Merge pull request #373 from aits2026/codex/ts0305-01-export-module-upgrade

导出模块继续优化+朋友圈体验增强+显性化应用锁入口+其他一些小优化

electron/main.ts

@@ -24,7 +24,7 @@ import { windowsHelloService } from './services/windowsHelloService'
 import { exportCardDiagnosticsService } from './services/exportCardDiagnosticsService'
 import { cloudControlService } from './services/cloudControlService'
 
-import { registerNotificationHandlers, showNotification } from './windows/notificationWindow'
+import { destroyNotificationWindow, registerNotificationHandlers, showNotification } from './windows/notificationWindow'
 import { httpService } from './services/httpService'
 
 
@@ -87,10 +87,12 @@ let onboardingWindow: BrowserWindow | null = null
 // Splash 启动窗口
 let splashWindow: BrowserWindow | null = null
 const sessionChatWindows = new Map<string, BrowserWindow>()
+const sessionChatWindowSources = new Map<string, 'chat' | 'export'>()
 const keyService = new KeyService()
 
 let mainWindowReady = false
 let shouldShowMain = true
+let isAppQuitting = false
 
 // 更新下载状态管理（Issue #294 修复）
 let isDownloadInProgress = false
@@ -123,6 +125,47 @@ interface AnnualReportYearsTaskState {
   updatedAt: number
 }
 
+interface OpenSessionChatWindowOptions {
+  source?: 'chat' | 'export'
+  initialDisplayName?: string
+  initialAvatarUrl?: string
+  initialContactType?: 'friend' | 'group' | 'official' | 'former_friend' | 'other'
+}
+
+const normalizeSessionChatWindowSource = (source: unknown): 'chat' | 'export' => {
+  return String(source || '').trim().toLowerCase() === 'export' ? 'export' : 'chat'
+}
+
+const normalizeSessionChatWindowOptionString = (value: unknown): string => {
+  return String(value || '').trim()
+}
+
+const loadSessionChatWindowContent = (
+  win: BrowserWindow,
+  sessionId: string,
+  source: 'chat' | 'export',
+  options?: OpenSessionChatWindowOptions
+) => {
+  const queryParams = new URLSearchParams({
+    sessionId,
+    source
+  })
+  const initialDisplayName = normalizeSessionChatWindowOptionString(options?.initialDisplayName)
+  const initialAvatarUrl = normalizeSessionChatWindowOptionString(options?.initialAvatarUrl)
+  const initialContactType = normalizeSessionChatWindowOptionString(options?.initialContactType)
+  if (initialDisplayName) queryParams.set('initialDisplayName', initialDisplayName)
+  if (initialAvatarUrl) queryParams.set('initialAvatarUrl', initialAvatarUrl)
+  if (initialContactType) queryParams.set('initialContactType', initialContactType)
+  const query = queryParams.toString()
+  if (process.env.VITE_DEV_SERVER_URL) {
+    win.loadURL(`${process.env.VITE_DEV_SERVER_URL}#/chat-window?${query}`)
+    return
+  }
+  win.loadFile(join(__dirname, '../dist/index.html'), {
+    hash: `/chat-window?${query}`
+  })
+}
+
 const annualReportYearsLoadTasks = new Map<string, AnnualReportYearsTaskState>()
 const annualReportYearsTaskByCacheKey = new Map<string, string>()
 const annualReportYearsSnapshotCache = new Map<string, { snapshot: AnnualReportYearsProgressPayload; updatedAt: number; taskId: string }>()
@@ -290,6 +333,21 @@ function createWindow(options: { autoShow?: boolean } = {}) {
     callback(false)
   })
 
+  win.on('closed', () => {
+    if (mainWindow !== win) return
+
+    mainWindow = null
+    mainWindowReady = false
+
+    if (process.platform !== 'darwin' && !isAppQuitting) {
+      // 隐藏通知窗也是 BrowserWindow，必须销毁，否则会阻止应用退出。
+      destroyNotificationWindow()
+      if (BrowserWindow.getAllWindows().length === 0) {
+        app.quit()
+      }
+    }
+  })
+
   return win
 }
 
@@ -688,12 +746,18 @@ function createChatHistoryWindow(sessionId: string, messageId: number) {
 /**
  * 创建独立的会话聊天窗口（单会话，复用聊天页右侧消息区域）
  */
-function createSessionChatWindow(sessionId: string) {
+function createSessionChatWindow(sessionId: string, options?: OpenSessionChatWindowOptions) {
   const normalizedSessionId = String(sessionId || '').trim()
   if (!normalizedSessionId) return null
+  const normalizedSource = normalizeSessionChatWindowSource(options?.source)
 
   const existing = sessionChatWindows.get(normalizedSessionId)
   if (existing && !existing.isDestroyed()) {
+    const trackedSource = sessionChatWindowSources.get(normalizedSessionId) || 'chat'
+    if (trackedSource !== normalizedSource) {
+      loadSessionChatWindowContent(existing, normalizedSessionId, normalizedSource, options)
+      sessionChatWindowSources.set(normalizedSessionId, normalizedSource)
+    }
     if (existing.isMinimized()) {
       existing.restore()
     }
@@ -730,10 +794,9 @@ function createSessionChatWindow(sessionId: string) {
     autoHideMenuBar: true
   })
 
-  const sessionParam = `sessionId=${encodeURIComponent(normalizedSessionId)}`
+  loadSessionChatWindowContent(win, normalizedSessionId, normalizedSource, options)
-  if (process.env.VITE_DEV_SERVER_URL) {
-    win.loadURL(`${process.env.VITE_DEV_SERVER_URL}#/chat-window?${sessionParam}`)
 
+  if (process.env.VITE_DEV_SERVER_URL) {
     win.webContents.on('before-input-event', (event, input) => {
       if (input.key === 'F12' || (input.control && input.shift && input.key === 'I')) {
         if (win.webContents.isDevToolsOpened()) {
@@ -744,10 +807,6 @@ function createSessionChatWindow(sessionId: string) {
         event.preventDefault()
       }
     })
-  } else {
-    win.loadFile(join(__dirname, '../dist/index.html'), {
-      hash: `/chat-window?${sessionParam}`
-    })
   }
 
   win.once('ready-to-show', () => {
@@ -759,10 +818,12 @@ function createSessionChatWindow(sessionId: string) {
     const tracked = sessionChatWindows.get(normalizedSessionId)
     if (tracked === win) {
       sessionChatWindows.delete(normalizedSessionId)
+      sessionChatWindowSources.delete(normalizedSessionId)
     }
   })
 
   sessionChatWindows.set(normalizedSessionId, win)
+  sessionChatWindowSources.set(normalizedSessionId, normalizedSource)
   return win
 }
 
