(
+  input: BackupSettingsInput,
+  previous: BackupSettings
+): BackupSettings {
+  if (!isPlainObject(input)) {
+    throw new Error('Backup settings payload is invalid');
+  }
+
+  const previousById = mapDestinationsById(previous.destinations);
+  const rawDestinations = input.destinations ?? previous.destinations;
+  const destinations = parseDestinations(rawDestinations, previousById, BACKUP_DEFAULT_TIMEZONE);
+
+  return {
+    destinations,
+  };
+}
+
+export function serializeBackupSettings(settings: BackupSettings): string {
+  return JSON.stringify(settings);
+}
+
+export async function loadBackupSettings(storage: StorageService, env: Env, fallbackTimezone: string = 'UTC'): Promise<BackupSettings> {
+  const raw = await storage.getConfigValue(BACKUP_SETTINGS_CONFIG_KEY);
+  if (!raw) {
+    const settings = getDefaultBackupSettings(fallbackTimezone);
+    await saveBackupSettings(storage, env, settings);
+    return settings;
+  }
+
+  const envelope = parseBackupSettingsEnvelope(raw);
+  if (!envelope) {
+    const settings = parseBackupSettings(raw, fallbackTimezone);
+    await saveBackupSettings(storage, env, settings);
+    return settings;
+  }
+
+  try {
+    const decrypted = await decryptBackupSettingsRuntime(raw, env);
+    return parseBackupSettings(decrypted, fallbackTimezone);
+  } catch {
+    throw new Error('Backup settings need administrator reactivation after restore');
+  }
+}
+
+export async function saveBackupSettings(storage: StorageService, env: Env, settings: BackupSettings): Promise<void> {
+  const users = await storage.getAllUsers();
+  const encrypted = await encryptBackupSettingsEnvelope(serializeBackupSettings(settings), env, users);
+  await storage.setConfigValue(BACKUP_SETTINGS_CONFIG_KEY, encrypted);
+}
+
+export async function normalizeImportedBackupSettings(storage: StorageService, env: Env, fallbackTimezone: string = 'UTC'): Promise<void> {
+  const raw = await storage.getConfigValue(BACKUP_SETTINGS_CONFIG_KEY);
+  if (!raw) return;
+  const users = await storage.getAllUsers();
+  const normalized = await normalizeImportedBackupSettingsValue(raw, env, users, fallbackTimezone);
+  if (normalized !== null) {
+    await storage.setConfigValue(BACKUP_SETTINGS_CONFIG_KEY, normalized);
+  }
+}
+
+export async function normalizeImportedBackupSettingsValue(
+  raw: string | null,
+  env: Env,
+  users: Pick<User, 'id' | 'publicKey' | 'role' | 'status'>[],
+  fallbackTimezone: string = 'UTC'
+): Promise<string | null> {
+  if (!raw) return null;
+  const envelope = parseBackupSettingsEnvelope(raw);
+  if (envelope) {
+    try {
+      const decrypted = await decryptBackupSettingsRuntime(raw, env);
+      const settings = parseBackupSettings(decrypted, fallbackTimezone);
+      return encryptBackupSettingsEnvelope(serializeBackupSettings(settings), env, users);
+    } catch {
+      // Keep imported portable recovery data intact until an admin signs in and repairs it.
+      return raw;
+    }
+  }
+  const settings = parseBackupSettings(raw, fallbackTimezone);
+  return encryptBackupSettingsEnvelope(serializeBackupSettings(settings), env, users);
+}
+
+export async function getBackupSettingsRepairState(storage: StorageService, env: Env, fallbackTimezone: string = 'UTC'): Promise<BackupSettingsRepairState> {
+  const raw = await storage.getConfigValue(BACKUP_SETTINGS_CONFIG_KEY);
+  if (!raw) {
+    const settings = getDefaultBackupSettings(fallbackTimezone);
+    await saveBackupSettings(storage, env, settings);
+    return { needsRepair: false, portable: null };
+  }
+
+  const envelope = parseBackupSettingsEnvelope(raw);
+  if (!envelope) {
+    const settings = parseBackupSettings(raw, fallbackTimezone);
+    await saveBackupSettings(storage, env, settings);
+    return { needsRepair: false, portable: null };
+  }
+
+  try {
+    await decryptBackupSettingsRuntime(raw, env);
+    return { needsRepair: false, portable: null };
+  } catch {
+    return {
+      needsRepair: true,
+      portable: envelope.portable,
+    };
+  }
+}
+
+export async function repairBackupSettings(storage: StorageService, env: Env, settings: BackupSettings): Promise<void> {
+  await saveBackupSettings(storage, env, settings);
+}
+
+export function findBackupDestination(
+  settings: BackupSettings,
+  destinationId: string | null | undefined
+): BackupDestinationRecord | null {
+  const normalizedId = asTrimmedString(destinationId);
+  if (!normalizedId) return null;
+  return settings.destinations.find((destination) => destination.id === normalizedId) || null;
+}
+
+export function requireBackupDestination(settings: BackupSettings, destinationId?: string | null): BackupDestinationRecord {
+  const destination = destinationId ? findBackupDestination(settings, destinationId) : settings.destinations[0] || null;
+  if (!destination) {
+    throw new Error('Backup destination not found');
+  }
+  return destination;
+}
+
+function getDateTimeParts(date: Date, timezone: string): { year: string; month: string; day: string; hour: string; minute: string } {
+  const formatter = new Intl.DateTimeFormat('en-CA', {
+    timeZone: timezone,
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    hourCycle: 'h23',
+  });
+  const parts = formatter.formatToParts(date);
+  const pick = (type: string): string => parts.find((part) => part.type === type)?.value || '';
+  return {
+    year: pick('year'),
+    month: pick('month'),
+    day: pick('day'),
+    hour: pick('hour'),
+    minute: pick('minute'),
+  };
+}
+
+export function getBackupLocalDateKey(date: Date, timezone: string): string {
+  const parts = getDateTimeParts(date, timezone);
+  return `${parts.year}-${parts.month}-${parts.day}`;
+}
+
+export function getBackupLocalTime(date: Date, timezone: string): string {
+  const parts = getDateTimeParts(date, timezone);
+  return `${parts.hour}:${parts.minute}`;
+}
+
+function parseLocalDateKey(dateKey: string): { year: number; month: number; day: number } | null {
+  const match = String(dateKey || '').match(/^(\d{4})-(\d{2})-(\d{2})$/);
+  if (!match) return null;
+  const year = Number(match[1]);
+  const month = Number(match[2]);
+  const day = Number(match[3]);
+  if (!Number.isInteger(year) || !Number.isInteger(month) || !Number.isInteger(day)) return null;
+  return { year, month, day };
+}
+
+function getUtcDateForLocalTime(timezone: string, year: number, month: number, day: number, hour: number, minute: number): Date {
+  const utcGuess = Date.UTC(year, month - 1, day, hour, minute, 0, 0);
+  const actual = getDateTimeParts(new Date(utcGuess), timezone);
+  const actualUtc = Date.UTC(
+    Number(actual.year),
+    Number(actual.month) - 1,
+    Number(actual.day),
+    Number(actual.hour),
+    Number(actual.minute),
+    0,
+    0
+  );
+  const desiredUtc = Date.UTC(year, month - 1, day, hour, minute, 0, 0);
+  return new Date(utcGuess - (actualUtc - desiredUtc));
+}
+
+function getBackupSlotStartsForLocalDay(
+  dateKey: string,
+  timezone: string,
+  startTime: string,
+  intervalHours: number
+): Date[] {
+  const parsedDate = parseLocalDateKey(dateKey);
+  const parsedTime = normalizeStartTime(startTime).split(':').map((value) => Number(value));
+  if (!parsedDate || parsedTime.length !== 2) return [];
+
+  const [hour, minute] = parsedTime;
+  const firstSlot = getUtcDateForLocalTime(timezone, parsedDate.year, parsedDate.month, parsedDate.day, hour, minute);
+  const nextLocalDay = new Date(Date.UTC(parsedDate.year, parsedDate.month - 1, parsedDate.day, 0, 0, 0, 0));
+  nextLocalDay.setUTCDate(nextLocalDay.getUTCDate() + 1);
+  const nextDay = getUtcDateForLocalTime(
+    timezone,
+    nextLocalDay.getUTCFullYear(),
+    nextLocalDay.getUTCMonth() + 1,
+    nextLocalDay.getUTCDate(),
+    0,
+    0
+  );
+  const intervalMs = intervalHours * 60 * 60 * 1000;
+  const slots: Date[] = [];
+
+  for (let slotMs = firstSlot.getTime(); slotMs < nextDay.getTime(); slotMs += intervalMs) {
+    slots.push(new Date(slotMs));
+  }
+  return slots;
+}
+
+export function hasBackupSlotBetween(
+  destination: BackupDestinationRecord,
+  startInclusive: Date,
+  endExclusive: Date
+): boolean {
+  if (!destination.schedule.enabled) return false;
+  const startMs = startInclusive.getTime();
+  const endMs = endExclusive.getTime();
+  if (!Number.isFinite(startMs) || !Number.isFinite(endMs) || endMs <= startMs) return false;
+
+  const lastAttemptAt = destination.runtime.lastAttemptAt ? new Date(destination.runtime.lastAttemptAt) : null;
+  const lastAttemptMs = lastAttemptAt && Number.isFinite(lastAttemptAt.getTime())
+    ? lastAttemptAt.getTime()
+    : Number.NEGATIVE_INFINITY;
+
+  const dayCursor = new Date(startMs);
+  dayCursor.setUTCHours(0, 0, 0, 0);
+  const endDay = new Date(endMs);
+  endDay.setUTCHours(0, 0, 0, 0);
+  const checkedLocalDateKeys = new Set<string>();
+
+  while (dayCursor.getTime() <= endDay.getTime() + 24 * 60 * 60 * 1000) {
+    const localDateKey = getBackupLocalDateKey(dayCursor, destination.schedule.timezone);
+    if (!checkedLocalDateKeys.has(localDateKey)) {
+      checkedLocalDateKeys.add(localDateKey);
+      const slotStarts = getBackupSlotStartsForLocalDay(
+        localDateKey,
+        destination.schedule.timezone,
+        destination.schedule.startTime,
+        destination.schedule.intervalHours
+      );
+      for (const slotStart of slotStarts) {
+        const slotStartMs = slotStart.getTime();
+        if (slotStartMs < startMs || slotStartMs >= endMs) continue;
+        if (lastAttemptMs >= slotStartMs) continue;
+        return true;
+      }
+    }
+    dayCursor.setUTCDate(dayCursor.getUTCDate() + 1);
+  }
+
+  return false;
+}
+
+export function isBackupDueNow(
+  destination: BackupDestinationRecord,
+  now: Date,
+  windowMinutes: number = BACKUP_SCHEDULER_WINDOW_MINUTES
+): boolean {
+  if (!destination.schedule.enabled) return false;
+  const toleranceMs = Math.max(1, windowMinutes) * 60 * 1000;
+  const lastAttemptAt = destination.runtime.lastAttemptAt ? new Date(destination.runtime.lastAttemptAt) : null;
+  const lastAttemptMs = lastAttemptAt && Number.isFinite(lastAttemptAt.getTime())
+    ? lastAttemptAt.getTime()
+    : Number.NEGATIVE_INFINITY;
+  const localDateKey = getBackupLocalDateKey(now, destination.schedule.timezone);
+  const slotStarts = getBackupSlotStartsForLocalDay(
+    localDateKey,
+    destination.schedule.timezone,
+    destination.schedule.startTime,
+    destination.schedule.intervalHours
+  );
+
+  for (const slotStart of slotStarts) {
+    const slotStartMs = slotStart.getTime();
+    if (now.getTime() < slotStartMs || now.getTime() >= slotStartMs + toleranceMs) continue;
+    if (lastAttemptMs >= slotStartMs) return false;
+    return true;
+  }
+  return false;
+}

src/services/backup-import.ts

@@ -0,0 +1,954 @@
+import type { Env, User } from '../types';
+import { KV_MAX_OBJECT_BYTES, deleteBlobObject, getAttachmentObjectKey, getBlobStorageKind, putBlobObject } from './blob-store';
+import { BACKUP_SETTINGS_CONFIG_KEY, normalizeImportedBackupSettingsValue } from './backup-config';
+import {
+  type BackupManifestAttachmentBlob,
+  type BackupPayload,
+  parseBackupArchive,
+  validateBackupPayloadContents,
+} from './backup-archive';
+
+// CONTRACT:
+// Restore is intentionally whitelist-based. Old backups may contain retired
+// fields, but only the columns listed here are imported. Keep this file in sync
+// with src/services/backup-archive.ts whenever backup contents change.
+//
+// WHEN CHANGING THIS:
+// - Update BackupTableName, BACKUP_TABLES, reset statements, prepared payloads,
+//   shadow-table count validation, insert column lists, and frontend import
+//   count types together.
+// - Do not import users.api_key, even if an older backup contains it.
+type SqlRow = Record<string, string | number | null>;
+type BackupTableName =
+  | 'config'
+  | 'users'
+  | 'domain_settings'
+  | 'user_revisions'
+  | 'webauthn_credentials'
+  | 'folders'
+  | 'ciphers'
+  | 'attachments';
+
+const BACKUP_TABLES: BackupTableName[] = [
+  'config',
+  'users',
+  'domain_settings',
+  'user_revisions',
+  'webauthn_credentials',
+  'folders',
+  'ciphers',
+  'attachments',
+];
+
+function shadowTableName(table: BackupTableName): string {
+  return `${table}__restore`;
+}
+
+export interface BackupImportResultBody {
+  object: 'instance-backup-import';
+  imported: {
+    config: number;
+    users: number;
+    domainSettings: number;
+    userRevisions: number;
+    webauthnCredentials: number;
+    folders: number;
+    ciphers: number;
+    attachments: number;
+    attachmentFiles: number;
+  };
+  skipped: {
+    reason: string | null;
+    attachments: number;
+    items: Array<{
+      kind: 'attachment';
+      path: string;
+      sizeBytes: number;
+    }>;
+  };
+}
+
+export interface BackupImportExecutionResult {
+  result: BackupImportResultBody;
+  auditActorUserId: string | null;
+}
+
+async function queryRows(db: D1Database, sql: string, ...values: unknown[]): Promise<SqlRow[]> {
+  const response = await db.prepare(sql).bind(...values).all<SqlRow>();
+  return (response.results || []).map((row) => ({ ...row }));
+}
+
+async function getTableCreateSql(db: D1Database, table: BackupTableName): Promise<string> {
+  const row = await db
+    .prepare("SELECT sql FROM sqlite_master WHERE type = 'table' AND name = ?")
+    .bind(table)
+    .first<{ sql: string | null }>();
+  const sql = String(row?.sql || '').trim();
+  if (!sql) {
+    throw new Error(`Restore shadow schema is missing table definition for ${table}`);
+  }
+  return sql;
+}
+
+function buildShadowTableCreateSql(createSql: string, table: BackupTableName): string {
+  const tablePattern = new RegExp(`^CREATE TABLE(?:\\s+IF NOT EXISTS)?\\s+(?:\"${table}\"|${table})(?=\\s*\\()`, 'i');
+  let next = createSql.replace(tablePattern, `CREATE TABLE "${shadowTableName(table)}"`);
+  if (next === createSql) {
+    throw new Error(`Restore shadow schema could not rewrite CREATE TABLE statement for ${table}`);
+  }
+  for (const currentTable of BACKUP_TABLES) {
+    const referencePattern = new RegExp(`\\bREFERENCES\\s+(?:\"${currentTable}\"|${currentTable})(?=\\s*\\()`, 'gi');
+    next = next.replace(
+      referencePattern,
+      `REFERENCES "${shadowTableName(currentTable)}"`
+    );
+  }
+  return next;
+}
+
+async function resetRestoreArtifacts(db: D1Database): Promise<void> {
+  const dropStatements = BACKUP_TABLES
+    .slice()
+    .reverse()
+    .map((table) => db.prepare(`DROP TABLE IF EXISTS ${shadowTableName(table)}`));
+  if (dropStatements.length) {
+    await db.batch(dropStatements);
+  }
+}
+
+async function createShadowTables(db: D1Database): Promise<void> {
+  const createStatements: D1PreparedStatement[] = [];
+  for (const table of BACKUP_TABLES) {
+    const createSql = await getTableCreateSql(db, table);
+    createStatements.push(db.prepare(buildShadowTableCreateSql(createSql, table)));
+  }
+  await db.batch(createStatements);
+}
+
+async function validateShadowTableCounts(
+  db: D1Database,
+  expectedCounts: Partial<Record<BackupTableName, number>>
+): Promise<void> {
+  await Promise.all(BACKUP_TABLES.map(async (table) => {
+    const expected = expectedCounts[table] ?? 0;
+    const row = await db.prepare(`SELECT COUNT(*) AS count FROM ${shadowTableName(table)}`).first<{ count: number }>();
+    const actual = Number(row?.count || 0);
+    if (actual !== expected) {
+      throw new Error(`Restore shadow validation failed for ${table}: expected ${expected}, received ${actual}`);
+    }
+  }));
+}
+
+async function swapShadowTablesIntoPlace(db: D1Database): Promise<void> {
+  const statements: D1PreparedStatement[] = [];
+  // Commit by replacing live table contents from validated shadow tables.
+  // This avoids D1 schema-rename edge cases while keeping current data intact
+  // until the final batch succeeds.
+  for (const sql of buildResetImportTargetStatements(db)) {
+    statements.push(sql);
+  }
+  for (const table of BACKUP_TABLES) {
+    statements.push(db.prepare(`INSERT INTO ${table} SELECT * FROM ${shadowTableName(table)}`));
+  }
+  await db.batch(statements);
+}
+
+async function ensureImportTargetIsFresh(db: D1Database): Promise<void> {
+  const counts = await Promise.all([
+    db.prepare('SELECT COUNT(*) AS count FROM ciphers').first<{ count: number }>(),
+    db.prepare('SELECT COUNT(*) AS count FROM folders').first<{ count: number }>(),
+    db.prepare('SELECT COUNT(*) AS count FROM attachments').first<{ count: number }>(),
+    db.prepare('SELECT COUNT(*) AS count FROM sends').first<{ count: number }>(),
+  ]);
+  const total = counts.reduce((sum, row) => sum + Number(row?.count || 0), 0);
+  if (total > 0) {
+    throw new Error('Backup import requires a fresh instance with no vault or send data');
+  }
+}
+
+function buildResetImportTargetStatements(db: D1Database): D1PreparedStatement[] {
+  return [
+    'DELETE FROM attachments',
+    'DELETE FROM ciphers',
+    'DELETE FROM folders',
+    'DELETE FROM webauthn_credentials',
+    'DELETE FROM domain_settings',
+    'DELETE FROM user_revisions',
+    'DELETE FROM users',
+    'DELETE FROM config',
+  ].map((sql) => db.prepare(sql));
+}
+
+async function collectCurrentBlobKeys(db: D1Database): Promise<Set<string>> {
+  const keys = new Set<string>();
+  const attachmentRows = await queryRows(
+    db,
+    `SELECT a.id, a.cipher_id
+     FROM attachments a
+     INNER JOIN ciphers c ON c.id = a.cipher_id`
+  );
+  for (const row of attachmentRows) {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    if (!cipherId || !attachmentId) continue;
+    keys.add(getAttachmentObjectKey(cipherId, attachmentId));
+  }
+  return keys;
+}
+
+const KV_BLOB_SKIP_REASON = 'Cloudflare KV object size limit (25 MB)';
+const BLOB_STORAGE_UNAVAILABLE_SKIP_REASON = 'Attachment storage is not configured';
+const ATTACHMENT_RESTORE_FAILED_REASON = 'Some attachments could not be restored and were skipped';
+
+interface BackupImportSkipSummary {
+  reason: string | null;
+  attachments: number;
+  items: Array<{
+    kind: 'attachment';
+    path: string;
+    sizeBytes: number;
+  }>;
+}
+
+interface PreparedBackupImportPayload {
+  payload: BackupPayload;
+  skipped: BackupImportSkipSummary;
+}
+
+interface AttachmentRestoreResult {
+  imported: number;
+  restoredAttachments: SqlRow[];
+  skipped: BackupImportSkipSummary;
+}
+
+interface RemoteAttachmentSource {
+  loadAttachment(blobName: string): Promise<Uint8Array | null>;
+}
+
+export interface BackupRestoreProgressEvent {
+  source: 'local' | 'remote';
+  step: string;
+  fileName: string;
+  stageTitle: string;
+  stageDetail: string;
+  replaceExisting: boolean;
+  done?: boolean;
+  ok?: boolean;
+  error?: string | null;
+}
+
+export type BackupRestoreProgressReporter = (event: BackupRestoreProgressEvent) => Promise<void> | void;
+
+function attachmentRowKey(row: SqlRow): string {
+  const attachmentId = String(row.id || '').trim();
+  const cipherId = String(row.cipher_id || '').trim();
+  return `${cipherId}/${attachmentId}`;
+}
+
+function cloneRows(rows: SqlRow[]): SqlRow[] {
+  return rows.map((row) => ({ ...row }));
+}
+
+function upsertConfigRow(rows: SqlRow[], key: string, value: string): SqlRow[] {
+  let replaced = false;
+  const nextRows = rows.map((row) => {
+    if (String(row.key || '').trim() !== key) return { ...row };
+    replaced = true;
+    return { ...row, key, value };
+  });
+  if (!replaced) {
+    nextRows.push({ key, value });
+  }
+  return nextRows;
+}
+
+async function prepareImportedConfigRows(
+  env: Env,
+  configRows: SqlRow[],
+  userRows: SqlRow[]
+): Promise<SqlRow[]> {
+  let nextConfigRows = cloneRows(configRows || []);
+  const rawBackupSettings = nextConfigRows.find((row) => String(row.key || '').trim() === BACKUP_SETTINGS_CONFIG_KEY);
+  const normalizedBackupSettings = await normalizeImportedBackupSettingsValue(
+    typeof rawBackupSettings?.value === 'string' ? rawBackupSettings.value : null,
+    env,
+    userRows.map((row) => ({
+      id: String(row.id || '').trim(),
+      publicKey: typeof row.public_key === 'string' ? row.public_key : null,
+      role: String(row.role || '').trim() as User['role'],
+      status: String(row.status || '').trim() as User['status'],
+    })),
+    'UTC'
+  );
+  if (normalizedBackupSettings !== null) {
+    nextConfigRows = upsertConfigRow(nextConfigRows, BACKUP_SETTINGS_CONFIG_KEY, normalizedBackupSettings);
+  }
+  nextConfigRows = upsertConfigRow(nextConfigRows, 'registered', 'true');
+  return nextConfigRows;
+}
+
+async function importPreparedBackupRows(db: D1Database, payload: BackupPayload['db'], env: Env): Promise<BackupPayload['db']> {
+  const preparedDb: BackupPayload['db'] = {
+    config: await prepareImportedConfigRows(env, payload.config || [], payload.users || []),
+    users: cloneRows(payload.users || []).map((row) => ({
+      ...row,
+      verify_devices: row.verify_devices ?? 1,
+    })),
+    domain_settings: cloneRows(payload.domain_settings || []),
+    user_revisions: cloneRows(payload.user_revisions || []),
+    webauthn_credentials: cloneRows(payload.webauthn_credentials || []),
+    folders: cloneRows(payload.folders || []),
+    ciphers: cloneRows(payload.ciphers || []).map((row) => ({
+      ...row,
+      archived_at: row.archived_at ?? null,
+    })),
+    attachments: cloneRows(payload.attachments || []),
+  };
+  await importBackupRows(db, preparedDb, true);
+  return preparedDb;
+}
+
+function prepareImportPayloadForTarget(env: Env, payload: BackupPayload, files: Record<string, Uint8Array>): PreparedBackupImportPayload {
+  const storageKind = getBlobStorageKind(env);
+  if (storageKind === 'r2') {
+    return {
+      payload,
+      skipped: {
+        reason: null,
+        attachments: 0,
+        items: [],
+      },
+    };
+  }
+
+  if (storageKind === null) {
+    const skippedItems = (payload.db.attachments || []).map((row) => {
+      const cipherId = String(row.cipher_id || '').trim();
+      const attachmentId = String(row.id || '').trim();
+      return {
+        kind: 'attachment' as const,
+        path: `attachments/${cipherId}/${attachmentId}.bin`,
+        sizeBytes: Number(row.size || 0) || 0,
+      };
+    });
+
+    const result = {
+      payload: {
+        ...payload,
+        db: {
+          ...payload.db,
+          attachments: [],
+        },
+      },
+      skipped: {
+        reason: skippedItems.length ? BLOB_STORAGE_UNAVAILABLE_SKIP_REASON : null,
+        attachments: skippedItems.length,
+        items: skippedItems,
+      },
+    };
+    return result;
+  }
+
+  const oversizedAttachmentPaths = new Set<string>();
+  const skippedItems: BackupImportSkipSummary['items'] = [];
+
+  for (const entry of Object.keys(files)) {
+    if (!entry.endsWith('.bin')) continue;
+    const sizeBytes = files[entry].byteLength;
+    if (sizeBytes <= KV_MAX_OBJECT_BYTES) continue;
+    if (entry.startsWith('attachments/')) {
+      oversizedAttachmentPaths.add(entry);
+      skippedItems.push({ kind: 'attachment', path: entry, sizeBytes });
+    }
+  }
+
+  const nextAttachments = (payload.db.attachments || []).filter((row) => {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    if (!cipherId || !attachmentId) return false;
+    return !oversizedAttachmentPaths.has(`attachments/${cipherId}/${attachmentId}.bin`);
+  });
+
+  const nextPayload: BackupPayload = {
+    ...payload,
+    db: {
+      ...payload.db,
+      attachments: nextAttachments,
+    },
+  };
+
+  const needsKvBlobStorage = nextAttachments.length > 0;
+
+  if (needsKvBlobStorage && !env.ATTACHMENTS_KV) {
+    throw new Error('Backup restore requires ATTACHMENTS_KV when using KV blob storage');
+  }
+
+  const result = {
+    payload: nextPayload,
+    skipped: {
+      reason: skippedItems.length ? KV_BLOB_SKIP_REASON : null,
+      attachments: skippedItems.length,
+      items: skippedItems,
+    },
+  };
+  return result;
+}
+
+function buildInsertStatements(db: D1Database, table: string, columns: string[], rows: SqlRow[], upsert = false): D1PreparedStatement[] {
+  if (!rows.length) return [];
+  const placeholders = `(${columns.map(() => '?').join(', ')})`;
+  const sql = `INSERT ${upsert ? 'OR REPLACE ' : ''}INTO ${table} (${columns.join(', ')}) VALUES ${placeholders}`;
+  return rows.map((row) => db.prepare(sql).bind(...columns.map((column) => row[column] ?? null)));
+}
+
+async function runInsertBatch(db: D1Database, table: string, statements: D1PreparedStatement[]): Promise<void> {
+  if (!statements.length) return;
+  try {
+    await db.batch(statements);
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    throw new Error(`Restore insert failed for ${table}: ${message}`);
+  }
+}
+
+async function restoreBlobFiles(env: Env, db: BackupPayload['db'], files: Record<string, Uint8Array>): Promise<AttachmentRestoreResult> {
+  const restoredAttachments: SqlRow[] = [];
+  const skippedItems: BackupImportSkipSummary['items'] = [];
+
+  for (const row of db.attachments || []) {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    if (!cipherId || !attachmentId) continue;
+    const key = `attachments/${cipherId}/${attachmentId}.bin`;
+    const bytes = files[key];
+    if (!bytes) {
+      skippedItems.push({
+        kind: 'attachment',
+        path: key,
+        sizeBytes: Number(row.size || 0) || 0,
+      });
+      continue;
+    }
+    try {
+      await putBlobObject(env, getAttachmentObjectKey(cipherId, attachmentId), bytes, {
+        size: bytes.byteLength,
+        contentType: 'application/octet-stream',
+      });
+      restoredAttachments.push(row);
+    } catch {
+      skippedItems.push({
+        kind: 'attachment',
+        path: key,
+        sizeBytes: bytes.byteLength,
+      });
+    }
+  }
+
+  return {
+    imported: restoredAttachments.length,
+    restoredAttachments,
+    skipped: {
+      reason: skippedItems.length ? ATTACHMENT_RESTORE_FAILED_REASON : null,
+      attachments: skippedItems.length,
+      items: skippedItems,
+    },
+  };
+}
+
+function buildAttachmentBlobLookup(manifest: BackupPayload['manifest']): Map<string, BackupManifestAttachmentBlob> {
+  return new Map(
+    (manifest.attachmentBlobs || []).map((item) => [`${item.cipherId}/${item.attachmentId}`, item])
+  );
+}
+
+async function prepareRemoteAttachmentPayload(
+  env: Env,
+  payload: BackupPayload,
+  files: Record<string, Uint8Array>,
+  source: RemoteAttachmentSource
+): Promise<PreparedBackupImportPayload> {
+  const manifestLookup = buildAttachmentBlobLookup(payload.manifest);
+  const storageKind = getBlobStorageKind(env);
+  const nextAttachments: SqlRow[] = [];
+  const skippedItems: BackupImportSkipSummary['items'] = [];
+
+  for (const row of payload.db.attachments || []) {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    const lookupKey = `${cipherId}/${attachmentId}`;
+    const ref = manifestLookup.get(lookupKey);
+    const sizeBytes = ref?.sizeBytes || Number(row.size || 0) || 0;
+    const path = ref ? `attachments/${ref.blobName}` : `attachments/${lookupKey}`;
+    const inlinePath = `attachments/${cipherId}/${attachmentId}.bin`;
+
+    if (files[inlinePath]) {
+      nextAttachments.push(row);
+      continue;
+    }
+    if (!ref) {
+      skippedItems.push({ kind: 'attachment', path, sizeBytes });
+      continue;
+    }
+    if (storageKind === 'kv' && sizeBytes > KV_MAX_OBJECT_BYTES) {
+      skippedItems.push({ kind: 'attachment', path, sizeBytes });
+      continue;
+    }
+    if (storageKind === null) {
+      skippedItems.push({ kind: 'attachment', path, sizeBytes });
+      continue;
+    }
+    nextAttachments.push(row);
+  }
+
+  const result = {
+    payload: {
+      ...payload,
+      db: {
+        ...payload.db,
+        attachments: nextAttachments,
+      },
+    },
+    skipped: {
+      reason: skippedItems.length ? 'Some remote attachments were unavailable and were skipped' : null,
+      attachments: skippedItems.length,
+      items: skippedItems,
+    },
+  };
+  return result;
+}
+
+async function removeAttachmentRows(db: D1Database, attachmentRows: SqlRow[], useShadowTable: boolean = false): Promise<void> {
+  if (!attachmentRows.length) return;
+  const tableName = useShadowTable ? shadowTableName('attachments') : 'attachments';
+  const statements = attachmentRows
+    .map((row) => {
+      const attachmentId = String(row.id || '').trim();
+      const cipherId = String(row.cipher_id || '').trim();
+      if (!attachmentId || !cipherId) return null;
+      return db.prepare(`DELETE FROM ${tableName} WHERE id = ? AND cipher_id = ?`).bind(attachmentId, cipherId);
+    })
+    .filter((statement): statement is D1PreparedStatement => !!statement);
+  if (!statements.length) return;
+  await db.batch(statements);
+}
+
+async function restoreRemoteAttachmentFiles(
+  env: Env,
+  payload: BackupPayload,
+  files: Record<string, Uint8Array>,
+  source: RemoteAttachmentSource
+): Promise<{
+  imported: number;
+  skipped: BackupImportSkipSummary;
+  restoredAttachments: SqlRow[];
+}> {
+  const manifestLookup = buildAttachmentBlobLookup(payload.manifest);
+  const restoredAttachments: SqlRow[] = [];
+  const skippedItems: BackupImportSkipSummary['items'] = [];
+
+  for (const row of payload.db.attachments || []) {
+    const cipherId = String(row.cipher_id || '').trim();
+    const attachmentId = String(row.id || '').trim();
+    const inlinePath = `attachments/${cipherId}/${attachmentId}.bin`;
+    const ref = manifestLookup.get(`${cipherId}/${attachmentId}`);
+    if (!ref && !files[inlinePath]) {
+      skippedItems.push({
+        kind: 'attachment',
+        path: `attachments/${cipherId}/${attachmentId}`,
+        sizeBytes: Number(row.size || 0) || 0,
+      });
+      continue;
+    }
+    const bytes = files[inlinePath] || (ref ? await source.loadAttachment(ref.blobName) : null);
+    if (!bytes) {
+      skippedItems.push({
+        kind: 'attachment',
+        path: ref ? `attachments/${ref.blobName}` : inlinePath,
+        sizeBytes: ref?.sizeBytes || Number(row.size || 0) || 0,
+      });
+      continue;
+    }
+    try {
+      await putBlobObject(env, getAttachmentObjectKey(cipherId, attachmentId), bytes, {
+        size: bytes.byteLength,
+        contentType: 'application/octet-stream',
+      });
+      restoredAttachments.push(row);
+    } catch {
+      skippedItems.push({
+        kind: 'attachment',
+        path: ref ? `attachments/${ref.blobName}` : inlinePath,
+        sizeBytes: bytes.byteLength,
+      });
+    }
+  }
+
+  return {
+    imported: restoredAttachments.length,
+    restoredAttachments,
+    skipped: {
+      reason: skippedItems.length ? ATTACHMENT_RESTORE_FAILED_REASON : null,
+      attachments: skippedItems.length,
+      items: skippedItems,
+    },
+  };
+}
+
+async function cleanupOrphanedBlobFiles(env: Env, beforeKeys: Set<string>, afterKeys: Set<string>): Promise<void> {
+  const staleKeys = Array.from(beforeKeys).filter((key) => !afterKeys.has(key));
+  for (const key of staleKeys) {
+    await deleteBlobObject(env, key);
+  }
+}
+
+async function importBackupRows(db: D1Database, payload: BackupPayload['db'], useShadowTables: boolean = false): Promise<void> {
+  const tableName = (table: BackupTableName): string => (useShadowTables ? shadowTableName(table) : table);
+  await runInsertBatch(
+    db,
+    tableName('config'),
+    buildInsertStatements(db, tableName('config'), ['key', 'value'], payload.config || [], true)
+  );
+  await runInsertBatch(
+    db,
+    tableName('users'),
+    buildInsertStatements(
+      db,
+      tableName('users'),
+      ['id', 'email', 'name', 'master_password_hint', 'master_password_hash', 'key', 'private_key', 'public_key', 'kdf_type', 'kdf_iterations', 'kdf_memory', 'kdf_parallelism', 'security_stamp', 'role', 'status', 'verify_devices', 'totp_secret', 'totp_recovery_code', 'created_at', 'updated_at'],
+      payload.users || []
+    )
+  );
+  await runInsertBatch(
+    db,
+    tableName('user_revisions'),
+    buildInsertStatements(db, tableName('user_revisions'), ['user_id', 'revision_date'], payload.user_revisions || [], true)
+  );
+  await runInsertBatch(
+    db,
+    tableName('domain_settings'),
+    buildInsertStatements(
+      db,
+      tableName('domain_settings'),
+      ['user_id', 'equivalent_domains', 'custom_equivalent_domains', 'excluded_global_equivalent_domains', 'updated_at'],
+      payload.domain_settings || [],
+      true
+    )
+  );
+  await runInsertBatch(
+    db,
+    tableName('webauthn_credentials'),
+    buildInsertStatements(
+      db,
+      tableName('webauthn_credentials'),
+      ['id', 'user_id', 'name', 'public_key', 'credential_id', 'counter', 'type', 'aa_guid', 'transports', 'encrypted_user_key', 'encrypted_public_key', 'encrypted_private_key', 'supports_prf', 'created_at', 'updated_at'],
+      payload.webauthn_credentials || []
+    )
+  );
+  await runInsertBatch(
+    db,
+    tableName('folders'),
+    buildInsertStatements(db, tableName('folders'), ['id', 'user_id', 'name', 'created_at', 'updated_at'], payload.folders || [])
+  );
+  await runInsertBatch(
+    db,
+    tableName('ciphers'),
+    buildInsertStatements(
+      db,
+      tableName('ciphers'),
+      ['id', 'user_id', 'type', 'folder_id', 'name', 'notes', 'favorite', 'data', 'reprompt', 'key', 'created_at', 'updated_at', 'archived_at', 'deleted_at'],
+      payload.ciphers || []
+    )
+  );
+  await runInsertBatch(
+    db,
+    tableName('attachments'),
+    buildInsertStatements(db, tableName('attachments'), ['id', 'cipher_id', 'file_name', 'size', 'size_name', 'key'], payload.attachments || [])
+  );
+}
+
+export async function importBackupArchiveBytes(
+  archiveBytes: Uint8Array,
+  env: Env,
+  actorUserId: string,
+  replaceExisting: boolean,
+  progress?: BackupRestoreProgressReporter,
+  fileName: string = 'nodewarden_backup.zip'
+): Promise<BackupImportExecutionResult> {
+  const parsed = parseBackupArchive(archiveBytes);
+  validateBackupPayloadContents(parsed.payload, parsed.files);
+  const prepared = prepareImportPayloadForTarget(env, parsed.payload, parsed.files);
+
+  try {
+    await ensureImportTargetIsFresh(env.DB);
+  } catch (error) {
+    if (!replaceExisting) {
+      throw error instanceof Error ? error : new Error('Backup import requires a fresh instance');
+    }
+  }
+
+  await resetRestoreArtifacts(env.DB);
+  const previousBlobKeys = replaceExisting ? await collectCurrentBlobKeys(env.DB) : new Set<string>();
+  try {
+    await progress?.({
+      source: 'local',
+      step: 'local_create_shadow',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_shadow_title',
+      stageDetail: 'txt_backup_restore_progress_local_shadow_detail',
+      replaceExisting,
+    });
+    await createShadowTables(env.DB);
+    await progress?.({
+      source: 'local',
+      step: 'local_import_data',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_data_title',
+      stageDetail: 'txt_backup_restore_progress_local_data_detail',
+      replaceExisting,
+    });
+    const db = await importPreparedBackupRows(env.DB, prepared.payload.db, env);
+    await validateShadowTableCounts(env.DB, {
+      config: (db.config || []).length,
+      users: (db.users || []).length,
+      domain_settings: (db.domain_settings || []).length,
+      user_revisions: (db.user_revisions || []).length,
+      webauthn_credentials: (db.webauthn_credentials || []).length,
+      folders: (db.folders || []).length,
+      ciphers: (db.ciphers || []).length,
+      attachments: (db.attachments || []).length,
+    });
+
+    await progress?.({
+      source: 'local',
+      step: 'local_restore_files',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_files_title',
+      stageDetail: 'txt_backup_restore_progress_local_files_detail',
+      replaceExisting,
+    });
+    const restored = await restoreBlobFiles(env, db, parsed.files);
+    const restoredAttachmentKeys = new Set((restored.restoredAttachments || []).map(attachmentRowKey));
+    const failedRestoreRows = (db.attachments || []).filter((row) => !restoredAttachmentKeys.has(attachmentRowKey(row)));
+    await removeAttachmentRows(env.DB, failedRestoreRows, true).catch(() => undefined);
+    await validateShadowTableCounts(env.DB, {
+      config: (db.config || []).length,
+      users: (db.users || []).length,
+      domain_settings: (db.domain_settings || []).length,
+      user_revisions: (db.user_revisions || []).length,
+      webauthn_credentials: (db.webauthn_credentials || []).length,
+      folders: (db.folders || []).length,
+      ciphers: (db.ciphers || []).length,
+      attachments: restored.restoredAttachments.length,
+    });
+    await progress?.({
+      source: 'local',
+      step: 'local_finalize',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_local_finalize_detail',
+      replaceExisting,
+    });
+    await swapShadowTablesIntoPlace(env.DB);
+    await resetRestoreArtifacts(env.DB).catch(() => undefined);
+    if (replaceExisting && previousBlobKeys.size) {
+      const nextBlobKeys = await collectCurrentBlobKeys(env.DB).catch(() => null);
+      if (nextBlobKeys) {
+        await cleanupOrphanedBlobFiles(env, previousBlobKeys, nextBlobKeys).catch(() => undefined);
+      }
+    }
+
+    await progress?.({
+      source: 'local',
+      step: 'local_complete',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_local_finalize_detail',
+      replaceExisting,
+      done: true,
+      ok: true,
+    });
+    return {
+      auditActorUserId: (db.users || []).some((row) => String(row.id || '').trim() === actorUserId) ? actorUserId : null,
+      result: {
+        object: 'instance-backup-import',
+        imported: {
+          config: (db.config || []).length,
+          users: (db.users || []).length,
+          domainSettings: (db.domain_settings || []).length,
+          userRevisions: (db.user_revisions || []).length,
+          webauthnCredentials: (db.webauthn_credentials || []).length,
+          folders: (db.folders || []).length,
+          ciphers: (db.ciphers || []).length,
+          attachments: restored.restoredAttachments.length,
+          attachmentFiles: restored.imported,
+        },
+        skipped: {
+          reason: restored.skipped.reason || prepared.skipped.reason,
+          attachments: prepared.skipped.attachments + restored.skipped.attachments,
+          items: [...prepared.skipped.items, ...restored.skipped.items],
+        },
+      },
+    };
+  } catch (error) {
+    await progress?.({
+      source: 'local',
+      step: 'local_failed',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_local_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_local_finalize_detail',
+      replaceExisting,
+      done: true,
+      ok: false,
+      error: error instanceof Error ? error.message : String(error),
+    });
+    await resetRestoreArtifacts(env.DB).catch(() => undefined);
+    throw error;
+  }
+}
+
+export async function importRemoteBackupArchiveBytes(
+  archiveBytes: Uint8Array,
+  env: Env,
+  actorUserId: string,
+  replaceExisting: boolean,
+  source: RemoteAttachmentSource,
+  progress?: BackupRestoreProgressReporter,
+  fileName: string = 'nodewarden_backup.zip'
+): Promise<BackupImportExecutionResult> {
+  const parsed = parseBackupArchive(archiveBytes, { allowExternalAttachmentBlobs: true });
+  const preparedRemote = await prepareRemoteAttachmentPayload(env, parsed.payload, parsed.files, source);
+  validateBackupPayloadContents(preparedRemote.payload, parsed.files, { allowExternalAttachmentBlobs: true });
+
+  try {
+    await ensureImportTargetIsFresh(env.DB);
+  } catch (error) {
+    if (!replaceExisting) {
+      throw error instanceof Error ? error : new Error('Backup import requires a fresh instance');
+    }
+  }
+
+  await resetRestoreArtifacts(env.DB);
+  const previousBlobKeys = replaceExisting ? await collectCurrentBlobKeys(env.DB) : new Set<string>();
+  try {
+    await progress?.({
+      source: 'remote',
+      step: 'remote_create_shadow',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_shadow_title',
+      stageDetail: 'txt_backup_restore_progress_remote_shadow_detail',
+      replaceExisting,
+    });
+    await createShadowTables(env.DB);
+    await progress?.({
+      source: 'remote',
+      step: 'remote_import_data',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_data_title',
+      stageDetail: 'txt_backup_restore_progress_remote_data_detail',
+      replaceExisting,
+    });
+    const db = await importPreparedBackupRows(env.DB, preparedRemote.payload.db, env);
+    await validateShadowTableCounts(env.DB, {
+      config: (db.config || []).length,
+      users: (db.users || []).length,
+      domain_settings: (db.domain_settings || []).length,
+      user_revisions: (db.user_revisions || []).length,
+      webauthn_credentials: (db.webauthn_credentials || []).length,
+      folders: (db.folders || []).length,
+      ciphers: (db.ciphers || []).length,
+      attachments: (db.attachments || []).length,
+    });
+
+    await progress?.({
+      source: 'remote',
+      step: 'remote_restore_files',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_files_title',
+      stageDetail: 'txt_backup_restore_progress_remote_files_detail',
+      replaceExisting,
+    });
+    const restored = await restoreRemoteAttachmentFiles(env, preparedRemote.payload, parsed.files, source);
+    const restoredAttachmentKeys = new Set((restored.restoredAttachments || []).map(attachmentRowKey));
+    const failedRestoreRows = (db.attachments || []).filter((row) => !restoredAttachmentKeys.has(attachmentRowKey(row)));
+    await removeAttachmentRows(env.DB, failedRestoreRows, true).catch(() => undefined);
+    await validateShadowTableCounts(env.DB, {
+      config: (db.config || []).length,
+      users: (db.users || []).length,
+      domain_settings: (db.domain_settings || []).length,
+      user_revisions: (db.user_revisions || []).length,
+      webauthn_credentials: (db.webauthn_credentials || []).length,
+      folders: (db.folders || []).length,
+      ciphers: (db.ciphers || []).length,
+      attachments: restored.restoredAttachments.length,
+    });
+    await progress?.({
+      source: 'remote',
+      step: 'remote_finalize',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_remote_finalize_detail',
+      replaceExisting,
+    });
+    await swapShadowTablesIntoPlace(env.DB);
+    await resetRestoreArtifacts(env.DB).catch(() => undefined);
+
+    if (replaceExisting && previousBlobKeys.size) {
+      const nextBlobKeys = await collectCurrentBlobKeys(env.DB).catch(() => null);
+      if (nextBlobKeys) {
+        await cleanupOrphanedBlobFiles(env, previousBlobKeys, nextBlobKeys).catch(() => undefined);
+      }
+    }
+
+    await progress?.({
+      source: 'remote',
+      step: 'remote_complete',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_remote_finalize_detail',
+      replaceExisting,
+      done: true,
+      ok: true,
+    });
+    const finalSkippedItems = [...preparedRemote.skipped.items, ...restored.skipped.items];
+    const finalSkippedReason = finalSkippedItems.length
+      ? restored.skipped.reason || preparedRemote.skipped.reason
+      : null;
+
+    return {
+      auditActorUserId: (db.users || []).some((row) => String(row.id || '').trim() === actorUserId) ? actorUserId : null,
+      result: {
+        object: 'instance-backup-import',
+        imported: {
+          config: (db.config || []).length,
+          users: (db.users || []).length,
+          domainSettings: (db.domain_settings || []).length,
+          userRevisions: (db.user_revisions || []).length,
+          webauthnCredentials: (db.webauthn_credentials || []).length,
+          folders: (db.folders || []).length,
+          ciphers: (db.ciphers || []).length,
+          attachments: restored.restoredAttachments.length,
+          attachmentFiles: restored.imported,
+        },
+        skipped: {
+          reason: finalSkippedReason,
+          attachments: finalSkippedItems.length,
+          items: finalSkippedItems,
+        },
+      },
+    };
+  } catch (error) {
+    await progress?.({
+      source: 'remote',
+      step: 'remote_failed',
+      fileName,
+      stageTitle: 'txt_backup_restore_progress_remote_finalize_title',
+      stageDetail: 'txt_backup_restore_progress_remote_finalize_detail',
+      replaceExisting,
+      done: true,
+      ok: false,
+      error: error instanceof Error ? error.message : String(error),
+    });
+    await resetRestoreArtifacts(env.DB).catch(() => undefined);
+    throw error;
+  }
+}

