architecture: 数据唯一权威迁至服务器——本地降级为实时缓存，写后即时推送+快照重建；账号登录转为云端原生（新增 /api/auth/password、/api/auth/delete、每日自动备份）

intern-log/repro/engine-realtime.ts

@@ -15,8 +15,8 @@ const store = new Map<string, string>()
   setItem: (k: string, v: string) => { store.set(k, String(v)) },
   removeItem: (k: string) => { store.delete(k) }
 }
-store.set('dsh_cloud_creds', JSON.stringify({ username: 'audit_a', password: 'aapass123' }))
-store.set('dsh_session_user', JSON.stringify({ userId: 'local_rt', username: 'audit_a' }))
+store.set('dsh_cloud_creds', JSON.stringify({ username: 'twodev', password: 'dev123456' }))
+store.set('dsh_session_user', JSON.stringify({ userId: 'local_rt', username: 'twodev' }))
 
 // Node 24 自带 EventSource；老环境则垫一个基于 fetch 流的最小实现
 if (typeof (globalThis as any).EventSource === 'undefined') {
@@ -54,7 +54,7 @@ async function main() {
   check('Node 有 EventSource（原生或垫片）', typeof (globalThis as any).EventSource !== 'undefined')
 
   bindDatabase(new WorklogDB('rt_a'))
-  await repo.setSetting('sync_base_url', BASE) // 测试环境指向本机服务
+  store.set('dsh_sync_base', BASE) // 测试环境同步基址走本地覆盖
   engine.enableRealtimeSync()
 
   // ---- 场景1：本地写入 -> 防抖 3s -> 自动推送 ----
@@ -63,7 +63,7 @@ async function main() {
 
   const login = await fetch(BASE + '/api/auth/login', {
     method: 'POST', headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ username: 'audit_a', password: 'aapass123' })
+    body: JSON.stringify({ username: 'twodev', password: 'dev123456' })
   })
   const tok = (await login.json()).token as string
   async function serverSnapshot(): Promise<Record<string, any>> {
@@ -101,10 +101,10 @@ async function main() {
 
   // ---- 场景3：autoSyncNow 手动失败可见性（断開服务）----
   engine.stopRealtime()
-  await repo.setSetting('sync_base_url', 'http://127.0.0.1:9') // 不可达端口
+  store.set('dsh_sync_base', 'http://127.0.0.1:9') // 服务不可达
   await engine.autoSyncNow()
   check('服务不可达时 syncLastError 被记录', engine.syncLastError.value !== '', engine.syncLastError.value)
-  await repo.setSetting('sync_base_url', BASE)
+  store.set('dsh_sync_base', BASE)
 
   console.log('==== 实时链路审计: PASS ' + pass + ' / FAIL ' + fail + ' ====')
   process.exit(fail > 0 ? 1 : 0)