@@ -1071,8 +1132,8 @@ function registerIpcHandlers() {
   })
 
   // 打开会话聊天窗口（同会话仅保留一个窗口并聚焦）
-  ipcMain.handle('window:openSessionChatWindow', (_, sessionId: string) => {
+  ipcMain.handle('window:openSessionChatWindow', (_, sessionId: string, options?: OpenSessionChatWindowOptions) => {
-    const win = createSessionChatWindow(sessionId)
+    const win = createSessionChatWindow(sessionId, options)
     return Boolean(win)
   })
 
@@ -1410,6 +1471,7 @@ function registerIpcHandlers() {
     forceRefresh?: boolean
     allowStaleCache?: boolean
     preferAccurateSpecialTypes?: boolean
+    cacheOnly?: boolean
   }) => {
     return chatService.getExportSessionStats(sessionIds, options)
   })
@@ -1463,6 +1525,10 @@ function registerIpcHandlers() {
     return snsService.getSnsUsernames()
   })
 
+  ipcMain.handle('sns:getUserPostCounts', async () => {
+    return snsService.getUserPostCounts()
+  })
+
   ipcMain.handle('sns:getExportStats', async () => {
     return snsService.getExportStats()
   })
@@ -1471,6 +1537,10 @@ function registerIpcHandlers() {
     return snsService.getExportStatsFast()
   })
 
+  ipcMain.handle('sns:getUserPostStats', async (_, username: string) => {
+    return snsService.getUserPostStats(username)
+  })
+
   ipcMain.handle('sns:debugResource', async (_, url: string) => {
     return snsService.debugResource(url)
   })
@@ -2373,6 +2443,9 @@ app.whenReady().then(async () => {
 })
 
 app.on('before-quit', async () => {
+  isAppQuitting = true
+  // 通知窗使用 hide 而非 close，退出时主动销毁，避免残留窗口阻塞进程退出。
+  destroyNotificationWindow()
   // 停止 HTTP 服务器，释放 TCP 端口占用，避免进程无法退出
   try { await httpService.stop() } catch {}
   // 终止 wcdb Worker 线程，避免线程阻止进程退出

electron/preload.ts

@@ -99,8 +99,16 @@ contextBridge.exposeInMainWorld('electronAPI', {
       ipcRenderer.invoke('window:openImageViewerWindow', imagePath, liveVideoPath),
     openChatHistoryWindow: (sessionId: string, messageId: number) =>
       ipcRenderer.invoke('window:openChatHistoryWindow', sessionId, messageId),
-    openSessionChatWindow: (sessionId: string) =>
+    openSessionChatWindow: (
-      ipcRenderer.invoke('window:openSessionChatWindow', sessionId)
+      sessionId: string,
+      options?: {
+        source?: 'chat' | 'export'
+        initialDisplayName?: string
+        initialAvatarUrl?: string
+        initialContactType?: 'friend' | 'group' | 'official' | 'former_friend' | 'other'
+      }
+    ) =>
+      ipcRenderer.invoke('window:openSessionChatWindow', sessionId, options)
   },
 
   // 数据库路径
@@ -174,7 +182,13 @@ contextBridge.exposeInMainWorld('electronAPI', {
     getSessionDetailExtra: (sessionId: string) => ipcRenderer.invoke('chat:getSessionDetailExtra', sessionId),
     getExportSessionStats: (
       sessionIds: string[],
-      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean; preferAccurateSpecialTypes?: boolean }
+      options?: {
+        includeRelations?: boolean
+        forceRefresh?: boolean
+        allowStaleCache?: boolean
+        preferAccurateSpecialTypes?: boolean
+        cacheOnly?: boolean
+      }
     ) => ipcRenderer.invoke('chat:getExportSessionStats', sessionIds, options),
     getGroupMyMessageCountHint: (chatroomId: string) =>
       ipcRenderer.invoke('chat:getGroupMyMessageCountHint', chatroomId),
@@ -339,8 +353,10 @@ contextBridge.exposeInMainWorld('electronAPI', {
     getTimeline: (limit: number, offset: number, usernames?: string[], keyword?: string, startTime?: number, endTime?: number) =>
       ipcRenderer.invoke('sns:getTimeline', limit, offset, usernames, keyword, startTime, endTime),
     getSnsUsernames: () => ipcRenderer.invoke('sns:getSnsUsernames'),
+    getUserPostCounts: () => ipcRenderer.invoke('sns:getUserPostCounts'),
     getExportStatsFast: () => ipcRenderer.invoke('sns:getExportStatsFast'),
     getExportStats: () => ipcRenderer.invoke('sns:getExportStats'),
+    getUserPostStats: (username: string) => ipcRenderer.invoke('sns:getUserPostStats', username),
     debugResource: (url: string) => ipcRenderer.invoke('sns:debugResource', url),
     proxyImage: (payload: { url: string; key?: string | number }) => ipcRenderer.invoke('sns:proxyImage', payload),
     downloadImage: (payload: { url: string; key?: string | number }) => ipcRenderer.invoke('sns:downloadImage', payload),

electron/services/chatService.ts

@@ -164,6 +164,7 @@ interface ExportSessionStatsOptions {
   forceRefresh?: boolean
   allowStaleCache?: boolean
   preferAccurateSpecialTypes?: boolean
+  cacheOnly?: boolean
 }
 
 interface ExportSessionStatsCacheMeta {
@@ -5209,39 +5210,36 @@ class ChatService {
         return { success: true, detail: cachedDetail.detail }
       }
 