src/services/backup-settings-crypto.ts

@@ -0,0 +1,253 @@
+import type { Env, User } from '../types';
+
+// CONTRACT:
+// Backup settings contain provider credentials. They are stored as a v2 envelope:
+// - runtime: AES-GCM encrypted with a key derived from JWT_SECRET for the current
+//   server's scheduled backup runner.
+// - portable: AES-GCM encrypted with a random DEK; that DEK is RSA-wrapped for
+//   active admin public keys so settings can be repaired after restore/migration.
+//   Historical/imported databases may not have usable admin public keys; in that
+//   case portable.wraps is empty but the runtime ciphertext is still encrypted.
+//
+// New admin-entered provider secrets, such as mail API keys, should use this
+// pattern or a deliberately documented replacement. Do not store provider
+// secrets as plain config JSON.
+const RUNTIME_SALT = 'nodewarden.backup-settings.runtime.v2';
+const RUNTIME_INFO = 'runtime';
+const PORTABLE_ALGORITHM = 'RSA-OAEP';
+const PORTABLE_HASH = 'SHA-1';
+const AES_GCM_ALGORITHM = 'AES-GCM';
+const AES_GCM_IV_BYTES = 12;
+const PORTABLE_DEK_BYTES = 32;
+
+export interface BackupSettingsRuntimeEnvelope {
+  iv: string;
+  ciphertext: string;
+}
+
+export interface BackupSettingsPortableWrap {
+  userId: string;
+  wrappedKey: string;
+}
+
+export interface BackupSettingsPortableEnvelope {
+  iv: string;
+  ciphertext: string;
+  wraps: BackupSettingsPortableWrap[];
+}
+
+export interface BackupSettingsEnvelopeV2 {
+  version: 2;
+  runtime: BackupSettingsRuntimeEnvelope;
+  portable: BackupSettingsPortableEnvelope;
+}
+
+function bytesToBase64(bytes: Uint8Array): string {
+  let text = '';
+  for (let index = 0; index < bytes.length; index += 1) {
+    text += String.fromCharCode(bytes[index]);
+  }
+  return btoa(text);
+}
+
+function base64ToBytes(value: string): Uint8Array {
+  const normalized = String(value || '').trim();
+  const binary = atob(normalized);
+  const bytes = new Uint8Array(binary.length);
+  for (let index = 0; index < binary.length; index += 1) {
+    bytes[index] = binary.charCodeAt(index);
+  }
+  return bytes;
+}
+
+function isPlainObject(value: unknown): value is Record<string, unknown> {
+  return !!value && typeof value === 'object' && !Array.isArray(value);
+}
+
+async function deriveRuntimeKey(secret: string): Promise<CryptoKey> {
+  const encoder = new TextEncoder();
+  const keyMaterial = await crypto.subtle.importKey(
+    'raw',
+    encoder.encode(secret),
+    'HKDF',
+    false,
+    ['deriveBits']
+  );
+  const bits = await crypto.subtle.deriveBits(
+    {
+      name: 'HKDF',
+      hash: 'SHA-256',
+      salt: encoder.encode(RUNTIME_SALT),
+      info: encoder.encode(RUNTIME_INFO),
+    },
+    keyMaterial,
+    256
+  );
+  return crypto.subtle.importKey('raw', bits, { name: AES_GCM_ALGORITHM }, false, ['encrypt', 'decrypt']);
+}
+
+async function encryptAesGcm(plaintext: Uint8Array, key: CryptoKey): Promise<{ iv: Uint8Array; ciphertext: Uint8Array }> {
+  const iv = crypto.getRandomValues(new Uint8Array(AES_GCM_IV_BYTES));
+  const ciphertext = new Uint8Array(
+    await crypto.subtle.encrypt(
+      { name: AES_GCM_ALGORITHM, iv },
+      key,
+      plaintext
+    )
+  );
+  return { iv, ciphertext };
+}
+
+async function decryptAesGcm(ciphertext: Uint8Array, iv: Uint8Array, key: CryptoKey): Promise<Uint8Array> {
+  return new Uint8Array(
+    await crypto.subtle.decrypt(
+      { name: AES_GCM_ALGORITHM, iv },
+      key,
+      ciphertext
+    )
+  );
+}
+
+async function importPortablePublicKey(publicKeyBase64: string): Promise<CryptoKey> {
+  return crypto.subtle.importKey(
+    'spki',
+    base64ToBytes(publicKeyBase64),
+    { name: PORTABLE_ALGORITHM, hash: PORTABLE_HASH },
+    false,
+    ['encrypt']
+  );
+}
+
+function getEligiblePortableUsers(users: Pick<User, 'id' | 'publicKey' | 'role' | 'status'>[]): Array<Pick<User, 'id' | 'publicKey'>> {
+  return users
+    .filter(
+      (user) =>
+        user.role === 'admin' &&
+        user.status === 'active' &&
+        typeof user.publicKey === 'string' &&
+        user.publicKey.trim().length > 0
+    )
+    .map((user) => ({
+      id: user.id,
+      publicKey: user.publicKey!,
+    }));
+}
+
+export function parseBackupSettingsEnvelope(raw: string | null): BackupSettingsEnvelopeV2 | null {
+  if (!raw) return null;
+  try {
+    const parsed = JSON.parse(raw) as Record<string, unknown>;
+    if (!isPlainObject(parsed) || Number(parsed.version) !== 2) return null;
+    const runtime = parsed.runtime;
+    const portable = parsed.portable;
+    if (!isPlainObject(runtime) || !isPlainObject(portable)) return null;
+    if (!Array.isArray(portable.wraps)) return null;
+    if (typeof runtime.iv !== 'string' || typeof runtime.ciphertext !== 'string') return null;
+    if (typeof portable.iv !== 'string' || typeof portable.ciphertext !== 'string') return null;
+    return {
+      version: 2,
+      runtime: {
+        iv: runtime.iv,
+        ciphertext: runtime.ciphertext,
+      },
+      portable: {
+        iv: portable.iv,
+        ciphertext: portable.ciphertext,
+        wraps: portable.wraps
+          .filter((entry): entry is Record<string, unknown> => isPlainObject(entry))
+          .map((entry) => ({
+            userId: String(entry.userId || '').trim(),
+            wrappedKey: String(entry.wrappedKey || '').trim(),
+          }))
+          .filter((entry) => entry.userId && entry.wrappedKey),
+      },
+    };
+  } catch {
+    return null;
+  }
+}
+
+export function exportPortableBackupSettingsEnvelope(raw: string | null): string | null {
+  const envelope = parseBackupSettingsEnvelope(raw);
+  if (!envelope) return null;
+  return JSON.stringify({
+    version: 2,
+    portableOnly: true,
+    runtime: {
+      iv: '',
+      ciphertext: '',
+    },
+    portable: envelope.portable,
+  });
+}
+
+export async function encryptBackupSettingsEnvelope(
+  plaintext: string,
+  env: Env,
+  users: Pick<User, 'id' | 'publicKey' | 'role' | 'status'>[]
+): Promise<string> {
+  const encoder = new TextEncoder();
+  const eligibleUsers = getEligiblePortableUsers(users);
+
+  const runtimeKey = await deriveRuntimeKey(env.JWT_SECRET);
+  const runtime = await encryptAesGcm(encoder.encode(plaintext), runtimeKey);
+
+  const portableDek = crypto.getRandomValues(new Uint8Array(PORTABLE_DEK_BYTES));
+  const portableKey = await crypto.subtle.importKey(
+    'raw',
+    portableDek,
+    { name: AES_GCM_ALGORITHM },
+    false,
+    ['encrypt']
+  );
+  const portableCipher = await encryptAesGcm(encoder.encode(plaintext), portableKey);
+
+  const wraps: BackupSettingsPortableWrap[] = [];
+  for (const user of eligibleUsers) {
+    try {
+      const publicKey = await importPortablePublicKey(user.publicKey!);
+      const wrappedKey = new Uint8Array(
+        await crypto.subtle.encrypt(
+          { name: PORTABLE_ALGORITHM },
+          publicKey,
+          portableDek
+        )
+      );
+      wraps.push({
+        userId: user.id,
+        wrappedKey: bytesToBase64(wrappedKey),
+      });
+    } catch {
+      // Keep runtime settings usable even if an imported admin key is malformed.
+    }
+  }
+
+  const envelope: BackupSettingsEnvelopeV2 = {
+    version: 2,
+    runtime: {
+      iv: bytesToBase64(runtime.iv),
+      ciphertext: bytesToBase64(runtime.ciphertext),
+    },
+    portable: {
+      iv: bytesToBase64(portableCipher.iv),
+      ciphertext: bytesToBase64(portableCipher.ciphertext),
+      wraps,
+    },
+  };
+
+  return JSON.stringify(envelope);
+}
+
+export async function decryptBackupSettingsRuntime(raw: string, env: Env): Promise<string> {
+  const envelope = parseBackupSettingsEnvelope(raw);
+  if (!envelope) {
+    throw new Error('Backup settings envelope is invalid');
+  }
+  const runtimeKey = await deriveRuntimeKey(env.JWT_SECRET);
+  const plaintext = await decryptAesGcm(
+    base64ToBytes(envelope.runtime.ciphertext),
+    base64ToBytes(envelope.runtime.iv),
+    runtimeKey
+  );
+  return new TextDecoder().decode(plaintext);
+}

