fix: 同步引擎重写——外键重映射、自然键去重、墓碑传播；服务端冲突比较修正（双设备测试 12/12）

intern-log/dist/assets/index-fvhfb3wJ.js

@@ -1,2 +1,2 @@
-const __vite__mapDeps=(i,m=__vite__mapDeps,d=(m.f||(m.f=["./web-Cr7cLzMr.js","./index-D4g5kDSe.js","./index-B9eVtom_.css"])))=>i.map(i=>d[i]);
-import{r as s,_ as i}from"./index-D4g5kDSe.js";var t;(function(e){e.Documents="DOCUMENTS",e.Data="DATA",e.Library="LIBRARY",e.Cache="CACHE",e.External="EXTERNAL",e.ExternalStorage="EXTERNAL_STORAGE"})(t||(t={}));var a;(function(e){e.UTF8="utf8",e.ASCII="ascii",e.UTF16="utf16"})(a||(a={}));const E=s("Filesystem",{web:()=>i(()=>import("./web-Cr7cLzMr.js"),__vite__mapDeps([0,1,2]),import.meta.url).then(e=>new e.FilesystemWeb)});export{t as Directory,a as Encoding,E as Filesystem};
+const __vite__mapDeps=(i,m=__vite__mapDeps,d=(m.f||(m.f=["./web-C9gz15N3.js","./index-o1hiWX9Y.js","./index-B9eVtom_.css"])))=>i.map(i=>d[i]);
+import{r as s,_ as i}from"./index-o1hiWX9Y.js";var t;(function(e){e.Documents="DOCUMENTS",e.Data="DATA",e.Library="LIBRARY",e.Cache="CACHE",e.External="EXTERNAL",e.ExternalStorage="EXTERNAL_STORAGE"})(t||(t={}));var a;(function(e){e.UTF8="utf8",e.ASCII="ascii",e.UTF16="utf16"})(a||(a={}));const E=s("Filesystem",{web:()=>i(()=>import("./web-C9gz15N3.js"),__vite__mapDeps([0,1,2]),import.meta.url).then(e=>new e.FilesystemWeb)});export{t as Directory,a as Encoding,E as Filesystem};

intern-log/dist/index.html

@@ -8,7 +8,7 @@
     <link rel="icon" href="./icons/icon.svg" type="image/svg+xml" />
     <link rel="apple-touch-icon" href="./icons/icon-192.png" />
     <title>实习工作日志</title>
-    <script type="module" crossorigin src="./assets/index-D4g5kDSe.js"></script>
+    <script type="module" crossorigin src="./assets/index-o1hiWX9Y.js"></script>
     <link rel="stylesheet" crossorigin href="./assets/index-B9eVtom_.css">
   </head>
   <body>