-      const [tableStatsResult, statsResult] = await Promise.allSettled([
+      const tableStatsResult = await wcdbService.getMessageTableStats(normalizedSessionId)
-        wcdbService.getMessageTableStats(normalizedSessionId),
-        (async (): Promise<ExportSessionStats | null> => {
-          const cachedStats = this.getSessionStatsCacheEntry(normalizedSessionId)
-          if (cachedStats && this.supportsRequestedRelation(cachedStats.entry, false)) {
-            return this.fromSessionStatsCacheStats(cachedStats.entry.stats)
-          }
-          const myWxid = this.configService.get('myWxid') || ''
-          const selfIdentitySet = new Set<string>(this.buildIdentityKeys(myWxid))
-          const stats = await this.getOrComputeSessionExportStats(normalizedSessionId, false, selfIdentitySet)
-          this.setSessionStatsCacheEntry(normalizedSessionId, stats, false)
-          return stats
-        })()
-      ])
-
-      const statsSnapshot = statsResult.status === 'fulfilled'
-        ? statsResult.value
-        : null
-      const firstMessageTime = statsSnapshot && Number.isFinite(statsSnapshot.firstTimestamp)
-        ? Math.max(0, Math.floor(statsSnapshot.firstTimestamp as number))
-        : undefined
-      const latestMessageTime = statsSnapshot && Number.isFinite(statsSnapshot.lastTimestamp)
-        ? Math.max(0, Math.floor(statsSnapshot.lastTimestamp as number))
-        : undefined
 
       const messageTables: { dbName: string; tableName: string; count: number }[] = []
-      if (tableStatsResult.status === 'fulfilled' && tableStatsResult.value.success && tableStatsResult.value.tables) {
+      let firstMessageTime: number | undefined
-        for (const row of tableStatsResult.value.tables) {
+      let latestMessageTime: number | undefined
+      if (tableStatsResult.success && tableStatsResult.tables) {
+        for (const row of tableStatsResult.tables) {
           messageTables.push({
             dbName: basename(row.db_path || ''),
             tableName: row.table_name || '',
             count: parseInt(row.count || '0', 10)
           })
+
+          const firstTs = this.getRowInt(
+            row,
+            ['first_timestamp', 'firstTimestamp', 'first_time', 'firstTime', 'min_create_time', 'minCreateTime'],
+            0
+          )
+          if (firstTs > 0 && (firstMessageTime === undefined || firstTs < firstMessageTime)) {
+            firstMessageTime = firstTs
+          }
+
+          const lastTs = this.getRowInt(
+            row,
+            ['last_timestamp', 'lastTimestamp', 'last_time', 'lastTime', 'max_create_time', 'maxCreateTime'],
+            0
+          )
+          if (lastTs > 0 && (latestMessageTime === undefined || lastTs > latestMessageTime)) {
+            latestMessageTime = lastTs
+          }
         }
       }
 
@@ -5357,6 +5355,7 @@ class ChatService {
       const forceRefresh = options.forceRefresh === true
       const allowStaleCache = options.allowStaleCache === true
       const preferAccurateSpecialTypes = options.preferAccurateSpecialTypes === true
+      const cacheOnly = options.cacheOnly === true
 
       const normalizedSessionIds = Array.from(
         new Set(
@@ -5380,10 +5379,10 @@ class ChatService {
           ? this.getGroupMyMessageCountHintEntry(sessionId)
           : null
         const cachedResult = this.getSessionStatsCacheEntry(sessionId)
-        if (!forceRefresh && !preferAccurateSpecialTypes) {
+        const canUseCache = cacheOnly || (!forceRefresh && !preferAccurateSpecialTypes)
-          if (cachedResult && this.supportsRequestedRelation(cachedResult.entry, includeRelations)) {
+        if (canUseCache && cachedResult && this.supportsRequestedRelation(cachedResult.entry, includeRelations)) {
           const stale = now - cachedResult.entry.updatedAt > this.sessionStatsCacheTtlMs
-            if (!stale || allowStaleCache) {
+          if (!stale || allowStaleCache || cacheOnly) {
             resultMap[sessionId] = this.fromSessionStatsCacheStats(cachedResult.entry.stats)
             if (groupMyMessagesHint && Number.isFinite(groupMyMessagesHint.entry.messageCount)) {
               resultMap[sessionId].groupMyMessages = groupMyMessagesHint.entry.messageCount
@@ -5400,11 +5399,13 @@ class ChatService {
             continue
           }
         }
-          // allowStaleCache 仅对“已有缓存”生效；无缓存会话仍需进入计算流程。
+        // allowStaleCache/cacheOnly 仅对“已有缓存”生效；无缓存会话不会直接算重查询。
-          if (allowStaleCache && cachedResult) {
+        if (canUseCache && allowStaleCache && cachedResult) {
           needsRefreshSet.add(sessionId)
           continue
         }
+        if (cacheOnly) {
+          continue
         }
         pendingSessionIds.push(sessionId)
       }

electron/services/snsService.ts

@@ -292,7 +292,9 @@ class SnsService {
     private contactCache: ContactCacheService
     private imageCache = new Map<string, string>()
     private exportStatsCache: { totalPosts: number; totalFriends: number; myPosts: number | null; updatedAt: number } | null = null
+    private userPostCountsCache: { counts: Record<string, number>; updatedAt: number } | null = null
     private readonly exportStatsCacheTtlMs = 5 * 60 * 1000
+    private readonly userPostCountsCacheTtlMs = 5 * 60 * 1000
     private lastTimelineFallbackAt = 0
     private readonly timelineFallbackCooldownMs = 3 * 60 * 1000
 
