feat(web): add spaces, grouped channels and file chat

web/src/core-bridge/worker/accountPersistence.ts

@@ -0,0 +1,34 @@
+import { openDB, type DBSchema } from 'idb';
+import { apiPath } from './http';
+
+export interface RememberedAccount {
+  username: string;
+  token: string;
+  key: CryptoKey;
+  vault: string;
+  revision: number;
+}
+interface LocalIdentity extends DBSchema {
+  sessions: { key: string; value: RememberedAccount };
+  device: { key: string; value: { id: string; name: string } };
+}
+const database = () => openDB<LocalIdentity>('webdrop-account-local-2', 1, { upgrade(db) {
+  db.createObjectStore('sessions'); db.createObjectStore('device');
+} });
+const endpoint = () => apiPath('/');
+export async function rememberedAccount(): Promise<RememberedAccount | undefined> { return (await database()).get('sessions', endpoint()); }
+export async function rememberAccount(value: RememberedAccount): Promise<void> { await (await database()).put('sessions', value, endpoint()); }
+export async function forgetAccount(): Promise<void> { await (await database()).delete('sessions', endpoint()); }
+export async function localAccountDevice(): Promise<{ id: string; name: string }> {
+  const db = await database();
+  const existing = await db.get('device', endpoint());
+  if (existing) return existing;
+  const name = /Android/i.test(navigator.userAgent) ? 'Android 浏览器' : /iPhone|iPad/i.test(navigator.userAgent) ? 'Apple 移动浏览器'
+    : /Windows/i.test(navigator.userAgent) ? 'Windows 浏览器' : /Mac/i.test(navigator.userAgent) ? 'Mac 浏览器' : '浏览器设备';
+  const value = { id: crypto.randomUUID(), name };
+  await db.put('device', value, endpoint());
+  return value;
+}
+export async function saveDeviceName(name: string): Promise<void> {
+  const device = await localAccountDevice(); await (await database()).put('device', { ...device, name }, endpoint());
+}