intern-log/repro/two-device.ts

@@ -0,0 +1,114 @@
+import 'fake-indexeddb/auto'
+import { bindDatabase, WorklogDB } from '../src/db/schema'
+
+const BASE = 'http://127.0.0.1:3780'
+let pass = 0
+let fail = 0
+function check(name: string, ok: boolean, detail?: string): void {
+  if (ok) { pass++; console.log('  PASS ' + name) }
+  else { fail++; console.log('  FAIL ' + name + (detail ? ' -> ' + detail : '')) }
+}
+
+async function main() {
+  // 云端注册（清空服务端数据后全新注册）
+  await fetch(BASE + '/api/auth/register', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ username: 'twodev', password: 'dev123456' })
+  }).catch(() => { /* 已存在则忽略 */ })
+
+  const engine = await import('../src/sync/engine')
+
+  // ===== 设备 A：创建项目、工作日志、日志条目、设置 =====
+  bindDatabase(new WorklogDB('dev_a'))
+  const a = (await import('../src/db/schema')).db
+  await a.project.bulkAdd([{ name: '项目A', archived: 0, created_at: '2025-01-01T00:00:00' }])
+  await a.work_log.bulkAdd([{ date: '2025-01-02', created_at: '2025-01-02T00:00:00' }])
+  await a.setting.bulkAdd([{ key: 'work_start', value: '09:00' }])
+  await a.table('log_item').bulkAdd([{
+    work_log_id: 1, content: 'A 设备的日志', project_id: 1, category: 'dev',
+    minutes: 60, is_milestone: 1, needs_followup: 0, takeaway: null,
+    remark: null, sort_order: 0, created_at: '2025-01-02T10:00:00'
+  }])
+  const rA = await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+  console.log('设备A 推送:', JSON.stringify({ p: rA.pushed, e: rA.errors }))
+
+  // ===== 设备 B：全新空库，拉取设备 A 数据 =====
+  bindDatabase(new WorklogDB('dev_b'))
+  const b = (await import('../src/db/schema')).db
+  const rB1 = await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+  console.log('设备B 拉取:', JSON.stringify({ p: rB1.pushed, e: rB1.errors }))
+
+  const bProjects = await b.project.toArray()
+  const bWorkLogs = await b.work_log.toArray()
+  const bItems = await b.log_item.toArray()
+  const bSettings = await b.setting.toArray()
+  check('B 拉到项目', bProjects.length === 1 && bProjects[0].name === '项目A')
+  check('B 拉到工作日志', bWorkLogs.length === 1 && bWorkLogs[0].date === '2025-01-02')
+  check('B 拉到日志条目', bItems.length === 1 && bItems[0].content === 'A 设备的日志')
+  check('B 外键重映射(log_item.work_log_id 指向本地 work_log)', bItems[0].work_log_id === bWorkLogs[0].id)
+  check('B 外键重映射(log_item.project_id 指向本地 project)', bItems[0].project_id === bProjects[0].id)
+  check('B 拉到设置', bSettings.some(s => s.key === 'work_start' && s.value === '09:00'))
+
+  // ===== 设备 B：打卡（创建当日考勤与工作日志）+ 新日志条目，推送 =====
+  await b.attendance.bulkAdd([{ date: '2025-01-02', clock_in_at: '2025-01-02T09:00:00', clock_out_at: null, kind: 'normal', note: null, created_at: '2025-01-02T09:00:00' }])
+  await b.table('log_item').add({
+    work_log_id: bWorkLogs[0].id, content: 'B 设备的日志', project_id: null, category: 'dev',
+    minutes: null, is_milestone: 0, needs_followup: 1, takeaway: null,
+    remark: null, sort_order: 0, created_at: '2025-01-02T11:00:00'
+  })
+  const rB2 = await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+  console.log('设备B 二次推送:', JSON.stringify({ p: rB2.pushed, e: rB2.errors }))
+
+  // ===== 设备 A：拉取 B 的数据（考勤 + 新日志条目，含自然键去重场景）=====
+  bindDatabase(new WorklogDB('dev_a'))
+  const a2 = (await import('../src/db/schema')).db
+  const rA2 = await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+  console.log('设备A 拉取:', JSON.stringify({ p: rA2.pushed, e: rA2.errors }))
+
+  const aAtt = await a2.attendance.toArray()
+  const aItems = await a2.log_item.toArray()
+  const aWorkLogs = await a2.work_log.toArray()
+  check('A 拉到 B 的考勤', aAtt.length === 1 && aAtt[0].date === '2025-01-02')
+  check('A 拉到 B 的日志条目', aItems.some(i => i.content === 'B 设备的日志'))
+  check('A 无重复工作日志（自然键去重）', aWorkLogs.length === 1)
+  check('A 的日志条目仍然可见（未因去重丢失）', aItems.length >= 2)
+
+  // ===== 冲突场景：两端为同一天各自创建工作日志后合并 =====
+  bindDatabase(new WorklogDB('dev_b'))
+  const b2 = (await import('../src/db/schema')).db
+  await b2.work_log.bulkPut([{ date: '2025-01-03', created_at: '2025-01-03T00:00:00', uuid: 'b-day3', updated_at: '2025-01-03T08:00:00' }])
+  await b2.table('log_item').add({
+    work_log_id: 2, content: 'B 的 01-03 记录', project_id: null, category: 'dev',
+    minutes: null, is_milestone: 0, needs_followup: 0, takeaway: null,
+    remark: null, sort_order: 0, created_at: '2025-01-03T08:00:00', uuid: 'item-b-day3', updated_at: '2025-01-03T08:00:00'
+  })
+  await b2.table('log_item').add({
+    work_log_id: 999, content: 'B 的 01-03 记录(重映射目标)', project_id: null, category: 'dev',
+    minutes: null, is_milestone: 0, needs_followup: 0, takeaway: null,
+    remark: null, sort_order: 0, created_at: '2025-01-03T08:30:00', uuid: 'item-b-day3b', updated_at: '2025-01-03T08:30:00', wuuid: 'b-day3'
+  })
+  await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+
+  bindDatabase(new WorklogDB('dev_a'))
+  const a3 = (await import('../src/db/schema')).db
+  await a3.work_log.bulkAdd([{ date: '2025-01-03', created_at: '2025-01-03T07:00:00', uuid: 'a-day3', updated_at: '2025-01-03T07:00:00' }])
+  await engine.runSync({ baseUrl: BASE, username: 'twodev', password: 'dev123456' })
+
+  const a3Logs = await a3.work_log.toArray()
+  const day3 = a3Logs.filter(l => l.date === '2025-01-03')
+  check('冲突合并后同日仅一条工作日志', day3.length === 1)
+  console.log('  DEBUG day3:', JSON.stringify(day3))
+  const a3Items = await a3.log_item.toArray()
+  const day3Items = a3Items.filter(i => i.content.indexOf('01-03') >= 0)
+  console.log('  DEBUG day3Items:', JSON.stringify(day3Items))
+  check('冲突合并后 B 的 01-03 条目保留且外键正确', day3Items.length === 2 && day3Items.every(i => i.work_log_id === day3[0].id))
+
+  console.log('==== 结果: PASS ' + pass + ' / FAIL ' + fail + ' ====')
+  process.exit(fail > 0 ? 1 : 0)
+}
+
+main().catch(e => {
+  console.error('FAILED:', (e && (e.stack || e.message)) || e)
+  process.exit(1)
+})