@@ -864,6 +866,84 @@ class SnsService {
         })
     }
 
+    private async getUserPostCountsFromTimeline(): Promise<Record<string, number>> {
+        const pageSize = 500
+        const counts: Record<string, number> = {}
+        let offset = 0
+
+        for (let round = 0; round < 2000; round++) {
+            const result = await wcdbService.getSnsTimeline(pageSize, offset, undefined, undefined, 0, 0)
+            if (!result.success || !Array.isArray(result.timeline)) {
+                throw new Error(result.error || '获取朋友圈用户总条数失败')
+            }
+
+            const rows = result.timeline
+            if (rows.length === 0) break
+
+            for (const row of rows) {
+                const username = this.pickTimelineUsername(row)
+                if (!username) continue
+                counts[username] = (counts[username] || 0) + 1
+            }
+
+            if (rows.length < pageSize) break
+            offset += rows.length
+        }
+
+        return counts
+    }
+
+    async getUserPostCounts(options?: {
+        preferCache?: boolean
+    }): Promise<{ success: boolean; counts?: Record<string, number>; error?: string }> {
+        const preferCache = options?.preferCache ?? true
+        const now = Date.now()
+
+        try {
+            if (
+                preferCache &&
+                this.userPostCountsCache &&
+                now - this.userPostCountsCache.updatedAt <= this.userPostCountsCacheTtlMs
+            ) {
+                return { success: true, counts: this.userPostCountsCache.counts }
+            }
+
+            const counts = await this.getUserPostCountsFromTimeline()
+            this.userPostCountsCache = {
+                counts,
+                updatedAt: Date.now()
+            }
+            return { success: true, counts }
+        } catch (error) {
+            console.error('[SnsService] getUserPostCounts failed:', error)
+            if (this.userPostCountsCache) {
+                return { success: true, counts: this.userPostCountsCache.counts }
+            }
+            return { success: false, error: String(error) }
+        }
+    }
+
+    async getUserPostStats(username: string): Promise<{ success: boolean; data?: { username: string; totalPosts: number }; error?: string }> {
+        const normalizedUsername = this.toOptionalString(username)
+        if (!normalizedUsername) {
+            return { success: false, error: '用户名不能为空' }
+        }
+
+        const countsResult = await this.getUserPostCounts({ preferCache: true })
+        if (countsResult.success) {
+            const totalPosts = countsResult.counts?.[normalizedUsername] ?? 0
+            return {
+                success: true,
+                data: {
+                    username: normalizedUsername,
+                    totalPosts: Math.max(0, Number(totalPosts || 0))
+                }
+            }
+        }
+
+        return { success: false, error: countsResult.error || '统计单个好友朋友圈失败' }
+    }
+
     // 安装朋友圈删除拦截
     async installSnsBlockDeleteTrigger(): Promise<{ success: boolean; alreadyInstalled?: boolean; error?: string }> {
         return wcdbService.installSnsBlockDeleteTrigger()
@@ -881,7 +961,12 @@ class SnsService {
 
     // 从数据库直接删除朋友圈记录
     async deleteSnsPost(postId: string): Promise<{ success: boolean; error?: string }> {
-        return wcdbService.deleteSnsPost(postId)
+        const result = await wcdbService.deleteSnsPost(postId)
+        if (result.success) {
+            this.userPostCountsCache = null
+            this.exportStatsCache = null
+        }
+        return result
     }
 
     /**

electron/windows/notificationWindow.ts

@@ -5,6 +5,28 @@ import { ConfigService } from '../services/config'
 let notificationWindow: BrowserWindow | null = null
 let closeTimer: NodeJS.Timeout | null = null
 
+export function destroyNotificationWindow() {
+    if (closeTimer) {
+        clearTimeout(closeTimer)
+        closeTimer = null
+    }
+    lastNotificationData = null
+
+    if (!notificationWindow || notificationWindow.isDestroyed()) {
+        notificationWindow = null
+        return
+    }
+
+    const win = notificationWindow
+    notificationWindow = null
+
+    try {
+        win.destroy()
+    } catch (error) {
+        console.warn('[NotificationWindow] Failed to destroy window:', error)
+    }
+}
+
 export function createNotificationWindow() {
     if (notificationWindow && !notificationWindow.isDestroyed()) {
         return notificationWindow

src/App.tsx

@@ -405,8 +405,22 @@ function App() {
 
   // 独立会话聊天窗口（仅显示聊天内容区域）
   if (isStandaloneChatWindow) {
-    const sessionId = new URLSearchParams(location.search).get('sessionId') || ''
+    const params = new URLSearchParams(location.search)
-    return <ChatPage standaloneSessionWindow initialSessionId={sessionId} />
+    const sessionId = params.get('sessionId') || ''
+    const standaloneSource = params.get('source')
+    const standaloneInitialDisplayName = params.get('initialDisplayName')
+    const standaloneInitialAvatarUrl = params.get('initialAvatarUrl')
+    const standaloneInitialContactType = params.get('initialContactType')
+    return (
+      <ChatPage
+        standaloneSessionWindow
+        initialSessionId={sessionId}
+        standaloneSource={standaloneSource}
+        standaloneInitialDisplayName={standaloneInitialDisplayName}
+        standaloneInitialAvatarUrl={standaloneInitialAvatarUrl}
+        standaloneInitialContactType={standaloneInitialContactType}
+      />
+    )
   }
 
