feat: enhance deployment process and update dependencies

- Updated the deployment script to build the web application before deploying.
- Upgraded Wrangler dependency from 4.61.1 to 4.69.0.

feat: add import item limit and request body size limit

- Introduced a new limit for the maximum total items allowed in a single import (5000).
- Set a hard body size limit for JSON API endpoints (25 MB).

feat: validate KDF parameters during registration and password change

- Added validation for KDF parameters to ensure compliance with Bitwarden's minimum requirements.
- Enhanced error handling for invalid KDF parameters during user registration and password change.

feat: clean up R2 files on user deletion

- Implemented cleanup of R2 files associated with user attachments and sends before deleting user metadata.

feat: verify folder ownership when creating or updating ciphers

- Added checks to ensure that users cannot reference folders owned by other users when creating or updating ciphers.

fix: handle corrupted cipher data gracefully

- Improved error handling when retrieving ciphers from the database to avoid crashes due to corrupted data.

feat: increment send access count atomically

- Added a method to atomically increment the access count for sends and return whether the update was successful.

fix: enforce request body size limits

- Implemented checks to reject oversized request bodies for non-file upload paths.

fix: update error handling for database initialization

- Enhanced error logging for database initialization failures while providing a generic message to clients.

feat: enhance security with Content Security Policy

- Added a Content Security Policy to the web application to improve security against XSS attacks.

fix: remove plaintext TOTP secret from localStorage

- Updated the TOTP enabling process to remove the plaintext secret from localStorage after it is stored on the server.

fix: ensure only PBKDF2 hash is sent for public send access

- Modified the public send access payload to ensure only the PBKDF2 hash is sent, never the plaintext password.

src/router.ts

@@ -240,6 +240,18 @@ export async function handleRequest(request: Request, env: Env): Promise<Respons
   // Route matching
   try {
 
+    // Reject oversized bodies before any path-specific parsing.
+    // File upload paths enforce their own limits and are exempt here.
+    const isFileUploadPath =
+      /^\/api\/ciphers\/[a-f0-9-]+\/attachment\/[a-f0-9-]+$/i.test(path) ||
+      /^\/api\/sends\/[a-f0-9-]+\/file\/[a-f0-9-]+$/i.test(path);
+    if (!isFileUploadPath) {
+      const contentLength = parseInt(request.headers.get('Content-Length') || '0', 10);
+      if (contentLength > LIMITS.request.maxBodyBytes) {
+        return errorResponse('Request body too large', 413);
+      }
+    }
+
     // Setup status
     if (path === '/setup/status' && method === 'GET') {
       return handleSetupStatus(request, env);
@@ -328,6 +340,8 @@ export async function handleRequest(request: Request, env: Env): Promise<Respons
 
     // Notifications hub (stub - no auth required, return 200 for connection)
     if (path.startsWith('/notifications/')) {
+      const blocked = await enforcePublicRateLimit();
+      if (blocked) return blocked;
       return new Response(null, { status: 200 });
     }