intern-log/src/sync/engine.ts

@@ -1,4 +1,4 @@
-// 多端同步引擎：全量差异对比 + 记录级新者胜 + 软删除墓碑
+// 多端同步引擎：全量差异对比 + 记录级新者胜 + 自然键去重 + 外键重映射 + 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'
@@ -7,13 +7,20 @@ import { getCloudCreds } from '../db/auth'
 import { nowLocalISO } from '../lib/date'
 import { notifyAttendanceChanged } from '../lib/bus'
 
-export const DEFAULT_SYNC_BASE = 'https://daywk.linyux.cn'
-
 const TABLES = ['project', 'work_log', 'log_item', 'attendance', 'weekly_note', 'setting', 'memo', 'credential', 'transaction']
 
 // 本地敏感或临时性的设置不参与同步
 const EXCLUDE_SETTING_KEYS = new Set(['sync_cursor', 'sync_last_time', 'sync_token', 'last_project', 'last_category'])
 
+// 自然键：同一逻辑记录在两台设备上独立创建时的去重依据（冲突时保留 updated_at 较新者）
+const NATURAL_KEYS: Record<string, string> = {
+  project: 'name',
+  work_log: 'date',
+  attendance: 'date',
+  weekly_note: 'week_start',
+  setting: 'key'
+}
+
 export const SYNC_TABLES = TABLES
 
 interface AnyRow { [key: string]: any }
@@ -64,6 +71,7 @@ export interface SyncResult {
   pushed: number
   pulled: number
   removed: number
+  errors: number
   at: string
 }
 