src/services/backup-uploader.ts

@@ -0,0 +1,789 @@
+import {
+  BackupDestinationRecord,
+  BackupDestinationType,
+  S3BackupDestination,
+  WebDavBackupDestination,
+} from './backup-config';
+
+export interface BackupUploadResult {
+  provider: BackupDestinationType;
+  remotePath: string;
+}
+
+export interface RemoteBackupItem {
+  path: string;
+  name: string;
+  isDirectory: boolean;
+  size: number | null;
+  modifiedAt: string | null;
+}
+
+export interface RemoteBackupListResult {
+  provider: BackupDestinationType;
+  currentPath: string;
+  parentPath: string | null;
+  items: RemoteBackupItem[];
+}
+
+export interface RemoteBackupFile {
+  provider: BackupDestinationType;
+  remotePath: string;
+  fileName: string;
+  contentType: string;
+  bytes: Uint8Array;
+}
+
+export interface RemoteBackupFilePutOptions {
+  contentType?: string;
+}
+
+function isBackupArchiveName(name: string): boolean {
+  return /\.zip$/i.test(String(name || '').trim());
+}
+
+function encodePathSegments(path: string): string {
+  return path
+    .split('/')
+    .filter(Boolean)
+    .map((segment) => encodeURIComponent(segment))
+    .join('/');
+}
+
+function trimSlashes(value: string): string {
+  let next = String(value || '');
+  while (next.startsWith('/')) next = next.slice(1);
+  while (next.endsWith('/')) next = next.slice(0, -1);
+  return next;
+}
+
+function buildJoinedPath(...segments: string[]): string {
+  return segments.map(trimSlashes).filter(Boolean).join('/');
+}
+
+function normalizeRelativePath(path: string): string {
+  const normalized = trimSlashes(path).replace(/\\/g, '/');
+  if (!normalized) return '';
+  const parts = normalized.split('/').filter(Boolean);
+  if (parts.some((part) => part === '.' || part === '..')) {
+    throw new Error('Invalid remote backup path');
+  }
+  return parts.join('/');
+}
+
+function basename(path: string): string {
+  const normalized = trimSlashes(path);
+  if (!normalized) return '';
+  const parts = normalized.split('/').filter(Boolean);
+  return parts[parts.length - 1] || '';
+}
+
+function parentPath(path: string): string | null {
+  const normalized = normalizeRelativePath(path);
+  if (!normalized) return null;
+  const parts = normalized.split('/');
+  parts.pop();
+  return parts.length ? parts.join('/') : '';
+}
+
+function sortRemoteItems(items: RemoteBackupItem[]): RemoteBackupItem[] {
+  return items.slice().sort((a, b) => {
+    const aIsAttachmentsDir = a.isDirectory && a.name === 'attachments';
+    const bIsAttachmentsDir = b.isDirectory && b.name === 'attachments';
+    if (aIsAttachmentsDir !== bIsAttachmentsDir) return aIsAttachmentsDir ? -1 : 1;
+    if (a.isDirectory !== b.isDirectory) return a.isDirectory ? -1 : 1;
+    return a.name.localeCompare(b.name, 'en');
+  });
+}
+
+function decodeXmlText(value: string): string {
+  return value.replace(/&(amp|lt|gt|quot|#39);/g, (_match, entity) => {
+    switch (entity) {
+      case 'amp':
+        return '&';
+      case 'lt':
+        return '<';
+      case 'gt':
+        return '>';
+      case 'quot':
+        return '"';
+      case '#39':
+        return "'";
+      default:
+        return _match;
+    }
+  });
+}
+
+function parseHttpDate(value: string): string | null {
+  const parsed = new Date(value);
+  return Number.isFinite(parsed.getTime()) ? parsed.toISOString() : null;
+}
+
+function extractXmlBlocks(xml: string, tagName: string): string[] {
+  const pattern = new RegExp(`<(?:[^:>]+:)?${tagName}\\b[^>]*>([\\s\\S]*?)</(?:[^:>]+:)?${tagName}>`, 'gi');
+  const blocks: string[] = [];
+  let match: RegExpExecArray | null;
+  while ((match = pattern.exec(xml))) {
+    blocks.push(match[1]);
+  }
+  return blocks;
+}
+
+function extractXmlFirst(xml: string, tagName: string): string | null {
+  const pattern = new RegExp(`<(?:[^:>]+:)?${tagName}\\b[^>]*>([\\s\\S]*?)</(?:[^:>]+:)?${tagName}>`, 'i');
+  const match = xml.match(pattern);
+  return match?.[1] ? decodeXmlText(match[1].trim()) : null;
+}
+
+async function sha256Hex(value: Uint8Array | string): Promise<string> {
+  const bytes = typeof value === 'string' ? new TextEncoder().encode(value) : value;
+  const digest = await crypto.subtle.digest('SHA-256', bytes);
+  return Array.from(new Uint8Array(digest)).map((byte) => byte.toString(16).padStart(2, '0')).join('');
+}
+
+async function hmacSha256Raw(keyBytes: Uint8Array, message: string): Promise<Uint8Array> {
+  const key = await crypto.subtle.importKey('raw', keyBytes, { name: 'HMAC', hash: 'SHA-256' }, false, ['sign']);
+  const signature = await crypto.subtle.sign('HMAC', key, new TextEncoder().encode(message));
+  return new Uint8Array(signature);
+}
+
+function toBasicAuthHeader(username: string, password: string): string {
+  const token = btoa(`${username}:${password}`);
+  return `Basic ${token}`;
+}
+
+function buildCanonicalQueryString(url: URL): string {
+  const params = Array.from(url.searchParams.entries()).sort(([aKey, aValue], [bKey, bValue]) => {
+    if (aKey === bKey) return aValue.localeCompare(bValue);
+    return aKey.localeCompare(bKey);
+  });
+  return params
+    .map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`)
+    .join('&');
+}
+
+async function buildAwsV4Authorization(
+  method: string,
+  url: URL,
+  headers: Record<string, string>,
+  payloadHashHex: string,
+  accessKeyId: string,
+  secretAccessKey: string,
+  region: string
+): Promise<string> {
+  const amzDate = headers['x-amz-date'];
+  const shortDate = amzDate.slice(0, 8);
+  const headerEntries = Object.entries(headers).map(([name, value]) => [name.toLowerCase(), value] as const).sort(([a], [b]) => a.localeCompare(b));
+  const canonicalHeaders = headerEntries
+    .map(([name, value]) => `${name}:${String(value).trim().replace(/\s+/g, ' ')}`)
+    .join('\n');
+  const signedHeaders = headerEntries.map(([name]) => name).join(';');
+  const canonicalRequest = [
+    method.toUpperCase(),
+    url.pathname || '/',
+    buildCanonicalQueryString(url),
+    `${canonicalHeaders}\n`,
+    signedHeaders,
+    payloadHashHex,
+  ].join('\n');
+  const credentialScope = `${shortDate}/${region}/s3/aws4_request`;
+  const stringToSign = [
+    'AWS4-HMAC-SHA256',
+    amzDate,
+    credentialScope,
+    await sha256Hex(canonicalRequest),
+  ].join('\n');
+
+  const kDate = await hmacSha256Raw(new TextEncoder().encode(`AWS4${secretAccessKey}`), shortDate);
+  const kRegion = await hmacSha256Raw(kDate, region);
+  const kService = await hmacSha256Raw(kRegion, 's3');
+  const kSigning = await hmacSha256Raw(kService, 'aws4_request');
+  const signatureBytes = await hmacSha256Raw(kSigning, stringToSign);
+  const signature = Array.from(signatureBytes).map((byte) => byte.toString(16).padStart(2, '0')).join('');
+
+  return `AWS4-HMAC-SHA256 Credential=${accessKeyId}/${credentialScope}, SignedHeaders=${signedHeaders}, Signature=${signature}`;
+}
+
+function ensureDestinationConfigReady(destination: BackupDestinationRecord): void {
+  if (destination.type === 'webdav') {
+    const config = destination.destination as WebDavBackupDestination;
+    if (!String(config.baseUrl || '').trim()) throw new Error('WebDAV server URL is required');
+    if (!/^https?:\/\//i.test(String(config.baseUrl || '').trim())) throw new Error('WebDAV server URL must start with http:// or https://');
+    if (!String(config.username || '').trim()) throw new Error('WebDAV username is required');
+    if (!String(config.password || '')) throw new Error('WebDAV password is required');
+    return;
+  }
+  if (destination.type === 's3') {
+    const config = destination.destination as S3BackupDestination;
+    if (!String(config.endpoint || '').trim()) throw new Error('S3 endpoint is required');
+    if (!/^https?:\/\//i.test(String(config.endpoint || '').trim())) throw new Error('S3 endpoint must start with http:// or https://');
+    if (!String(config.bucket || '').trim()) throw new Error('S3 bucket is required');
+    if (!String(config.accessKeyId || '').trim()) throw new Error('S3 access key is required');
+    if (!String(config.secretAccessKey || '')) throw new Error('S3 secret key is required');
+  }
+}
+
+function buildWebDavUrl(baseUrl: string, relativePath: string): string {
+  const trimmedBase = baseUrl.replace(/\/+$/, '');
+  const normalized = normalizeRelativePath(relativePath);
+  return normalized ? `${trimmedBase}/${encodePathSegments(normalized)}` : trimmedBase;
+}
+
+function webDavFullPath(config: WebDavBackupDestination, relativePath: string): string {
+  return buildJoinedPath(config.remotePath, normalizeRelativePath(relativePath));
+}
+
+async function ensureWebDavDirectory(baseUrl: string, directoryPath: string, authHeader: string): Promise<void> {
+  const segments = trimSlashes(directoryPath).split('/').filter(Boolean);
+  let current = '';
+  for (const segment of segments) {
+    current = buildJoinedPath(current, segment);
+    const url = buildWebDavUrl(baseUrl, current);
+    const response = await fetch(url, {
+      method: 'MKCOL',
+      headers: {
+        Authorization: authHeader,
+      },
+    });
+    if ([200, 201, 204, 301, 302, 405].includes(response.status)) continue;
+    throw new Error(`WebDAV directory creation failed: ${response.status}`);
+  }
+}
+
+async function ensureWebDavDirectoryCached(
+  baseUrl: string,
+  directoryPath: string,
+  authHeader: string,
+  ensuredDirectories: Set<string>
+): Promise<void> {
+  const segments = trimSlashes(directoryPath).split('/').filter(Boolean);
+  let current = '';
+  for (const segment of segments) {
+    current = buildJoinedPath(current, segment);
+    if (ensuredDirectories.has(current)) continue;
+    const url = buildWebDavUrl(baseUrl, current);
+    const response = await fetch(url, {
+      method: 'MKCOL',
+      headers: {
+        Authorization: authHeader,
+      },
+    });
+    if ([200, 201, 204, 301, 302, 405].includes(response.status)) {
+      ensuredDirectories.add(current);
+      continue;
+    }
+    throw new Error(`WebDAV directory creation failed: ${response.status}`);
+  }
+}
+
+async function putToWebDav(
+  config: WebDavBackupDestination,
+  relativePath: string,
+  bytes: Uint8Array,
+  options: RemoteBackupFilePutOptions = {},
+  ensuredDirectories?: Set<string>
+): Promise<void> {
+  const authHeader = toBasicAuthHeader(config.username, config.password);
+  const remoteFilePath = buildJoinedPath(config.remotePath, relativePath);
+  const remoteDir = parentPath(remoteFilePath);
+
+  if (remoteDir) {
+    if (ensuredDirectories) {
+      await ensureWebDavDirectoryCached(config.baseUrl, remoteDir, authHeader, ensuredDirectories);
+    } else {
+      await ensureWebDavDirectory(config.baseUrl, remoteDir, authHeader);
+    }
+  }
+
+  const response = await fetch(buildWebDavUrl(config.baseUrl, remoteFilePath), {
+    method: 'PUT',
+    headers: {
+      Authorization: authHeader,
+      'Content-Type': options.contentType || 'application/octet-stream',
+      'Content-Length': String(bytes.byteLength),
+    },
+    body: bytes,
+  });
+
+  if (!response.ok) {
+    throw new Error(`WebDAV upload failed: ${response.status}`);
+  }
+}
+
+async function uploadToWebDav(config: WebDavBackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
+  await putToWebDav(config, fileName, archive, { contentType: 'application/zip' });
+  return {
+    provider: 'webdav',
+    remotePath: buildJoinedPath(config.remotePath, fileName),
+  };
+}
+
+function parseWebDavResponsePath(baseUrl: string, href: string): string {
+  const base = new URL(baseUrl);
+  const target = new URL(href, base);
+  const basePath = trimSlashes(decodeURIComponent(base.pathname));
+  const entryPath = trimSlashes(decodeURIComponent(target.pathname));
+  if (!basePath) return entryPath;
+  if (entryPath === basePath) return '';
+  return entryPath.startsWith(`${basePath}/`) ? entryPath.slice(basePath.length + 1) : entryPath;
+}
+
+async function listWebDavEntries(config: WebDavBackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
+  const currentPath = normalizeRelativePath(relativePath);
+  const targetFullPath = webDavFullPath(config, currentPath);
+  const authHeader = toBasicAuthHeader(config.username, config.password);
+  const response = await fetch(buildWebDavUrl(config.baseUrl, targetFullPath), {
+    method: 'PROPFIND',
+    headers: {
+      Authorization: authHeader,
+      Depth: '1',
+      'Content-Type': 'application/xml; charset=utf-8',
+    },
+    body: `<?xml version="1.0" encoding="utf-8"?><propfind xmlns="DAV:"><prop><resourcetype/><getcontentlength/><getlastmodified/></prop></propfind>`,
+  });
+  if (response.status === 404) {
+    return {
+      provider: 'webdav',
+      currentPath,
+      parentPath: parentPath(currentPath),
+      items: [],
+    };
+  }
+  if (!response.ok) {
+    throw new Error(`WebDAV listing failed: ${response.status}`);
+  }
+
+  const xml = await response.text();
+  const rootFullPath = trimSlashes(config.remotePath);
+  const items: RemoteBackupItem[] = [];
+  for (const block of extractXmlBlocks(xml, 'response')) {
+    const href = extractXmlFirst(block, 'href');
+    if (!href) continue;
+    const fullPath = trimSlashes(parseWebDavResponsePath(config.baseUrl, href));
+    if (!fullPath) continue;
+    if (fullPath === targetFullPath) continue;
+    if (rootFullPath && !(fullPath === rootFullPath || fullPath.startsWith(`${rootFullPath}/`))) continue;
+    const relative = rootFullPath
+      ? fullPath === rootFullPath
+        ? ''
+        : fullPath.slice(rootFullPath.length + 1)
+      : fullPath;
+    if (!relative) continue;
+    const directParent = parentPath(relative);
+    if ((directParent || '') !== currentPath) continue;
+
+    const resourceTypeBlock = extractXmlFirst(block, 'resourcetype') || '';
+    const isDirectory = /<(?:[^:>]+:)?collection\b/i.test(resourceTypeBlock);
+    const sizeRaw = extractXmlFirst(block, 'getcontentlength');
+    const modifiedAtRaw = extractXmlFirst(block, 'getlastmodified');
+    items.push({
+      path: relative,
+      name: basename(relative) || relative,
+      isDirectory,
+      size: !isDirectory && sizeRaw && Number.isFinite(Number(sizeRaw)) ? Number(sizeRaw) : null,
+      modifiedAt: modifiedAtRaw ? parseHttpDate(modifiedAtRaw) : null,
+    });
+  }
+
+  return {
+    provider: 'webdav',
+    currentPath,
+    parentPath: parentPath(currentPath),
+    items: sortRemoteItems(items),
+  };
+}
+
+async function downloadFromWebDav(config: WebDavBackupDestination, relativePath: string): Promise<RemoteBackupFile> {
+  const normalized = normalizeRelativePath(relativePath);
+  if (!normalized || normalized.endsWith('/')) {
+    throw new Error('Please select a backup file');
+  }
+  const authHeader = toBasicAuthHeader(config.username, config.password);
+  const remotePath = webDavFullPath(config, normalized);
+  const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
+    method: 'GET',
+    headers: {
+      Authorization: authHeader,
+    },
+  });
+  if (!response.ok) {
+    throw new Error(`WebDAV download failed: ${response.status}`);
+  }
+  return {
+    provider: 'webdav',
+    remotePath: normalized,
+    fileName: basename(normalized) || 'backup.zip',
+    contentType: String(response.headers.get('Content-Type') || 'application/zip').trim() || 'application/zip',
+    bytes: new Uint8Array(await response.arrayBuffer()),
+  };
+}
+
+async function deleteFromWebDav(config: WebDavBackupDestination, relativePath: string): Promise<void> {
+  const authHeader = toBasicAuthHeader(config.username, config.password);
+  const remotePath = webDavFullPath(config, relativePath);
+  const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
+    method: 'DELETE',
+    headers: {
+      Authorization: authHeader,
+    },
+  });
+  if (!response.ok && response.status !== 404) {
+    throw new Error(`WebDAV delete failed: ${response.status}`);
+  }
+}
+
+async function existsInWebDav(config: WebDavBackupDestination, relativePath: string): Promise<boolean> {
+  const authHeader = toBasicAuthHeader(config.username, config.password);
+  const remotePath = webDavFullPath(config, relativePath);
+  const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
+    method: 'HEAD',
+    headers: {
+      Authorization: authHeader,
+    },
+  });
+  if (response.status === 404) return false;
+  if (!response.ok) {
+    throw new Error(`WebDAV existence check failed: ${response.status}`);
+  }
+  return true;
+}
+
+function s3BucketBaseUrl(config: S3BackupDestination): URL {
+  return new URL(`${config.endpoint.replace(/\/+$/, '')}/${encodeURIComponent(config.bucket)}`);
+}
+
+function normalizeS3ObjectKey(config: S3BackupDestination, relativePath: string): string {
+  return buildJoinedPath(config.rootPath, normalizeRelativePath(relativePath));
+}
+
+async function signedS3Request(
+  config: S3BackupDestination,
+  method: 'GET' | 'PUT' | 'DELETE' | 'HEAD',
+  url: URL,
+  body?: Uint8Array,
+  contentType?: string
+): Promise<Response> {
+  const payloadHashHex = await sha256Hex(body || new Uint8Array());
+  const amzDate = new Date().toISOString().replace(/[:-]|\.\d{3}/g, '');
+  const headers: Record<string, string> = {
+    host: url.host,
+    'x-amz-content-sha256': payloadHashHex,
+    'x-amz-date': amzDate,
+  };
+  if (method === 'PUT') headers['content-type'] = contentType || 'application/octet-stream';
+
+  const authorization = await buildAwsV4Authorization(
+    method,
+    url,
+    headers,
+    payloadHashHex,
+    config.accessKeyId,
+    config.secretAccessKey,
+    config.region || 'auto'
+  );
+
+  return fetch(url.toString(), {
+    method,
+    headers: {
+      Authorization: authorization,
+      'X-Amz-Content-Sha256': headers['x-amz-content-sha256'],
+      'X-Amz-Date': headers['x-amz-date'],
+      ...(method === 'PUT' ? { 'Content-Type': headers['content-type'] } : {}),
+    },
+    body,
+  });
+}
+
+async function putToS3(
+  config: S3BackupDestination,
+  relativePath: string,
+  bytes: Uint8Array,
+  options: RemoteBackupFilePutOptions = {}
+): Promise<void> {
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'PUT', url, bytes, options.contentType);
+
+  if (!response.ok) {
+    throw new Error(`S3 upload failed: ${response.status}`);
+  }
+}
+
+async function uploadToS3(config: S3BackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
+  await putToS3(config, fileName, archive, { contentType: 'application/zip' });
+  return {
+    provider: 's3',
+    remotePath: normalizeS3ObjectKey(config, fileName),
+  };
+}
+
+async function listS3Entries(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
+  const currentPath = normalizeRelativePath(relativePath);
+  const targetPrefixBase = normalizeS3ObjectKey(config, currentPath);
+  const targetPrefix = trimSlashes(targetPrefixBase) ? `${trimSlashes(targetPrefixBase)}/` : '';
+  const url = s3BucketBaseUrl(config);
+  url.searchParams.set('list-type', '2');
+  url.searchParams.set('delimiter', '/');
+  if (targetPrefix) url.searchParams.set('prefix', targetPrefix);
+
+  const response = await signedS3Request(config, 'GET', url);
+  if (!response.ok) {
+    throw new Error(`S3 listing failed: ${response.status}`);
+  }
+
+  const xml = await response.text();
+  const rootPrefix = trimSlashes(config.rootPath);
+  const items: RemoteBackupItem[] = [];
+
+  for (const prefix of extractXmlBlocks(xml, 'CommonPrefixes')) {
+    const fullPrefix = trimSlashes(extractXmlFirst(prefix, 'Prefix') || '');
+    if (!fullPrefix) continue;
+    const relative = rootPrefix
+      ? fullPrefix === rootPrefix
+        ? ''
+        : fullPrefix.startsWith(`${rootPrefix}/`)
+          ? fullPrefix.slice(rootPrefix.length + 1)
+          : ''
+      : fullPrefix;
+    const normalizedRelative = trimSlashes(relative);
+    if (!normalizedRelative) continue;
+    const itemPath = normalizedRelative.replace(/\/+$/, '');
+    if ((parentPath(itemPath) || '') !== currentPath) continue;
+    items.push({
+      path: itemPath,
+      name: basename(itemPath) || itemPath,
+      isDirectory: true,
+      size: null,
+      modifiedAt: null,
+    });
+  }
+
+  for (const content of extractXmlBlocks(xml, 'Contents')) {
+    const fullKey = trimSlashes(extractXmlFirst(content, 'Key') || '');
+    if (!fullKey || (targetPrefix && fullKey === trimSlashes(targetPrefix))) continue;
+    const relative = rootPrefix
+      ? fullKey.startsWith(`${rootPrefix}/`)
+        ? fullKey.slice(rootPrefix.length + 1)
+        : ''
+      : fullKey;
+    const normalizedRelative = trimSlashes(relative);
+    if (!normalizedRelative || (parentPath(normalizedRelative) || '') !== currentPath) continue;
+    items.push({
+      path: normalizedRelative,
+      name: basename(normalizedRelative) || normalizedRelative,
+      isDirectory: false,
+      size: Number(extractXmlFirst(content, 'Size') || 0) || null,
+      modifiedAt: parseHttpDate(extractXmlFirst(content, 'LastModified') || '') || null,
+    });
+  }
+
+  const deduped = new Map<string, RemoteBackupItem>();
+  for (const item of items) deduped.set(`${item.isDirectory ? 'd' : 'f'}:${item.path}`, item);
+
+  return {
+    provider: 's3',
+    currentPath,
+    parentPath: parentPath(currentPath),
+    items: sortRemoteItems(Array.from(deduped.values())),
+  };
+}
+
+async function downloadFromS3(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupFile> {
+  const normalized = normalizeRelativePath(relativePath);
+  if (!normalized || normalized.endsWith('/')) {
+    throw new Error('Please select a backup file');
+  }
+  const objectKey = normalizeS3ObjectKey(config, normalized);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'GET', url);
+  if (!response.ok) {
+    throw new Error(`S3 download failed: ${response.status}`);
+  }
+  return {
+    provider: 's3',
+    remotePath: normalized,
+    fileName: basename(normalized) || 'backup.zip',
+    contentType: String(response.headers.get('Content-Type') || 'application/zip').trim() || 'application/zip',
+    bytes: new Uint8Array(await response.arrayBuffer()),
+  };
+}
+
+async function deleteFromS3(config: S3BackupDestination, relativePath: string): Promise<void> {
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'DELETE', url);
+  if (!response.ok && response.status !== 404) {
+    throw new Error(`S3 delete failed: ${response.status}`);
+  }
+}
+
+async function existsInS3(config: S3BackupDestination, relativePath: string): Promise<boolean> {
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'HEAD', url);
+  if (response.status === 404) return false;
+  if (!response.ok) {
+    throw new Error(`S3 existence check failed: ${response.status}`);
+  }
+  return true;
+}
+
+interface ConfiguredDestinationAdapter {
+  provider: 'webdav' | 's3';
+  config: WebDavBackupDestination | S3BackupDestination;
+  upload: (config: WebDavBackupDestination | S3BackupDestination, archive: Uint8Array, fileName: string) => Promise<BackupUploadResult>;
+  putFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions) => Promise<void>;
+  list: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupListResult>;
+  download: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupFile>;
+  deleteFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<void>;
+  exists: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<boolean>;
+}
+
+export interface RemoteBackupTransferSession {
+  provider: BackupDestinationType;
+  uploadArchive(archive: Uint8Array, fileName: string): Promise<BackupUploadResult>;
+  putFile(relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions): Promise<void>;
+  list(relativePath: string): Promise<RemoteBackupListResult>;
+  download(relativePath: string): Promise<RemoteBackupFile>;
+  deleteFile(relativePath: string): Promise<void>;
+  exists(relativePath: string): Promise<boolean>;
+}
+
+function resolveConfiguredDestinationAdapter(
+  destination: BackupDestinationRecord
+): ConfiguredDestinationAdapter {
+  ensureDestinationConfigReady(destination);
+
+  if (destination.type === 'webdav') {
+    return {
+      provider: 'webdav',
+      config: destination.destination as WebDavBackupDestination,
+      upload: (config, archive, fileName) => uploadToWebDav(config as WebDavBackupDestination, archive, fileName),
+      putFile: (config, relativePath, bytes, options) => putToWebDav(config as WebDavBackupDestination, relativePath, bytes, options),
+      list: (config, relativePath) => listWebDavEntries(config as WebDavBackupDestination, relativePath),
+      download: (config, relativePath) => downloadFromWebDav(config as WebDavBackupDestination, relativePath),
+      deleteFile: (config, relativePath) => deleteFromWebDav(config as WebDavBackupDestination, relativePath),
+      exists: (config, relativePath) => existsInWebDav(config as WebDavBackupDestination, relativePath),
+    };
+  }
+  if (destination.type === 's3') {
+    return {
+      provider: 's3',
+      config: destination.destination as S3BackupDestination,
+      upload: (config, archive, fileName) => uploadToS3(config as S3BackupDestination, archive, fileName),
+      putFile: (config, relativePath, bytes, options) => putToS3(config as S3BackupDestination, relativePath, bytes, options),
+      list: (config, relativePath) => listS3Entries(config as S3BackupDestination, relativePath),
+      download: (config, relativePath) => downloadFromS3(config as S3BackupDestination, relativePath),
+      deleteFile: (config, relativePath) => deleteFromS3(config as S3BackupDestination, relativePath),
+      exists: (config, relativePath) => existsInS3(config as S3BackupDestination, relativePath),
+    };
+  }
+
+  throw new Error('Unsupported backup destination type');
+}
+
+export function createRemoteBackupTransferSession(destination: BackupDestinationRecord): RemoteBackupTransferSession {
+  const adapter = resolveConfiguredDestinationAdapter(destination);
+  const ensuredDirectories = adapter.provider === 'webdav' ? new Set<string>() : null;
+
+  const putFile = async (relativePath: string, bytes: Uint8Array, options: RemoteBackupFilePutOptions = {}): Promise<void> => {
+    const normalized = normalizeRelativePath(relativePath);
+    if (adapter.provider === 'webdav' && ensuredDirectories) {
+      await putToWebDav(adapter.config as WebDavBackupDestination, normalized, bytes, options, ensuredDirectories);
+      return;
+    }
+    await adapter.putFile(adapter.config, normalized, bytes, options);
+  };
+
+  return {
+    provider: adapter.provider,
+    uploadArchive: async (archive: Uint8Array, fileName: string) => {
+      await putFile(fileName, archive, { contentType: 'application/zip' });
+      return {
+        provider: adapter.provider,
+        remotePath: adapter.provider === 'webdav'
+          ? buildJoinedPath((adapter.config as WebDavBackupDestination).remotePath, fileName)
+          : normalizeS3ObjectKey(adapter.config as S3BackupDestination, fileName),
+      };
+    },
+    putFile,
+    list: async (relativePath: string) => adapter.list(adapter.config, relativePath),
+    download: async (relativePath: string) => adapter.download(adapter.config, relativePath),
+    deleteFile: async (relativePath: string) => adapter.deleteFile(adapter.config, normalizeRelativePath(relativePath)),
+    exists: async (relativePath: string) => adapter.exists(adapter.config, normalizeRelativePath(relativePath)),
+  };
+}
+
+export async function uploadBackupArchive(
+  destination: BackupDestinationRecord,
+  archive: Uint8Array,
+  fileName: string
+): Promise<BackupUploadResult> {
+  return createRemoteBackupTransferSession(destination).uploadArchive(archive, fileName);
+}
+
+export async function listRemoteBackupEntries(destination: BackupDestinationRecord, relativePath: string): Promise<RemoteBackupListResult> {
+  return createRemoteBackupTransferSession(destination).list(relativePath);
+}
+
+export async function downloadRemoteBackupFile(destination: BackupDestinationRecord, relativePath: string): Promise<RemoteBackupFile> {
+  return createRemoteBackupTransferSession(destination).download(relativePath);
+}
+
+export async function deleteRemoteBackupFile(destination: BackupDestinationRecord, relativePath: string): Promise<void> {
+  const normalized = ensureRemoteRestoreCandidate(relativePath);
+  await createRemoteBackupTransferSession(destination).deleteFile(normalized);
+}
+
+export async function remoteBackupFileExists(destination: BackupDestinationRecord, relativePath: string): Promise<boolean> {
+  const normalized = normalizeRelativePath(relativePath);
+  return createRemoteBackupTransferSession(destination).exists(normalized);
+}
+
+export async function uploadRemoteBackupFile(
+  destination: BackupDestinationRecord,
+  relativePath: string,
+  bytes: Uint8Array,
+  options: RemoteBackupFilePutOptions = {}
+): Promise<void> {
+  const normalized = normalizeRelativePath(relativePath);
+  await createRemoteBackupTransferSession(destination).putFile(normalized, bytes, options);
+}
+
+function compareBackupItemsByRecency(a: RemoteBackupItem, b: RemoteBackupItem, preferredFileName?: string): number {
+  if (preferredFileName) {
+    const aPreferred = a.name === preferredFileName ? 1 : 0;
+    const bPreferred = b.name === preferredFileName ? 1 : 0;
+    if (aPreferred !== bPreferred) return bPreferred - aPreferred;
+  }
+  const aTime = a.modifiedAt ? new Date(a.modifiedAt).getTime() : 0;
+  const bTime = b.modifiedAt ? new Date(b.modifiedAt).getTime() : 0;
+  if (aTime !== bTime) return bTime - aTime;
+  return b.name.localeCompare(a.name, 'en');
+}
+
+export async function pruneRemoteBackupArchives(
+  destination: BackupDestinationRecord,
+  retentionCount: number | null,
+  preferredFileName?: string
+): Promise<number> {
+  if (retentionCount === null) return 0;
+  const adapter = resolveConfiguredDestinationAdapter(destination);
+  const listing = await adapter.list(adapter.config, '');
+  const backupFiles = listing.items
+    .filter((item) => !item.isDirectory && isBackupArchiveName(item.name))
+    .sort((a, b) => compareBackupItemsByRecency(a, b, preferredFileName));
+  if (backupFiles.length <= retentionCount) return 0;
+  for (const item of backupFiles.slice(retentionCount)) {
+    await adapter.deleteFile(adapter.config, item.path);
+  }
+  return backupFiles.length - retentionCount;
+}
+
+export function ensureRemoteRestoreCandidate(relativePath: string): string {
+  const normalized = normalizeRelativePath(relativePath);
+  if (!normalized || !/\.zip$/i.test(normalized)) {
+    throw new Error('Please select a backup ZIP file');
+  }
+  return normalized;
+}

src/services/blob-store.ts

@@ -0,0 +1,124 @@
+import { Env } from '../types';
+
+const DEFAULT_CONTENT_TYPE = 'application/octet-stream';
+export const KV_MAX_OBJECT_BYTES = 25 * 1024 * 1024;
+
+interface KVBlobMetadata {
+  size?: number;
+  contentType?: string;
+  customMetadata?: Record<string, string> | null;
+}
+
+export interface BlobObject {
+  body: ReadableStream | null;
+  size: number;
+  contentType: string;
+}
+
+export interface PutBlobOptions {
+  size: number;
+  contentType?: string;
+  customMetadata?: Record<string, string>;
+}
+
+function hasR2Storage(env: Env): env is Env & { ATTACHMENTS: R2Bucket } {
+  return !!env.ATTACHMENTS;
+}
+
+function hasKvStorage(env: Env): env is Env & { ATTACHMENTS_KV: KVNamespace } {
+  return !!env.ATTACHMENTS_KV;
+}
+
+export function getBlobStorageKind(env: Env): 'r2' | 'kv' | null {
+  // Keep R2 as preferred backend when both are bound.
+  if (hasR2Storage(env)) return 'r2';
+  if (hasKvStorage(env)) return 'kv';
+  return null;
+}
+
+export function getBlobStorageMaxBytes(env: Env, configuredLimit: number): number {
+  if (getBlobStorageKind(env) === 'kv') {
+    return Math.min(configuredLimit, KV_MAX_OBJECT_BYTES);
+  }
+  return configuredLimit;
+}
+
+export function getAttachmentObjectKey(cipherId: string, attachmentId: string): string {
+  return `${cipherId}/${attachmentId}`;
+}
+
+export function getSendFileObjectKey(sendId: string, fileId: string): string {
+  return `sends/${sendId}/${fileId}`;
+}
+
+export async function putBlobObject(
+  env: Env,
+  key: string,
+  value: string | ArrayBuffer | ArrayBufferView | ReadableStream,
+  options: PutBlobOptions
+): Promise<void> {
+  const contentType = options.contentType || DEFAULT_CONTENT_TYPE;
+
+  if (hasR2Storage(env)) {
+    await env.ATTACHMENTS.put(key, value, {
+      httpMetadata: { contentType },
+      customMetadata: options.customMetadata,
+    });
+    return;
+  }
+
+  if (hasKvStorage(env)) {
+    if (options.size > KV_MAX_OBJECT_BYTES) {
+      throw new Error('KV object too large');
+    }
+    const metadata: KVBlobMetadata = {
+      size: options.size,
+      contentType,
+      customMetadata: options.customMetadata || null,
+    };
+    await env.ATTACHMENTS_KV.put(key, value, { metadata });
+    return;
+  }
+
+  throw new Error('Attachment storage is not configured');
+}
+
+export async function getBlobObject(env: Env, key: string): Promise<BlobObject | null> {
+  if (hasR2Storage(env)) {
+    const object = await env.ATTACHMENTS.get(key);
+    if (!object) return null;
+    return {
+      body: object.body,
+      size: Number(object.size) || 0,
+      contentType: object.httpMetadata?.contentType || DEFAULT_CONTENT_TYPE,
+    };
+  }
+
+  if (hasKvStorage(env)) {
+    const result = await env.ATTACHMENTS_KV.getWithMetadata<KVBlobMetadata>(key, 'arrayBuffer');
+    if (!result.value) return null;
+
+    const sizeFromMeta = Number(result.metadata?.size || 0);
+    const size = sizeFromMeta > 0 ? sizeFromMeta : result.value.byteLength;
+    const body = new Response(result.value).body;
+
+    return {
+      body,
+      size,
+      contentType: result.metadata?.contentType || DEFAULT_CONTENT_TYPE,
+    };
+  }
+
+  return null;
+}
+
+export async function deleteBlobObject(env: Env, key: string): Promise<void> {
+  if (hasR2Storage(env)) {
+    await env.ATTACHMENTS.delete(key);
+    return;
+  }
+  if (hasKvStorage(env)) {
+    await env.ATTACHMENTS_KV.delete(key);
+    return;
+  }
+}

src/services/domain-rules.ts

@@ -0,0 +1,222 @@
+import bitwardenGlobalDomainsRaw from '../static/global_domains.bitwarden.json';
+import customGlobalDomainsRaw from '../static/global_domains.custom.json';
+import type { CustomEquivalentDomain, DomainRulesResponse, GlobalEquivalentDomain } from '../types';
+import { normalizeEquivalentDomain } from '../../shared/domain-normalize';
+
+// CONTRACT:
+// Equivalent domains are a Bitwarden compatibility surface. The DB stores both
+// the full custom rule list and the derived active equivalent-domain groups:
+// - custom_equivalent_domains: UI/client rules with id + excluded state.
+// - equivalent_domains: active groups derived from non-excluded custom rules.
+// - excluded_global_equivalent_domains: disabled global rule type ids.
+// Do not treat equivalent_domains and custom_equivalent_domains as accidental
+// duplicates without a migration and compatibility plan.
+type RawGlobalDomain = Partial<GlobalEquivalentDomain> & {
+  Type?: unknown;
+  Domains?: unknown;
+  Excluded?: unknown;
+};
+
+function normalizeDomain(value: unknown): string {
+  return normalizeEquivalentDomain(value);
+}
+
+function normalizeGlobalDomain(entry: RawGlobalDomain): GlobalEquivalentDomain | null {
+  const type = Number(entry.type ?? entry.Type);
+  if (!Number.isInteger(type)) return null;
+
+  const rawDomains = entry.domains ?? entry.Domains;
+  if (!Array.isArray(rawDomains)) return null;
+
+  const domains = Array.from(new Set(rawDomains.map(normalizeDomain).filter(Boolean)));
+  if (domains.length < 2) return null;
+
+  return {
+    type,
+    domains,
+    excluded: Boolean(entry.excluded ?? entry.Excluded ?? false),
+  };
+}
+
+function normalizeGlobalDomains(input: unknown): GlobalEquivalentDomain[] {
+  if (!Array.isArray(input)) return [];
+
+  const seen = new Set<number>();
+  const out: GlobalEquivalentDomain[] = [];
+  for (const entry of input) {
+    const normalized = normalizeGlobalDomain(entry as RawGlobalDomain);
+    if (!normalized || seen.has(normalized.type)) continue;
+    seen.add(normalized.type);
+    out.push(normalized);
+  }
+  return out;
+}
+
+const bitwardenGlobalDomains = normalizeGlobalDomains(bitwardenGlobalDomainsRaw);
+const customGlobalDomains = normalizeGlobalDomains(customGlobalDomainsRaw);
+
+export const globalDomains: readonly GlobalEquivalentDomain[] = [
+  ...bitwardenGlobalDomains,
+  ...customGlobalDomains,
+];
+
+export function normalizeEquivalentDomains(input: unknown): string[][] {
+  if (!Array.isArray(input)) return [];
+
+  const groups: string[][] = [];
+  const seenGroups = new Set<string>();
+  for (const group of input) {
+    if (!Array.isArray(group)) continue;
+    const domains = Array.from(new Set(group.map(normalizeDomain).filter(Boolean)));
+    if (domains.length < 2) continue;
+    const key = domains.slice().sort().join('\n');
+    if (seenGroups.has(key)) continue;
+    seenGroups.add(key);
+    groups.push(domains);
+  }
+  return groups;
+}
+
+export function mergeEquivalentDomainGroups(input: string[][]): string[][] {
+  const parent = new Map<string, string>();
+
+  function find(domain: string): string {
+    const current = parent.get(domain);
+    if (!current) {
+      parent.set(domain, domain);
+      return domain;
+    }
+    if (current === domain) return domain;
+    const root = find(current);
+    parent.set(domain, root);
+    return root;
+  }
+
+  function union(a: string, b: string): void {
+    const rootA = find(a);
+    const rootB = find(b);
+    if (rootA !== rootB) parent.set(rootB, rootA);
+  }
+
+  for (const group of normalizeEquivalentDomains(input)) {
+    if (group.length < 2) continue;
+    const [first, ...rest] = group;
+    find(first);
+    for (const domain of rest) union(first, domain);
+  }
+
+  const components = new Map<string, string[]>();
+  for (const domain of parent.keys()) {
+    const root = find(domain);
+    const group = components.get(root) || [];
+    group.push(domain);
+    components.set(root, group);
+  }
+
+  return Array.from(components.values())
+    .map((group) => group.sort())
+    .filter((group) => group.length >= 2)
+    .sort((a, b) => a[0].localeCompare(b[0]));
+}
+
+export function expandCustomEquivalentDomainsWithGlobals(
+  customGroups: string[][],
+  activeGlobalGroups: string[][]
+): string[][] {
+  const normalizedCustomGroups = normalizeEquivalentDomains(customGroups);
+  if (!normalizedCustomGroups.length) return [];
+
+  const customDomains = new Set(normalizedCustomGroups.flat());
+  return mergeEquivalentDomainGroups([
+    ...activeGlobalGroups,
+    ...normalizedCustomGroups,
+  ]).filter((group) => group.some((domain) => customDomains.has(domain)));
+}
+
+function createCustomDomainId(domains: string[], index: number): string {
+  return `custom:${domains.slice().sort().join('|')}:${index}`;
+}
+
+export function normalizeCustomEquivalentDomains(input: unknown): CustomEquivalentDomain[] {
+  if (!Array.isArray(input)) return [];
+
+  const rules: CustomEquivalentDomain[] = [];
+  const seenGroups = new Set<string>();
+  for (const [index, item] of input.entries()) {
+    const record = Array.isArray(item)
+      ? { domains: item, excluded: false, id: '' }
+      : item && typeof item === 'object'
+        ? item as Record<string, unknown>
+        : null;
+    if (!record) continue;
+
+    const domains = normalizeEquivalentDomains([record.domains ?? record.Domains])[0];
+    if (!domains) continue;
+
+    const key = domains.slice().sort().join('\n');
+    if (seenGroups.has(key)) continue;
+    seenGroups.add(key);
+
+    const rawId = String(record.id ?? record.Id ?? '').trim();
+    rules.push({
+      id: rawId || createCustomDomainId(domains, index),
+      domains,
+      excluded: Boolean(record.excluded ?? record.Excluded ?? false),
+    });
+  }
+  return rules;
+}
+
+export function customRulesToActiveEquivalentDomains(rules: CustomEquivalentDomain[]): string[][] {
+  return mergeEquivalentDomainGroups(rules
+    .filter((rule) => !rule.excluded)
+    .map((rule) => rule.domains));
+}
+
+export function normalizeExcludedGlobalTypes(input: unknown): number[] {
+  if (!Array.isArray(input)) return [];
+
+  const validTypes = new Set(globalDomains.map((entry) => entry.type));
+  const seen = new Set<number>();
+  const out: number[] = [];
+  for (const item of input) {
+    const type = Number(typeof item === 'object' && item !== null ? (item as Record<string, unknown>).type : item);
+    const excluded = typeof item === 'object' && item !== null
+      ? Boolean((item as Record<string, unknown>).excluded)
+      : true;
+    if (!excluded || !Number.isInteger(type) || !validTypes.has(type) || seen.has(type)) continue;
+    seen.add(type);
+    out.push(type);
+  }
+  return out;
+}
+
+export function buildDomainsResponse(
+  equivalentDomains: string[][],
+  customEquivalentDomains: CustomEquivalentDomain[],
+  excludedGlobalEquivalentDomains: number[],
+  options: { omitExcludedGlobals?: boolean } = {}
+): DomainRulesResponse {
+  const excluded = new Set(excludedGlobalEquivalentDomains);
+  const activeGlobalDomainGroups = globalDomains
+    .filter((entry) => !excluded.has(entry.type))
+    .map((entry) => entry.domains);
+  const mergedEquivalentDomains = expandCustomEquivalentDomainsWithGlobals(
+    equivalentDomains,
+    activeGlobalDomainGroups
+  );
+  const globals = globalDomains
+    .map((entry) => ({
+      type: entry.type,
+      domains: entry.domains,
+      excluded: excluded.has(entry.type),
+    }))
+    .filter((entry) => !options.omitExcludedGlobals || !entry.excluded);
+
+  return {
+    equivalentDomains: mergedEquivalentDomains,
+    customEquivalentDomains,
+    globalEquivalentDomains: globals,
+    object: 'domains',
+  };
+}

src/services/ratelimit.ts

@@ -1,30 +1,76 @@
-// D1-backed rate limiting.
-// Notes:
-// - Login attempts are tracked per email.
-// - API rate is tracked per identifier per fixed window.
+import { LIMITS } from '../config/limits';
+
+// Rate limiting service.
+// - Login attempts: D1-backed (low volume, security-critical, needs cross-colo persistence).
+// - API budgets: Cloudflare Cache API (high volume, auto-expires, zero D1 writes).
 
