feat: enhance database indexing and optimize sync response handling

webapp/src/lib/api/send.ts

@@ -1,6 +1,7 @@
 import { base64ToBytes, bytesToBase64, decryptBw, decryptBwFileData, decryptStr, encryptBw, encryptBwFileData, hkdf, pbkdf2 } from '../crypto';
 import type { Send, SendDraft, SessionState } from '../types';
 import { chunkArray, createApiError, parseErrorMessage, parseJson, uploadDirectEncryptedPayload, type AuthedFetch } from './shared';
+import { loadVaultSyncSnapshot } from './vault-sync';
 
 function toIsoDateFromDays(value: string, required: boolean): string | null {
   const raw = String(value || '').trim();
@@ -61,10 +62,8 @@ function parseMaxAccessCountRaw(value: string): number | null {
 }
 
 export async function getSends(authedFetch: AuthedFetch): Promise<Send[]> {
-  const resp = await authedFetch('/api/sends');
-  if (!resp.ok) throw new Error('Failed to load sends');
-  const body = await parseJson<{ object: 'list'; data: Send[] }>(resp);
-  return body?.data || [];
+  const body = await loadVaultSyncSnapshot(authedFetch);
+  return body.sends || [];
 }
 
 export async function createSend(

webapp/src/lib/api/vault-sync.ts

@@ -0,0 +1,31 @@
+import type { Cipher, Folder, Send } from '../types';
+import { parseJson, type AuthedFetch } from './shared';
+
+interface VaultSyncResponse {
+  ciphers?: Cipher[];
+  folders?: Folder[];
+  sends?: Send[];
+}
+
+const pendingSyncRequests = new WeakMap<AuthedFetch, Promise<VaultSyncResponse>>();
+
+export async function loadVaultSyncSnapshot(authedFetch: AuthedFetch): Promise<VaultSyncResponse> {
+  const existing = pendingSyncRequests.get(authedFetch);
+  if (existing) return existing;
+
+  const request = (async () => {
+    const resp = await authedFetch('/api/sync');
+    if (!resp.ok) throw new Error('Failed to load vault');
+    const body = await parseJson<VaultSyncResponse>(resp);
+    return body || {};
+  })();
+
+  pendingSyncRequests.set(authedFetch, request);
+  try {
+    return await request;
+  } finally {
+    if (pendingSyncRequests.get(authedFetch) === request) {
+      pendingSyncRequests.delete(authedFetch);
+    }
+  }
+}

webapp/src/lib/api/vault.ts

@@ -2,7 +2,6 @@ import { base64ToBytes, decryptBw, decryptBwFileData, decryptStr, encryptBw, enc
 import type {
   Cipher,
   Folder,
-  ListResponse,
   SessionState,
   VaultDraft,
   VaultDraftField,
@@ -16,12 +15,11 @@ import {
   type AuthedFetch,
 } from './shared';
 import { readResponseBytesWithProgress } from '../download';
+import { loadVaultSyncSnapshot } from './vault-sync';
 
 export async function getFolders(authedFetch: AuthedFetch): Promise<Folder[]> {
-  const resp = await authedFetch('/api/folders');
-  if (!resp.ok) throw new Error('Failed to load folders');
-  const body = await parseJson<ListResponse<Folder>>(resp);
-  return body?.data || [];
+  const body = await loadVaultSyncSnapshot(authedFetch);
+  return body.folders || [];
 }
 
 export async function createFolder(
@@ -93,10 +91,8 @@ export async function updateFolder(
 }
 
 export async function getCiphers(authedFetch: AuthedFetch): Promise<Cipher[]> {
-  const resp = await authedFetch('/api/ciphers?deleted=true');
-  if (!resp.ok) throw new Error('Failed to load ciphers');
-  const body = await parseJson<ListResponse<Cipher>>(resp);
-  return body?.data || [];
+  const body = await loadVaultSyncSnapshot(authedFetch);
+  return body.ciphers || [];
 }
 
 export interface CiphersImportPayload {