@@ -73,43 +81,6 @@ export interface SyncConfig {
   password: string
 }
 
-// 同步基址：设置页可覆盖，默认使用独立子域名
-export async function getSyncBase(): Promise<string> {
-  return (await getSetting('sync_base_url', '')) || DEFAULT_SYNC_BASE
-}
-
-async function loadSyncConfig(): Promise<SyncConfig> {
-  const creds = getCloudCreds()
-  if (!creds) throw new Error('未登录，无法同步')
-  return { baseUrl: await getSyncBase(), username: creds.username, password: creds.password }
-}
-
-// 使用当前登录凭据执行同步（供设置页与自动同步调用）
-export async function syncWithStoredConfig(): Promise<SyncResult> {
-  return runSync(await loadSyncConfig())
-}
-
-// 登录后自动绑定云端账号：云端不存在则注册，同名则校验密码一致
-export async function ensureCloudBinding(): Promise<void> {
-  const creds = getCloudCreds()
-  if (!creds) throw new Error('未登录')
-  const base = await getSyncBase()
-  const headers = { 'Content-Type': 'application/json' }
-  const body = JSON.stringify({ username: creds.username, password: creds.password })
-  let resp = await fetch(base + '/api/auth/register', { method: 'POST', headers, body })
-  if (resp.status === 409) {
-    resp = await fetch(base + '/api/auth/login', { method: 'POST', headers, body })
-    if (!resp.ok) throw new Error('云端已存在同名账号且密码不一致，请检查')
-  } else if (!resp.ok) {
-    throw new Error('云端绑定失败：' + resp.status)
-  }
-}
-
-export function getCloudUser(): string | null {
-  const c = getCloudCreds()
-  return c ? c.username : null
-}
-
 export async function isSyncConfigured(): Promise<boolean> {
   return getCloudCreds() != null
 }
@@ -219,15 +190,91 @@ function ensureSSE(base: string, token: string): void {
   } catch { sse = null }
 }
 
+// 同步基址：设置页可覆盖，默认使用独立子域名
+export async function getSyncBase(): Promise<string> {
+  return (await getSetting('sync_base_url', '')) || DEFAULT_SYNC_BASE
+}
+export const DEFAULT_SYNC_BASE = 'https://daywk.linyux.cn'
+
+async function loadSyncConfig(): Promise<SyncConfig> {
+  const creds = getCloudCreds()
+  if (!creds) throw new Error('未登录，无法同步')
+  return { baseUrl: await getSyncBase(), username: creds.username, password: creds.password }
+}
+
+// 登录后自动绑定云端账号：云端不存在则注册，同名则校验密码一致
+export async function ensureCloudBinding(): Promise<void> {
+  const creds = getCloudCreds()
+  if (!creds) throw new Error('未登录')
+  const base = await getSyncBase()
+  const headers = { 'Content-Type': 'application/json' }
+  const body = JSON.stringify({ username: creds.username, password: creds.password })
+  let resp = await fetch(base + '/api/auth/register', { method: 'POST', headers, body })
+  if (resp.status === 409) {
+    resp = await fetch(base + '/api/auth/login', { method: 'POST', headers, body })
+    if (!resp.ok) throw new Error('云端已存在同名账号且密码不一致，请检查')
+  } else if (!resp.ok) {
+    throw new Error('云端绑定失败：' + resp.status)
+  }
+}
+
+export function getCloudUser(): string | null {
+  const c = getCloudCreds()
+  return c ? c.username : null
+}
+
+// 使用当前登录凭据执行同步（供设置页与自动同步调用）
+export async function syncWithStoredConfig(): Promise<SyncResult> {
+  return runSync(await loadSyncConfig())
+}
+
+// ---------- 推送规范化：剥离本地 id，外键转换为 uuid 引用 ----------
+
+interface RefMaps {
+  workLog: Map<number, AnyRow>
+  project: Map<number, AnyRow>
+}
+
+function normalizeRow(t: string, row: AnyRow, refs: RefMaps): AnyRow {
+  const clean: AnyRow = {}
+  for (const k of Object.keys(row)) {
+    if (k === 'id') continue
+    clean[k] = row[k]
+  }
+  if (t === 'log_item') {
+    delete clean.work_log_id
+    delete clean.project_id
+    const wl = row.work_log_id ? refs.workLog.get(row.work_log_id) : null
+    if (wl && wl.uuid) clean.wuuid = wl.uuid
+    const pj = row.project_id ? refs.project.get(row.project_id) : null
+    if (pj && pj.uuid) clean.puuid = pj.uuid
+  }
+  return clean
+}
+
+async function buildRefMaps(): Promise<RefMaps> {
+  const wlRows = await db.work_log.toArray()
+  const pjRows = await db.project.toArray()
+  return {
+    workLog: new Map(wlRows.map(r => [r.id as number, r])),
+    project: new Map(pjRows.map(p => [p.id as number, p]))
+  }
+}
+
 // ---------- 执行同步 ----------
 
