fix: 同步应用循环数组解构错误（.for is not iterable）

intern-log/src/sync/engine.ts

@@ -1,5 +1,6 @@
 // 多端同步引擎：全量差异对比 + 记录级新者胜 + 软删除墓碑
 // 实时性：本地变更 3 秒内推送；服务端变更通过 SSE 秒级通知其他端；60 秒轮询兜底
+import Dexie, { liveQuery } from 'dexie'
 import { db } from '../db/schema'
 import { getSetting, setSetting } from '../db/repo'
 import { getCloudCreds } from '../db/auth'
@@ -167,6 +168,7 @@ let changeDebounce: number | null = null
 let sse: EventSource | null = null
 let sseKey = ''
 let realtimeAttached = false
+let realtimeSub: { unsubscribe: () => void } | null = null
 
 export async function autoSyncNow(): Promise<void> {
   if (syncRunning) {
@@ -179,20 +181,29 @@ export async function autoSyncNow(): Promise<void> {
   } catch { /* 自动同步静默失败，等待下次触发 */ }
 }
 
-// 实时触发：本地任何数据变更 3 秒后自动推送
+// 实时触发：本地任何数据变更 3 秒后自动推送（Dexie 4 核心 liveQuery，跨全部业务表）
 export function enableRealtimeSync(): void {
   if (realtimeAttached) return
   realtimeAttached = true
-  ;(db as unknown as AnyRow).on('changes', () => {
-    if (changesSuppressed || syncRunning) return
-    if (changeDebounce) window.clearTimeout(changeDebounce)
-    changeDebounce = window.setTimeout(() => { void autoSyncNow() }, 3000)
+  const sub = liveQuery(async () => {
+    const counts: Record<string, number> = {}
+    for (const t of TABLES) counts[t] = await db.table(t).count()
+    return counts
+  })
+  realtimeSub = sub.subscribe({
+    next: () => {
+      if (changesSuppressed || syncRunning) return
+      if (changeDebounce) globalThis.clearTimeout(changeDebounce)
+      changeDebounce = globalThis.setTimeout(() => { void autoSyncNow() }, 3000)
+    },
+    error: () => { /* 忽略监听错误，轮询兜底 */ }
   })
 }
 
 export function stopRealtime(): void {
+  if (realtimeSub) { realtimeSub.unsubscribe(); realtimeSub = null }
   if (sse) { sse.close(); sse = null; sseKey = '' }
-  if (changeDebounce) { window.clearTimeout(changeDebounce); changeDebounce = null }
+  if (changeDebounce) { globalThis.clearTimeout(changeDebounce); changeDebounce = null }
 }
 
 // 服务端 SSE 通知：其他端有变更时立即拉取
@@ -220,7 +231,7 @@ export async function runSync(config: SyncConfig): Promise<SyncResult> {
     const result = await doRunSync(config)
     if (pendingSync) {
       pendingSync = false
-      window.setTimeout(() => { void autoSyncNow() }, 800)
+      globalThis.setTimeout(() => { void autoSyncNow() }, 800)
     }
     return result
   } finally {
@@ -308,9 +319,9 @@ async function doRunSync(config: SyncConfig): Promise<SyncResult> {
         removed++
       }
     }
-    for (const [u, srow] of serverRows) {
-      if (dead.has(u)) continue
-      const local = byUuid.get(u)
+    for (const srow of serverRows) {
+      if (dead.has(srow.uuid)) continue
+      const local = byUuid.get(srow.uuid)
       if (!local) {
         await table.add({ ...srow })
         pulled++