-// Rate limit configuration
 const CONFIG = {
-  LOGIN_MAX_ATTEMPTS: 15,
-  LOGIN_LOCKOUT_MINUTES: 5,
-
-  API_REQUESTS_PER_MINUTE: 300,
-  API_WINDOW_SECONDS: 60,
+  LOGIN_MAX_ATTEMPTS: LIMITS.rateLimit.loginMaxAttempts,
+  LOGIN_LOCKOUT_MINUTES: LIMITS.rateLimit.loginLockoutMinutes,
+  API_WINDOW_SECONDS: LIMITS.rateLimit.apiWindowSeconds,
 };
 
 export class RateLimitService {
+  private static loginIpTableReady = false;
+  private static lastLoginIpCleanupAt = 0;
+
+  private static readonly PERIODIC_CLEANUP_PROBABILITY = LIMITS.rateLimit.cleanupProbability;
+  private static readonly LOGIN_IP_CLEANUP_INTERVAL_MS = LIMITS.rateLimit.loginIpCleanupIntervalMs;
+  private static readonly LOGIN_IP_RETENTION_MS = LIMITS.rateLimit.loginIpRetentionMs;
+
   constructor(private db: D1Database) {}
 
-  async checkLoginAttempt(email: string): Promise<{
+  private shouldRunCleanup(lastRunAt: number, intervalMs: number): boolean {
+    const now = Date.now();
+    if (now - lastRunAt < intervalMs) return false;
+    return Math.random() < RateLimitService.PERIODIC_CLEANUP_PROBABILITY;
+  }
+
+  private async maybeCleanupLoginAttemptsIp(nowMs: number): Promise<void> {
+    if (!this.shouldRunCleanup(RateLimitService.lastLoginIpCleanupAt, RateLimitService.LOGIN_IP_CLEANUP_INTERVAL_MS)) {
+      return;
+    }
+
+    const cutoff = nowMs - RateLimitService.LOGIN_IP_RETENTION_MS;
+    await this.db
+      .prepare(
+        'DELETE FROM login_attempts_ip WHERE updated_at < ? AND (locked_until IS NULL OR locked_until < ?)'
+      )
+      .bind(cutoff, nowMs)
+      .run();
+    RateLimitService.lastLoginIpCleanupAt = nowMs;
+  }
+
+  private async ensureLoginIpTable(): Promise<void> {
+    if (RateLimitService.loginIpTableReady) return;
+
+    await this.db
+      .prepare(
+        'CREATE TABLE IF NOT EXISTS login_attempts_ip (' +
+        'ip TEXT PRIMARY KEY, ' +
+        'attempts INTEGER NOT NULL, ' +
+        'locked_until INTEGER, ' +
+        'updated_at INTEGER NOT NULL' +
+        ')'
+      )
+      .run();
+
+    RateLimitService.loginIpTableReady = true;
+  }
+
+  async checkLoginAttempt(ip: string): Promise<{
     allowed: boolean;
     remainingAttempts: number;
     retryAfterSeconds?: number;
   }> {
-    const key = email.toLowerCase();
+    await this.ensureLoginIpTable();
+
+    const key = ip.trim() || 'unknown';
     const now = Date.now();
+    await this.maybeCleanupLoginAttemptsIp(now);
 
     const row = await this.db
-      .prepare('SELECT attempts, locked_until FROM login_attempts WHERE email = ?')
+      .prepare('SELECT attempts, locked_until FROM login_attempts_ip WHERE ip = ?')
       .bind(key)
       .first<{ attempts: number; locked_until: number | null }>();
 
@@ -41,7 +87,7 @@ export class RateLimitService {
     }
 
     if (row.locked_until && row.locked_until <= now) {
-      await this.db.prepare('DELETE FROM login_attempts WHERE email = ?').bind(key).run();
+      await this.db.prepare('DELETE FROM login_attempts_ip WHERE ip = ?').bind(key).run();
       return { allowed: true, remainingAttempts: CONFIG.LOGIN_MAX_ATTEMPTS };
     }
 
@@ -49,23 +95,26 @@ export class RateLimitService {
     return { allowed: true, remainingAttempts };
   }
 
-  async recordFailedLogin(email: string): Promise<{ locked: boolean; retryAfterSeconds?: number }> {
-    const key = email.toLowerCase();
+  async recordFailedLogin(ip: string): Promise<{ locked: boolean; retryAfterSeconds?: number }> {
+    await this.ensureLoginIpTable();
+
+    const key = ip.trim() || 'unknown';
     const now = Date.now();
+    await this.maybeCleanupLoginAttemptsIp(now);
 
     // D1 in Workers forbids raw BEGIN/COMMIT statements.
     // Use a single atomic UPSERT to increment attempts.
-    // This is concurrency-safe because the row is keyed by email.
+    // This is concurrency-safe because the row is keyed by IP.
     await this.db
       .prepare(
-        'INSERT INTO login_attempts(email, attempts, locked_until, updated_at) VALUES(?, 1, NULL, ?) ' +
-        'ON CONFLICT(email) DO UPDATE SET attempts = attempts + 1, updated_at = excluded.updated_at'
+        'INSERT INTO login_attempts_ip(ip, attempts, locked_until, updated_at) VALUES(?, 1, NULL, ?) ' +
+        'ON CONFLICT(ip) DO UPDATE SET attempts = attempts + 1, updated_at = excluded.updated_at'
       )
       .bind(key, now)
       .run();
 
     const row = await this.db
-      .prepare('SELECT attempts FROM login_attempts WHERE email = ?')
+      .prepare('SELECT attempts FROM login_attempts_ip WHERE ip = ?')
       .bind(key)
       .first<{ attempts: number }>();
 
@@ -73,7 +122,7 @@ export class RateLimitService {
     if (attempts >= CONFIG.LOGIN_MAX_ATTEMPTS) {
       const lockedUntil = now + CONFIG.LOGIN_LOCKOUT_MINUTES * 60 * 1000;
       await this.db
-        .prepare('UPDATE login_attempts SET locked_until = ?, updated_at = ? WHERE email = ?')
+        .prepare('UPDATE login_attempts_ip SET locked_until = ?, updated_at = ? WHERE ip = ?')
         .bind(lockedUntil, now, key)
         .run();
       return { locked: true, retryAfterSeconds: CONFIG.LOGIN_LOCKOUT_MINUTES * 60 };
@@ -82,56 +131,227 @@ export class RateLimitService {
     return { locked: false };
   }
 
-  async clearLoginAttempts(email: string): Promise<void> {
-    await this.db.prepare('DELETE FROM login_attempts WHERE email = ?').bind(email.toLowerCase()).run();
+  async clearLoginAttempts(ip: string): Promise<void> {
+    await this.ensureLoginIpTable();
+    const key = ip.trim() || 'unknown';
+    await this.db.prepare('DELETE FROM login_attempts_ip WHERE ip = ?').bind(key).run();
   }
 
-  async checkApiRateLimit(identifier: string): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
+  // Cache API-backed fixed-window rate limiter.
+  // Uses Cloudflare edge cache instead of D1 — zero database writes, auto-expires via TTL.
+  // Per-colo isolation is acceptable (matches Cloudflare's own rate limiting behaviour).
+  private async consumeFixedWindowBudget(
+    identifier: string,
+    maxRequests: number,
+    windowSeconds: number
+  ): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
     const nowSec = Math.floor(Date.now() / 1000);
-    const windowStart = nowSec - (nowSec % CONFIG.API_WINDOW_SECONDS);
-    const windowEnd = windowStart + CONFIG.API_WINDOW_SECONDS;
+    const windowStart = nowSec - (nowSec % windowSeconds);
+    const windowEnd = windowStart + windowSeconds;
+    const ttl = Math.max(1, windowEnd - nowSec);
 
-    const row = await this.db
-      .prepare('SELECT count FROM api_rate_limits WHERE identifier = ? AND window_start = ?')
-      .bind(identifier, windowStart)
-      .first<{ count: number }>();
+    const cache = await caches.open('rate-limit');
+    const cacheKey = new Request(`https://rl/${identifier}/${windowStart}`);
 
-    const count = row?.count || 0;
-    if (count >= CONFIG.API_REQUESTS_PER_MINUTE) {
-      return {
-        allowed: false,
-        remaining: 0,
-        retryAfterSeconds: windowEnd - nowSec,
-      };
+    const cached = await cache.match(cacheKey);
+    let count = 0;
+    if (cached) {
+      count = parseInt(await cached.text(), 10) || 0;
     }
 
-    return {
-      allowed: true,
-      remaining: CONFIG.API_REQUESTS_PER_MINUTE - count,
-    };
+    if (count >= maxRequests) {
+      return { allowed: false, remaining: 0, retryAfterSeconds: ttl };
+    }
+
+    count++;
+    await cache.put(
+      cacheKey,
+      new Response(String(count), {
+        headers: { 'Cache-Control': `public, max-age=${ttl}` },
+      })
+    );
+
+    return { allowed: true, remaining: Math.max(0, maxRequests - count) };
   }
 
-  async incrementApiCount(identifier: string): Promise<void> {
-    const nowSec = Math.floor(Date.now() / 1000);
-    const windowStart = nowSec - (nowSec % CONFIG.API_WINDOW_SECONDS);
+  // General-purpose fixed-window budget.
+  // Callers supply an identifier (must be unique per rate-limit category) and the
+  // per-window maximum.  This single method replaces all previous specialised
+  // budget helpers (write / sync / knownDevice / publicSend).
+  async consumeBudget(
+    identifier: string,
+    maxRequests: number
+  ): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
+    return this.consumeFixedWindowBudget(identifier, maxRequests, CONFIG.API_WINDOW_SECONDS);
+  }
 
-    // Atomic increment via UPSERT.
-    await this.db
-      .prepare(
-        'INSERT INTO api_rate_limits(identifier, window_start, count) VALUES(?, ?, 1) ' +
-        'ON CONFLICT(identifier, window_start) DO UPDATE SET count = count + 1'
-      )
-      .bind(identifier, windowStart)
-      .run();
+  async consumeBudgetWithWindow(
+    identifier: string,
+    maxRequests: number,
+    windowSeconds: number
+  ): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
+    return this.consumeFixedWindowBudget(identifier, maxRequests, windowSeconds);
   }
 }
 
-export function getClientIdentifier(request: Request): string {
-  const cfIp = request.headers.get('CF-Connecting-IP');
-  if (cfIp) return cfIp;
+function parseIpv4Octets(input: string): number[] | null {
+  const parts = input.split('.');
+  if (parts.length !== 4) return null;
 
-  const forwardedFor = request.headers.get('X-Forwarded-For');
-  if (forwardedFor) return forwardedFor.split(',')[0].trim();
-
-  return 'unknown';
+  const octets: number[] = [];
+  for (const part of parts) {
+    if (!/^\d{1,3}$/.test(part)) return null;
+    const value = Number(part);
+    if (!Number.isInteger(value) || value < 0 || value > 255) return null;
+    octets.push(value);
+  }
+  return octets;
+}
+
+function parseIpv6Hextets(input: string): number[] | null {
+  let value = input.trim().toLowerCase();
+  if (!value) return null;
+
+  if (value.startsWith('[') && value.endsWith(']')) {
+    value = value.slice(1, -1);
+  }
+  const zoneIndex = value.indexOf('%');
+  if (zoneIndex >= 0) {
+    value = value.slice(0, zoneIndex);
+  }
+  if (!value.includes(':')) return null;
+
+  // Handle IPv4-mapped tail (e.g. ::ffff:192.0.2.1).
+  if (value.includes('.')) {
+    const lastColon = value.lastIndexOf(':');
+    if (lastColon < 0) return null;
+    const ipv4Tail = value.slice(lastColon + 1);
+    const octets = parseIpv4Octets(ipv4Tail);
+    if (!octets) return null;
+    const high = ((octets[0] << 8) | octets[1]).toString(16);
+    const low = ((octets[2] << 8) | octets[3]).toString(16);
+    value = `${value.slice(0, lastColon)}:${high}:${low}`;
+  }
+
+  const doubleColon = value.indexOf('::');
+  if (doubleColon !== value.lastIndexOf('::')) return null;
+
+  const parsePart = (part: string): number | null => {
+    if (!/^[0-9a-f]{1,4}$/.test(part)) return null;
+    const n = parseInt(part, 16);
+    return Number.isNaN(n) ? null : n;
+  };
+
+  const parseParts = (parts: string[]): number[] | null => {
+    const out: number[] = [];
+    for (const p of parts) {
+      if (!p) return null;
+      const n = parsePart(p);
+      if (n === null) return null;
+      out.push(n);
+    }
+    return out;
+  };
+
+  if (doubleColon >= 0) {
+    const [headRaw, tailRaw] = value.split('::');
+    const head = headRaw ? headRaw.split(':') : [];
+    const tail = tailRaw ? tailRaw.split(':') : [];
+
+    const headNums = parseParts(head);
+    const tailNums = parseParts(tail);
+    if (!headNums || !tailNums) return null;
+
+    const missing = 8 - (headNums.length + tailNums.length);
+    if (missing < 1) return null;
+
+    return [...headNums, ...new Array<number>(missing).fill(0), ...tailNums];
+  }
+
+  const all = parseParts(value.split(':'));
+  if (!all || all.length !== 8) return null;
+  return all;
+}
+
+function normalizeClientIpForRateLimit(rawIp: string): string | null {
+  const input = rawIp.trim();
+  if (!input) return null;
+
+  const ipv4 = parseIpv4Octets(input);
+  if (ipv4) {
+    return `ip4:${ipv4.join('.')}`;
+  }
+
+  const ipv6 = parseIpv6Hextets(input);
+  if (!ipv6) return null;
+
+  // Handle IPv4-mapped / IPv4-compatible IPv6 as IPv4 identity.
+  // Examples: ::ffff:192.0.2.1, ::192.0.2.1
+  if (
+    ipv6[0] === 0 &&
+    ipv6[1] === 0 &&
+    ipv6[2] === 0 &&
+    ipv6[3] === 0 &&
+    ipv6[4] === 0 &&
+    (ipv6[5] === 0xffff || ipv6[5] === 0)
+  ) {
+    const octets = [ipv6[6] >> 8, ipv6[6] & 0xff, ipv6[7] >> 8, ipv6[7] & 0xff];
+    return `ip4:${octets.join('.')}`;
+  }
+
+  // Collapse to /64 to reduce brute-force bypass via IPv6 address rotation.
+  const prefix64 = ipv6
+    .slice(0, 4)
+    .map(part => part.toString(16).padStart(4, '0'))
+    .join(':');
+  return `ip6:${prefix64}`;
+}
+
+function isLocalRequest(request: Request): boolean {
+  const isLoopbackHost = (host: string | null): boolean => {
+    if (!host) return false;
+    const normalized = host.split(':')[0].trim().toLowerCase();
+    return (
+      normalized === 'localhost' ||
+      normalized.endsWith('.localhost') ||
+      normalized === '127.0.0.1' ||
+      normalized === '0.0.0.0' ||
+      normalized === '::1' ||
+      normalized === '[::1]'
+    );
+  };
+
+  try {
+    if (isLoopbackHost(new URL(request.url).hostname)) return true;
+  } catch {
+    // Ignore malformed URL and fall back to Host header check.
+  }
+
+  return isLoopbackHost(request.headers.get('Host'));
+}
+
+export function getClientIdentifier(request: Request): string | null {
+  // Strict fallback order:
+  // 1) CF-Connecting-IP
+  // 2) X-Real-IP
+  // 3) first item of X-Forwarded-For
+  // If none are present/valid, treat client IP as unavailable.
+  const candidates: Array<string | null> = [
+    request.headers.get('CF-Connecting-IP'),
+    request.headers.get('X-Real-IP'),
+    request.headers.get('X-Forwarded-For')?.split(',')[0]?.trim() || null,
+  ];
+
+  for (const raw of candidates) {
+    if (!raw) continue;
+    const normalized = normalizeClientIpForRateLimit(raw);
+    if (normalized) return normalized;
+  }
+
+  // Local dev (wrangler dev / localhost): allow a deterministic loopback identifier.
+  if (isLocalRequest(request)) {
+    return 'ip4:127.0.0.1';
+  }
+
+  return null;
 }

src/services/storage-account-passkey-repo.ts

@@ -0,0 +1,331 @@
+import type { AccountPasskeyChallenge, AccountPasskeyChallengeScope, AccountPasskeyCredential } from '../types';
+
+type SafeBindFn = (stmt: D1PreparedStatement, ...values: any[]) => D1PreparedStatement;
+
+let accountPasskeySchemaReady = false;
+
+const ACCOUNT_PASSKEY_CREDENTIAL_COLUMN_DEFS = [
+  { name: 'id', sql: 'id TEXT' },
+  { name: 'user_id', sql: "user_id TEXT NOT NULL DEFAULT ''" },
+  { name: 'name', sql: "name TEXT NOT NULL DEFAULT 'Account passkey'" },
+  { name: 'public_key', sql: "public_key TEXT NOT NULL DEFAULT ''" },
+  { name: 'credential_id', sql: "credential_id TEXT NOT NULL DEFAULT ''" },
+  { name: 'counter', sql: 'counter INTEGER NOT NULL DEFAULT 0' },
+  { name: 'type', sql: 'type TEXT' },
+  { name: 'aa_guid', sql: 'aa_guid TEXT' },
+  { name: 'transports', sql: 'transports TEXT' },
+  { name: 'encrypted_user_key', sql: 'encrypted_user_key TEXT' },
+  { name: 'encrypted_public_key', sql: 'encrypted_public_key TEXT' },
+  { name: 'encrypted_private_key', sql: 'encrypted_private_key TEXT' },
+  { name: 'supports_prf', sql: 'supports_prf INTEGER NOT NULL DEFAULT 0' },
+  { name: 'created_at', sql: "created_at TEXT NOT NULL DEFAULT ''" },
+  { name: 'updated_at', sql: "updated_at TEXT NOT NULL DEFAULT ''" },
+] as const;
+
+const ACCOUNT_PASSKEY_CHALLENGE_COLUMNS = [
+  'challenge_hash',
+  'scope',
+  'user_id',
+  'expires_at',
+  'used_at',
+  'created_at',
+] as const;
+
+async function tableColumns(db: D1Database, tableName: 'webauthn_credentials' | 'webauthn_challenges'): Promise<Set<string>> {
+  const result = await db.prepare(`PRAGMA table_info(${tableName})`).all<{ name: string }>();
+  return new Set((result.results || []).map((row) => String(row.name || '').trim()).filter(Boolean));
+}
+
+async function ensureAccountPasskeySchema(db: D1Database): Promise<void> {
+  if (accountPasskeySchemaReady) return;
+
+  await db
+    .prepare(
+      'CREATE TABLE IF NOT EXISTS webauthn_credentials (' +
+        'id TEXT PRIMARY KEY, user_id TEXT NOT NULL, name TEXT NOT NULL, public_key TEXT NOT NULL, credential_id TEXT NOT NULL, counter INTEGER NOT NULL DEFAULT 0, ' +
+        'type TEXT, aa_guid TEXT, transports TEXT, encrypted_user_key TEXT, encrypted_public_key TEXT, encrypted_private_key TEXT, supports_prf INTEGER NOT NULL DEFAULT 0, ' +
+        'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
+        'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)'
+    )
+    .run();
+  let credentialColumns = await tableColumns(db, 'webauthn_credentials');
+  for (const column of ACCOUNT_PASSKEY_CREDENTIAL_COLUMN_DEFS) {
+    if (!credentialColumns.has(column.name)) {
+      await db.prepare(`ALTER TABLE webauthn_credentials ADD COLUMN ${column.sql}`).run();
+    }
+  }
+  credentialColumns = await tableColumns(db, 'webauthn_credentials');
+  if (!credentialColumns.has('credential_id')) {
+    throw new Error('webauthn_credentials schema is missing credential_id');
+  }
+  await db.prepare('CREATE UNIQUE INDEX IF NOT EXISTS idx_webauthn_credentials_id ON webauthn_credentials(id)').run();
+  await db.prepare('CREATE UNIQUE INDEX IF NOT EXISTS idx_webauthn_credentials_credential_id ON webauthn_credentials(credential_id)').run();
+  await db.prepare('CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user ON webauthn_credentials(user_id)').run();
+  await db.prepare('CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user_updated ON webauthn_credentials(user_id, updated_at)').run();
+
+  await db
+    .prepare(
+      'CREATE TABLE IF NOT EXISTS webauthn_challenges (' +
+        'challenge_hash TEXT PRIMARY KEY, scope TEXT NOT NULL, user_id TEXT, expires_at INTEGER NOT NULL, used_at INTEGER, created_at INTEGER NOT NULL)'
+    )
+    .run();
+  const challengeColumns = await tableColumns(db, 'webauthn_challenges');
+  const challengeSchemaComplete = ACCOUNT_PASSKEY_CHALLENGE_COLUMNS.every((column) => challengeColumns.has(column));
+  if (!challengeSchemaComplete) {
+    await db.prepare('DROP TABLE IF EXISTS webauthn_challenges').run();
+    await db
+      .prepare(
+        'CREATE TABLE webauthn_challenges (' +
+          'challenge_hash TEXT PRIMARY KEY, scope TEXT NOT NULL, user_id TEXT, expires_at INTEGER NOT NULL, used_at INTEGER, created_at INTEGER NOT NULL)'
+      )
+      .run();
+  }
+  await db.prepare('CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_expires ON webauthn_challenges(expires_at)').run();
+  await db.prepare('CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_user_scope ON webauthn_challenges(user_id, scope)').run();
+
+  accountPasskeySchemaReady = true;
+}
+
+function parseTransports(value: string | null): string[] | null {
+  if (!value) return null;
+  try {
+    const parsed = JSON.parse(value);
+    if (!Array.isArray(parsed)) return null;
+    return parsed.map((item) => String(item || '').trim()).filter(Boolean);
+  } catch {
+    return null;
+  }
+}
+
+function mapCredentialRow(row: {
+  id: string;
+  user_id: string;
+  name: string;
+  public_key: string;
+  credential_id: string;
+  counter: number;
+  type: string | null;
+  aa_guid: string | null;
+  transports: string | null;
+  encrypted_user_key: string | null;
+  encrypted_public_key: string | null;
+  encrypted_private_key: string | null;
+  supports_prf: number;
+  created_at: string;
+  updated_at: string;
+}): AccountPasskeyCredential {
+  return {
+    id: row.id,
+    userId: row.user_id,
+    name: row.name,
+    publicKey: row.public_key,
+    credentialId: row.credential_id,
+    counter: Number(row.counter || 0),
+    type: row.type ?? null,
+    aaGuid: row.aa_guid ?? null,
+    transports: parseTransports(row.transports),
+    encryptedUserKey: row.encrypted_user_key ?? null,
+    encryptedPublicKey: row.encrypted_public_key ?? null,
+    encryptedPrivateKey: row.encrypted_private_key ?? null,
+    supportsPrf: !!row.supports_prf,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  };
+}
+
+function mapChallengeRow(row: {
+  challenge_hash: string;
+  scope: AccountPasskeyChallengeScope;
+  user_id: string | null;
+  expires_at: number;
+  used_at: number | null;
+  created_at: number;
+}): AccountPasskeyChallenge {
+  return {
+    challengeHash: row.challenge_hash,
+    scope: row.scope,
+    userId: row.user_id ?? null,
+    expiresAt: Number(row.expires_at || 0),
+    usedAt: row.used_at == null ? null : Number(row.used_at),
+    createdAt: Number(row.created_at || 0),
+  };
+}
+
+export async function saveAccountPasskeyCredential(
+  db: D1Database,
+  safeBind: SafeBindFn,
+  credential: AccountPasskeyCredential
+): Promise<void> {
+  await ensureAccountPasskeySchema(db);
+  await safeBind(
+    db.prepare(
+      'INSERT INTO webauthn_credentials(' +
+        'id, user_id, name, public_key, credential_id, counter, type, aa_guid, transports, ' +
+        'encrypted_user_key, encrypted_public_key, encrypted_private_key, supports_prf, created_at, updated_at' +
+        ') VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ' +
+        'ON CONFLICT(id) DO UPDATE SET ' +
+        'name=excluded.name, public_key=excluded.public_key, credential_id=excluded.credential_id, counter=excluded.counter, ' +
+        'type=excluded.type, aa_guid=excluded.aa_guid, transports=excluded.transports, encrypted_user_key=excluded.encrypted_user_key, ' +
+        'encrypted_public_key=excluded.encrypted_public_key, encrypted_private_key=excluded.encrypted_private_key, supports_prf=excluded.supports_prf, updated_at=excluded.updated_at'
+    ),
+    credential.id,
+    credential.userId,
+    credential.name,
+    credential.publicKey,
+    credential.credentialId,
+    credential.counter,
+    credential.type,
+    credential.aaGuid,
+    credential.transports ? JSON.stringify(credential.transports) : null,
+    credential.encryptedUserKey,
+    credential.encryptedPublicKey,
+    credential.encryptedPrivateKey,
+    credential.supportsPrf ? 1 : 0,
+    credential.createdAt,
+    credential.updatedAt
+  ).run();
+}
+
+export async function listAccountPasskeyCredentialsByUserId(
+  db: D1Database,
+  userId: string
+): Promise<AccountPasskeyCredential[]> {
+  await ensureAccountPasskeySchema(db);
+  const rows = await db
+    .prepare('SELECT * FROM webauthn_credentials WHERE user_id = ? ORDER BY created_at ASC')
+    .bind(userId)
+    .all<any>();
+  return (rows.results || []).map(mapCredentialRow);
+}
+
+export async function getAccountPasskeyCredentialById(
+  db: D1Database,
+  userId: string,
+  id: string
+): Promise<AccountPasskeyCredential | null> {
+  await ensureAccountPasskeySchema(db);
+  const row = await db
+    .prepare('SELECT * FROM webauthn_credentials WHERE user_id = ? AND id = ? LIMIT 1')
+    .bind(userId, id)
+    .first<any>();
+  return row ? mapCredentialRow(row) : null;
+}
+
+export async function getAccountPasskeyCredentialByCredentialId(
+  db: D1Database,
+  credentialId: string
+): Promise<AccountPasskeyCredential | null> {
+  await ensureAccountPasskeySchema(db);
+  const row = await db
+    .prepare('SELECT * FROM webauthn_credentials WHERE credential_id = ? LIMIT 1')
+    .bind(credentialId)
+    .first<any>();
+  return row ? mapCredentialRow(row) : null;
+}
+
+export async function countAccountPasskeyCredentialsByUserId(
+  db: D1Database,
+  userId: string
+): Promise<number> {
+  await ensureAccountPasskeySchema(db);
+  const row = await db
+    .prepare('SELECT COUNT(*) AS count FROM webauthn_credentials WHERE user_id = ?')
+    .bind(userId)
+    .first<{ count: number }>();
+  return Number(row?.count || 0);
+}
+
+export async function updateAccountPasskeyCounter(
+  db: D1Database,
+  userId: string,
+  credentialId: string,
+  counter: number,
+  updatedAt: string
+): Promise<void> {
+  await ensureAccountPasskeySchema(db);
+  await db
+    .prepare('UPDATE webauthn_credentials SET counter = ?, updated_at = ? WHERE user_id = ? AND credential_id = ?')
+    .bind(counter, updatedAt, userId, credentialId)
+    .run();
+}
+
+export async function updateAccountPasskeyEncryption(
+  db: D1Database,
+  userId: string,
+  credentialId: string,
+  encryptedUserKey: string,
+  encryptedPublicKey: string,
+  encryptedPrivateKey: string,
+  updatedAt: string
+): Promise<boolean> {
+  await ensureAccountPasskeySchema(db);
+  const result = await db
+    .prepare(
+      'UPDATE webauthn_credentials SET encrypted_user_key = ?, encrypted_public_key = ?, encrypted_private_key = ?, supports_prf = 1, updated_at = ? ' +
+        'WHERE user_id = ? AND credential_id = ?'
+    )
+    .bind(encryptedUserKey, encryptedPublicKey, encryptedPrivateKey, updatedAt, userId, credentialId)
+    .run();
+  return Number(result.meta.changes || 0) > 0;
+}
+
+export async function deleteAccountPasskeyCredential(
+  db: D1Database,
+  userId: string,
+  id: string
+): Promise<boolean> {
+  await ensureAccountPasskeySchema(db);
+  const result = await db
+    .prepare('DELETE FROM webauthn_credentials WHERE user_id = ? AND id = ?')
+    .bind(userId, id)
+    .run();
+  return Number(result.meta.changes || 0) > 0;
+}
+
+export async function saveAccountPasskeyChallenge(
+  db: D1Database,
+  challenge: AccountPasskeyChallenge
+): Promise<void> {
+  await ensureAccountPasskeySchema(db);
+  await db.prepare('DELETE FROM webauthn_challenges WHERE expires_at < ? OR used_at IS NOT NULL').bind(Date.now()).run();
+  await db
+    .prepare(
+      'INSERT INTO webauthn_challenges(challenge_hash, scope, user_id, expires_at, used_at, created_at) VALUES(?, ?, ?, ?, ?, ?) ' +
+        'ON CONFLICT(challenge_hash) DO UPDATE SET scope=excluded.scope, user_id=excluded.user_id, expires_at=excluded.expires_at, used_at=excluded.used_at, created_at=excluded.created_at'
+    )
+    .bind(
+      challenge.challengeHash,
+      challenge.scope,
+      challenge.userId,
+      challenge.expiresAt,
+      challenge.usedAt,
+      challenge.createdAt
+    )
+    .run();
+}
+
+export async function consumeAccountPasskeyChallenge(
+  db: D1Database,
+  challengeHash: string,
+  scope: AccountPasskeyChallengeScope,
+  userId: string | null,
+  nowMs: number
+): Promise<AccountPasskeyChallenge | null> {
+  await ensureAccountPasskeySchema(db);
+  const row = await db
+    .prepare('SELECT * FROM webauthn_challenges WHERE challenge_hash = ? AND scope = ? LIMIT 1')
+    .bind(challengeHash, scope)
+    .first<any>();
+  if (!row) return null;
+  const challenge = mapChallengeRow(row);
+  if (challenge.usedAt != null || challenge.expiresAt < nowMs) return null;
+  if (userId !== null && challenge.userId !== userId) return null;
+  if (userId === null && challenge.userId !== null) return null;
+
+  const result = await db
+    .prepare('UPDATE webauthn_challenges SET used_at = ? WHERE challenge_hash = ? AND used_at IS NULL')
+    .bind(nowMs, challengeHash)
+    .run();
+  if (Number(result.meta.changes || 0) <= 0) return null;
+  return { ...challenge, usedAt: nowMs };
+}

src/services/storage-admin-repo.ts

@@ -0,0 +1,203 @@
+import type { AuditLog, Invite } from '../types';
+
+export interface AuditLogListOptions {
+  limit: number;
+  offset: number;
+  category?: string | null;
+  level?: string | null;
+  q?: string | null;
+  from?: string | null;
+  to?: string | null;
+}
+
+export interface AuditLogListResult {
+  logs: AuditLog[];
+  total: number;
+  hasMore: boolean;
+}
+
+function auditLogFromRow(row: any): AuditLog {
+  return {
+    id: row.id,
+    actorUserId: row.actor_user_id ?? null,
+    actorEmail: row.actor_email ?? null,
+    action: row.action,
+    category: row.category || 'system',
+    level: row.level || 'info',
+    targetType: row.target_type ?? null,
+    targetId: row.target_id ?? null,
+    targetUserEmail: row.target_user_email ?? null,
+    metadata: row.metadata ?? null,
+    createdAt: row.created_at,
+  };
+}
+
+function buildAuditWhere(options: AuditLogListOptions): { where: string; params: unknown[] } {
+  const conditions: string[] = [];
+  const params: unknown[] = [];
+
+  if (options.from) {
+    conditions.push('l.created_at >= ?');
+    params.push(options.from);
+  }
+  if (options.to) {
+    conditions.push('l.created_at <= ?');
+    params.push(options.to);
+  }
+  if (options.category) {
+    conditions.push('l.category = ?');
+    params.push(options.category);
+  }
+  if (options.level) {
+    conditions.push('l.level = ?');
+    params.push(options.level);
+  }
+  if (options.q) {
+    const q = options.q.toLowerCase().slice(0, 48);
+    const like = `%${q}%`;
+    conditions.push(
+      '(LOWER(l.action) LIKE ? OR LOWER(COALESCE(l.actor_user_id, \'\')) LIKE ? OR LOWER(COALESCE(l.target_type, \'\')) LIKE ? OR LOWER(COALESCE(l.target_id, \'\')) LIKE ? OR LOWER(COALESCE(actor.email, \'\')) LIKE ? OR LOWER(COALESCE(target.email, \'\')) LIKE ?)'
+    );
+    params.push(like, like, like, like, like, like);
+  }
+
+  return {
+    where: conditions.length ? `WHERE ${conditions.join(' AND ')}` : '',
+    params,
+  };
+}
+
+export async function createInvite(db: D1Database, invite: Invite): Promise<void> {
+  await db
+    .prepare(
+      'INSERT INTO invites(code, created_by, used_by, expires_at, status, created_at, updated_at) VALUES(?, ?, ?, ?, ?, ?, ?)'
+    )
+    .bind(invite.code, invite.createdBy, invite.usedBy, invite.expiresAt, invite.status, invite.createdAt, invite.updatedAt)
+    .run();
+}
+
+export async function getInvite(db: D1Database, code: string): Promise<Invite | null> {
+  const row = await db
+    .prepare('SELECT code, created_by, used_by, expires_at, status, created_at, updated_at FROM invites WHERE code = ?')
+    .bind(code)
+    .first<any>();
+  if (!row) return null;
+  return {
+    code: row.code,
+    createdBy: row.created_by,
+    usedBy: row.used_by ?? null,
+    expiresAt: row.expires_at,
+    status: row.status,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  };
+}
+
+export async function listInvites(db: D1Database, includeInactive: boolean = false): Promise<Invite[]> {
+  const now = new Date().toISOString();
+  const predicate = includeInactive
+    ? '1 = 1'
+    : "(status = 'active' AND expires_at > ?)";
+  const query =
+    'SELECT code, created_by, used_by, expires_at, status, created_at, updated_at FROM invites ' +
+    `WHERE ${predicate} ORDER BY created_at DESC`;
+  const res = includeInactive
+    ? await db.prepare(query).all<any>()
+    : await db.prepare(query).bind(now).all<any>();
+
+  return (res.results || []).map((row) => ({
+    code: row.code,
+    createdBy: row.created_by,
+    usedBy: row.used_by ?? null,
+    expiresAt: row.expires_at,
+    status: row.status,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  }));
+}
+
+export async function markInviteUsed(db: D1Database, code: string, userId: string): Promise<boolean> {
+  const now = new Date().toISOString();
+  const result = await db
+    .prepare(
+      "UPDATE invites SET status = 'used', used_by = ?, updated_at = ? WHERE code = ? AND status = 'active' AND expires_at > ?"
+    )
+    .bind(userId, now, code, now)
+    .run();
+  return (result.meta.changes ?? 0) > 0;
+}
+
+export async function revokeInvite(db: D1Database, code: string): Promise<boolean> {
+  const now = new Date().toISOString();
+  const result = await db
+    .prepare("UPDATE invites SET status = 'revoked', updated_at = ? WHERE code = ? AND status = 'active'")
+    .bind(now, code)
+    .run();
+  return (result.meta.changes ?? 0) > 0;
+}
+
+export async function deleteAllInvites(db: D1Database): Promise<number> {
+  const result = await db.prepare('DELETE FROM invites').run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function createAuditLog(db: D1Database, log: AuditLog): Promise<void> {
+  await db
+    .prepare(
+      'INSERT INTO audit_logs(id, actor_user_id, action, category, level, target_type, target_id, metadata, created_at) VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)'
+    )
+    .bind(log.id, log.actorUserId, log.action, log.category, log.level, log.targetType, log.targetId, log.metadata, log.createdAt)
+    .run();
+}
+
+export async function pruneAuditLogs(db: D1Database, beforeIso: string): Promise<number> {
+  const result = await db
+    .prepare('DELETE FROM audit_logs WHERE created_at < ?')
+    .bind(beforeIso)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function pruneAuditLogsToMax(db: D1Database, maxEntries: number): Promise<number> {
+  const limit = Math.max(1, Math.floor(maxEntries));
+  const result = await db
+    .prepare(
+      'DELETE FROM audit_logs WHERE id IN (' +
+        'SELECT id FROM audit_logs ORDER BY created_at DESC LIMIT -1 OFFSET ?' +
+      ')'
+    )
+    .bind(limit)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function clearAuditLogs(db: D1Database): Promise<number> {
+  const result = await db.prepare('DELETE FROM audit_logs').run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function listAuditLogs(db: D1Database, options: AuditLogListOptions): Promise<AuditLogListResult> {
+  const limit = Math.max(1, Math.min(200, Math.floor(options.limit || 50)));
+  const offset = Math.max(0, Math.floor(options.offset || 0));
+  const { where, params } = buildAuditWhere(options);
+
+  const rows = await db
+    .prepare(
+      'SELECT l.id, l.actor_user_id, actor.email AS actor_email, l.action, l.category, l.level, l.target_type, l.target_id, target.email AS target_user_email, l.metadata, l.created_at ' +
+        'FROM audit_logs l ' +
+        'LEFT JOIN users actor ON actor.id = l.actor_user_id ' +
+        "LEFT JOIN users target ON l.target_type = 'user' AND target.id = l.target_id " +
+        `${where} ORDER BY l.created_at DESC LIMIT ? OFFSET ?`
+    )
+    .bind(...params, limit + 1, offset)
+    .all<any>();
+  const results = rows.results || [];
+  const logs = results.slice(0, limit).map(auditLogFromRow);
+  const hasMore = results.length > limit;
+
+  return {
+    logs,
+    total: offset + logs.length + (hasMore ? 1 : 0),
+    hasMore,
+  };
+}