+let applyErrors = 0
+let lastApplyError = ''
+
 export async function runSync(config: SyncConfig): Promise<SyncResult> {
   if (syncRunning) {
     pendingSync = true
-    return { pushed: 0, pulled: 0, removed: 0, at: '' }
+    return { pushed: 0, pulled: 0, removed: 0, errors: 0, at: '' }
   }
   syncRunning = true
   changesSuppressed = true
+  applyErrors = 0
+  lastApplyError = ''
   try {
     const result = await doRunSync(config)
     if (pendingSync) {
@@ -245,8 +292,9 @@ async function doRunSync(config: SyncConfig): Promise<SyncResult> {
   const base = config.baseUrl.trim().replace(/\/+$/, '')
   if (!base) throw new Error('请先配置同步服务地址')
   await ensureSyncFields()
+  const refs = await buildRefMaps()
 
-  // 1. 载入镜像，计算本地差异
+  // 1. 载入镜像，计算本地差异（推送内容按规范化形式比对）
   const mirrorRows = await db.sync_mirror.toArray()
   const mirror = new Map<string, { table: string; uuid: string; hash: string }>()
   for (const m of mirrorRows) mirror.set(m.table + '|' + m.uuid, m)
@@ -262,7 +310,7 @@ async function doRunSync(config: SyncConfig): Promise<SyncResult> {
     for (const row of rows) current.set(row.uuid, row)
 
     for (const [u, row] of current) {
-      const clean = stripId(row)
+      const clean = normalizeRow(t, row, refs)
       const h = rowHash(clean)
       const m = mirror.get(t + '|' + u)
       if (!m || m.hash !== h) {
@@ -279,6 +327,12 @@ async function doRunSync(config: SyncConfig): Promise<SyncResult> {
     pushTables[t] = pushTables[t] || []
   }
 
+  // 本地待推送的删除墓碑
+  const localTombs = await db.tombstone.toArray()
+  for (const tb of localTombs) {
+    tombstones.push({ table: tb.table, uuid: tb.uuid, deleted_at: tb.deleted_at })
+  }
+
   // 2. 认证并与服务端交换（token 失效自动重登一次）
   const token = await ensureToken(base, config)
   const doPush = (tk: string) => fetch(base + '/api/sync', {
@@ -299,58 +353,159 @@ async function doRunSync(config: SyncConfig): Promise<SyncResult> {
   const serverTombstones: { table: string; uuid: string; deleted_at: string }[] = data.tombstones || []
 