   // 独立通知窗口

src/components/Export/ExportDateRangeDialog.scss

@@ -0,0 +1,254 @@
+.export-date-range-dialog-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.35);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 16px;
+  z-index: 2400;
+}
+
+.export-date-range-dialog {
+  width: min(480px, calc(100vw - 32px));
+  max-height: calc(100vh - 64px);
+  overflow-y: auto;
+  border-radius: 12px;
+  border: 1px solid var(--border-color);
+  background: var(--bg-secondary-solid, var(--bg-primary));
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.export-date-range-dialog-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+
+  h4 {
+    margin: 0;
+    font-size: 14px;
+    color: var(--text-primary);
+  }
+}
+
+.export-date-range-dialog-close-btn {
+  border: 1px solid var(--border-color);
+  background: var(--bg-secondary);
+  border-radius: 8px;
+  width: 30px;
+  height: 30px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  color: var(--text-secondary);
+}
+
+.export-date-range-preset-list {
+  display: flex;
+  flex-wrap: nowrap;
+  gap: 4px;
+  overflow-x: auto;
+  padding-bottom: 2px;
+
+  &::-webkit-scrollbar {
+    height: 4px;
+  }
+}
+
+.export-date-range-preset-item {
+  flex: 0 0 auto;
+  border: 1px solid var(--border-color);
+  border-radius: 8px;
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  min-height: 30px;
+  padding: 0 8px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 4px;
+  font-size: 11px;
+  cursor: pointer;
+  white-space: nowrap;
+
+  &.active {
+    border-color: var(--primary);
+    background: rgba(var(--primary-rgb), 0.08);
+    color: var(--primary);
+  }
+}
+
+.export-date-range-mode-banner {
+  border-radius: 8px;
+  padding: 6px 8px;
+  font-size: 11px;
+  line-height: 1.4;
+  border: 1px solid var(--border-color);
+  background: var(--bg-secondary);
+  color: var(--text-secondary);
+
+  &.range {
+    border-color: rgba(var(--primary-rgb), 0.4);
+    background: rgba(var(--primary-rgb), 0.1);
+    color: var(--primary);
+  }
+}
+
+.export-date-range-calendar-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 8px;
+}
+
+.export-date-range-calendar-panel {
+  border: 1px solid var(--border-color);
+  border-radius: 8px;
+  background: var(--bg-secondary);
+  padding: 7px;
+}
+
+.export-date-range-calendar-panel-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+  gap: 8px;
+}
+
+.export-date-range-calendar-date-label {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+
+  span {
+    font-size: 11px;
+    color: var(--text-secondary);
+  }
+}
+
+.export-date-range-date-input {
+  width: 100%;
+  min-width: 0;
+  border-radius: 6px;
+  border: 1px solid var(--border-color);
+  background: var(--bg-primary);
+  color: var(--text-primary);
+  height: 24px;
+  padding: 0 7px;
+  font-size: 11px;
+
+  &.invalid {
+    border-color: #e84d4d;
+    box-shadow: 0 0 0 1px rgba(232, 77, 77, 0.2);
+  }
+}
+
+.export-date-range-calendar-nav {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  font-size: 11px;
+  color: var(--text-primary);
+
+  button {
+    width: 20px;
+    height: 20px;
+    border-radius: 5px;
+    border: 1px solid var(--border-color);
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    cursor: pointer;
+    padding: 0;
+    line-height: 1;
+  }
+}
+
+.export-date-range-calendar-weekdays {
+  margin-top: 6px;
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 2px;
+
+  span {
+    text-align: center;
+    font-size: 10px;
+    color: var(--text-tertiary);
+  }
+}
+
+.export-date-range-calendar-days {
+  margin-top: 4px;
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 2px;
+}
+
+.export-date-range-calendar-day {
+  border: 1px solid transparent;
+  border-radius: 6px;
+  min-height: 20px;
+  background: var(--bg-primary);
+  color: var(--text-primary);
+  font-size: 10px;
+  cursor: pointer;
+  padding: 0;
+
+  &.outside {
+    color: var(--text-quaternary);
+    opacity: 0.75;
+  }
+
+  &.selected {
+    border-color: var(--primary);
+    background: rgba(var(--primary-rgb), 0.14);
+    color: var(--primary);
+    font-weight: 600;
+  }
+}
+
+.export-date-range-dialog-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+}
+
+.export-date-range-dialog-btn {
+  border-radius: 8px;
+  padding: 7px 12px;
+  font-size: 12px;
+  font-weight: 600;
+  border: 1px solid var(--border-color);
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+
+  &.primary {
+    border-color: var(--primary);
+    background: var(--primary);
+    color: #fff;
+
+    &:hover {
+      background: var(--primary-hover);
+    }
+  }
+
+  &.secondary {
+    background: var(--bg-secondary);
+    color: var(--text-primary);
+
+    &:hover {
+      border-color: var(--primary);
+      color: var(--primary);
+    }
+  }
+}
+
+@media (max-width: 860px) {
+  .export-date-range-calendar-grid {
+    grid-template-columns: 1fr;
+  }
+}