src/services/storage-attachment-repo.ts

@@ -0,0 +1,154 @@
+import type { Attachment, Cipher } from '../types';
+
+type SafeBind = (stmt: D1PreparedStatement, ...values: any[]) => D1PreparedStatement;
+type SqlChunkSize = (fixedBindCount: number) => number;
+type GetCipher = (id: string) => Promise<Cipher | null>;
+type SaveCipher = (cipher: Cipher) => Promise<void>;
+type UpdateRevisionDate = (userId: string) => Promise<string>;
+
+export async function getAttachment(db: D1Database, id: string): Promise<Attachment | null> {
+  const row = await db
+    .prepare('SELECT id, cipher_id, file_name, size, size_name, key FROM attachments WHERE id = ?')
+    .bind(id)
+    .first<any>();
+  if (!row) return null;
+  return {
+    id: row.id,
+    cipherId: row.cipher_id,
+    fileName: row.file_name,
+    size: row.size,
+    sizeName: row.size_name,
+    key: row.key,
+  };
+}
+
+export async function saveAttachment(db: D1Database, safeBind: SafeBind, attachment: Attachment): Promise<void> {
+  const stmt = db.prepare(
+    'INSERT INTO attachments(id, cipher_id, file_name, size, size_name, key) VALUES(?, ?, ?, ?, ?, ?) ' +
+    'ON CONFLICT(id) DO UPDATE SET cipher_id=excluded.cipher_id, file_name=excluded.file_name, size=excluded.size, size_name=excluded.size_name, key=excluded.key'
+  );
+  await safeBind(stmt, attachment.id, attachment.cipherId, attachment.fileName, attachment.size, attachment.sizeName, attachment.key).run();
+}
+
+export async function deleteAttachment(db: D1Database, id: string): Promise<void> {
+  await db.prepare('DELETE FROM attachments WHERE id = ?').bind(id).run();
+}
+
+export async function bulkDeleteAttachmentsByIds(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  attachmentIds: string[]
+): Promise<void> {
+  const uniqueIds = [...new Set(attachmentIds.map((id) => String(id || '').trim()).filter(Boolean))];
+  if (!uniqueIds.length) return;
+  const chunkSize = sqlChunkSize(0);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db.prepare(`DELETE FROM attachments WHERE id IN (${placeholders})`).bind(...chunk).run();
+  }
+}
+
+export async function getAttachmentsByCipher(db: D1Database, cipherId: string): Promise<Attachment[]> {
+  const res = await db
+    .prepare('SELECT id, cipher_id, file_name, size, size_name, key FROM attachments WHERE cipher_id = ?')
+    .bind(cipherId)
+    .all<any>();
+  return (res.results || []).map((r) => ({
+    id: r.id,
+    cipherId: r.cipher_id,
+    fileName: r.file_name,
+    size: r.size,
+    sizeName: r.size_name,
+    key: r.key,
+  }));
+}
+
+export async function getAttachmentsByCipherIds(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  cipherIds: string[]
+): Promise<Map<string, Attachment[]>> {
+  const grouped = new Map<string, Attachment[]>();
+  if (cipherIds.length === 0) return grouped;
+
+  const uniqueCipherIds = [...new Set(cipherIds)];
+  const chunkSize = sqlChunkSize(0);
+
+  for (let i = 0; i < uniqueCipherIds.length; i += chunkSize) {
+    const chunk = uniqueCipherIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    const res = await db
+      .prepare(`SELECT id, cipher_id, file_name, size, size_name, key FROM attachments WHERE cipher_id IN (${placeholders})`)
+      .bind(...chunk)
+      .all<any>();
+
+    for (const row of res.results || []) {
+      const item: Attachment = {
+        id: row.id,
+        cipherId: row.cipher_id,
+        fileName: row.file_name,
+        size: row.size,
+        sizeName: row.size_name,
+        key: row.key,
+      };
+      const list = grouped.get(item.cipherId);
+      if (list) list.push(item);
+      else grouped.set(item.cipherId, [item]);
+    }
+  }
+
+  return grouped;
+}
+
+export async function getAttachmentsByUserId(db: D1Database, userId: string): Promise<Map<string, Attachment[]>> {
+  const grouped = new Map<string, Attachment[]>();
+  const res = await db
+    .prepare(
+      `SELECT a.id, a.cipher_id, a.file_name, a.size, a.size_name, a.key
+       FROM attachments a
+       INNER JOIN ciphers c ON c.id = a.cipher_id
+       WHERE c.user_id = ?`
+    )
+    .bind(userId)
+    .all<any>();
+
+  for (const row of res.results || []) {
+    const item: Attachment = {
+      id: row.id,
+      cipherId: row.cipher_id,
+      fileName: row.file_name,
+      size: row.size,
+      sizeName: row.size_name,
+      key: row.key,
+    };
+    const list = grouped.get(item.cipherId);
+    if (list) list.push(item);
+    else grouped.set(item.cipherId, [item]);
+  }
+
+  return grouped;
+}
+
+export async function addAttachmentToCipher(db: D1Database, cipherId: string, attachmentId: string): Promise<void> {
+  await db.prepare('UPDATE attachments SET cipher_id = ? WHERE id = ?').bind(cipherId, attachmentId).run();
+}
+
+export async function deleteAllAttachmentsByCipher(db: D1Database, cipherId: string): Promise<void> {
+  await db.prepare('DELETE FROM attachments WHERE cipher_id = ?').bind(cipherId).run();
+}
+
+export async function updateCipherRevisionDate(
+  getCipherById: GetCipher,
+  saveCipherRecord: SaveCipher,
+  updateRevisionDate: UpdateRevisionDate,
+  cipherId: string
+): Promise<{ userId: string; revisionDate: string } | null> {
+  const cipher = await getCipherById(cipherId);
+  if (!cipher) return null;
+  cipher.updatedAt = new Date().toISOString();
+  await saveCipherRecord(cipher);
+  const revisionDate = await updateRevisionDate(cipher.userId);
+  return { userId: cipher.userId, revisionDate };
+}

src/services/storage-attachment-token-repo.ts

@@ -0,0 +1,46 @@
+type ShouldRunPeriodicCleanup = (lastRunAt: number, intervalMs: number) => boolean;
+
+export async function ensureUsedAttachmentDownloadTokenTable(db: D1Database): Promise<void> {
+  await db
+    .prepare(
+      'CREATE TABLE IF NOT EXISTS used_attachment_download_tokens (' +
+        'jti TEXT PRIMARY KEY, ' +
+        'expires_at INTEGER NOT NULL' +
+        ')'
+    )
+    .run();
+}
+
+export async function consumeAttachmentDownloadToken(
+  db: D1Database,
+  shouldRunPeriodicCleanup: ShouldRunPeriodicCleanup,
+  lastCleanupAt: number,
+  cleanupIntervalMs: number,
+  jti: string,
+  expUnixSeconds: number
+): Promise<{ consumed: boolean; cleanedUpAt: number | null }> {
+  const nowMs = Date.now();
+  let cleanedUpAt: number | null = null;
+
+  if (shouldRunPeriodicCleanup(lastCleanupAt, cleanupIntervalMs)) {
+    await db
+      .prepare('DELETE FROM used_attachment_download_tokens WHERE expires_at < ?')
+      .bind(nowMs)
+      .run();
+    cleanedUpAt = nowMs;
+  }
+
+  const expiresAtMs = expUnixSeconds * 1000;
+  const result = await db
+    .prepare(
+      'INSERT INTO used_attachment_download_tokens(jti, expires_at) VALUES(?, ?) ' +
+        'ON CONFLICT(jti) DO NOTHING'
+    )
+    .bind(jti, expiresAtMs)
+    .run();
+
+  return {
+    consumed: (result.meta.changes ?? 0) > 0,
+    cleanedUpAt,
+  };
+}

src/services/storage-cipher-repo.ts

@@ -0,0 +1,382 @@
+import type { Cipher } from '../types';
+
+function normalizeOptionalId(value: unknown): string | null {
+  if (value == null) return null;
+  const normalized = String(value).trim();
+  return normalized ? normalized : null;
+}
+
+type SafeBind = (stmt: D1PreparedStatement, ...values: any[]) => D1PreparedStatement;
+type SqlChunkSize = (fixedBindCount: number) => number;
+type UpdateRevisionDate = (userId: string) => Promise<string>;
+
+interface CipherRow {
+  id: string;
+  user_id: string;
+  type: number | null;
+  folder_id: string | null;
+  name: string | null;
+  notes: string | null;
+  favorite: number | null;
+  data: string;
+  reprompt: number | null;
+  key: string | null;
+  created_at: string;
+  updated_at: string;
+  archived_at: string | null;
+  deleted_at: string | null;
+}
+
+const CIPHER_SCALAR_DATA_KEYS = new Set([
+  'id',
+  'userId',
+  'user_id',
+  'type',
+  'folderId',
+  'folder_id',
+  'name',
+  'notes',
+  'favorite',
+  'reprompt',
+  'key',
+  'attachments',
+  'Attachments',
+  'attachments2',
+  'Attachments2',
+  'createdAt',
+  'created_at',
+  'creationDate',
+  'updatedAt',
+  'updated_at',
+  'revisionDate',
+  'archivedAt',
+  'archived_at',
+  'archivedDate',
+  'deletedAt',
+  'deleted_at',
+  'deletedDate',
+]);
+
+function buildCipherData(cipher: Cipher, folderId: string | null): string {
+  const payload: Record<string, unknown> = {
+    ...cipher,
+    folderId,
+  };
+  for (const key of CIPHER_SCALAR_DATA_KEYS) {
+    delete payload[key];
+  }
+  return JSON.stringify(payload);
+}
+
+function parseCipherRow(row: CipherRow | null | undefined): Cipher | null {
+  if (!row?.data) return null;
+  try {
+    const parsed = JSON.parse(row.data) as Cipher;
+    const folderId = normalizeOptionalId(row.folder_id ?? parsed.folderId ?? null);
+    return {
+      ...parsed,
+      id: row.id,
+      userId: row.user_id,
+      type: Number(row.type) || Number(parsed.type) || 1,
+      folderId,
+      name: row.name ?? parsed.name ?? null,
+      notes: row.notes ?? parsed.notes ?? null,
+      favorite: row.favorite != null ? !!row.favorite : !!parsed.favorite,
+      reprompt: row.reprompt ?? parsed.reprompt ?? 0,
+      key: row.key ?? parsed.key ?? null,
+      createdAt: row.created_at,
+      updatedAt: row.updated_at,
+      archivedAt: row.archived_at ?? parsed.archivedAt ?? parsed.archivedDate ?? null,
+      deletedAt: row.deleted_at ?? null,
+    };
+  } catch {
+    console.error('Corrupted cipher data, id:', row.id);
+    return null;
+  }
+}
+
+function selectCipherColumns(): string {
+  return 'id, user_id, type, folder_id, name, notes, favorite, data, reprompt, key, created_at, updated_at, archived_at, deleted_at';
+}
+
+export async function getCipher(db: D1Database, id: string): Promise<Cipher | null> {
+  const row = await db
+    .prepare(`SELECT ${selectCipherColumns()} FROM ciphers WHERE id = ?`)
+    .bind(id)
+    .first<CipherRow>();
+  return parseCipherRow(row);
+}
+
+export async function saveCipher(db: D1Database, safeBind: SafeBind, cipher: Cipher): Promise<void> {
+  const folderId = normalizeOptionalId(cipher.folderId);
+  const data = buildCipherData(cipher, folderId);
+  const stmt = db.prepare(
+    'INSERT INTO ciphers(id, user_id, type, folder_id, name, notes, favorite, data, reprompt, key, created_at, updated_at, archived_at, deleted_at) ' +
+    'VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ' +
+    'ON CONFLICT(id) DO UPDATE SET ' +
+    'user_id=excluded.user_id, type=excluded.type, folder_id=excluded.folder_id, name=excluded.name, notes=excluded.notes, favorite=excluded.favorite, data=excluded.data, reprompt=excluded.reprompt, key=excluded.key, updated_at=excluded.updated_at, archived_at=excluded.archived_at, deleted_at=excluded.deleted_at'
+  );
+  await safeBind(
+    stmt,
+    cipher.id,
+    cipher.userId,
+    Number(cipher.type) || 1,
+    folderId,
+    cipher.name,
+    cipher.notes,
+    cipher.favorite ? 1 : 0,
+    data,
+    cipher.reprompt ?? 0,
+    cipher.key,
+    cipher.createdAt,
+    cipher.updatedAt,
+    cipher.archivedAt ?? null,
+    cipher.deletedAt
+  ).run();
+}
+
+function sanitizeIds(ids: string[]): string[] {
+  return Array.from(new Set(ids.map((id) => String(id || '').trim()).filter(Boolean)));
+}
+
+export async function deleteCipher(db: D1Database, id: string, userId: string): Promise<void> {
+  await db.prepare('DELETE FROM ciphers WHERE id = ? AND user_id = ?').bind(id, userId).run();
+}
+
+export async function bulkSoftDeleteCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return null;
+
+  const now = new Date().toISOString();
+  const chunkSize = sqlChunkSize(3);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET deleted_at = ?, updated_at = ?,
+             data = json_remove(data, '$.deletedAt', '$.deletedDate', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND id IN (${placeholders})`
+      )
+      .bind(now, now, userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function bulkRestoreCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return null;
+
+  const now = new Date().toISOString();
+  const chunkSize = sqlChunkSize(2);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET deleted_at = NULL, updated_at = ?,
+             data = json_remove(data, '$.deletedAt', '$.deletedDate', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND id IN (${placeholders})`
+      )
+      .bind(now, userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function bulkDeleteCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return null;
+
+  const chunkSize = sqlChunkSize(1);
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db.prepare(`DELETE FROM ciphers WHERE user_id = ? AND id IN (${placeholders})`).bind(userId, ...chunk).run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function getAllCiphers(db: D1Database, userId: string): Promise<Cipher[]> {
+  const res = await db
+    .prepare(`SELECT ${selectCipherColumns()} FROM ciphers WHERE user_id = ? ORDER BY updated_at DESC`)
+    .bind(userId)
+    .all<CipherRow>();
+  return (res.results || []).flatMap((row) => {
+    const cipher = parseCipherRow(row);
+    return cipher ? [cipher] : [];
+  });
+}
+
+export async function getCiphersPage(
+  db: D1Database,
+  userId: string,
+  includeDeleted: boolean,
+  limit: number,
+  offset: number
+): Promise<Cipher[]> {
+  const whereDeleted = includeDeleted ? '' : 'AND deleted_at IS NULL';
+  const res = await db
+    .prepare(
+      `SELECT ${selectCipherColumns()} FROM ciphers
+       WHERE user_id = ?
+       ${whereDeleted}
+       ORDER BY updated_at DESC
+       LIMIT ? OFFSET ?`
+    )
+    .bind(userId, limit, offset)
+    .all<CipherRow>();
+  return (res.results || []).flatMap((row) => {
+    const cipher = parseCipherRow(row);
+    return cipher ? [cipher] : [];
+  });
+}
+
+export async function getCiphersByIds(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  ids: string[],
+  userId: string
+): Promise<Cipher[]> {
+  if (ids.length === 0) return [];
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return [];
+
+  const chunkSize = sqlChunkSize(1);
+  const out: Cipher[] = [];
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    const stmt = db.prepare(`SELECT ${selectCipherColumns()} FROM ciphers WHERE user_id = ? AND id IN (${placeholders})`);
+    const res = await stmt.bind(userId, ...chunk).all<CipherRow>();
+    out.push(
+      ...(res.results || []).flatMap((row) => {
+        const cipher = parseCipherRow(row);
+        return cipher ? [cipher] : [];
+      })
+    );
+  }
+  return out;
+}
+
+export async function bulkMoveCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  folderId: string | null,
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const now = new Date().toISOString();
+  const normalizedFolderId = normalizeOptionalId(folderId);
+  const uniqueIds = sanitizeIds(ids);
+  const chunkSize = sqlChunkSize(3);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET folder_id = ?, updated_at = ?,
+             data = json_remove(data, '$.folderId', '$.folder_id', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND id IN (${placeholders})`
+      )
+      .bind(normalizedFolderId, now, userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function bulkArchiveCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return null;
+
+  const now = new Date().toISOString();
+  const chunkSize = sqlChunkSize(3);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET archived_at = ?, updated_at = ?,
+             data = json_remove(data, '$.archivedAt', '$.archivedDate', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND id IN (${placeholders}) AND deleted_at IS NULL`
+      )
+      .bind(now, now, userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function bulkUnarchiveCiphers(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = sanitizeIds(ids);
+  if (!uniqueIds.length) return null;
+
+  const now = new Date().toISOString();
+  const chunkSize = sqlChunkSize(2);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET archived_at = NULL, updated_at = ?,
+             data = json_remove(data, '$.archivedAt', '$.archivedDate', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND id IN (${placeholders})`
+      )
+      .bind(now, userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}

src/services/storage-config-repo.ts

@@ -0,0 +1,22 @@
+export async function isRegistered(db: D1Database): Promise<boolean> {
+  const row = await db.prepare('SELECT value FROM config WHERE key = ?').bind('registered').first<{ value: string }>();
+  return row?.value === 'true';
+}
+
+export async function getConfigValue(db: D1Database, key: string): Promise<string | null> {
+  const row = await db.prepare('SELECT value FROM config WHERE key = ?').bind(key).first<{ value: string }>();
+  return typeof row?.value === 'string' ? row.value : null;
+}
+
+export async function setConfigValue(db: D1Database, key: string, value: string): Promise<void> {
+  await db
+    .prepare('INSERT INTO config(key, value) VALUES(?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value')
+    .bind(key, value)
+    .run();
+}
+
+export async function setRegistered(db: D1Database): Promise<void> {
+  await db.prepare('INSERT INTO config(key, value) VALUES(?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value')
+    .bind('registered', 'true')
+    .run();
+}

src/services/storage-device-repo.ts

@@ -0,0 +1,289 @@
+import type { Device, TrustedDeviceTokenSummary, User } from '../types';
+
+type GetUserByEmail = (email: string) => Promise<User | null>;
+type TrustedTokenKeyFn = (token: string) => Promise<string>;
+
+function mapDeviceRow(row: any): Device {
+  return {
+    userId: row.user_id,
+    deviceIdentifier: row.device_identifier,
+    name: row.name,
+    deviceNote: row.device_note ?? null,
+    type: row.type,
+    sessionStamp: row.session_stamp || '',
+    encryptedUserKey: row.encrypted_user_key ?? null,
+    encryptedPublicKey: row.encrypted_public_key ?? null,
+    encryptedPrivateKey: row.encrypted_private_key ?? null,
+    lastSeenAt: row.last_seen_at ?? null,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  };
+}
+
+export async function upsertDevice(
+  db: D1Database,
+  getDeviceById: (userId: string, deviceIdentifier: string) => Promise<Device | null>,
+  userId: string,
+  deviceIdentifier: string,
+  name: string,
+  type: number,
+  sessionStamp?: string,
+  keys?: {
+    encryptedUserKey?: string | null;
+    encryptedPublicKey?: string | null;
+    encryptedPrivateKey?: string | null;
+  }
+): Promise<void> {
+  const now = new Date().toISOString();
+  const existingDevice = await getDeviceById(userId, deviceIdentifier);
+  const effectiveSessionStamp = String(sessionStamp || '').trim() || existingDevice?.sessionStamp || '';
+  const effectiveName = String(name || '').trim() || String(existingDevice?.name || '').trim();
+  await db
+    .prepare(
+      'INSERT INTO devices(user_id, device_identifier, name, type, session_stamp, encrypted_user_key, encrypted_public_key, encrypted_private_key, banned, banned_at, device_note, last_seen_at, created_at, updated_at) VALUES(?, ?, ?, ?, ?, ?, ?, ?, 0, NULL, ?, ?, ?, ?) ' +
+        'ON CONFLICT(user_id, device_identifier) DO UPDATE SET name=excluded.name, type=excluded.type, session_stamp=excluded.session_stamp, ' +
+        'encrypted_user_key=COALESCE(excluded.encrypted_user_key, encrypted_user_key), ' +
+        'encrypted_public_key=COALESCE(excluded.encrypted_public_key, encrypted_public_key), ' +
+        'encrypted_private_key=COALESCE(excluded.encrypted_private_key, encrypted_private_key), ' +
+        'last_seen_at=excluded.last_seen_at, ' +
+        'updated_at=excluded.updated_at'
+    )
+    .bind(
+      userId,
+      deviceIdentifier,
+      effectiveName,
+      type,
+      effectiveSessionStamp,
+      keys?.encryptedUserKey ?? null,
+      keys?.encryptedPublicKey ?? null,
+      keys?.encryptedPrivateKey ?? null,
+      existingDevice?.deviceNote ?? null,
+      now,
+      now,
+      now
+    )
+    .run();
+}
+
+export async function updateDeviceName(
+  db: D1Database,
+  userId: string,
+  deviceIdentifier: string,
+  name: string
+): Promise<boolean> {
+  const result = await db
+    .prepare('UPDATE devices SET device_note = ? WHERE user_id = ? AND device_identifier = ?')
+    .bind(String(name || '').trim(), userId, deviceIdentifier)
+    .run();
+  return Number(result.meta.changes ?? 0) > 0;
+}
+
+export async function touchDeviceLastSeen(
+  db: D1Database,
+  userId: string,
+  deviceIdentifier: string
+): Promise<boolean> {
+  const now = new Date().toISOString();
+  const result = await db
+    .prepare('UPDATE devices SET last_seen_at = ? WHERE user_id = ? AND device_identifier = ?')
+    .bind(now, userId, deviceIdentifier)
+    .run();
+  return Number(result.meta.changes ?? 0) > 0;
+}
+
+export async function updateDeviceKeys(
+  db: D1Database,
+  userId: string,
+  deviceIdentifier: string,
+  keys: {
+    encryptedUserKey?: string | null;
+    encryptedPublicKey?: string | null;
+    encryptedPrivateKey?: string | null;
+  }
+): Promise<boolean> {
+  const now = new Date().toISOString();
+  const result = await db
+    .prepare(
+      'UPDATE devices SET encrypted_user_key = ?, encrypted_public_key = ?, encrypted_private_key = ?, updated_at = ? ' +
+        'WHERE user_id = ? AND device_identifier = ?'
+    )
+    .bind(
+      keys.encryptedUserKey ?? null,
+      keys.encryptedPublicKey ?? null,
+      keys.encryptedPrivateKey ?? null,
+      now,
+      userId,
+      deviceIdentifier
+    )
+    .run();
+  return Number(result.meta.changes ?? 0) > 0;
+}
+
+export async function clearDeviceKeys(
+  db: D1Database,
+  userId: string,
+  deviceIdentifiers: string[]
+): Promise<number> {
+  const uniqueIds = Array.from(
+    new Set(deviceIdentifiers.map((id) => String(id || '').trim()).filter(Boolean))
+  );
+  if (!uniqueIds.length) return 0;
+
+  const placeholders = uniqueIds.map(() => '?').join(',');
+  const result = await db
+    .prepare(
+      `UPDATE devices
+       SET encrypted_user_key = NULL,
+           encrypted_public_key = NULL,
+           encrypted_private_key = NULL,
+           updated_at = ?
+       WHERE user_id = ? AND device_identifier IN (${placeholders})`
+    )
+    .bind(new Date().toISOString(), userId, ...uniqueIds)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function isKnownDevice(db: D1Database, userId: string, deviceIdentifier: string): Promise<boolean> {
+  const row = await db
+    .prepare('SELECT 1 FROM devices WHERE user_id = ? AND device_identifier = ? LIMIT 1')
+    .bind(userId, deviceIdentifier)
+    .first<{ '1': number }>();
+  return !!row;
+}
+
+export async function isKnownDeviceByEmail(
+  getUserByEmail: GetUserByEmail,
+  isKnownDeviceForUser: (userId: string, deviceIdentifier: string) => Promise<boolean>,
+  email: string,
+  deviceIdentifier: string
+): Promise<boolean> {
+  const user = await getUserByEmail(email);
+  if (!user) return false;
+  return isKnownDeviceForUser(user.id, deviceIdentifier);
+}
+
+export async function getDevicesByUserId(db: D1Database, userId: string): Promise<Device[]> {
+  const res = await db
+    .prepare(
+      'SELECT user_id, device_identifier, name, type, session_stamp, encrypted_user_key, encrypted_public_key, encrypted_private_key, banned, banned_at, device_note, last_seen_at, created_at, updated_at ' +
+        'FROM devices WHERE user_id = ? ORDER BY COALESCE(last_seen_at, created_at) DESC, updated_at DESC'
+    )
+    .bind(userId)
+    .all<any>();
+  return (res.results || []).map(mapDeviceRow);
+}
+
+export async function getDevice(db: D1Database, userId: string, deviceIdentifier: string): Promise<Device | null> {
+  const row = await db
+    .prepare(
+      'SELECT user_id, device_identifier, name, type, session_stamp, encrypted_user_key, encrypted_public_key, encrypted_private_key, banned, banned_at, device_note, last_seen_at, created_at, updated_at ' +
+        'FROM devices WHERE user_id = ? AND device_identifier = ? LIMIT 1'
+    )
+    .bind(userId, deviceIdentifier)
+    .first<any>();
+  return row ? mapDeviceRow(row) : null;
+}
+
+export async function deleteDevice(db: D1Database, userId: string, deviceIdentifier: string): Promise<boolean> {
+  const result = await db
+    .prepare('DELETE FROM devices WHERE user_id = ? AND device_identifier = ?')
+    .bind(userId, deviceIdentifier)
+    .run();
+  return Number(result.meta.changes ?? 0) > 0;
+}
+
+export async function deleteDevicesByUserId(db: D1Database, userId: string): Promise<number> {
+  const result = await db.prepare('DELETE FROM devices WHERE user_id = ?').bind(userId).run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function getTrustedDeviceTokenSummariesByUserId(db: D1Database, userId: string): Promise<TrustedDeviceTokenSummary[]> {
+  const now = Date.now();
+  await db.prepare('DELETE FROM trusted_two_factor_device_tokens WHERE expires_at < ?').bind(now).run();
+
+  const res = await db
+    .prepare(
+      'SELECT device_identifier, MAX(expires_at) AS expires_at, COUNT(*) AS token_count ' +
+        'FROM trusted_two_factor_device_tokens WHERE user_id = ? GROUP BY device_identifier ORDER BY expires_at DESC'
+    )
+    .bind(userId)
+    .all<any>();
+
+  return (res.results || []).map((row) => ({
+    deviceIdentifier: row.device_identifier,
+    expiresAt: Number(row.expires_at || 0),
+    tokenCount: Number(row.token_count || 0),
+  }));
+}
+
+export async function deleteTrustedTwoFactorTokensByDevice(db: D1Database, userId: string, deviceIdentifier: string): Promise<number> {
+  const result = await db
+    .prepare('DELETE FROM trusted_two_factor_device_tokens WHERE user_id = ? AND device_identifier = ?')
+    .bind(userId, deviceIdentifier)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function deleteTrustedTwoFactorTokensByUserId(db: D1Database, userId: string): Promise<number> {
+  const result = await db
+    .prepare('DELETE FROM trusted_two_factor_device_tokens WHERE user_id = ?')
+    .bind(userId)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function updateTrustedTwoFactorTokensExpiryByDevice(
+  db: D1Database,
+  userId: string,
+  deviceIdentifier: string,
+  expiresAtMs: number
+): Promise<number> {
+  const now = Date.now();
+  await db.prepare('DELETE FROM trusted_two_factor_device_tokens WHERE expires_at < ?').bind(now).run();
+  const result = await db
+    .prepare('UPDATE trusted_two_factor_device_tokens SET expires_at = ? WHERE user_id = ? AND device_identifier = ? AND expires_at >= ?')
+    .bind(expiresAtMs, userId, deviceIdentifier, now)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function saveTrustedTwoFactorDeviceToken(
+  db: D1Database,
+  trustedTokenKey: TrustedTokenKeyFn,
+  token: string,
+  userId: string,
+  deviceIdentifier: string,
+  expiresAtMs: number
+): Promise<void> {
+  const tokenKey = await trustedTokenKey(token);
+  await db.prepare('DELETE FROM trusted_two_factor_device_tokens WHERE expires_at < ?').bind(Date.now()).run();
+  await db
+    .prepare(
+      'INSERT INTO trusted_two_factor_device_tokens(token, user_id, device_identifier, expires_at) VALUES(?, ?, ?, ?) ' +
+        'ON CONFLICT(token) DO UPDATE SET user_id=excluded.user_id, device_identifier=excluded.device_identifier, expires_at=excluded.expires_at'
+    )
+    .bind(tokenKey, userId, deviceIdentifier, expiresAtMs)
+    .run();
+}
+
+export async function getTrustedTwoFactorDeviceTokenUserId(
+  db: D1Database,
+  trustedTokenKey: TrustedTokenKeyFn,
+  token: string,
+  deviceIdentifier: string
+): Promise<string | null> {
+  const now = Date.now();
+  const tokenKey = await trustedTokenKey(token);
+  const row = await db
+    .prepare('SELECT user_id, expires_at FROM trusted_two_factor_device_tokens WHERE token = ? AND device_identifier = ?')
+    .bind(tokenKey, deviceIdentifier)
+    .first<{ user_id: string; expires_at: number }>();
+
+  if (!row) return null;
+  if (row.expires_at && row.expires_at < now) {
+    await db.prepare('DELETE FROM trusted_two_factor_device_tokens WHERE token = ?').bind(tokenKey).run();
+    return null;
+  }
+  return row.user_id;
+}

src/services/storage-domain-rules-repo.ts

@@ -0,0 +1,73 @@
+import type { UserDomainSettings } from '../types';
+import { normalizeCustomEquivalentDomains, normalizeEquivalentDomains } from './domain-rules';
+
+// Storage adapter for the domain_settings table.
+//
+// CONTRACT:
+// equivalent_domains is kept as the active derived groups for compatibility and
+// fallback reads. custom_equivalent_domains is the full rule list that preserves
+// UI/client state. Save both together through saveUserDomainSettings().
+function parseJsonArray<T>(raw: string | null | undefined, fallback: T[]): T[] {
+  if (!raw) return fallback;
+  try {
+    const parsed = JSON.parse(raw) as unknown;
+    return Array.isArray(parsed) ? parsed as T[] : fallback;
+  } catch {
+    return fallback;
+  }
+}
+
+export async function getUserDomainSettings(db: D1Database, userId: string): Promise<UserDomainSettings> {
+  const row = await db
+    .prepare('SELECT equivalent_domains, custom_equivalent_domains, excluded_global_equivalent_domains, updated_at FROM domain_settings WHERE user_id = ?')
+    .bind(userId)
+    .first<{
+      equivalent_domains: string | null;
+      custom_equivalent_domains: string | null;
+      excluded_global_equivalent_domains: string | null;
+      updated_at: string | null;
+    }>();
+  const equivalentDomains = normalizeEquivalentDomains(parseJsonArray<string[]>(row?.equivalent_domains, []));
+  const storedCustomEquivalentDomains = row?.custom_equivalent_domains
+    ? normalizeCustomEquivalentDomains(parseJsonArray<unknown>(row.custom_equivalent_domains, []))
+    : [];
+  const customEquivalentDomains = storedCustomEquivalentDomains.length
+    ? storedCustomEquivalentDomains
+    : normalizeCustomEquivalentDomains(equivalentDomains);
+
+  return {
+    userId,
+    equivalentDomains,
+    customEquivalentDomains,
+    excludedGlobalEquivalentDomains: parseJsonArray<number>(row?.excluded_global_equivalent_domains, []),
+    updatedAt: row?.updated_at || null,
+  };
+}
+
+export async function saveUserDomainSettings(
+  db: D1Database,
+  userId: string,
+  equivalentDomains: string[][],
+  customEquivalentDomains: UserDomainSettings['customEquivalentDomains'],
+  excludedGlobalEquivalentDomains: number[],
+  updatedAt: string
+): Promise<void> {
+  await db
+    .prepare(
+      'INSERT INTO domain_settings(user_id, equivalent_domains, custom_equivalent_domains, excluded_global_equivalent_domains, updated_at) ' +
+      'VALUES(?, ?, ?, ?, ?) ' +
+      'ON CONFLICT(user_id) DO UPDATE SET ' +
+      'equivalent_domains = excluded.equivalent_domains, ' +
+      'custom_equivalent_domains = excluded.custom_equivalent_domains, ' +
+      'excluded_global_equivalent_domains = excluded.excluded_global_equivalent_domains, ' +
+      'updated_at = excluded.updated_at'
+    )
+    .bind(
+      userId,
+      JSON.stringify(equivalentDomains),
+      JSON.stringify(customEquivalentDomains),
+      JSON.stringify(excludedGlobalEquivalentDomains),
+      updatedAt
+    )
+    .run();
+}

src/services/storage-folder-repo.ts

@@ -0,0 +1,104 @@
+import type { Folder } from '../types';
+
+function mapFolderRow(row: any): Folder {
+  return {
+    id: row.id,
+    userId: row.user_id,
+    name: row.name,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  };
+}
+
+export async function getFolder(db: D1Database, id: string): Promise<Folder | null> {
+  const row = await db
+    .prepare('SELECT id, user_id, name, created_at, updated_at FROM folders WHERE id = ?')
+    .bind(id)
+    .first<any>();
+  if (!row) return null;
+  return mapFolderRow(row);
+}
+
+export async function saveFolder(db: D1Database, folder: Folder): Promise<void> {
+  await db
+    .prepare(
+      'INSERT INTO folders(id, user_id, name, created_at, updated_at) VALUES(?, ?, ?, ?, ?) ' +
+      'ON CONFLICT(id) DO UPDATE SET user_id=excluded.user_id, name=excluded.name, updated_at=excluded.updated_at'
+    )
+    .bind(folder.id, folder.userId, folder.name, folder.createdAt, folder.updatedAt)
+    .run();
+}
+
+export async function deleteFolder(db: D1Database, id: string, userId: string): Promise<void> {
+  await db.prepare('DELETE FROM folders WHERE id = ? AND user_id = ?').bind(id, userId).run();
+}
+
+export async function clearFolderFromCiphers(
+  db: D1Database,
+  userId: string,
+  folderId: string
+): Promise<void> {
+  const now = new Date().toISOString();
+  await db
+    .prepare(
+      `UPDATE ciphers
+       SET folder_id = NULL, updated_at = ?,
+           data = json_remove(data, '$.folderId', '$.folder_id', '$.updatedAt', '$.revisionDate')
+       WHERE user_id = ? AND folder_id = ?`
+    )
+    .bind(now, userId, folderId)
+    .run();
+}
+
+export async function bulkDeleteFolders(
+  db: D1Database,
+  userId: string,
+  ids: string[],
+  sqlChunkSize: (fixedBindCount: number) => number,
+  updateRevisionDate: (userId: string) => Promise<string>
+): Promise<string | null> {
+  const uniqueIds = Array.from(new Set(ids.map((id) => String(id || '').trim()).filter(Boolean)));
+  if (!uniqueIds.length) return null;
+
+  const now = new Date().toISOString();
+  const chunkSize = sqlChunkSize(2);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db
+      .prepare(
+        `UPDATE ciphers
+         SET folder_id = NULL, updated_at = ?,
+             data = json_remove(data, '$.folderId', '$.folder_id', '$.updatedAt', '$.revisionDate')
+         WHERE user_id = ? AND folder_id IN (${placeholders})`
+      )
+      .bind(now, userId, ...chunk)
+      .run();
+
+    await db
+      .prepare(`DELETE FROM folders WHERE user_id = ? AND id IN (${placeholders})`)
+      .bind(userId, ...chunk)
+      .run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function getAllFolders(db: D1Database, userId: string): Promise<Folder[]> {
+  const res = await db
+    .prepare('SELECT id, user_id, name, created_at, updated_at FROM folders WHERE user_id = ? ORDER BY updated_at DESC')
+    .bind(userId)
+    .all<any>();
+  return (res.results || []).map((row) => mapFolderRow(row));
+}
+
+export async function getFoldersPage(db: D1Database, userId: string, limit: number, offset: number): Promise<Folder[]> {
+  const res = await db
+    .prepare(
+      'SELECT id, user_id, name, created_at, updated_at FROM folders WHERE user_id = ? ORDER BY updated_at DESC LIMIT ? OFFSET ?'
+    )
+    .bind(userId, limit, offset)
+    .all<any>();
+  return (res.results || []).map((row) => mapFolderRow(row));
+}