   // 3. 应用服务端权威数据
+  const applyResult = await applyServerTables(serverTables, serverTombstones)
+
+  // 4. 重建镜像 + 建立 SSE 实时通道 + 广播考勤变更
+  const refsNow = await buildRefMaps()
+  const finalMirror: { table: string; uuid: string; hash: string }[] = []
+  for (const t of TABLES) {
+    const rows: AnyRow[] = await db.table(t).toArray()
+    for (const row of rows) {
+      if (t === 'setting' && EXCLUDE_SETTING_KEYS.has(row.key)) continue
+      finalMirror.push({ table: t, uuid: row.uuid, hash: rowHash(normalizeRow(t, row, refsNow)) })
+    }
+  }
+  await db.sync_mirror.clear()
+  if (finalMirror.length) await db.sync_mirror.bulkAdd(finalMirror.map(m => ({ ...m })))
+  ensureSSE(base, token)
+  const at = nowLocalISO()
+  await setSetting('sync_last_time', at)
+  if (applyResult.pulled > 0 || applyResult.removed > 0) notifyAttendanceChanged()
+  // 清除已确认推送的本地墓碑（保留本轮新产生的去重墓碑）
+  if (localTombs.length) {
+    const pushedIds = new Set(localTombs.map(t => t.id))
+    await db.tombstone.where('id').anyOf(Array.from(pushedIds)).delete()
+  }
+  return { pushed, pulled: applyResult.pulled, removed: applyResult.removed, errors: applyResult.errors, at }
+}
+
+// ---------- 应用服务端数据（含自然键去重与外键重映射） ----------
+
+let localWorkLogIdByUuid = new Map<string, number>()
+let localProjectIdByUuid = new Map<string, number>()
+let applyConflicts = 0
+
+async function applyServerTables(
+  serverTables: Record<string, AnyRow[]>,
+  serverTombstones: { table: string; uuid: string; deleted_at: string }[]
+): Promise<{ pulled: number; removed: number; errors: number }> {
   let pulled = 0
   let removed = 0
-  const finalMirror: { table: string; uuid: string; hash: string }[] = []
 
   for (const t of TABLES) {
     const table = db.table(t)
     const localRows: AnyRow[] = await table.toArray()
     const byUuid = new Map<string, AnyRow>()
     for (const row of localRows) byUuid.set(row.uuid, row)
+    const nk = NATURAL_KEYS[t] || null
+    const byNatural = new Map<string, AnyRow>()
+    if (nk) {
+      for (const row of localRows) {
+        const v = row[nk]
+        if (v != null && v !== '') byNatural.set(String(v), row)
+      }
+    }
 
-    const serverRows: AnyRow[] = serverTables[t] || []
-    const serverByUuid = new Map<string, AnyRow>()
-    for (const row of serverRows) serverByUuid.set(row.uuid, row)
     const dead = new Set(serverTombstones.filter(x => x.table === t).map(x => x.uuid))
+    const serverRows: AnyRow[] = serverTables[t] || []
 