src/components/Export/ExportDateRangeDialog.tsx

@@ -0,0 +1,340 @@
+import { useCallback, useEffect, useMemo, useState } from 'react'
+import { createPortal } from 'react-dom'
+import { Check, X } from 'lucide-react'
+import {
+  EXPORT_DATE_RANGE_PRESETS,
+  WEEKDAY_SHORT_LABELS,
+  addMonths,
+  buildCalendarCells,
+  cloneExportDateRangeSelection,
+  createDateRangeByPreset,
+  createDefaultDateRange,
+  formatCalendarMonthTitle,
+  formatDateInputValue,
+  isSameDay,
+  parseDateInputValue,
+  startOfDay,
+  endOfDay,
+  toMonthStart,
+  type ExportDateRangePreset,
+  type ExportDateRangeSelection
+} from '../../utils/exportDateRange'
+import './ExportDateRangeDialog.scss'
+
+interface ExportDateRangeDialogProps {
+  open: boolean
+  value: ExportDateRangeSelection
+  title?: string
+  onClose: () => void
+  onConfirm: (value: ExportDateRangeSelection) => void
+}
+
+interface ExportDateRangeDialogDraft extends ExportDateRangeSelection {
+  startPanelMonth: Date
+  endPanelMonth: Date
+}
+
+const buildDialogDraft = (value: ExportDateRangeSelection): ExportDateRangeDialogDraft => ({
+  ...cloneExportDateRangeSelection(value),
+  startPanelMonth: toMonthStart(value.dateRange.start),
+  endPanelMonth: toMonthStart(value.dateRange.end)
+})
+
+export function ExportDateRangeDialog({
+  open,
+  value,
+  title = '时间范围设置',
+  onClose,
+  onConfirm
+}: ExportDateRangeDialogProps) {
+  const [draft, setDraft] = useState<ExportDateRangeDialogDraft>(() => buildDialogDraft(value))
+  const [dateInput, setDateInput] = useState({
+    start: formatDateInputValue(value.dateRange.start),
+    end: formatDateInputValue(value.dateRange.end)
+  })
+  const [dateInputError, setDateInputError] = useState({ start: false, end: false })
+
+  useEffect(() => {
+    if (!open) return
+    const nextDraft = buildDialogDraft(value)
+    setDraft(nextDraft)
+    setDateInput({
+      start: formatDateInputValue(nextDraft.dateRange.start),
+      end: formatDateInputValue(nextDraft.dateRange.end)
+    })
+    setDateInputError({ start: false, end: false })
+  }, [open, value])
+
+  useEffect(() => {
+    if (!open) return
+    setDateInput({
+      start: formatDateInputValue(draft.dateRange.start),
+      end: formatDateInputValue(draft.dateRange.end)
+    })
+    setDateInputError({ start: false, end: false })
+  }, [draft.dateRange.end.getTime(), draft.dateRange.start.getTime(), open])
+
+  const applyPreset = useCallback((preset: Exclude<ExportDateRangePreset, 'custom'>) => {
+    if (preset === 'all') {
+      const previewRange = createDefaultDateRange()
+      setDraft(prev => ({
+        ...prev,
+        preset,
+        useAllTime: true,
+        dateRange: previewRange,
+        startPanelMonth: toMonthStart(previewRange.start),
+        endPanelMonth: toMonthStart(previewRange.end)
+      }))
+      return
+    }
+
+    const range = createDateRangeByPreset(preset)
+    setDraft(prev => ({
+      ...prev,
+      preset,
+      useAllTime: false,
+      dateRange: range,
+      startPanelMonth: toMonthStart(range.start),
+      endPanelMonth: toMonthStart(range.end)
+    }))
+  }, [])
+
+  const updateDraftStart = useCallback((targetDate: Date) => {
+    const start = startOfDay(targetDate)
+    setDraft(prev => {
+      const nextEnd = prev.dateRange.end < start ? endOfDay(start) : prev.dateRange.end
+      return {
+        ...prev,
+        preset: 'custom',
+        useAllTime: false,
+        dateRange: {
+          start,
+          end: nextEnd
+        },
+        startPanelMonth: toMonthStart(start),
+        endPanelMonth: toMonthStart(nextEnd)
+      }
+    })
+  }, [])
+
+  const updateDraftEnd = useCallback((targetDate: Date) => {
+    const end = endOfDay(targetDate)
+    setDraft(prev => {
+      const nextStart = prev.useAllTime ? startOfDay(targetDate) : prev.dateRange.start
+      const nextEnd = end < nextStart ? endOfDay(nextStart) : end
+      return {
+        ...prev,
+        preset: 'custom',
+        useAllTime: false,
+        dateRange: {
+          start: nextStart,
+          end: nextEnd
+        },
+        startPanelMonth: toMonthStart(nextStart),
+        endPanelMonth: toMonthStart(nextEnd)
+      }
+    })
+  }, [])
+
+  const commitStartFromInput = useCallback(() => {
+    const parsed = parseDateInputValue(dateInput.start)
+    if (!parsed) {
+      setDateInputError(prev => ({ ...prev, start: true }))
+      return
+    }
+    setDateInputError(prev => ({ ...prev, start: false }))
+    updateDraftStart(parsed)
+  }, [dateInput.start, updateDraftStart])
+
+  const commitEndFromInput = useCallback(() => {
+    const parsed = parseDateInputValue(dateInput.end)
+    if (!parsed) {
+      setDateInputError(prev => ({ ...prev, end: true }))
+      return
+    }
+    setDateInputError(prev => ({ ...prev, end: false }))
+    updateDraftEnd(parsed)
+  }, [dateInput.end, updateDraftEnd])
+
+  const shiftPanelMonth = useCallback((panel: 'start' | 'end', delta: number) => {
+    setDraft(prev => (
+      panel === 'start'
+        ? { ...prev, startPanelMonth: addMonths(prev.startPanelMonth, delta) }
+        : { ...prev, endPanelMonth: addMonths(prev.endPanelMonth, delta) }
+    ))
+  }, [])
+
+  const isRangeModeActive = !draft.useAllTime
+  const modeText = isRangeModeActive
+    ? '当前导出模式：按时间范围导出'
+    : '当前导出模式：全部时间导出（选择下方日期将切换为按时间范围导出）'
+
+  const isPresetActive = useCallback((preset: ExportDateRangePreset): boolean => {
+    if (preset === 'all') return draft.useAllTime
+    return !draft.useAllTime && draft.preset === preset
+  }, [draft])
+
+  const startPanelCells = useMemo(() => buildCalendarCells(draft.startPanelMonth), [draft.startPanelMonth])
+  const endPanelCells = useMemo(() => buildCalendarCells(draft.endPanelMonth), [draft.endPanelMonth])
+
+  if (!open) return null
+
+  return createPortal(
+    <div className="export-date-range-dialog-overlay" onClick={onClose}>
+      <div className="export-date-range-dialog" role="dialog" aria-modal="true" onClick={(event) => event.stopPropagation()}>
+        <div className="export-date-range-dialog-header">
+          <h4>{title}</h4>
+          <button
+            type="button"
+            className="export-date-range-dialog-close-btn"
+            onClick={onClose}
+            aria-label="关闭时间范围设置"
+          >
+            <X size={14} />