src/services/storage-refresh-token-repo.ts

@@ -0,0 +1,100 @@
+import type { RefreshTokenRecord } from '../types';
+
+type RefreshTokenKeyFn = (token: string) => Promise<string>;
+type CleanupExpiredFn = (nowMs: number) => Promise<void>;
+
+export async function saveRefreshToken(
+  db: D1Database,
+  refreshTokenKey: RefreshTokenKeyFn,
+  maybeCleanupExpiredRefreshTokens: CleanupExpiredFn,
+  token: string,
+  userId: string,
+  expiresAtMs: number,
+  deviceIdentifier?: string | null,
+  deviceSessionStamp?: string | null
+): Promise<void> {
+  await maybeCleanupExpiredRefreshTokens(Date.now());
+  const tokenKey = await refreshTokenKey(token);
+  await db
+    .prepare(
+      'INSERT INTO refresh_tokens(token, user_id, expires_at, device_identifier, device_session_stamp) VALUES(?, ?, ?, ?, ?) ' +
+        'ON CONFLICT(token) DO UPDATE SET user_id=excluded.user_id, expires_at=excluded.expires_at, device_identifier=excluded.device_identifier, device_session_stamp=excluded.device_session_stamp'
+    )
+    .bind(tokenKey, userId, expiresAtMs, deviceIdentifier ?? null, deviceSessionStamp ?? null)
+    .run();
+}
+
+export async function getRefreshTokenRecord(
+  db: D1Database,
+  refreshTokenKey: RefreshTokenKeyFn,
+  maybeCleanupExpiredRefreshTokens: CleanupExpiredFn,
+  deleteRefreshTokenRecord: (token: string) => Promise<void>,
+  token: string
+): Promise<RefreshTokenRecord | null> {
+  const now = Date.now();
+  await maybeCleanupExpiredRefreshTokens(now);
+  const tokenKey = await refreshTokenKey(token);
+
+  const row = await db
+    .prepare('SELECT user_id, expires_at, device_identifier, device_session_stamp FROM refresh_tokens WHERE token = ?')
+    .bind(tokenKey)
+    .first<{ user_id: string; expires_at: number; device_identifier: string | null; device_session_stamp: string | null }>();
+
+  if (!row) return null;
+  if (row.expires_at && row.expires_at < now) {
+    await deleteRefreshTokenRecord(token);
+    return null;
+  }
+  return {
+    userId: row.user_id,
+    expiresAt: row.expires_at,
+    deviceIdentifier: row.device_identifier ?? null,
+    deviceSessionStamp: row.device_session_stamp ?? null,
+  };
+}
+
+export async function deleteRefreshToken(db: D1Database, refreshTokenKey: RefreshTokenKeyFn, token: string): Promise<void> {
+  const tokenKey = await refreshTokenKey(token);
+  await db.prepare('DELETE FROM refresh_tokens WHERE token = ?').bind(token).run();
+  await db.prepare('DELETE FROM refresh_tokens WHERE token = ?').bind(tokenKey).run();
+}
+
+export async function deleteRefreshTokensByUserId(db: D1Database, userId: string): Promise<number> {
+  const result = await db.prepare('DELETE FROM refresh_tokens WHERE user_id = ?').bind(userId).run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function deleteRefreshTokensByDevice(db: D1Database, userId: string, deviceIdentifier: string): Promise<number> {
+  const result = await db
+    .prepare('DELETE FROM refresh_tokens WHERE user_id = ? AND device_identifier = ?')
+    .bind(userId, deviceIdentifier)
+    .run();
+  return Number(result.meta.changes ?? 0);
+}
+
+export async function constrainRefreshTokenExpiry(
+  db: D1Database,
+  refreshTokenKey: RefreshTokenKeyFn,
+  token: string,
+  maxExpiresAtMs: number
+): Promise<void> {
+  const tokenKey = await refreshTokenKey(token);
+
+  await db
+    .prepare(
+      'UPDATE refresh_tokens ' +
+        'SET expires_at = CASE WHEN expires_at > ? THEN ? ELSE expires_at END ' +
+        'WHERE token = ?'
+    )
+    .bind(maxExpiresAtMs, maxExpiresAtMs, tokenKey)
+    .run();
+
+  await db
+    .prepare(
+      'UPDATE refresh_tokens ' +
+        'SET expires_at = CASE WHEN expires_at > ? THEN ? ELSE expires_at END ' +
+        'WHERE token = ?'
+    )
+    .bind(maxExpiresAtMs, maxExpiresAtMs, token)
+    .run();
+}

src/services/storage-revision-repo.ts

@@ -0,0 +1,31 @@
+export async function getRevisionDate(db: D1Database, userId: string): Promise<string> {
+  const row = await db
+    .prepare('SELECT revision_date FROM user_revisions WHERE user_id = ?')
+    .bind(userId)
+    .first<{ revision_date: string }>();
+
+  if (row?.revision_date) return row.revision_date;
+
+  const date = new Date().toISOString();
+  await db
+    .prepare(
+      'INSERT INTO user_revisions(user_id, revision_date) VALUES(?, ?) ' +
+        'ON CONFLICT(user_id) DO NOTHING'
+    )
+    .bind(userId, date)
+    .run();
+
+  return date;
+}
+
+export async function updateRevisionDate(db: D1Database, userId: string): Promise<string> {
+  const date = new Date().toISOString();
+  await db
+    .prepare(
+      'INSERT INTO user_revisions(user_id, revision_date) VALUES(?, ?) ' +
+        'ON CONFLICT(user_id) DO UPDATE SET revision_date = excluded.revision_date'
+    )
+    .bind(userId, date)
+    .run();
+  return date;
+}

src/services/storage-schema.ts

@@ -0,0 +1,172 @@
+// IMPORTANT:
+// This is the runtime D1 schema bootstrap. Keep it in sync with
+// migrations/0001_init.sql. Any new table/column/index must be added to both
+// places together.
+//
+// WHEN CHANGING THIS:
+// - Bump STORAGE_SCHEMA_VERSION in src/services/storage.ts so existing installs
+//   rerun these idempotent statements.
+// - If the new table stores persistent data, update the backup export/import
+//   contract in src/services/backup-archive.ts and backup-import.ts.
+// - Keep statements idempotent; D1 may execute them again on later requests.
+const SCHEMA_STATEMENTS: readonly string[] = [
+  'CREATE TABLE IF NOT EXISTS users (' +
+  'id TEXT PRIMARY KEY, email TEXT NOT NULL UNIQUE, name TEXT, master_password_hint TEXT, master_password_hash TEXT NOT NULL, ' +
+  'key TEXT NOT NULL, private_key TEXT, public_key TEXT, kdf_type INTEGER NOT NULL, ' +
+  'kdf_iterations INTEGER NOT NULL, kdf_memory INTEGER, kdf_parallelism INTEGER, ' +
+  'security_stamp TEXT NOT NULL, role TEXT NOT NULL DEFAULT \'user\', status TEXT NOT NULL DEFAULT \'active\', verify_devices INTEGER NOT NULL DEFAULT 1, totp_secret TEXT, totp_recovery_code TEXT, api_key TEXT, created_at TEXT NOT NULL, updated_at TEXT NOT NULL)',
+  'ALTER TABLE users ADD COLUMN master_password_hint TEXT',
+  'ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT \'user\'',
+  'ALTER TABLE users ADD COLUMN status TEXT NOT NULL DEFAULT \'active\'',
+  'ALTER TABLE users ADD COLUMN verify_devices INTEGER NOT NULL DEFAULT 1',
+  'ALTER TABLE users ADD COLUMN totp_secret TEXT',
+  'ALTER TABLE users ADD COLUMN totp_recovery_code TEXT',
+  'ALTER TABLE users ADD COLUMN api_key TEXT',
+
+  'CREATE TABLE IF NOT EXISTS domain_settings (' +
+  'user_id TEXT PRIMARY KEY, equivalent_domains TEXT NOT NULL DEFAULT \'[]\', custom_equivalent_domains TEXT NOT NULL DEFAULT \'[]\', excluded_global_equivalent_domains TEXT NOT NULL DEFAULT \'[]\', updated_at TEXT NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'ALTER TABLE domain_settings ADD COLUMN custom_equivalent_domains TEXT NOT NULL DEFAULT \'[]\'',
+
+  'CREATE TABLE IF NOT EXISTS user_revisions (' +
+  'user_id TEXT PRIMARY KEY, revision_date TEXT NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+
+  'CREATE TABLE IF NOT EXISTS ciphers (' +
+  'id TEXT PRIMARY KEY, user_id TEXT NOT NULL, type INTEGER NOT NULL, folder_id TEXT, name TEXT, notes TEXT, ' +
+  'favorite INTEGER NOT NULL DEFAULT 0, data TEXT NOT NULL, reprompt INTEGER, key TEXT, ' +
+  'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, archived_at TEXT, deleted_at TEXT, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'ALTER TABLE ciphers ADD COLUMN archived_at TEXT',
+  'CREATE INDEX IF NOT EXISTS idx_ciphers_user_updated ON ciphers(user_id, updated_at)',
+  'CREATE INDEX IF NOT EXISTS idx_ciphers_user_archived ON ciphers(user_id, archived_at)',
+  'CREATE INDEX IF NOT EXISTS idx_ciphers_user_deleted ON ciphers(user_id, deleted_at)',
+  'CREATE INDEX IF NOT EXISTS idx_ciphers_user_deleted_updated ON ciphers(user_id, deleted_at, updated_at)',
+  'CREATE INDEX IF NOT EXISTS idx_ciphers_user_folder ON ciphers(user_id, folder_id)',
+
+  'CREATE TABLE IF NOT EXISTS folders (' +
+  'id TEXT PRIMARY KEY, user_id TEXT NOT NULL, name TEXT NOT NULL, created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_folders_user_updated ON folders(user_id, updated_at)',
+
+  'CREATE TABLE IF NOT EXISTS attachments (' +
+  'id TEXT PRIMARY KEY, cipher_id TEXT NOT NULL, file_name TEXT NOT NULL, size INTEGER NOT NULL, ' +
+  'size_name TEXT NOT NULL, key TEXT, ' +
+  'FOREIGN KEY (cipher_id) REFERENCES ciphers(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_attachments_cipher ON attachments(cipher_id)',
+
+  'CREATE TABLE IF NOT EXISTS sends (' +
+  'id TEXT PRIMARY KEY, user_id TEXT NOT NULL, type INTEGER NOT NULL, name TEXT NOT NULL, notes TEXT, data TEXT NOT NULL, ' +
+  'key TEXT NOT NULL, password_hash TEXT, password_salt TEXT, password_iterations INTEGER, auth_type INTEGER NOT NULL DEFAULT 2, emails TEXT, ' +
+  'max_access_count INTEGER, access_count INTEGER NOT NULL DEFAULT 0, disabled INTEGER NOT NULL DEFAULT 0, hide_email INTEGER, ' +
+  'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, expiration_date TEXT, deletion_date TEXT NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_sends_user_updated ON sends(user_id, updated_at)',
+  'CREATE INDEX IF NOT EXISTS idx_sends_user_deletion ON sends(user_id, deletion_date)',
+  'CREATE INDEX IF NOT EXISTS idx_sends_user_updated_id ON sends(user_id, updated_at, id)',
+  'ALTER TABLE sends ADD COLUMN auth_type INTEGER NOT NULL DEFAULT 2',
+  'ALTER TABLE sends ADD COLUMN emails TEXT',
+
+  'CREATE TABLE IF NOT EXISTS refresh_tokens (' +
+  'token TEXT PRIMARY KEY, user_id TEXT NOT NULL, expires_at INTEGER NOT NULL, device_identifier TEXT, device_session_stamp TEXT, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_refresh_tokens_user ON refresh_tokens(user_id)',
+  'ALTER TABLE refresh_tokens ADD COLUMN device_identifier TEXT',
+  'ALTER TABLE refresh_tokens ADD COLUMN device_session_stamp TEXT',
+
+  'CREATE TABLE IF NOT EXISTS invites (' +
+  'code TEXT PRIMARY KEY, created_by TEXT NOT NULL, used_by TEXT, expires_at TEXT NOT NULL, status TEXT NOT NULL, created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
+  'FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE CASCADE, ' +
+  'FOREIGN KEY (used_by) REFERENCES users(id) ON DELETE SET NULL)',
+  'CREATE INDEX IF NOT EXISTS idx_invites_status_expires ON invites(status, expires_at)',
+  'CREATE INDEX IF NOT EXISTS idx_invites_created_by ON invites(created_by, created_at)',
+
+  'CREATE TABLE IF NOT EXISTS audit_logs (' +
+  'id TEXT PRIMARY KEY, actor_user_id TEXT, action TEXT NOT NULL, category TEXT NOT NULL DEFAULT \'system\', level TEXT NOT NULL DEFAULT \'info\', target_type TEXT, target_id TEXT, metadata TEXT, created_at TEXT NOT NULL, ' +
+  'FOREIGN KEY (actor_user_id) REFERENCES users(id) ON DELETE SET NULL)',
+  'ALTER TABLE audit_logs ADD COLUMN category TEXT NOT NULL DEFAULT \'system\'',
+  'ALTER TABLE audit_logs ADD COLUMN level TEXT NOT NULL DEFAULT \'info\'',
+  'UPDATE audit_logs SET category = json_extract(metadata, \'$.category\') WHERE json_valid(metadata) AND json_extract(metadata, \'$.category\') IN (\'auth\', \'security\', \'device\', \'data\', \'system\')',
+  'UPDATE audit_logs SET level = json_extract(metadata, \'$.level\') WHERE json_valid(metadata) AND json_extract(metadata, \'$.level\') IN (\'info\', \'warn\', \'error\', \'security\')',
+  'CREATE INDEX IF NOT EXISTS idx_audit_logs_created_at ON audit_logs(created_at)',
+  'CREATE INDEX IF NOT EXISTS idx_audit_logs_actor_created ON audit_logs(actor_user_id, created_at)',
+  'CREATE INDEX IF NOT EXISTS idx_audit_logs_category_created ON audit_logs(category, created_at)',
+  'CREATE INDEX IF NOT EXISTS idx_audit_logs_level_created ON audit_logs(level, created_at)',
+
+  'CREATE TABLE IF NOT EXISTS devices (' +
+  'user_id TEXT NOT NULL, device_identifier TEXT NOT NULL, name TEXT NOT NULL, type INTEGER NOT NULL, session_stamp TEXT, encrypted_user_key TEXT, encrypted_public_key TEXT, encrypted_private_key TEXT, banned INTEGER NOT NULL DEFAULT 0, banned_at TEXT, device_note TEXT, last_seen_at TEXT, ' +
+  'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
+  'PRIMARY KEY (user_id, device_identifier), ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_devices_user_updated ON devices(user_id, updated_at)',
+  'ALTER TABLE devices ADD COLUMN session_stamp TEXT',
+  'ALTER TABLE devices ADD COLUMN encrypted_user_key TEXT',
+  'ALTER TABLE devices ADD COLUMN encrypted_public_key TEXT',
+  'ALTER TABLE devices ADD COLUMN encrypted_private_key TEXT',
+  'ALTER TABLE devices ADD COLUMN banned INTEGER NOT NULL DEFAULT 0',
+  'ALTER TABLE devices ADD COLUMN banned_at TEXT',
+  'ALTER TABLE devices ADD COLUMN device_note TEXT',
+  'ALTER TABLE devices ADD COLUMN last_seen_at TEXT',
+  'CREATE INDEX IF NOT EXISTS idx_devices_user_last_seen ON devices(user_id, last_seen_at)',
+
+  'CREATE TABLE IF NOT EXISTS trusted_two_factor_device_tokens (' +
+  'token TEXT PRIMARY KEY, user_id TEXT NOT NULL, device_identifier TEXT NOT NULL, expires_at INTEGER NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE INDEX IF NOT EXISTS idx_trusted_two_factor_device_tokens_user_device ON trusted_two_factor_device_tokens(user_id, device_identifier)',
+
+  'CREATE TABLE IF NOT EXISTS webauthn_credentials (' +
+  'id TEXT PRIMARY KEY, user_id TEXT NOT NULL, name TEXT NOT NULL, public_key TEXT NOT NULL, credential_id TEXT NOT NULL, counter INTEGER NOT NULL DEFAULT 0, ' +
+  'type TEXT, aa_guid TEXT, transports TEXT, encrypted_user_key TEXT, encrypted_public_key TEXT, encrypted_private_key TEXT, supports_prf INTEGER NOT NULL DEFAULT 0, ' +
+  'created_at TEXT NOT NULL, updated_at TEXT NOT NULL, ' +
+  'FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE)',
+  'CREATE UNIQUE INDEX IF NOT EXISTS idx_webauthn_credentials_credential_id ON webauthn_credentials(credential_id)',
+  'CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user ON webauthn_credentials(user_id)',
+  'CREATE INDEX IF NOT EXISTS idx_webauthn_credentials_user_updated ON webauthn_credentials(user_id, updated_at)',
+
+  'CREATE TABLE IF NOT EXISTS webauthn_challenges (' +
+  'challenge_hash TEXT PRIMARY KEY, scope TEXT NOT NULL, user_id TEXT, expires_at INTEGER NOT NULL, used_at INTEGER, created_at INTEGER NOT NULL)',
+  'CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_expires ON webauthn_challenges(expires_at)',
+  'CREATE INDEX IF NOT EXISTS idx_webauthn_challenges_user_scope ON webauthn_challenges(user_id, scope)',
+
+  'CREATE TABLE IF NOT EXISTS login_attempts_ip (' +
+  'ip TEXT PRIMARY KEY, attempts INTEGER NOT NULL, locked_until INTEGER, updated_at INTEGER NOT NULL)',
+
+  'CREATE TABLE IF NOT EXISTS used_attachment_download_tokens (' +
+  'jti TEXT PRIMARY KEY, expires_at INTEGER NOT NULL)',
+];
+
+async function executeSchemaStatement(db: D1Database, statement: string): Promise<void> {
+  try {
+    await db.prepare(statement).run();
+  } catch (error) {
+    const msg = error instanceof Error ? error.message.toLowerCase() : String(error).toLowerCase();
+    if (msg.includes('already exists') || msg.includes('duplicate column name')) {
+      return;
+    }
+    throw error;
+  }
+}
+
+async function ensureAdminUserExists(db: D1Database): Promise<void> {
+  const admin = await db.prepare("SELECT id FROM users WHERE role = 'admin' LIMIT 1").first<{ id: string }>();
+  if (admin?.id) return;
+
+  const firstUser = await db
+    .prepare('SELECT id FROM users ORDER BY created_at ASC LIMIT 1')
+    .first<{ id: string }>();
+  if (!firstUser?.id) return;
+
+  await db
+    .prepare("UPDATE users SET role = 'admin', updated_at = ? WHERE id = ?")
+    .bind(new Date().toISOString(), firstUser.id)
+    .run();
+}
+
+export async function ensureStorageSchema(db: D1Database): Promise<void> {
+  await db.prepare('PRAGMA foreign_keys = ON').run();
+  await db.prepare('CREATE TABLE IF NOT EXISTS config (key TEXT PRIMARY KEY, value TEXT NOT NULL)').run();
+  for (const stmt of SCHEMA_STATEMENTS) {
+    await executeSchemaStatement(db, stmt);
+  }
+  await ensureAdminUserExists(db);
+}

src/services/storage-send-repo.ts

@@ -0,0 +1,163 @@
+import type { Send } from '../types';
+
+type SafeBind = (stmt: D1PreparedStatement, ...values: any[]) => D1PreparedStatement;
+type SqlChunkSize = (fixedBindCount: number) => number;
+type UpdateRevisionDate = (userId: string) => Promise<string>;
+
+function mapSendRow(row: any): Send {
+  return {
+    id: row.id,
+    userId: row.user_id,
+    type: row.type,
+    name: row.name,
+    notes: row.notes,
+    data: row.data,
+    key: row.key,
+    passwordHash: row.password_hash,
+    passwordSalt: row.password_salt,
+    passwordIterations: row.password_iterations,
+    authType: row.auth_type ?? 0,
+    emails: row.emails ?? null,
+    maxAccessCount: row.max_access_count,
+    accessCount: row.access_count,
+    disabled: !!row.disabled,
+    hideEmail: row.hide_email === null || row.hide_email === undefined ? null : !!row.hide_email,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+    expirationDate: row.expiration_date,
+    deletionDate: row.deletion_date,
+  };
+}
+
+export async function getSend(db: D1Database, id: string): Promise<Send | null> {
+  const row = await db
+    .prepare(
+      'SELECT id, user_id, type, name, notes, data, key, password_hash, password_salt, password_iterations, auth_type, emails, max_access_count, access_count, disabled, hide_email, created_at, updated_at, expiration_date, deletion_date FROM sends WHERE id = ?'
+    )
+    .bind(id)
+    .first<any>();
+  if (!row) return null;
+  return mapSendRow(row);
+}
+
+export async function saveSend(db: D1Database, safeBind: SafeBind, send: Send): Promise<void> {
+  const stmt = db.prepare(
+    'INSERT INTO sends(id, user_id, type, name, notes, data, key, password_hash, password_salt, password_iterations, auth_type, emails, max_access_count, access_count, disabled, hide_email, created_at, updated_at, expiration_date, deletion_date) ' +
+    'VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ' +
+    'ON CONFLICT(id) DO UPDATE SET ' +
+    'user_id=excluded.user_id, type=excluded.type, name=excluded.name, notes=excluded.notes, data=excluded.data, key=excluded.key, ' +
+    'password_hash=excluded.password_hash, password_salt=excluded.password_salt, password_iterations=excluded.password_iterations, auth_type=excluded.auth_type, emails=excluded.emails, ' +
+    'max_access_count=excluded.max_access_count, access_count=excluded.access_count, disabled=excluded.disabled, hide_email=excluded.hide_email, ' +
+    'updated_at=excluded.updated_at, expiration_date=excluded.expiration_date, deletion_date=excluded.deletion_date'
+  );
+
+  await safeBind(
+    stmt,
+    send.id,
+    send.userId,
+    Number(send.type) || 0,
+    send.name,
+    send.notes,
+    send.data,
+    send.key,
+    send.passwordHash,
+    send.passwordSalt,
+    send.passwordIterations,
+    send.authType,
+    send.emails,
+    send.maxAccessCount,
+    send.accessCount,
+    send.disabled ? 1 : 0,
+    send.hideEmail === null || send.hideEmail === undefined ? null : send.hideEmail ? 1 : 0,
+    send.createdAt,
+    send.updatedAt,
+    send.expirationDate,
+    send.deletionDate
+  ).run();
+}
+
+export async function incrementSendAccessCount(db: D1Database, sendId: string): Promise<boolean> {
+  const now = new Date().toISOString();
+  const result = await db
+    .prepare(
+      'UPDATE sends SET access_count = access_count + 1, updated_at = ? ' +
+      'WHERE id = ? AND (max_access_count IS NULL OR access_count < max_access_count)'
+    )
+    .bind(now, sendId)
+    .run();
+  return (result.meta.changes ?? 0) > 0;
+}
+
+export async function deleteSend(db: D1Database, id: string, userId: string): Promise<void> {
+  await db.prepare('DELETE FROM sends WHERE id = ? AND user_id = ?').bind(id, userId).run();
+}
+
+export async function getSendsByIds(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  ids: string[],
+  userId: string
+): Promise<Send[]> {
+  if (ids.length === 0) return [];
+  const uniqueIds = Array.from(new Set(ids.map((id) => String(id || '').trim()).filter(Boolean)));
+  if (!uniqueIds.length) return [];
+  const chunkSize = sqlChunkSize(1);
+  const out: Send[] = [];
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    const res = await db
+      .prepare(
+        `SELECT id, user_id, type, name, notes, data, key, password_hash, password_salt, password_iterations, auth_type, emails, max_access_count, access_count, disabled, hide_email, created_at, updated_at, expiration_date, deletion_date
+         FROM sends
+         WHERE user_id = ? AND id IN (${placeholders})`
+      )
+      .bind(userId, ...chunk)
+      .all<any>();
+    out.push(...(res.results || []).map((row) => mapSendRow(row)));
+  }
+
+  return out;
+}
+
+export async function bulkDeleteSends(
+  db: D1Database,
+  sqlChunkSize: SqlChunkSize,
+  updateRevisionDate: UpdateRevisionDate,
+  ids: string[],
+  userId: string
+): Promise<string | null> {
+  if (ids.length === 0) return null;
+  const uniqueIds = Array.from(new Set(ids.map((id) => String(id || '').trim()).filter(Boolean)));
+  if (!uniqueIds.length) return null;
+  const chunkSize = sqlChunkSize(1);
+
+  for (let i = 0; i < uniqueIds.length; i += chunkSize) {
+    const chunk = uniqueIds.slice(i, i + chunkSize);
+    const placeholders = chunk.map(() => '?').join(',');
+    await db.prepare(`DELETE FROM sends WHERE user_id = ? AND id IN (${placeholders})`).bind(userId, ...chunk).run();
+  }
+
+  return updateRevisionDate(userId);
+}
+
+export async function getAllSends(db: D1Database, userId: string): Promise<Send[]> {
+  const res = await db
+    .prepare(
+      'SELECT id, user_id, type, name, notes, data, key, password_hash, password_salt, password_iterations, auth_type, emails, max_access_count, access_count, disabled, hide_email, created_at, updated_at, expiration_date, deletion_date FROM sends WHERE user_id = ? ORDER BY updated_at DESC'
+    )
+    .bind(userId)
+    .all<any>();
+  return (res.results || []).map((row) => mapSendRow(row));
+}
+
+export async function getSendsPage(db: D1Database, userId: string, limit: number, offset: number): Promise<Send[]> {
+  const res = await db
+    .prepare(
+      'SELECT id, user_id, type, name, notes, data, key, password_hash, password_salt, password_iterations, auth_type, emails, max_access_count, access_count, disabled, hide_email, created_at, updated_at, expiration_date, deletion_date FROM sends WHERE user_id = ? ORDER BY updated_at DESC LIMIT ? OFFSET ?'
+    )
+    .bind(userId, limit, offset)
+    .all<any>();
+  return (res.results || []).map((row) => mapSendRow(row));
+}

src/services/storage-user-repo.ts

@@ -0,0 +1,142 @@
+import type { User } from '../types';
+
+type SafeBind = (stmt: D1PreparedStatement, ...values: any[]) => D1PreparedStatement;
+const USER_SELECT_COLUMNS =
+  'id, email, name, master_password_hint, master_password_hash, key, private_key, public_key, ' +
+  'kdf_type, kdf_iterations, kdf_memory, kdf_parallelism, security_stamp, role, status, verify_devices, ' +
+  'totp_secret, totp_recovery_code, api_key, created_at, updated_at';
+
+function mapUserRow(row: any): User {
+  return {
+    id: row.id,
+    email: row.email,
+    name: row.name,
+    masterPasswordHint: row.master_password_hint ?? null,
+    masterPasswordHash: row.master_password_hash,
+    key: row.key,
+    privateKey: row.private_key,
+    publicKey: row.public_key,
+    kdfType: row.kdf_type,
+    kdfIterations: row.kdf_iterations,
+    kdfMemory: row.kdf_memory ?? undefined,
+    kdfParallelism: row.kdf_parallelism ?? undefined,
+    securityStamp: row.security_stamp,
+    role: row.role === 'admin' ? 'admin' : 'user',
+    status: row.status === 'banned' ? 'banned' : 'active',
+    verifyDevices: row.verify_devices == null ? true : !!row.verify_devices,
+    totpSecret: row.totp_secret ?? null,
+    totpRecoveryCode: row.totp_recovery_code ?? null,
+    apiKey: row.api_key ?? null,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  };
+}
+
+export async function getUser(db: D1Database, email: string): Promise<User | null> {
+  const row = await db
+    .prepare(`SELECT ${USER_SELECT_COLUMNS} FROM users WHERE email = ?`)
+    .bind(email.toLowerCase())
+    .first<any>();
+  if (!row) return null;
+  return mapUserRow(row);
+}
+
+export async function getUserById(db: D1Database, id: string): Promise<User | null> {
+  const row = await db
+    .prepare(`SELECT ${USER_SELECT_COLUMNS} FROM users WHERE id = ?`)
+    .bind(id)
+    .first<any>();
+  if (!row) return null;
+  return mapUserRow(row);
+}
+
+export async function getUserCount(db: D1Database): Promise<number> {
+  const row = await db.prepare('SELECT COUNT(*) AS count FROM users').first<{ count: number }>();
+  return Number(row?.count || 0);
+}
+
+export async function getAllUsers(db: D1Database): Promise<User[]> {
+  const res = await db
+    .prepare(`SELECT ${USER_SELECT_COLUMNS} FROM users ORDER BY created_at ASC`)
+    .all<any>();
+  return (res.results || []).map((row) => mapUserRow(row));
+}
+
+export async function saveUser(db: D1Database, safeBind: SafeBind, user: User): Promise<void> {
+  const email = user.email.toLowerCase();
+  const stmt = db.prepare(
+    'INSERT INTO users(id, email, name, master_password_hint, master_password_hash, key, private_key, public_key, kdf_type, kdf_iterations, kdf_memory, kdf_parallelism, security_stamp, role, status, verify_devices, totp_secret, totp_recovery_code, api_key, created_at, updated_at) ' +
+    'VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ' +
+    'ON CONFLICT(id) DO UPDATE SET ' +
+    'email=excluded.email, name=excluded.name, master_password_hint=excluded.master_password_hint, master_password_hash=excluded.master_password_hash, key=excluded.key, private_key=excluded.private_key, public_key=excluded.public_key, ' +
+    'kdf_type=excluded.kdf_type, kdf_iterations=excluded.kdf_iterations, kdf_memory=excluded.kdf_memory, kdf_parallelism=excluded.kdf_parallelism, security_stamp=excluded.security_stamp, role=excluded.role, status=excluded.status, verify_devices=excluded.verify_devices, totp_secret=excluded.totp_secret, totp_recovery_code=excluded.totp_recovery_code, api_key=excluded.api_key, updated_at=excluded.updated_at'
+  );
+  await safeBind(
+    stmt,
+    user.id,
+    email,
+    user.name,
+    user.masterPasswordHint,
+    user.masterPasswordHash,
+    user.key,
+    user.privateKey,
+    user.publicKey,
+    user.kdfType,
+    user.kdfIterations,
+    user.kdfMemory,
+    user.kdfParallelism,
+    user.securityStamp,
+    user.role,
+    user.status,
+    user.verifyDevices ? 1 : 0,
+    user.totpSecret,
+    user.totpRecoveryCode,
+    user.apiKey,
+    user.createdAt,
+    user.updatedAt
+  ).run();
+}
+
+export async function createUser(db: D1Database, safeBind: SafeBind, user: User): Promise<void> {
+  await saveUser(db, safeBind, user);
+}
+
+export async function createFirstUser(db: D1Database, safeBind: SafeBind, user: User): Promise<boolean> {
+  const email = user.email.toLowerCase();
+  const stmt = db.prepare(
+    'INSERT INTO users(id, email, name, master_password_hint, master_password_hash, key, private_key, public_key, kdf_type, kdf_iterations, kdf_memory, kdf_parallelism, security_stamp, role, status, verify_devices, totp_secret, totp_recovery_code, api_key, created_at, updated_at) ' +
+    'SELECT ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ' +
+    'WHERE NOT EXISTS (SELECT 1 FROM users LIMIT 1)'
+  );
+  const result = await safeBind(
+    stmt,
+    user.id,
+    email,
+    user.name,
+    user.masterPasswordHint,
+    user.masterPasswordHash,
+    user.key,
+    user.privateKey,
+    user.publicKey,
+    user.kdfType,
+    user.kdfIterations,
+    user.kdfMemory,
+    user.kdfParallelism,
+    user.securityStamp,
+    user.role,
+    user.status,
+    user.verifyDevices ? 1 : 0,
+    user.totpSecret,
+    user.totpRecoveryCode,
+    user.apiKey,
+    user.createdAt,
+    user.updatedAt
+  ).run();
+
+  return (result.meta.changes ?? 0) > 0;
+}
+
+export async function deleteUserById(db: D1Database, id: string): Promise<boolean> {
+  const result = await db.prepare('DELETE FROM users WHERE id = ?').bind(id).run();
+  return (result.meta.changes ?? 0) > 0;
+}