-    for (const [u, row] of byUuid) {
-      if (dead.has(u)) {
+    // 阶段一：应用未删除行的增改
+    for (const srow of serverRows) {
+      try {
+        if (dead.has(srow.uuid)) continue
+        const local = byUuid.get(srow.uuid)
+        if (local) {
+          const localUa = String(local.updated_at || '')
+          const serverUa = String(srow.updated_at || '')
+          if (serverUa > localUa) {
+            const patch: AnyRow = { ...srow }
+            if (t === 'setting') delete patch.key
+            if (t === 'log_item') {
+              const wlId = srow.wuuid ? localWorkLogIdByUuid.get(srow.wuuid) : null
+              if (!wlId) continue
+              patch.work_log_id = wlId
+              delete patch.wuuid
+              patch.project_id = srow.puuid ? (localProjectIdByUuid.get(srow.puuid) ?? null) : (local.project_id ?? null)
+              delete patch.puuid
+            }
+            await table.update(local.id, patch)
+            pulled++
+          }
+        } else {
+          const nkVal = nk && srow[nk] != null && srow[nk] !== '' ? String(srow[nk]) : null
+          const dup = nkVal ? byNatural.get(nkVal) : undefined
+          if (dup && dup.uuid !== srow.uuid) {
+            const dupUa = String(dup.updated_at || '')
+            const serverUa = String(srow.updated_at || '')
+            if (serverUa >= dupUa) {
+              // 服务端较新：先迁移关联数据，删除本地重复行，写入服务端行
+              if (t === 'work_log') {
+                await db.log_item.where('work_log_id').equals(dup.id as number).modify({ work_log_id: -1 })
+              }
+              await table.delete(pkOf(t, dup))
+              await db.tombstone.add({ table: t, uuid: dup.uuid, deleted_at: nowLocalISO() })
+              const newId = await table.add({ ...srow })
+              if (t === 'work_log') {
+                await db.log_item.where('work_log_id').equals(-1).modify({ work_log_id: newId })
+              }
+              byUuid.set(srow.uuid, { ...srow, id: newId })
+              if (nk && nkVal) byNatural.set(nkVal, { ...srow, id: newId })
+              pulled++
+            } else {
+              // 本地较新：跳过服务端行，记墓碑待下次推送清除服务端副本
+              await db.tombstone.add({ table: t, uuid: srow.uuid, deleted_at: nowLocalISO() })
+              applyConflicts++
+            }
+          } else {
+            if (t === 'log_item') {
+              const wlId = srow.wuuid ? localWorkLogIdByUuid.get(srow.wuuid) : null
+              if (!wlId) continue
+              srow.work_log_id = wlId
+              delete srow.wuuid
+              srow.project_id = srow.puuid ? (localProjectIdByUuid.get(srow.puuid) ?? null) : null
+              delete srow.puuid
+            }
+            const newId = await table.add({ ...srow })
+            byUuid.set(srow.uuid, { ...srow, id: newId })
+            if (nk && nkVal) byNatural.set(nkVal, { ...srow, id: newId })
+            pulled++
+          }
+        }
+      } catch (err) {
+        applyErrors++
+        lastApplyError = err instanceof Error ? err.message : String(err)
+      }
+    }
+
+    // 阶段二：应用墓碑删除（work_log 删除时把本地条目迁移到同日幸存者）
+    for (const row of localRows) {
+      if (!dead.has(row.uuid)) continue
+      try {
+        if (t === 'work_log') {
+          const freshRows: AnyRow[] = await table.toArray()
+          const survivor = freshRows.find(r2 => r2.date === row.date && !dead.has(r2.uuid) && r2.uuid !== row.uuid)
+          if (survivor && row.id) {
+            await db.log_item.where('work_log_id').equals(row.id as number).modify({ work_log_id: survivor.id as number })
+          }
+        }
         await table.delete(pkOf(t, row))
         removed++
+      } catch (err) {
+        applyErrors++
       }
     }
-    for (const srow of serverRows) {
-      if (dead.has(srow.uuid)) continue
-      const local = byUuid.get(srow.uuid)
-      if (!local) {
-        await table.add({ ...srow })
-        pulled++
-      } else {
-        const localUa = String(local.updated_at || '')
-        const serverUa = String(srow.updated_at || '')
-        if (serverUa > localUa) {
-          const patch: AnyRow = { ...srow }
-          // setting 表主键为 key，禁止通过 update 修改主键字段
-          if (t === 'setting') delete patch.key
-          await table.update(pkOf(t, local), patch)
-          pulled++
-        }
-      }
+
+    // 外键重映射表：work_log 与 project 处理完成后构建
+    if (t === 'work_log') {
+      const fresh: AnyRow[] = await table.toArray()
+      localWorkLogIdByUuid = new Map(fresh.map(r => [r.uuid as string, r.id as number]))
     }
-    const finalRows: AnyRow[] = await table.toArray()
-    for (const row of finalRows) {
-      if (t === 'setting' && EXCLUDE_SETTING_KEYS.has(row.key)) continue
-      finalMirror.push({ table: t, uuid: row.uuid, hash: rowHash(stripId(row)) })
+    if (t === 'project') {
+      const fresh: AnyRow[] = await table.toArray()
+      localProjectIdByUuid = new Map(fresh.map(r => [r.uuid as string, r.id as number]))
     }
   }
-
-  // 4. 重建镜像 + 建立 SSE 实时通道 + 广播考勤变更
-  await db.sync_mirror.clear()
-  if (finalMirror.length) await db.sync_mirror.bulkAdd(finalMirror.map(m => ({ ...m })))
-  ensureSSE(base, token)
-  const at = nowLocalISO()
-  await setSetting('sync_last_time', at)
-  if (pulled > 0 || removed > 0) notifyAttendanceChanged()
-  return { pushed, pulled, removed, at }
+  void lastApplyError
+  void applyConflicts
+  return { pulled, removed, errors: applyErrors }
 }