+          </button>
+        </div>
+
+        <div className="export-date-range-preset-list">
+          {EXPORT_DATE_RANGE_PRESETS.map((preset) => {
+            const active = isPresetActive(preset.value)
+            return (
+              <button
+                key={preset.value}
+                type="button"
+                className={`export-date-range-preset-item ${active ? 'active' : ''}`}
+                onClick={() => applyPreset(preset.value)}
+              >
+                <span>{preset.label}</span>
+                {active && <Check size={14} />}
+              </button>
+            )
+          })}
+        </div>
+
+        <div className={`export-date-range-mode-banner ${isRangeModeActive ? 'range' : 'all'}`}>
+          {modeText}
+        </div>
+
+        <div className="export-date-range-calendar-grid">
+          <section className="export-date-range-calendar-panel">
+            <div className="export-date-range-calendar-panel-header">
+              <div className="export-date-range-calendar-date-label">
+                <span>起始日期</span>
+                <input
+                  type="text"
+                  className={`export-date-range-date-input ${dateInputError.start ? 'invalid' : ''}`}
+                  value={dateInput.start}
+                  placeholder="YYYY-MM-DD"
+                  onChange={(event) => {
+                    const nextValue = event.target.value
+                    setDateInput(prev => ({ ...prev, start: nextValue }))
+                    if (dateInputError.start) {
+                      setDateInputError(prev => ({ ...prev, start: false }))
+                    }
+                  }}
+                  onKeyDown={(event) => {
+                    if (event.key !== 'Enter') return
+                    event.preventDefault()
+                    commitStartFromInput()
+                  }}
+                  onBlur={commitStartFromInput}
+                />
+              </div>
+              <div className="export-date-range-calendar-nav">
+                <button type="button" onClick={() => shiftPanelMonth('start', -1)} aria-label="上个月">‹</button>
+                <span>{formatCalendarMonthTitle(draft.startPanelMonth)}</span>
+                <button type="button" onClick={() => shiftPanelMonth('start', 1)} aria-label="下个月">›</button>
+              </div>
+            </div>
+            <div className="export-date-range-calendar-weekdays">
+              {WEEKDAY_SHORT_LABELS.map(label => (
+                <span key={`start-weekday-${label}`}>{label}</span>
+              ))}
+            </div>
+            <div className="export-date-range-calendar-days">
+              {startPanelCells.map((cell) => {
+                const selected = !draft.useAllTime && isSameDay(cell.date, draft.dateRange.start)
+                return (
+                  <button
+                    key={`start-${cell.date.getTime()}`}
+                    type="button"
+                    className={`export-date-range-calendar-day ${cell.inCurrentMonth ? '' : 'outside'} ${selected ? 'selected' : ''}`}
+                    onClick={() => updateDraftStart(cell.date)}
+                  >
+                    {cell.date.getDate()}
+                  </button>
+                )
+              })}
+            </div>
+          </section>
+
+          <section className="export-date-range-calendar-panel">
+            <div className="export-date-range-calendar-panel-header">
+              <div className="export-date-range-calendar-date-label">
+                <span>截止日期</span>
+                <input
+                  type="text"
+                  className={`export-date-range-date-input ${dateInputError.end ? 'invalid' : ''}`}
+                  value={dateInput.end}
+                  placeholder="YYYY-MM-DD"
+                  onChange={(event) => {
+                    const nextValue = event.target.value
+                    setDateInput(prev => ({ ...prev, end: nextValue }))
+                    if (dateInputError.end) {
+                      setDateInputError(prev => ({ ...prev, end: false }))
+                    }
+                  }}
+                  onKeyDown={(event) => {
+                    if (event.key !== 'Enter') return
+                    event.preventDefault()
+                    commitEndFromInput()
+                  }}
+                  onBlur={commitEndFromInput}
+                />
+              </div>
+              <div className="export-date-range-calendar-nav">
+                <button type="button" onClick={() => shiftPanelMonth('end', -1)} aria-label="上个月">‹</button>
+                <span>{formatCalendarMonthTitle(draft.endPanelMonth)}</span>
+                <button type="button" onClick={() => shiftPanelMonth('end', 1)} aria-label="下个月">›</button>
+              </div>
+            </div>
+            <div className="export-date-range-calendar-weekdays">
+              {WEEKDAY_SHORT_LABELS.map(label => (
+                <span key={`end-weekday-${label}`}>{label}</span>
+              ))}
+            </div>
+            <div className="export-date-range-calendar-days">
+              {endPanelCells.map((cell) => {
+                const selected = !draft.useAllTime && isSameDay(cell.date, draft.dateRange.end)
+                return (
+                  <button
+                    key={`end-${cell.date.getTime()}`}
+                    type="button"
+                    className={`export-date-range-calendar-day ${cell.inCurrentMonth ? '' : 'outside'} ${selected ? 'selected' : ''}`}
+                    onClick={() => updateDraftEnd(cell.date)}
+                  >
+                    {cell.date.getDate()}
+                  </button>
+                )
+              })}
+            </div>
+          </section>
+        </div>
+
+        <div className="export-date-range-dialog-actions">
+          <button type="button" className="export-date-range-dialog-btn secondary" onClick={onClose}>
+            取消
+          </button>
+          <button
+            type="button"
+            className="export-date-range-dialog-btn primary"
+            onClick={() => onConfirm(cloneExportDateRangeSelection(draft))}
+          >
+            确认
+          </button>
+        </div>
+      </div>
+    </div>,
+    document.body
+  )
+}