src/static/global_domains.bitwarden.json

@@ -0,0 +1,93 @@
+[
+  {"type":2,"domains":["ameritrade.com","tdameritrade.com"],"excluded":false},
+  {"type":3,"domains":["bankofamerica.com","bofa.com","mbna.com","usecfo.com"],"excluded":false},
+  {"type":4,"domains":["sprint.com","sprintpcs.com","nextel.com"],"excluded":false},
+  {"type":0,"domains":["youtube.com","google.com","gmail.com"],"excluded":false},
+  {"type":1,"domains":["apple.com","icloud.com"],"excluded":false},
+  {"type":5,"domains":["wellsfargo.com","wf.com","wellsfargoadvisors.com"],"excluded":false},
+  {"type":6,"domains":["mymerrill.com","ml.com","merrilledge.com"],"excluded":false},
+  {"type":7,"domains":["accountonline.com","citi.com","citibank.com","citicards.com","citibankonline.com"],"excluded":false},
+  {"type":8,"domains":["cnet.com","cnettv.com","com.com","download.com","news.com","search.com","upload.com"],"excluded":false},
+  {"type":9,"domains":["bananarepublic.com","gap.com","oldnavy.com","piperlime.com"],"excluded":false},
+  {"type":10,"domains":["bing.com","hotmail.com","live.com","microsoft.com","msn.com","passport.net","windows.com","microsoftonline.com","office.com","office365.com","microsoftstore.com","xbox.com","azure.com","windowsazure.com","cloud.microsoft"],"excluded":false},
+  {"type":11,"domains":["ua2go.com","ual.com","united.com","unitedwifi.com"],"excluded":false},
+  {"type":12,"domains":["overture.com","yahoo.com"],"excluded":false},
+  {"type":13,"domains":["zonealarm.com","zonelabs.com"],"excluded":false},
+  {"type":14,"domains":["paypal.com","paypal-search.com"],"excluded":false},
+  {"type":15,"domains":["avon.com","youravon.com"],"excluded":false},
+  {"type":16,"domains":["diapers.com","soap.com","wag.com","yoyo.com","beautybar.com","casa.com","afterschool.com","vine.com","bookworm.com","look.com","vinemarket.com"],"excluded":false},
+  {"type":17,"domains":["1800contacts.com","800contacts.com"],"excluded":false},
+  {"type":18,"domains":["amazon.com","amazon.com.be","amazon.ae","amazon.ca","amazon.co.uk","amazon.com.au","amazon.com.br","amazon.com.mx","amazon.com.tr","amazon.de","amazon.es","amazon.fr","amazon.in","amazon.it","amazon.nl","amazon.pl","amazon.sa","amazon.se","amazon.sg"],"excluded":false},
+  {"type":19,"domains":["cox.com","cox.net","coxbusiness.com"],"excluded":false},
+  {"type":20,"domains":["mynortonaccount.com","norton.com"],"excluded":false},
+  {"type":21,"domains":["verizon.com","verizon.net"],"excluded":false},
+  {"type":22,"domains":["rakuten.com","buy.com"],"excluded":false},
+  {"type":23,"domains":["siriusxm.com","sirius.com"],"excluded":false},
+  {"type":24,"domains":["ea.com","origin.com","play4free.com","tiberiumalliance.com"],"excluded":false},
+  {"type":25,"domains":["37signals.com","basecamp.com","basecamphq.com","highrisehq.com"],"excluded":false},
+  {"type":26,"domains":["steampowered.com","steamcommunity.com","steamgames.com"],"excluded":false},
+  {"type":27,"domains":["chart.io","chartio.com"],"excluded":false},
+  {"type":28,"domains":["gotomeeting.com","citrixonline.com"],"excluded":false},
+  {"type":29,"domains":["gogoair.com","gogoinflight.com"],"excluded":false},
+  {"type":30,"domains":["mysql.com","oracle.com"],"excluded":false},
+  {"type":31,"domains":["discover.com","discovercard.com"],"excluded":false},
+  {"type":32,"domains":["dcu.org","dcu-online.org"],"excluded":false},
+  {"type":33,"domains":["healthcare.gov","cuidadodesalud.gov","cms.gov"],"excluded":false},
+  {"type":34,"domains":["pepco.com","pepcoholdings.com"],"excluded":false},
+  {"type":35,"domains":["century21.com","21online.com"],"excluded":false},
+  {"type":36,"domains":["comcast.com","comcast.net","xfinity.com"],"excluded":false},
+  {"type":37,"domains":["cricketwireless.com","aiowireless.com"],"excluded":false},
+  {"type":38,"domains":["mandtbank.com","mtb.com"],"excluded":false},
+  {"type":39,"domains":["dropbox.com","getdropbox.com"],"excluded":false},
+  {"type":40,"domains":["snapfish.com","snapfish.ca"],"excluded":false},
+  {"type":41,"domains":["alibaba.com","aliexpress.com","aliyun.com","net.cn"],"excluded":false},
+  {"type":42,"domains":["playstation.com","sonyentertainmentnetwork.com"],"excluded":false},
+  {"type":43,"domains":["mercadolivre.com","mercadolivre.com.br","mercadolibre.com","mercadolibre.com.ar","mercadolibre.com.mx"],"excluded":false},
+  {"type":44,"domains":["zendesk.com","zopim.com"],"excluded":false},
+  {"type":45,"domains":["autodesk.com","tinkercad.com"],"excluded":false},
+  {"type":46,"domains":["railnation.ru","railnation.de","rail-nation.com","railnation.gr","railnation.us","trucknation.de","traviangames.com"],"excluded":false},
+  {"type":47,"domains":["wpcu.coop","wpcuonline.com"],"excluded":false},
+  {"type":48,"domains":["mathletics.com","mathletics.com.au","mathletics.co.uk"],"excluded":false},
+  {"type":49,"domains":["discountbank.co.il","telebank.co.il"],"excluded":false},
+  {"type":50,"domains":["mi.com","xiaomi.com"],"excluded":false},
+  {"type":52,"domains":["postepay.it","poste.it"],"excluded":false},
+  {"type":51,"domains":["facebook.com","messenger.com"],"excluded":false},
+  {"type":53,"domains":["skysports.com","skybet.com","skyvegas.com"],"excluded":false},
+  {"type":54,"domains":["disneymoviesanywhere.com","go.com","disney.com","dadt.com","disneyplus.com"],"excluded":false},
+  {"type":55,"domains":["pokemon-gl.com","pokemon.com"],"excluded":false},
+  {"type":56,"domains":["myuv.com","uvvu.com"],"excluded":false},
+  {"type":58,"domains":["mdsol.com","imedidata.com"],"excluded":false},
+  {"type":57,"domains":["bank-yahav.co.il","bankhapoalim.co.il"],"excluded":false},
+  {"type":59,"domains":["sears.com","shld.net"],"excluded":false},
+  {"type":60,"domains":["xiami.com","alipay.com"],"excluded":false},
+  {"type":61,"domains":["belkin.com","seedonk.com"],"excluded":false},
+  {"type":62,"domains":["turbotax.com","intuit.com"],"excluded":false},
+  {"type":63,"domains":["shopify.com","myshopify.com"],"excluded":false},
+  {"type":64,"domains":["ebay.com","ebay.at","ebay.be","ebay.ca","ebay.ch","ebay.cn","ebay.co.jp","ebay.co.th","ebay.co.uk","ebay.com.au","ebay.com.hk","ebay.com.my","ebay.com.sg","ebay.com.tw","ebay.de","ebay.es","ebay.fr","ebay.ie","ebay.in","ebay.it","ebay.nl","ebay.ph","ebay.pl"],"excluded":false},
+  {"type":65,"domains":["techdata.com","techdata.ch"],"excluded":false},
+  {"type":66,"domains":["schwab.com","schwabplan.com"],"excluded":false},
+  {"type":68,"domains":["tesla.com","teslamotors.com"],"excluded":false},
+  {"type":69,"domains":["morganstanley.com","morganstanleyclientserv.com","stockplanconnect.com","ms.com"],"excluded":false},
+  {"type":70,"domains":["taxact.com","taxactonline.com"],"excluded":false},
+  {"type":71,"domains":["mediawiki.org","wikibooks.org","wikidata.org","wikimedia.org","wikinews.org","wikipedia.org","wikiquote.org","wikisource.org","wikiversity.org","wikivoyage.org","wiktionary.org"],"excluded":false},
+  {"type":72,"domains":["airbnb.at","airbnb.be","airbnb.ca","airbnb.ch","airbnb.cl","airbnb.co.cr","airbnb.co.id","airbnb.co.in","airbnb.co.kr","airbnb.co.nz","airbnb.co.uk","airbnb.co.ve","airbnb.com","airbnb.com.ar","airbnb.com.au","airbnb.com.bo","airbnb.com.br","airbnb.com.bz","airbnb.com.co","airbnb.com.ec","airbnb.com.gt","airbnb.com.hk","airbnb.com.hn","airbnb.com.mt","airbnb.com.my","airbnb.com.ni","airbnb.com.pa","airbnb.com.pe","airbnb.com.py","airbnb.com.sg","airbnb.com.sv","airbnb.com.tr","airbnb.com.tw","airbnb.cz","airbnb.de","airbnb.dk","airbnb.es","airbnb.fi","airbnb.fr","airbnb.gr","airbnb.gy","airbnb.hu","airbnb.ie","airbnb.is","airbnb.it","airbnb.jp","airbnb.mx","airbnb.nl","airbnb.no","airbnb.pl","airbnb.pt","airbnb.ru","airbnb.se"],"excluded":false},
+  {"type":73,"domains":["eventbrite.at","eventbrite.be","eventbrite.ca","eventbrite.ch","eventbrite.cl","eventbrite.co","eventbrite.co.nz","eventbrite.co.uk","eventbrite.com","eventbrite.com.ar","eventbrite.com.au","eventbrite.com.br","eventbrite.com.mx","eventbrite.com.pe","eventbrite.de","eventbrite.dk","eventbrite.es","eventbrite.fi","eventbrite.fr","eventbrite.hk","eventbrite.ie","eventbrite.it","eventbrite.nl","eventbrite.pt","eventbrite.se","eventbrite.sg"],"excluded":false},
+  {"type":74,"domains":["stackexchange.com","superuser.com","stackoverflow.com","serverfault.com","mathoverflow.net","askubuntu.com","stackapps.com"],"excluded":false},
+  {"type":75,"domains":["docusign.com","docusign.net"],"excluded":false},
+  {"type":76,"domains":["envato.com","themeforest.net","codecanyon.net","videohive.net","audiojungle.net","graphicriver.net","photodune.net","3docean.net"],"excluded":false},
+  {"type":77,"domains":["x10hosting.com","x10premium.com"],"excluded":false},
+  {"type":78,"domains":["dnsomatic.com","opendns.com","umbrella.com"],"excluded":false},
+  {"type":79,"domains":["cagreatamerica.com","canadaswonderland.com","carowinds.com","cedarfair.com","cedarpoint.com","dorneypark.com","kingsdominion.com","knotts.com","miadventure.com","schlitterbahn.com","valleyfair.com","visitkingsisland.com","worldsoffun.com"],"excluded":false},
+  {"type":80,"domains":["ubnt.com","ui.com"],"excluded":false},
+  {"type":81,"domains":["discordapp.com","discord.com"],"excluded":false},
+  {"type":82,"domains":["netcup.de","netcup.eu","customercontrolpanel.de"],"excluded":false},
+  {"type":83,"domains":["yandex.com","ya.ru","yandex.az","yandex.by","yandex.co.il","yandex.com.am","yandex.com.ge","yandex.com.tr","yandex.ee","yandex.fi","yandex.fr","yandex.kg","yandex.kz","yandex.lt","yandex.lv","yandex.md","yandex.pl","yandex.ru","yandex.tj","yandex.tm","yandex.ua","yandex.uz"],"excluded":false},
+  {"type":84,"domains":["sonyentertainmentnetwork.com","sony.com"],"excluded":false},
+  {"type":85,"domains":["proton.me","protonmail.com","protonvpn.com"],"excluded":false},
+  {"type":86,"domains":["ubisoft.com","ubi.com"],"excluded":false},
+  {"type":87,"domains":["transferwise.com","wise.com"],"excluded":false},
+  {"type":88,"domains":["takeaway.com","just-eat.dk","just-eat.no","just-eat.fr","just-eat.ch","lieferando.de","lieferando.at","thuisbezorgd.nl","pyszne.pl"],"excluded":false},
+  {"type":89,"domains":["atlassian.com","bitbucket.org","trello.com","statuspage.io","atlassian.net","jira.com"],"excluded":false},
+  {"type":90,"domains":["pinterest.com","pinterest.com.au","pinterest.cl","pinterest.de","pinterest.dk","pinterest.es","pinterest.fr","pinterest.co.uk","pinterest.jp","pinterest.co.kr","pinterest.nz","pinterest.pt","pinterest.se"],"excluded":false},
+  {"type":91,"domains":["twitter.com","x.com"],"excluded":false}
+]

src/static/global_domains.bitwarden.meta.json

@@ -0,0 +1,15 @@
+{
+  "source": "https://github.com/bitwarden/server",
+  "ref": "main",
+  "generatedAt": "2026-05-05T00:00:00.000Z",
+  "rulesCount": 91,
+  "domainsCount": 436,
+  "sourceFiles": [
+    "src/Core/Enums/GlobalEquivalentDomainsType.cs",
+    "src/Core/Utilities/StaticStore.cs"
+  ],
+  "sourceUrls": [
+    "https://raw.githubusercontent.com/bitwarden/server/main/src/Core/Enums/GlobalEquivalentDomainsType.cs",
+    "https://raw.githubusercontent.com/bitwarden/server/main/src/Core/Utilities/StaticStore.cs"
+  ]
+}

src/static/global_domains.custom.json

@@ -0,0 +1,3 @@
+[
+  {"type":-10001,"domains":["nodewarden.example","nw.example"],"excluded":false,"source":"nodewarden"}
+]

src/types/index.ts

@@ -1,10 +1,24 @@
 // Environment bindings
 export interface Env {
   DB: D1Database;
-  ATTACHMENTS: R2Bucket;
+  NOTIFICATIONS_HUB: DurableObjectNamespace;
+  BACKUP_TRANSFER_RUNNER: DurableObjectNamespace;
+  ASSETS?: {
+    fetch(input: RequestInfo | URL, init?: RequestInit): Promise<Response>;
+  };
+  // Prefer R2 when available. Optional to support KV-only deployments.
+  ATTACHMENTS?: R2Bucket;
+  // Optional fallback for attachment/send file storage (no credit card required).
+  ATTACHMENTS_KV?: KVNamespace;
   JWT_SECRET: string;
+  WEBAUTHN_RP_ID?: string;
+  WEBAUTHN_RP_NAME?: string;
+  WEBAUTHN_ALLOWED_ORIGINS?: string;
 }
 
+export type UserRole = 'admin' | 'user';
+export type UserStatus = 'active' | 'banned';
+
 // Sample JWT secret used by `.dev.vars.example`.
 // If runtime JWT_SECRET equals this value, treat it as unsafe.
 export const DEFAULT_DEV_SECRET = 'Enter-your-JWT-key-here-at-least-32-characters';
@@ -24,6 +38,7 @@ export interface User {
   id: string;
   email: string;
   name: string | null;
+  masterPasswordHint: string | null;
   masterPasswordHash: string;
   key: string;
   privateKey: string | null;
@@ -33,10 +48,68 @@ export interface User {
   kdfMemory?: number;
   kdfParallelism?: number;
   securityStamp: string;
+  role: UserRole;
+  status: UserStatus;
+  verifyDevices?: boolean;
+  totpSecret: string | null;
+  totpRecoveryCode: string | null;
+  apiKey: string | null;
   createdAt: string;
   updatedAt: string;
 }
 
+export interface UserDomainSettings {
+  userId: string;
+  equivalentDomains: string[][];
+  customEquivalentDomains: CustomEquivalentDomain[];
+  excludedGlobalEquivalentDomains: number[];
+  updatedAt: string | null;
+}
+
+export interface CustomEquivalentDomain {
+  id: string;
+  domains: string[];
+  excluded: boolean;
+}
+
+export interface GlobalEquivalentDomain {
+  type: number;
+  domains: string[];
+  excluded: boolean;
+  [key: string]: unknown;
+}
+
+export interface DomainRulesResponse {
+  equivalentDomains: string[][];
+  customEquivalentDomains: CustomEquivalentDomain[];
+  globalEquivalentDomains: GlobalEquivalentDomain[];
+  object: 'domains';
+}
+
+export interface Invite {
+  code: string;
+  createdBy: string;
+  usedBy: string | null;
+  expiresAt: string;
+  status: 'active' | 'used' | 'revoked' | 'expired';
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface AuditLog {
+  id: string;
+  actorUserId: string | null;
+  actorEmail?: string | null;
+  action: string;
+  category: 'auth' | 'security' | 'device' | 'data' | 'system';
+  level: 'info' | 'warn' | 'error' | 'security';
+  targetType: string | null;
+  targetId: string | null;
+  targetUserEmail?: string | null;
+  metadata: string | null;
+  createdAt: string;
+}
+
 // Cipher types
 export enum CipherType {
   Login = 1,
@@ -133,7 +206,10 @@ export interface Cipher {
   key: string | null;
   createdAt: string;
   updatedAt: string;
+  archivedAt: string | null;
   deletedAt: string | null;
+  /** Allow unknown fields from Bitwarden clients to be stored and passed through transparently. */
+  [key: string]: any;
 }
 
 // Folder model
@@ -145,6 +221,159 @@ export interface Folder {
   updatedAt: string;
 }
 
+export interface Device {
+  userId: string;
+  deviceIdentifier: string;
+  name: string;
+  deviceNote: string | null;
+  type: number;
+  sessionStamp: string;
+  encryptedUserKey: string | null;
+  encryptedPublicKey: string | null;
+  encryptedPrivateKey: string | null;
+  devicePendingAuthRequest?: DevicePendingAuthRequest | null;
+  lastSeenAt: string | null;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export type AccountPasskeyPrfStatus = 0 | 1 | 2;
+
+export interface AccountPasskeyCredential {
+  id: string;
+  userId: string;
+  name: string;
+  publicKey: string;
+  credentialId: string;
+  counter: number;
+  type: string | null;
+  aaGuid: string | null;
+  transports: string[] | null;
+  encryptedUserKey: string | null;
+  encryptedPublicKey: string | null;
+  encryptedPrivateKey: string | null;
+  supportsPrf: boolean;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export type AccountPasskeyChallengeScope = 'Authentication' | 'CreateCredential' | 'UpdateKeySet';
+
+export interface AccountPasskeyChallenge {
+  challengeHash: string;
+  scope: AccountPasskeyChallengeScope;
+  userId: string | null;
+  expiresAt: number;
+  usedAt: number | null;
+  createdAt: number;
+}
+
+export interface DevicePendingAuthRequest {
+  id: string;
+  creationDate: string;
+}
+
+export interface DeviceResponse {
+  id: string;
+  userId?: string | null;
+  name: string;
+  systemName?: string | null;
+  deviceNote?: string | null;
+  identifier: string;
+  type: number;
+  creationDate: string;
+  revisionDate: string;
+  lastSeenAt?: string | null;
+  hasStoredDevice?: boolean;
+  isTrusted: boolean;
+  encryptedUserKey: string | null;
+  encryptedPublicKey: string | null;
+  devicePendingAuthRequest: DevicePendingAuthRequest | null;
+  object: string;
+  [key: string]: any;
+}
+
+export interface ProtectedDeviceResponse {
+  id: string;
+  name: string;
+  identifier: string;
+  type: number;
+  creationDate: string;
+  encryptedUserKey: string | null;
+  encryptedPublicKey: string | null;
+  object: string;
+  [key: string]: any;
+}
+
+export interface RefreshTokenRecord {
+  userId: string;
+  expiresAt: number;
+  deviceIdentifier: string | null;
+  deviceSessionStamp: string | null;
+}
+
+export interface TrustedDeviceTokenSummary {
+  deviceIdentifier: string;
+  expiresAt: number;
+  tokenCount: number;
+}
+
+export enum SendType {
+  Text = 0,
+  File = 1,
+}
+
+export enum SendAuthType {
+  Email = 0,
+  Password = 1,
+  None = 2,
+}
+
+export interface Send {
+  id: string;
+  userId: string;
+  type: SendType;
+  name: string;
+  notes: string | null;
+  data: string;
+  key: string;
+  passwordHash: string | null;
+  passwordSalt: string | null;
+  passwordIterations: number | null;
+  authType: SendAuthType;
+  emails: string | null;
+  maxAccessCount: number | null;
+  accessCount: number;
+  disabled: boolean;
+  hideEmail: boolean | null;
+  createdAt: string;
+  updatedAt: string;
+  expirationDate: string | null;
+  deletionDate: string;
+}
+
+export interface SendResponse {
+  id: string;
+  accessId: string;
+  type: number;
+  name: string;
+  notes: string | null;
+  text: any | null;
+  file: any | null;
+  key: string;
+  maxAccessCount: number | null;
+  accessCount: number;
+  password: string | null;
+  emails: string | null;
+  authType: SendAuthType;
+  disabled: boolean;
+  hideEmail: boolean | null;
+  revisionDate: string;
+  expirationDate: string | null;
+  deletionDate: string;
+  object: string;
+}
+
 // JWT Payload
 export interface JWTPayload {
   sub: string;      // user id
@@ -153,6 +382,8 @@ export interface JWTPayload {
   email_verified: boolean; // required by mobile client
   amr: string[];    // authentication methods reference - required by mobile client
   sstamp: string;   // security stamp - invalidates token when user changes password
+  did?: string;     // device identifier - invalidates per-device sessions
+  dstamp?: string;  // device session stamp
   iat: number;
   exp: number;
   iss: string;
@@ -175,11 +406,22 @@ export interface MasterPasswordUnlock {
   Object: string;
 }
 
+export interface WebAuthnPrfDecryptionOption {
+  EncryptedPrivateKey: string;
+  EncryptedUserKey: string;
+  CredentialId: string;
+  Transports: string[];
+  Object?: string;
+}
+
 export interface UserDecryptionOptions {
   HasMasterPassword: boolean;
   Object: string;
   // Bitwarden Android 2026.1.x expects this to exist; missing it breaks unlock when the vault is empty.
   MasterPasswordUnlock: MasterPasswordUnlock;
+  TrustedDeviceOption: null;
+  KeyConnectorOption: null;
+  WebAuthnPrfOption?: WebAuthnPrfDecryptionOption | null;
 }
 
 // API Response types
@@ -187,7 +429,9 @@ export interface TokenResponse {
   access_token: string;
   expires_in: number;
   token_type: string;
-  refresh_token: string;
+  refresh_token?: string;
+  web_session?: boolean;
+  TwoFactorToken?: string;
   Key: string;
   PrivateKey: string | null;
   Kdf: number;
@@ -198,7 +442,18 @@ export interface TokenResponse {
   ResetMasterPassword: boolean;
   scope: string;
   unofficialServer: boolean;
+  MasterPasswordPolicy?: {
+    Object: string;
+  } | null;
+  ApiUseKeyConnector?: boolean;
+  AccountKeys?: any | null;
+  accountKeys?: any | null;
   UserDecryptionOptions: UserDecryptionOptions;
+  userDecryptionOptions?: UserDecryptionOptions;
+  VaultKeys?: {
+    symEncKey: string;
+    symMacKey: string;
+  };
 }
 
 export interface ProfileResponse {
@@ -222,6 +477,9 @@ export interface ProfileResponse {
   forcePasswordReset: boolean;
   avatarColor: string | null;
   creationDate: string;
+  verifyDevices?: boolean;
+  role?: UserRole;
+  status?: UserStatus;
   object: string;
 }
 
@@ -254,6 +512,8 @@ export interface CipherResponse {
   attachments: any[] | null;
   key: string | null;
   encryptedFor: string | null;
+  /** Allow unknown fields to pass through to clients transparently. */
+  [key: string]: any;
 }
 
 export interface CipherPermissions {
@@ -265,6 +525,7 @@ export interface FolderResponse {
   id: string;
   name: string;
   revisionDate: string;
+  creationDate: string;
   object: string;
 }
 
@@ -275,7 +536,15 @@ export interface SyncResponse {
   ciphers: CipherResponse[];
   domains: any;
   policies: any[];
-  sends: any[];
+  sends: SendResponse[];
+  UserDecryption?: {
+    MasterPasswordUnlock: MasterPasswordUnlock | null;
+    TrustedDeviceOption?: null;
+    KeyConnectorOption?: null;
+    WebAuthnPrfOption?: WebAuthnPrfDecryptionOption | null;
+    WebAuthnPrfOptions?: WebAuthnPrfDecryptionOption[];
+    Object?: string;
+  } | null;
   // PascalCase for desktop/browser clients
   UserDecryptionOptions: UserDecryptionOptions | null;
   // camelCase for Android client (SyncResponseJson uses @SerialName("userDecryption"))

src/utils/account-passkeys.ts

@@ -0,0 +1,269 @@
+import type {
+  AuthenticationResponseJSON,
+  AuthenticatorTransportFuture,
+  RegistrationResponseJSON,
+  WebAuthnCredential,
+} from '@simplewebauthn/server';
+import type {
+  AccountPasskeyChallengeScope,
+  AccountPasskeyCredential,
+  AccountPasskeyPrfStatus,
+  Env,
+  WebAuthnPrfDecryptionOption,
+} from '../types';
+import { base64UrlToBytes, bytesToBase64Url } from './passkey';
+
+const ACCOUNT_PASSKEY_TOKEN_TYPE = 'nodewarden.account-passkey.challenge.v1';
+const ACCOUNT_PASSKEY_TOKEN_TTL_MS = 17 * 60 * 1000;
+const ACCOUNT_PASSKEY_CREATE_TOKEN_TTL_MS = 7 * 60 * 1000;
+const DEFAULT_RP_NAME = 'NodeWarden';
+
+interface AccountPasskeyTokenPayload {
+  typ: typeof ACCOUNT_PASSKEY_TOKEN_TYPE;
+  scope: AccountPasskeyChallengeScope;
+  challenge: string;
+  userId: string | null;
+  rpId: string;
+  iat: number;
+  exp: number;
+}
+
+function textBytes(value: string): Uint8Array {
+  return new TextEncoder().encode(value);
+}
+
+async function importHmacKey(secret: string): Promise<CryptoKey> {
+  return crypto.subtle.importKey('raw', textBytes(secret), { name: 'HMAC', hash: 'SHA-256' }, false, ['sign', 'verify']);
+}
+
+async function hmacSha256(secret: string, data: string): Promise<Uint8Array> {
+  const key = await importHmacKey(secret);
+  return new Uint8Array(await crypto.subtle.sign('HMAC', key, textBytes(data)));
+}
+
+function encodeJson(value: unknown): string {
+  return bytesToBase64Url(textBytes(JSON.stringify(value)));
+}
+
+function decodeJson<T>(value: string): T | null {
+  try {
+    return JSON.parse(new TextDecoder().decode(base64UrlToBytes(value))) as T;
+  } catch {
+    return null;
+  }
+}
+
+export async function sha256Base64Url(value: string): Promise<string> {
+  const digest = await crypto.subtle.digest('SHA-256', textBytes(value));
+  return bytesToBase64Url(new Uint8Array(digest));
+}
+
+export function accountPasskeyTokenTtlMs(scope: AccountPasskeyChallengeScope): number {
+  return scope === 'CreateCredential' ? ACCOUNT_PASSKEY_CREATE_TOKEN_TTL_MS : ACCOUNT_PASSKEY_TOKEN_TTL_MS;
+}
+
+export async function createAccountPasskeyToken(
+  env: Env,
+  input: {
+    scope: AccountPasskeyChallengeScope;
+    challenge: string;
+    userId?: string | null;
+    rpId: string;
+    ttlMs?: number;
+  }
+): Promise<string> {
+  const now = Date.now();
+  const payload: AccountPasskeyTokenPayload = {
+    typ: ACCOUNT_PASSKEY_TOKEN_TYPE,
+    scope: input.scope,
+    challenge: input.challenge,
+    userId: input.userId ?? null,
+    rpId: input.rpId,
+    iat: now,
+    exp: now + (input.ttlMs ?? accountPasskeyTokenTtlMs(input.scope)),
+  };
+  const header = { alg: 'HS256', typ: 'JWT' };
+  const data = `${encodeJson(header)}.${encodeJson(payload)}`;
+  const signature = bytesToBase64Url(await hmacSha256(env.JWT_SECRET, data));
+  return `${data}.${signature}`;
+}
+
+export async function verifyAccountPasskeyToken(
+  env: Env,
+  token: string,
+  scope: AccountPasskeyChallengeScope
+): Promise<AccountPasskeyTokenPayload | null> {
+  try {
+    const parts = String(token || '').split('.');
+    if (parts.length !== 3) return null;
+    const data = `${parts[0]}.${parts[1]}`;
+    const expected = await hmacSha256(env.JWT_SECRET, data);
+    const actual = base64UrlToBytes(parts[2]);
+    if (actual.length !== expected.length) return null;
+    let diff = 0;
+    for (let i = 0; i < actual.length; i += 1) diff |= actual[i] ^ expected[i];
+    if (diff !== 0) return null;
+
+    const payload = decodeJson<AccountPasskeyTokenPayload>(parts[1]);
+    if (!payload || payload.typ !== ACCOUNT_PASSKEY_TOKEN_TYPE || payload.scope !== scope) return null;
+    if (!payload.challenge || !payload.rpId || !Number.isFinite(payload.exp)) return null;
+    if (payload.exp < Date.now()) return null;
+    return payload;
+  } catch {
+    return null;
+  }
+}
+
+export function getAccountPasskeyRpConfig(request: Request, env: Env): { rpId: string; rpName: string; origins: string[] } {
+  const url = new URL(request.url);
+  const configuredRpId = String(env.WEBAUTHN_RP_ID || '').trim();
+  const rpId = configuredRpId || url.hostname;
+  const rpName = String(env.WEBAUTHN_RP_NAME || '').trim() || DEFAULT_RP_NAME;
+  const configuredOrigins = String(env.WEBAUTHN_ALLOWED_ORIGINS || '')
+    .split(',')
+    .map((origin) => origin.trim())
+    .filter(Boolean);
+  const origins = new Set<string>([url.origin, ...configuredOrigins]);
+  const requestOrigin = request.headers.get('Origin');
+  if (
+    requestOrigin
+    && (
+      requestOrigin.startsWith('chrome-extension://')
+      || requestOrigin.startsWith('moz-extension://')
+      || requestOrigin.startsWith('safari-web-extension://')
+    )
+  ) {
+    origins.add(requestOrigin);
+  }
+  return { rpId, rpName, origins: Array.from(origins) };
+}
+
+export function userIdToWebAuthnUserId(userId: string): Uint8Array {
+  return textBytes(userId);
+}
+
+export function userHandleToUserId(userHandle: string | undefined): string | null {
+  if (!userHandle) return null;
+  try {
+    const decoded = new TextDecoder().decode(base64UrlToBytes(userHandle));
+    return decoded.trim() || null;
+  } catch {
+    return null;
+  }
+}
+
+export function accountPasskeyPrfStatus(credential: Pick<AccountPasskeyCredential, 'supportsPrf' | 'encryptedUserKey' | 'encryptedPublicKey' | 'encryptedPrivateKey'>): AccountPasskeyPrfStatus {
+  if (!credential.supportsPrf) return 2;
+  if (credential.encryptedUserKey && credential.encryptedPublicKey && credential.encryptedPrivateKey) return 0;
+  return 1;
+}
+
+export function buildWebAuthnPrfOption(
+  credential: AccountPasskeyCredential
+): WebAuthnPrfDecryptionOption | null {
+  if (accountPasskeyPrfStatus(credential) !== 0) return null;
+  return {
+    EncryptedPrivateKey: credential.encryptedPrivateKey!,
+    EncryptedUserKey: credential.encryptedUserKey!,
+    CredentialId: credential.credentialId,
+    Transports: credential.transports || [],
+    Object: 'webAuthnPrfDecryptionOption',
+  };
+}
+
+export function accountPasskeyCredentialToResponse(credential: AccountPasskeyCredential): Record<string, unknown> {
+  const prfStatus = accountPasskeyPrfStatus(credential);
+  return {
+    Id: credential.id,
+    id: credential.id,
+    Name: credential.name,
+    name: credential.name,
+    PrfStatus: prfStatus,
+    prfStatus,
+    EncryptedPublicKey: credential.encryptedPublicKey,
+    encryptedPublicKey: credential.encryptedPublicKey,
+    EncryptedUserKey: credential.encryptedUserKey,
+    encryptedUserKey: credential.encryptedUserKey,
+    CreationDate: credential.createdAt,
+    RevisionDate: credential.updatedAt,
+    Object: 'webauthnCredential',
+    object: 'webauthnCredential',
+  };
+}
+
+export function toSimpleWebAuthnCredential(credential: AccountPasskeyCredential): WebAuthnCredential {
+  return {
+    id: credential.credentialId,
+    publicKey: Uint8Array.from(base64UrlToBytes(credential.publicKey)),
+    counter: credential.counter,
+    transports: (credential.transports || undefined) as AuthenticatorTransportFuture[] | undefined,
+  };
+}
+
+export function normalizeRegistrationResponse(raw: unknown): RegistrationResponseJSON | null {
+  const input = raw && typeof raw === 'object' ? raw as Record<string, any> : null;
+  const response = input?.response && typeof input.response === 'object' ? input.response as Record<string, any> : null;
+  if (!input || !response) return null;
+  const clientDataJSON = response.clientDataJSON || response.clientDataJson;
+  if (!input.id || !input.rawId || !clientDataJSON || !response.attestationObject) return null;
+  return {
+    id: String(input.id),
+    rawId: String(input.rawId),
+    type: 'public-key',
+    authenticatorAttachment: input.authenticatorAttachment,
+    clientExtensionResults: input.clientExtensionResults || input.extensions || {},
+    response: {
+      attestationObject: String(response.attestationObject),
+      clientDataJSON: String(clientDataJSON),
+      authenticatorData: response.authenticatorData ? String(response.authenticatorData) : undefined,
+      transports: Array.isArray(response.transports) ? response.transports.map(String) as AuthenticatorTransportFuture[] : undefined,
+      publicKey: response.publicKey ? String(response.publicKey) : undefined,
+      publicKeyAlgorithm: typeof response.publicKeyAlgorithm === 'number' ? response.publicKeyAlgorithm : undefined,
+    },
+  };
+}
+
+export function normalizeAuthenticationResponse(raw: unknown): AuthenticationResponseJSON | null {
+  const input = raw && typeof raw === 'object' ? raw as Record<string, any> : null;
+  const response = input?.response && typeof input.response === 'object' ? input.response as Record<string, any> : null;
+  if (!input || !response) return null;
+  const clientDataJSON = response.clientDataJSON || response.clientDataJson;
+  if (!input.id || !input.rawId || !clientDataJSON || !response.authenticatorData || !response.signature) return null;
+  return {
+    id: String(input.id),
+    rawId: String(input.rawId),
+    type: 'public-key',
+    authenticatorAttachment: input.authenticatorAttachment,
+    clientExtensionResults: input.clientExtensionResults || input.extensions || {},
+    response: {
+      authenticatorData: String(response.authenticatorData),
+      clientDataJSON: String(clientDataJSON),
+      signature: String(response.signature),
+      userHandle: response.userHandle ? String(response.userHandle) : undefined,
+    },
+  };
+}
+
+export function normalizeAccountPasskeyName(value: unknown): string {
+  const normalized = String(value || '').trim();
+  return (normalized || 'Account passkey').slice(0, 128);
+}
+
+export function normalizeTransports(value: unknown): string[] | null {
+  if (!Array.isArray(value)) return null;
+  const transports = value.map((item) => String(item || '').trim()).filter(Boolean);
+  return transports.length ? transports.slice(0, 12) : null;
+}
+
+export function isSerializedEncString(value: unknown): value is string {
+  const text = String(value || '').trim();
+  if (!text) return false;
+  const parts = text.split('.');
+  if (parts.length !== 2) return false;
+  const type = Number(parts[0]);
+  const bodyParts = parts[1].split('|');
+  if (type === 2) return bodyParts.length === 3 && bodyParts.every(Boolean);
+  if (type === 3 || type === 4) return bodyParts.length === 1 && !!bodyParts[0];
+  if (type === 5 || type === 6) return bodyParts.length === 2 && bodyParts.every(Boolean);
+  return false;
+}

src/utils/device.ts

@@ -0,0 +1,78 @@
+const DEFAULT_DEVICE_NAME = 'Unknown device';
+const DEFAULT_DEVICE_TYPE = 14;
+
+function decodeBase64UrlUtf8(value: string): string | null {
+  try {
+    const normalized = value.replace(/-/g, '+').replace(/_/g, '/');
+    const padding = normalized.length % 4;
+    const padded = padding === 0 ? normalized : normalized + '='.repeat(4 - padding);
+    const binary = atob(padded);
+    const bytes = new Uint8Array(binary.length);
+    for (let i = 0; i < binary.length; i++) {
+      bytes[i] = binary.charCodeAt(i);
+    }
+    return new TextDecoder().decode(bytes);
+  } catch {
+    return null;
+  }
+}
+
+function normalizeDeviceIdentifier(value: string | undefined | null): string | null {
+  if (!value) return null;
+  const normalized = String(value).trim();
+  if (!normalized) return null;
+  return normalized.slice(0, 128);
+}
+
+function normalizeDeviceName(value: string | undefined | null): string {
+  const normalized = String(value || '').trim();
+  if (!normalized) return DEFAULT_DEVICE_NAME;
+  return normalized.slice(0, 128);
+}
+
+function parseDeviceType(value: string | number | undefined | null): number {
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    return Math.max(0, Math.floor(value));
+  }
+  const parsed = Number.parseInt(String(value || ''), 10);
+  if (Number.isFinite(parsed) && parsed >= 0) return parsed;
+  return DEFAULT_DEVICE_TYPE;
+}
+
+export interface AuthRequestDeviceInfo {
+  deviceIdentifier: string | null;
+  deviceName: string;
+  deviceType: number;
+}
+
+export function readAuthRequestDeviceInfo(
+  body: Record<string, string | undefined>,
+  request: Request
+): AuthRequestDeviceInfo {
+  const bodyIdentifier = body.deviceIdentifier || body.device_identifier;
+  const headerIdentifier = request.headers.get('X-Device-Identifier') || undefined;
+  const bodyName = body.deviceName || body.device_name;
+  const headerName = request.headers.get('X-Device-Name') || undefined;
+  const bodyType = body.deviceType || body.device_type;
+  const headerType = request.headers.get('Device-Type') || undefined;
+
+  return {
+    deviceIdentifier: normalizeDeviceIdentifier(bodyIdentifier || headerIdentifier),
+    deviceName: normalizeDeviceName(bodyName || headerName),
+    deviceType: parseDeviceType(bodyType || headerType),
+  };
+}
+
+export function readKnownDeviceProbe(request: Request): { email: string | null; deviceIdentifier: string | null } {
+  const encodedEmail = request.headers.get('X-Request-Email') || '';
+  const decodedEmail = decodeBase64UrlUtf8(encodedEmail);
+  const fallbackRawEmail = request.headers.get('X-Request-Email');
+  const email = (decodedEmail || fallbackRawEmail || '').trim().toLowerCase() || null;
+  const deviceIdentifier = normalizeDeviceIdentifier(request.headers.get('X-Device-Identifier'));
+  return { email, deviceIdentifier };
+}
+
+export function readActingDeviceIdentifier(request: Request): string | null {
+  return normalizeDeviceIdentifier(request.headers.get('X-NodeWarden-Acting-Device-Id'));
+}
+

src/utils/direct-upload.ts

@@ -0,0 +1,104 @@
+import { LIMITS } from '../config/limits';
+import { DEFAULT_DEV_SECRET, Env } from '../types';
+import { errorResponse } from './response';
+
+export interface DirectUploadPayload {
+  body: ReadableStream;
+  contentType: string;
+  size: number;
+}
+
+interface ParseDirectUploadOptions {
+  expectedSize?: number | null;
+  expectedFileName?: string | null;
+  maxFileSize: number;
+  tooLargeMessage: string;
+  missingBodyMessage?: string;
+  contentLengthRequiredMessage?: string;
+  sizeMismatchMessage?: string;
+  fileNameMismatchMessage?: string;
+}
+
+export function buildDirectUploadUrl(request: Request, path: string, token: string): string {
+  const version = '2023-11-03';
+  const expiresAt = '2099-12-31T23:59:59Z';
+  const origin = new URL(request.url).origin;
+  return `${origin}${path}?sv=${encodeURIComponent(version)}&se=${encodeURIComponent(expiresAt)}&token=${encodeURIComponent(token)}`;
+}
+
+export function getSafeJwtSecret(env: Env): string | null {
+  const secret = (env.JWT_SECRET || '').trim();
+  if (!secret || secret.length < LIMITS.auth.jwtSecretMinLength || secret === DEFAULT_DEV_SECRET) {
+    return null;
+  }
+  return secret;
+}
+
+function parseContentLength(request: Request): number | null {
+  const raw = request.headers.get('content-length');
+  if (!raw) return null;
+  const value = Number(raw);
+  if (!Number.isFinite(value) || value < 0) return null;
+  return Math.floor(value);
+}
+
+export async function parseDirectUploadPayload(
+  request: Request,
+  options: ParseDirectUploadOptions
+): Promise<DirectUploadPayload | Response> {
+  const {
+    expectedSize = null,
+    expectedFileName = null,
+    maxFileSize,
+    tooLargeMessage,
+    missingBodyMessage = 'No file uploaded',
+    contentLengthRequiredMessage = 'Content-Length is required for direct uploads',
+    sizeMismatchMessage,
+    fileNameMismatchMessage,
+  } = options;
+  const contentType = request.headers.get('content-type') || '';
+
+  if (contentType.includes('multipart/form-data')) {
+    const formData = await request.formData();
+    const file = formData.get('data') as File | null;
+    if (!file) {
+      return errorResponse(missingBodyMessage, 400);
+    }
+    if (file.size > maxFileSize) {
+      return errorResponse(tooLargeMessage, 413);
+    }
+    if (expectedFileName && file.name !== expectedFileName) {
+      return errorResponse(fileNameMismatchMessage || 'File name does not match.', 400);
+    }
+    if (expectedSize !== null && expectedSize !== undefined && file.size !== expectedSize) {
+      return errorResponse(sizeMismatchMessage || 'File size does not match.', 400);
+    }
+    return {
+      body: file.stream(),
+      contentType: file.type || 'application/octet-stream',
+      size: file.size,
+    };
+  }
+
+  if (!request.body) {
+    return errorResponse(missingBodyMessage, 400);
+  }
+
+  const declaredSize = parseContentLength(request);
+  const uploadSize = declaredSize ?? (expectedSize && expectedSize > 0 ? expectedSize : null);
+  if (uploadSize === null) {
+    return errorResponse(contentLengthRequiredMessage, 400);
+  }
+  if (uploadSize > maxFileSize) {
+    return errorResponse(tooLargeMessage, 413);
+  }
+  if (expectedSize !== null && expectedSize !== undefined && uploadSize !== expectedSize) {
+    return errorResponse(sizeMismatchMessage || 'File size does not match.', 400);
+  }
+
+  return {
+    body: request.body,
+    contentType: contentType || 'application/octet-stream',
+    size: uploadSize,
+  };
+}

src/utils/jwt.ts

@@ -1,4 +1,7 @@
 import { JWTPayload } from '../types';
+import { LIMITS } from '../config/limits';
+
+const hmacKeyCache = new Map<string, Promise<CryptoKey>>();
 
 // Base64 URL encode
 function base64UrlEncode(data: Uint8Array): string {
@@ -18,8 +21,25 @@ function base64UrlDecode(str: string): Uint8Array {
   return bytes;
 }
 
+function getHmacKey(secret: string): Promise<CryptoKey> {
+  const cacheKey = secret;
+  let cached = hmacKeyCache.get(cacheKey);
+  if (cached) return cached;
+
+  const encoder = new TextEncoder();
+  cached = crypto.subtle.importKey(
+    'raw',
+    encoder.encode(secret),
+    { name: 'HMAC', hash: 'SHA-256' },
+    false,
+    ['sign', 'verify']
+  );
+  hmacKeyCache.set(cacheKey, cached);
+  return cached;
+}
+
 // Create JWT
-export async function createJWT(payload: Omit<JWTPayload, 'iat' | 'exp' | 'iss' | 'premium' | 'email_verified' | 'amr'>, secret: string, expiresIn: number = 7200): Promise<string> {
+export async function createJWT(payload: Omit<JWTPayload, 'iat' | 'exp' | 'iss' | 'premium' | 'email_verified' | 'amr'>, secret: string, expiresIn: number = LIMITS.auth.accessTokenTtlSeconds): Promise<string> {
   const header = { alg: 'HS256', typ: 'JWT' };
   const now = Math.floor(Date.now() / 1000);
   
@@ -39,13 +59,7 @@ export async function createJWT(payload: Omit<JWTPayload, 'iat' | 'exp' | 'iss'
   
   const data = `${headerB64}.${payloadB64}`;
   
-  const key = await crypto.subtle.importKey(
-    'raw',
-    encoder.encode(secret),
-    { name: 'HMAC', hash: 'SHA-256' },
-    false,
-    ['sign']
-  );
+  const key = await getHmacKey(secret);
   
   const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
   const signatureB64 = base64UrlEncode(new Uint8Array(signature));
@@ -62,13 +76,7 @@ export async function verifyJWT(token: string, secret: string): Promise<JWTPaylo
     const [headerB64, payloadB64, signatureB64] = parts;
     const encoder = new TextEncoder();
     
-    const key = await crypto.subtle.importKey(
-      'raw',
-      encoder.encode(secret),
-      { name: 'HMAC', hash: 'SHA-256' },
-      false,
-      ['verify']
-    );
+    const key = await getHmacKey(secret);
     
     const data = `${headerB64}.${payloadB64}`;
     const signature = base64UrlDecode(signatureB64);
@@ -90,13 +98,21 @@ export async function verifyJWT(token: string, secret: string): Promise<JWTPaylo
 
 // Create refresh token (simple random string)
 export function createRefreshToken(): string {
-  const bytes = new Uint8Array(32);
+  const bytes = new Uint8Array(LIMITS.auth.refreshTokenRandomBytes);
   crypto.getRandomValues(bytes);
   return base64UrlEncode(bytes);
 }
 
 // File download token payload
 export interface FileDownloadClaims {
+  cipherId: string;
+  attachmentId: string;
+  jti: string;
+  exp: number;
+}
+
+export interface AttachmentUploadClaims {
+  userId: string;
   cipherId: string;
   attachmentId: string;
   exp: number;
@@ -114,7 +130,8 @@ export async function createFileDownloadToken(
   const payload: FileDownloadClaims = {
     cipherId,
     attachmentId,
-    exp: now + 300, // 5 minutes
+    jti: createRefreshToken(),
+    exp: now + LIMITS.auth.fileDownloadTokenTtlSeconds, // 5 minutes
   };
 
   const encoder = new TextEncoder();
@@ -123,13 +140,7 @@ export async function createFileDownloadToken(
   
   const data = `${headerB64}.${payloadB64}`;
   
-  const key = await crypto.subtle.importKey(
-    'raw',
-    encoder.encode(secret),
-    { name: 'HMAC', hash: 'SHA-256' },
-    false,
-    ['sign']
-  );
+  const key = await getHmacKey(secret);
   
   const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
   const signatureB64 = base64UrlEncode(new Uint8Array(signature));
@@ -149,13 +160,7 @@ export async function verifyFileDownloadToken(
     const [headerB64, payloadB64, signatureB64] = parts;
     const encoder = new TextEncoder();
     
-    const key = await crypto.subtle.importKey(
-      'raw',
-      encoder.encode(secret),
-      { name: 'HMAC', hash: 'SHA-256' },
-      false,
-      ['verify']
-    );
+    const key = await getHmacKey(secret);
     
     const data = `${headerB64}.${payloadB64}`;
     const signature = base64UrlDecode(signatureB64);
@@ -174,3 +179,244 @@ export async function verifyFileDownloadToken(
     return null;
   }
 }
+
+export async function createAttachmentUploadToken(
+  userId: string,
+  cipherId: string,
+  attachmentId: string,
+  secret: string
+): Promise<string> {
+  const header = { alg: 'HS256', typ: 'JWT' };
+  const now = Math.floor(Date.now() / 1000);
+  const payload: AttachmentUploadClaims = {
+    userId,
+    cipherId,
+    attachmentId,
+    exp: now + LIMITS.auth.fileDownloadTokenTtlSeconds,
+  };
+
+  const encoder = new TextEncoder();
+  const headerB64 = base64UrlEncode(encoder.encode(JSON.stringify(header)));
+  const payloadB64 = base64UrlEncode(encoder.encode(JSON.stringify(payload)));
+  const data = `${headerB64}.${payloadB64}`;
+
+  const key = await getHmacKey(secret);
+
+  const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
+  const signatureB64 = base64UrlEncode(new Uint8Array(signature));
+  return `${data}.${signatureB64}`;
+}
+
+export async function verifyAttachmentUploadToken(
+  token: string,
+  secret: string
+): Promise<AttachmentUploadClaims | null> {
+  try {
+    const parts = token.split('.');
+    if (parts.length !== 3) return null;
+
+    const [headerB64, payloadB64, signatureB64] = parts;
+    const encoder = new TextEncoder();
+
+    const key = await getHmacKey(secret);
+
+    const data = `${headerB64}.${payloadB64}`;
+    const signature = base64UrlDecode(signatureB64);
+    const valid = await crypto.subtle.verify('HMAC', key, signature, encoder.encode(data));
+    if (!valid) return null;
+
+    const payload: AttachmentUploadClaims = JSON.parse(new TextDecoder().decode(base64UrlDecode(payloadB64)));
+    const now = Math.floor(Date.now() / 1000);
+    if (payload.exp < now) return null;
+    if (!payload.userId || !payload.cipherId || !payload.attachmentId) return null;
+    return payload;
+  } catch {
+    return null;
+  }
+}
+
+export interface SendFileDownloadClaims {
+  sendId: string;
+  fileId: string;
+  jti: string;
+  exp: number;
+}
+
+export interface SendFileUploadClaims {
+  userId: string;
+  sendId: string;
+  fileId: string;
+  exp: number;
+}
+
+export async function createSendFileDownloadToken(
+  sendId: string,
+  fileId: string,
+  secret: string
+): Promise<string> {
+  const header = { alg: 'HS256', typ: 'JWT' };
+  const now = Math.floor(Date.now() / 1000);
+  const payload: SendFileDownloadClaims = {
+    sendId,
+    fileId,
+    jti: createRefreshToken(),
+    exp: now + LIMITS.auth.fileDownloadTokenTtlSeconds,
+  };
+
+  const encoder = new TextEncoder();
+  const headerB64 = base64UrlEncode(encoder.encode(JSON.stringify(header)));
+  const payloadB64 = base64UrlEncode(encoder.encode(JSON.stringify(payload)));
+  const data = `${headerB64}.${payloadB64}`;
+
+  const key = await getHmacKey(secret);
+
+  const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
+  const signatureB64 = base64UrlEncode(new Uint8Array(signature));
+  return `${data}.${signatureB64}`;
+}
+
+export async function verifySendFileDownloadToken(
+  token: string,
+  secret: string
+): Promise<SendFileDownloadClaims | null> {
+  try {
+    const parts = token.split('.');
+    if (parts.length !== 3) return null;
+
+    const [headerB64, payloadB64, signatureB64] = parts;
+    const encoder = new TextEncoder();
+
+    const key = await getHmacKey(secret);
+
+    const data = `${headerB64}.${payloadB64}`;
+    const signature = base64UrlDecode(signatureB64);
+    const valid = await crypto.subtle.verify('HMAC', key, signature, encoder.encode(data));
+    if (!valid) return null;
+
+    const payload: SendFileDownloadClaims = JSON.parse(new TextDecoder().decode(base64UrlDecode(payloadB64)));
+    if (
+      typeof payload.sendId !== 'string' ||
+      typeof payload.fileId !== 'string' ||
+      typeof payload.jti !== 'string' ||
+      !payload.jti ||
+      typeof payload.exp !== 'number'
+    ) {
+      return null;
+    }
+    const now = Math.floor(Date.now() / 1000);
+    if (payload.exp < now) return null;
+
+    return payload;
+  } catch {
+    return null;
+  }
+}
+
+export async function createSendFileUploadToken(
+  userId: string,
+  sendId: string,
+  fileId: string,
+  secret: string
+): Promise<string> {
+  const header = { alg: 'HS256', typ: 'JWT' };
+  const now = Math.floor(Date.now() / 1000);
+  const payload: SendFileUploadClaims = {
+    userId,
+    sendId,
+    fileId,
+    exp: now + LIMITS.auth.fileDownloadTokenTtlSeconds,
+  };
+
+  const encoder = new TextEncoder();
+  const headerB64 = base64UrlEncode(encoder.encode(JSON.stringify(header)));
+  const payloadB64 = base64UrlEncode(encoder.encode(JSON.stringify(payload)));
+  const data = `${headerB64}.${payloadB64}`;
+
+  const key = await getHmacKey(secret);
+
+  const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
+  const signatureB64 = base64UrlEncode(new Uint8Array(signature));
+  return `${data}.${signatureB64}`;
+}
+
+export async function verifySendFileUploadToken(
+  token: string,
+  secret: string
+): Promise<SendFileUploadClaims | null> {
+  try {
+    const parts = token.split('.');
+    if (parts.length !== 3) return null;
+
+    const [headerB64, payloadB64, signatureB64] = parts;
+    const encoder = new TextEncoder();
+
+    const key = await getHmacKey(secret);
+
+    const data = `${headerB64}.${payloadB64}`;
+    const signature = base64UrlDecode(signatureB64);
+    const valid = await crypto.subtle.verify('HMAC', key, signature, encoder.encode(data));
+    if (!valid) return null;
+
+    const payload: SendFileUploadClaims = JSON.parse(new TextDecoder().decode(base64UrlDecode(payloadB64)));
+    const now = Math.floor(Date.now() / 1000);
+    if (payload.exp < now) return null;
+    if (!payload.userId || !payload.sendId || !payload.fileId) return null;
+    return payload;
+  } catch {
+    return null;
+  }
+}
+
+export interface SendAccessTokenClaims {
+  sub: string; // send id
+  typ: 'send_access';
+  iat: number;
+  exp: number;
+}
+
+export async function createSendAccessToken(sendId: string, secret: string): Promise<string> {
+  const header = { alg: 'HS256', typ: 'JWT' };
+  const now = Math.floor(Date.now() / 1000);
+  const payload: SendAccessTokenClaims = {
+    sub: sendId,
+    typ: 'send_access',
+    iat: now,
+    exp: now + LIMITS.auth.sendAccessTokenTtlSeconds,
+  };
+
+  const encoder = new TextEncoder();
+  const headerB64 = base64UrlEncode(encoder.encode(JSON.stringify(header)));
+  const payloadB64 = base64UrlEncode(encoder.encode(JSON.stringify(payload)));
+  const data = `${headerB64}.${payloadB64}`;
+
+  const key = await getHmacKey(secret);
+  const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(data));
+  const signatureB64 = base64UrlEncode(new Uint8Array(signature));
+  return `${data}.${signatureB64}`;
+}
+
+export async function verifySendAccessToken(token: string, secret: string): Promise<SendAccessTokenClaims | null> {
+  try {
+    const parts = token.split('.');
+    if (parts.length !== 3) return null;
+
+    const [headerB64, payloadB64, signatureB64] = parts;
+    const encoder = new TextEncoder();
+
+    const key = await getHmacKey(secret);
+
+    const data = `${headerB64}.${payloadB64}`;
+    const signature = base64UrlDecode(signatureB64);
+    const valid = await crypto.subtle.verify('HMAC', key, signature, encoder.encode(data));
+    if (!valid) return null;
+
+    const payload: SendAccessTokenClaims = JSON.parse(new TextDecoder().decode(base64UrlDecode(payloadB64)));
+    const now = Math.floor(Date.now() / 1000);
+    if (payload.exp < now) return null;
+    if (payload.typ !== 'send_access') return null;
+    if (!payload.sub) return null;
+    return payload;
+  } catch {
+    return null;
+  }
+}

src/utils/pagination.ts

@@ -0,0 +1,38 @@
+import { LIMITS } from '../config/limits';
+
+const MAX_PAGE_SIZE = LIMITS.pagination.maxPageSize;
+
+export interface PaginationRequest {
+  limit: number;
+  offset: number;
+}
+
+export function parsePagination(url: URL): PaginationRequest | null {
+  const pageSizeRaw = url.searchParams.get('pageSize');
+  const continuationToken = url.searchParams.get('continuationToken');
+  if (!pageSizeRaw && !continuationToken) return null;
+
+  const pageSize = pageSizeRaw ? Number(pageSizeRaw) : LIMITS.pagination.defaultPageSize;
+  if (!Number.isInteger(pageSize) || pageSize <= 0) return null;
+
+  const limit = Math.min(pageSize, MAX_PAGE_SIZE);
+  const offset = decodeContinuationToken(continuationToken);
+
+  return { limit, offset };
+}
+
+export function encodeContinuationToken(offset: number): string {
+  return btoa(String(offset));
+}
+
+export function decodeContinuationToken(token: string | null): number {
+  if (!token) return 0;
+  try {
+    const decoded = atob(token);
+    const offset = Number(decoded);
+    if (!Number.isInteger(offset) || offset < 0) return 0;
+    return offset;
+  } catch {
+    return 0;
+  }
+}

src/utils/passkey.ts

@@ -0,0 +1,30 @@
+export function bytesToBase64Url(bytes: Uint8Array): string {
+  let binary = '';
+  for (const b of bytes) binary += String.fromCharCode(b);
+  return btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/g, '');
+}
+
+export function base64UrlToBytes(input: string): Uint8Array {
+  const normalized = String(input || '').replace(/-/g, '+').replace(/_/g, '/');
+  const padded = normalized + '='.repeat((4 - (normalized.length % 4 || 4)) % 4);
+  const binary = atob(padded);
+  const out = new Uint8Array(binary.length);
+  for (let i = 0; i < binary.length; i += 1) out[i] = binary.charCodeAt(i);
+  return out;
+}
+
+export function randomChallenge(size: number = 32): string {
+  return bytesToBase64Url(crypto.getRandomValues(new Uint8Array(size)));
+}
+
+export function parseClientDataJSON(base64Url: string): { type?: string; challenge?: string; origin?: string } | null {
+  try {
+    const raw = base64UrlToBytes(base64Url);
+    const text = new TextDecoder().decode(raw);
+    const parsed = JSON.parse(text) as { type?: string; challenge?: string; origin?: string };
+    if (!parsed || typeof parsed !== 'object') return null;
+    return parsed;
+  } catch {
+    return null;
+  }
+}

src/utils/recovery-code.ts

@@ -0,0 +1,36 @@
+const RECOVERY_ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
+const RECOVERY_ALPHABET_LENGTH = RECOVERY_ALPHABET.length;
+const RECOVERY_MAX_UNBIASED_BYTE = Math.floor(256 / RECOVERY_ALPHABET_LENGTH) * RECOVERY_ALPHABET_LENGTH;
+
+function normalizeRecoveryCode(raw: string): string {
+  return String(raw || '').toUpperCase().replace(/[^A-Z2-7]/g, '');
+}
+
+function formatRecoveryCode(compact: string): string {
+  return compact.replace(/(.{4})/g, '$1 ').trim();
+}
+
+export function createRecoveryCode(): string {
+  let compact = '';
+  while (compact.length < 32) {
+    const bytes = crypto.getRandomValues(new Uint8Array(32));
+    for (const b of bytes) {
+      if (b >= RECOVERY_MAX_UNBIASED_BYTE) continue;
+      compact += RECOVERY_ALPHABET[b % RECOVERY_ALPHABET_LENGTH];
+      if (compact.length >= 32) break;
+    }
+  }
+  return formatRecoveryCode(compact.slice(0, 32));
+}
+
+export function recoveryCodeEquals(input: string, storedCode: string | null | undefined): boolean {
+  if (!storedCode) return false;
+  const a = new TextEncoder().encode(normalizeRecoveryCode(input));
+  const b = new TextEncoder().encode(normalizeRecoveryCode(storedCode));
+  if (a.length !== b.length) return false;
+  let diff = 0;
+  for (let i = 0; i < a.length; i++) {
+    diff |= a[i] ^ b[i];
+  }
+  return diff === 0;
+}

src/utils/response.ts

@@ -1,10 +1,119 @@
+import { LIMITS } from '../config/limits';
+
+const CORS_METHODS = 'GET, POST, PUT, DELETE, PATCH, OPTIONS';
+const DEFAULT_CORS_HEADERS = [
+  'Content-Type',
+  'Authorization',
+  'Accept',
+  'Device-Type',
+  'Device-Identifier',
+  'Device-Name',
+  'Bitwarden-Client-Name',
+  'Bitwarden-Client-Version',
+  'Bitwarden-Package-Type',
+  'Is-Prerelease',
+  'X-Request-Email',
+  'X-Device-Identifier',
+  'X-Device-Name',
+  'X-NodeWarden-Web-Session',
+];
+
+function isExtensionOrigin(origin: string): boolean {
+  return (
+    origin.startsWith('chrome-extension://')
+    || origin.startsWith('moz-extension://')
+    || origin.startsWith('safari-web-extension://')
+  );
+}
+
+function isWildcardCorsPath(path: string): boolean {
+  return (
+    path.startsWith('/icons/')
+    || path === '/config'
+    || path === '/api/config'
+    || path === '/api/version'
+  );
+}
+
+function getCorsPolicy(request: Request): { allowOrigin: string | null; allowCredentials: boolean } {
+  const url = new URL(request.url);
+  const origin = request.headers.get('Origin');
+  if (!origin) {
+    return isWildcardCorsPath(url.pathname)
+      ? { allowOrigin: '*', allowCredentials: false }
+      : { allowOrigin: null, allowCredentials: false };
+  }
+  if (origin === url.origin) {
+    return { allowOrigin: origin, allowCredentials: true };
+  }
+  if (isExtensionOrigin(origin)) {
+    return { allowOrigin: origin, allowCredentials: true };
+  }
+  if (isWildcardCorsPath(url.pathname)) {
+    return { allowOrigin: '*', allowCredentials: false };
+  }
+  return { allowOrigin: null, allowCredentials: false };
+}
+
+function buildCorsHeaders(request: Request): Record<string, string> {
+  const requestedHeaders = String(request.headers.get('Access-Control-Request-Headers') || '')
+    .split(',')
+    .map((value) => value.trim())
+    .filter(Boolean);
+  const allowHeaders = Array.from(new Set([...DEFAULT_CORS_HEADERS, ...requestedHeaders]));
+
+  const headers: Record<string, string> = {
+    'Access-Control-Allow-Methods': CORS_METHODS,
+    'Access-Control-Allow-Headers': allowHeaders.join(', '),
+    'Access-Control-Expose-Headers': '*',
+    'Access-Control-Max-Age': String(LIMITS.cors.preflightMaxAgeSeconds),
+  };
+
+  const corsPolicy = getCorsPolicy(request);
+  if (corsPolicy.allowOrigin) {
+    headers['Access-Control-Allow-Origin'] = corsPolicy.allowOrigin;
+    if (corsPolicy.allowCredentials) {
+      headers['Access-Control-Allow-Credentials'] = 'true';
+    }
+    headers['Vary'] = 'Origin, Access-Control-Request-Headers';
+  }
+
+  return headers;
+}
+
+export function applyCors(
+  request: Request,
+  response: Response
+): Response {
+  // WebSocket upgrade responses must be returned untouched.
+  const webSocket = (response as Response & { webSocket?: unknown }).webSocket;
+  if (response.status === 101 || webSocket) {
+    return response;
+  }
+
+  const headers = new Headers(response.headers);
+  const corsHeaders = buildCorsHeaders(request);
+  for (const [k, v] of Object.entries(corsHeaders)) {
+    headers.set(k, v);
+  }
+  // Security headers applied to every response.
+  headers.set('X-Frame-Options', 'DENY');
+  headers.set('X-Content-Type-Options', 'nosniff');
+  headers.set('Referrer-Policy', 'strict-origin-when-cross-origin');
+  headers.set('Content-Security-Policy', "frame-ancestors 'none'; img-src 'self' data:");
+  return new Response(response.body, {
+    status: response.status,
+    statusText: response.statusText,
+    headers,
+  });
+}
+
 // JSON response helper
 export function jsonResponse(data: any, status: number = 200, headers: Record<string, string> = {}): Response {
   return new Response(JSON.stringify(data), {
     status,
     headers: {
       'Content-Type': 'application/json',
-      ...getCorsHeaders(),
       ...headers,
     },
   });
@@ -40,21 +149,11 @@ export function identityErrorResponse(message: string, error: string = 'invalid_
   );
 }
 
-// CORS headers
-export function getCorsHeaders(): Record<string, string> {
-  return {
-    'Access-Control-Allow-Origin': '*',
-    'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
-    'Access-Control-Allow-Headers': 'Content-Type, Authorization, Accept, Device-Type, Bitwarden-Client-Name, Bitwarden-Client-Version',
-    'Access-Control-Max-Age': '86400',
-  };
-}
-
 // Handle CORS preflight
-export function handleCors(): Response {
+export function handleCors(request: Request): Response {
   return new Response(null, {
     status: 204,
-    headers: getCorsHeaders(),
+    headers: buildCorsHeaders(request),
   });
 }
 
@@ -64,7 +163,6 @@ export function htmlResponse(html: string, status: number = 200): Response {
     status,
     headers: {
       'Content-Type': 'text/html; charset=utf-8',
-      ...getCorsHeaders(),
     },
   });
 }

src/utils/totp.ts

@@ -0,0 +1,98 @@
+const TOTP_STEP_SECONDS = 30;
+const TOTP_DIGITS = 6;
+const TOTP_WINDOW = 1; // allow previous/current/next step for small clock drift
+
+function normalizeBase32(input: string): string {
+  const raw = String(input || '').toUpperCase();
+  let out = '';
+  for (const char of raw) {
+    if (char === ' ' || char === '\t' || char === '\n' || char === '\r' || char === '-') continue;
+    out += char;
+  }
+  while (out.endsWith('=')) {
+    out = out.slice(0, -1);
+  }
+  return out;
+}
+
+function base32Decode(input: string): Uint8Array | null {
+  const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
+  const normalized = normalizeBase32(input);
+  if (!normalized) return null;
+
+  let bits = 0;
+  let value = 0;
+  const output: number[] = [];
+
+  for (const char of normalized) {
+    const idx = alphabet.indexOf(char);
+    if (idx === -1) return null;
+    value = (value << 5) | idx;
+    bits += 5;
+    if (bits >= 8) {
+      bits -= 8;
+      output.push((value >> bits) & 0xff);
+    }
+  }
+
+  return output.length > 0 ? new Uint8Array(output) : null;
+}
+
+async function hotp(secret: Uint8Array, counter: number): Promise<string> {
+  const counterBytes = new Uint8Array(8);
+  let c = counter;
+  for (let i = 7; i >= 0; i--) {
+    counterBytes[i] = c & 0xff;
+    c = Math.floor(c / 256);
+  }
+
+  const key = await crypto.subtle.importKey(
+    'raw',
+    secret,
+    { name: 'HMAC', hash: 'SHA-1' },
+    false,
+    ['sign']
+  );
+
+  const signature = new Uint8Array(await crypto.subtle.sign('HMAC', key, counterBytes));
+  const offset = signature[signature.length - 1] & 0x0f;
+  const binary =
+    ((signature[offset] & 0x7f) << 24) |
+    ((signature[offset + 1] & 0xff) << 16) |
+    ((signature[offset + 2] & 0xff) << 8) |
+    (signature[offset + 3] & 0xff);
+
+  const otp = binary % (10 ** TOTP_DIGITS);
+  return otp.toString().padStart(TOTP_DIGITS, '0');
+}
+
+function normalizeToken(token: string): string {
+  return token.replace(/\s+/g, '');
+}
+
+export async function verifyTotpToken(secretRaw: string, tokenRaw: string, nowMs: number = Date.now()): Promise<boolean> {
+  const token = normalizeToken(tokenRaw);
+  if (!/^\d{6}$/.test(token)) return false;
+
+  const secret = base32Decode(secretRaw);
+  if (!secret) return false;
+
+  const currentCounter = Math.floor(nowMs / 1000 / TOTP_STEP_SECONDS);
+  let matched = false;
+  for (let delta = -TOTP_WINDOW; delta <= TOTP_WINDOW; delta++) {
+    const expected = await hotp(secret, currentCounter + delta);
+    // Constant-time comparison: always check all windows, never short-circuit.
+    const a = new TextEncoder().encode(expected);
+    const b = new TextEncoder().encode(token);
+    let diff = a.length ^ b.length;
+    for (let i = 0; i < a.length && i < b.length; i++) {
+      diff |= a[i] ^ b[i];
+    }
+    if (diff === 0) matched = true;
+  }
+  return matched;
+}
+
+export function isTotpEnabled(secretRaw: string | undefined | null): boolean {
+  return Boolean(secretRaw && normalizeBase32(secretRaw).length > 0);
+}

src/utils/user-decryption.ts

@@ -0,0 +1,72 @@
+import { User, UserDecryptionOptions, WebAuthnPrfDecryptionOption } from '../types';
+
+function normalizeOptionalPublicKey(value: unknown): string {
+  if (value == null) return '';
+  return String(value);
+}
+
+export function buildAccountKeys(user: Pick<User, 'privateKey' | 'publicKey'>): Record<string, unknown> | null {
+  if (!user.privateKey) {
+    return null;
+  }
+
+  const publicKey = normalizeOptionalPublicKey(user.publicKey);
+
+  return {
+    publicKeyEncryptionKeyPair: {
+      wrappedPrivateKey: user.privateKey,
+      publicKey,
+      Object: 'publicKeyEncryptionKeyPair',
+    },
+    Object: 'privateKeys',
+  };
+}
+
+export function buildMasterPasswordUnlock(
+  user: Pick<User, 'email' | 'key' | 'kdfType' | 'kdfIterations' | 'kdfMemory' | 'kdfParallelism'>
+): UserDecryptionOptions['MasterPasswordUnlock'] {
+  return {
+    Kdf: {
+      KdfType: user.kdfType,
+      Iterations: user.kdfIterations,
+      Memory: user.kdfMemory ?? null,
+      Parallelism: user.kdfParallelism ?? null,
+    },
+    MasterKeyEncryptedUserKey: user.key,
+    MasterKeyWrappedUserKey: user.key,
+    Salt: user.email.toLowerCase(),
+    Object: 'masterPasswordUnlock',
+  };
+}
+
+export function buildUserDecryptionOptions(
+  user: Pick<User, 'email' | 'key' | 'kdfType' | 'kdfIterations' | 'kdfMemory' | 'kdfParallelism'>,
+  webAuthnPrfOption: WebAuthnPrfDecryptionOption | null = null
+): UserDecryptionOptions {
+  return {
+    HasMasterPassword: true,
+    Object: 'userDecryptionOptions',
+    MasterPasswordUnlock: buildMasterPasswordUnlock(user),
+    TrustedDeviceOption: null,
+    KeyConnectorOption: null,
+    WebAuthnPrfOption: webAuthnPrfOption,
+  };
+}
+
+export function buildUserDecryptionCompat(
+  user: Pick<User, 'email' | 'key' | 'kdfType' | 'kdfIterations' | 'kdfMemory' | 'kdfParallelism'>
+): Record<string, unknown> {
+  return {
+    masterPasswordUnlock: {
+      kdf: {
+        kdfType: user.kdfType,
+        iterations: user.kdfIterations,
+        memory: user.kdfMemory ?? null,
+        parallelism: user.kdfParallelism ?? null,
+      },
+      masterKeyWrappedUserKey: user.key,
+      masterKeyEncryptedUserKey: user.key,
+      salt: user.email.toLowerCase(),
+    },
+  };
+}

tailwind.config.js

@@ -0,0 +1,33 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: ['./webapp/index.html', './webapp/src/**/*.{ts,tsx}'],
+  darkMode: ['class', '[data-theme="dark"]'],
+  theme: {
+    extend: {
+      colors: {
+        canvas: 'var(--bg-accent)',
+        panel: 'var(--panel)',
+        'panel-soft': 'var(--panel-soft)',
+        'panel-muted': 'var(--panel-muted)',
+        line: 'var(--line)',
+        'line-soft': 'var(--line-soft)',
+        ink: 'var(--text)',
+        muted: 'var(--muted)',
+        'muted-strong': 'var(--muted-strong)',
+        brand: 'var(--primary)',
+        'brand-hover': 'var(--primary-hover)',
+        'brand-strong': 'var(--primary-strong)',
+        danger: 'var(--danger)',
+      },
+      boxShadow: {
+        soft: 'var(--shadow-sm)',
+        panel: 'var(--shadow-md)',
+        elevated: 'var(--shadow-lg)',
+      },
+      fontFamily: {
+        sans: ['Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif'],
+      },
+    },
+  },
+  plugins: [],
+};

tsconfig.json

@@ -15,6 +15,6 @@
     "noUnusedLocals": false,
     "noUnusedParameters": false
   },
-  "include": ["src/**/*"],
+  "include": ["src/**/*", "shared/**/*"],
   "exclude": ["node_modules"]
 }