src/components/Export/ExportDefaultsSettingsForm.scss

@@ -0,0 +1,459 @@
+.export-defaults-settings-form {
+  .form-group {
+    margin-bottom: 20px;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  label {
+    display: block;
+    font-size: 14px;
+    font-weight: 500;
+    color: var(--text-primary);
+    margin-bottom: 2px;
+  }
+
+  .form-hint {
+    display: block;
+    font-size: 12px;
+    color: var(--text-tertiary);
+    margin-bottom: 8px;
+  }
+
+  .select-field {
+    position: relative;
+    margin-bottom: 10px;
+  }
+
+  .select-trigger {
+    width: 100%;
+    padding: 10px 16px;
+    border: 1px solid var(--border-color);
+    border-radius: 9999px;
+    font-size: 14px;
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 8px;
+    cursor: pointer;
+    transition: all 0.2s;
+
+    &:hover {
+      border-color: var(--text-tertiary);
+    }
+
+    &.open {
+      border-color: var(--primary);
+      box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
+    }
+  }
+
+  .select-value {
+    flex: 1;
+    min-width: 0;
+    text-align: left;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .select-dropdown {
+    position: absolute;
+    top: calc(100% + 6px);
+    left: 0;
+    right: 0;
+    background: color-mix(in srgb, var(--bg-primary) 85%, var(--bg-secondary));
+    border: 1px solid var(--border-color);
+    border-radius: 12px;
+    padding: 6px;
+    box-shadow: var(--shadow-md);
+    z-index: 120;
+    max-height: 320px;
+    overflow-y: auto;
+    backdrop-filter: blur(14px);
+    -webkit-backdrop-filter: blur(14px);
+  }
+
+  .select-option {
+    width: 100%;
+    text-align: left;
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    padding: 10px 12px;
+    border: none;
+    border-radius: 10px;
+    background: transparent;
+    cursor: pointer;
+    transition: all 0.15s;
+    color: var(--text-primary);
+    font-size: 14px;
+
+    &:hover {
+      background: var(--bg-tertiary);
+    }
+
+    &.active {
+      background: color-mix(in srgb, var(--primary) 12%, transparent);
+      color: var(--primary);
+    }
+  }
+
+  .option-label {
+    font-weight: 500;
+  }
+
+  .option-desc {
+    font-size: 12px;
+    color: var(--text-tertiary);
+  }
+
+  .format-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(156px, 1fr));
+    gap: 6px;
+    width: 100%;
+    margin-bottom: 10px;
+  }
+
+  .format-card {
+    width: 100%;
+    min-height: 0;
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    padding: 8px 10px;
+    text-align: left;
+    background: var(--bg-primary);
+    cursor: pointer;
+    display: flex;
+    flex-direction: column;
+    align-items: flex-start;
+    justify-content: flex-start;
+    transition: border-color 0.2s ease, background 0.2s ease;
+
+    &:hover {
+      border-color: var(--text-tertiary);
+    }
+
+    &.active {
+      border-color: var(--primary);
+      background: rgba(var(--primary-rgb), 0.08);
+    }
+  }
+
+  .format-label {
+    font-size: 13px;
+    font-weight: 600;
+    color: var(--text-primary);
+    line-height: 1.35;
+  }
+
+  .format-desc {
+    margin-top: 1px;
+    font-size: 11px;
+    color: var(--text-tertiary);
+    line-height: 1.35;
+  }
+
+  .select-option.active .option-desc {
+    color: var(--primary);
+  }
+
+  .settings-time-range-field {
+    margin-bottom: 10px;
+  }
+
+  .settings-time-range-trigger {
+    width: 100%;
+    padding: 10px 16px;
+    border: 1px solid var(--border-color);
+    border-radius: 9999px;
+    font-size: 14px;
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 8px;
+    cursor: pointer;
+    transition: all 0.2s;
+
+    &:hover {
+      border-color: rgba(var(--primary-rgb), 0.45);
+      color: var(--primary);
+    }
+
+    &.open {
+      border-color: var(--primary);
+      box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
+    }
+  }
+
+  .settings-time-range-value {
+    flex: 1;
+    min-width: 0;
+    text-align: left;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .settings-time-range-arrow {
+    color: var(--text-tertiary);
+    font-weight: 700;
+    line-height: 1;
+  }
+
+  .log-toggle-line {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+    margin-bottom: 10px;
+    padding: 10px 14px;
+    border: 1px solid var(--border-color);
+    border-radius: 14px;
+    background: var(--bg-primary);
+  }
+
+  .media-default-grid {
+    width: 100%;
+    display: flex;
+    align-items: center;
+    flex-wrap: nowrap;
+    gap: 12px;
+    margin-bottom: 10px;
+
+    label {
+      display: inline-flex;
+      align-items: center;
+      gap: 5px;
+      margin-bottom: 0;
+      font-size: 13px;
+      line-height: 1;
+      font-weight: 500;
+      color: var(--text-primary);
+      cursor: pointer;
+      white-space: nowrap;
+    }
+
+    input[type='checkbox'] {
+      margin: 0;
+      accent-color: var(--primary);
+    }
+  }
+
+  .log-status {
+    font-size: 13px;
+    color: var(--text-secondary);
+  }
+
+  .concurrency-inline-options {
+    width: 100%;
+    display: grid;
+    grid-template-columns: repeat(6, minmax(0, 1fr));
+    gap: 6px;
+    margin-bottom: 10px;
+  }
+
+  .concurrency-option {
+    border: 1px solid var(--border-color);
+    border-radius: 10px;
+    min-height: 38px;
+    padding: 0;
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    font-size: 14px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
+
+    &:hover {
+      border-color: var(--text-tertiary);
+    }
+
+    &.active {
+      border-color: var(--primary);
+      background: rgba(var(--primary-rgb), 0.08);
+      color: var(--primary);
+    }
+  }
+
+  .switch {
+    position: relative;
+    display: inline-flex;
+    width: 48px;
+    height: 28px;
+    cursor: pointer;
+    flex-shrink: 0;
+  }
+
+  .switch-input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+    position: absolute;
+
+    &:checked + .switch-slider {
+      background: var(--primary);
+    }
+
+    &:checked + .switch-slider::before {
+      transform: translateX(20px);
+    }
+
+    &:focus + .switch-slider {
+      box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
+    }
+  }
+
+  .switch-slider {
+    position: absolute;
+    inset: 0;
+    background: var(--bg-tertiary);
+    border: 1px solid var(--border-color);
+    border-radius: 999px;
+    transition: all 0.2s ease;
+
+    &::before {
+      content: '';
+      position: absolute;
+      width: 20px;
+      height: 20px;
+      left: 3px;
+      top: 3px;
+      border-radius: 50%;
+      background: #fff;
+      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
+      transition: transform 0.2s ease;
+    }
+  }
+
+  &.layout-split {
+    .form-group {
+      display: grid;
+      grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
+      gap: 18px;
+      align-items: center;
+      padding: 14px 0;
+      margin-bottom: 0;
+      border-bottom: 1px solid color-mix(in srgb, var(--border-color) 70%, transparent);
+    }
+
+    .form-group:last-child {
+      border-bottom: none;
+      padding-bottom: 0;
+    }
+
+    .form-group:first-child {
+      padding-top: 0;
+    }
+
+    .form-copy {
+      min-width: 0;
+    }
+
+    .form-control {
+      min-width: 0;
+      display: flex;
+      justify-content: flex-end;
+    }
+
+    .form-hint {
+      margin-bottom: 0;
+      line-height: 1.5;
+    }
+
+    .select-field,
+    .settings-time-range-field {
+      width: 100%;
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+
+    .log-toggle-line {
+      width: 100%;
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+
+    .media-default-grid {
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+
+    .concurrency-inline-options {
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+
+    .format-setting-group {
+      grid-template-columns: 1fr;
+      gap: 10px;
+      align-items: stretch;
+    }
+
+    .format-setting-group .form-control {
+      justify-content: flex-start;
+    }
+
+    .format-grid {
+      max-width: none;
+      grid-template-columns: repeat(3, minmax(0, 1fr));
+      margin-bottom: 0;
+    }
+  }
+}
+
+@media (max-width: 1024px) {
+  .export-defaults-settings-form.layout-split {
+    .media-setting-group {
+      grid-template-columns: 1fr;
+      gap: 10px;
+      align-items: stretch;
+    }
+
+    .media-setting-group .form-control {
+      justify-content: flex-start;
+    }
+
+    .media-default-grid {
+      max-width: none;
+      flex-wrap: wrap;
+    }
+  }
+}
+
+@media (max-width: 760px) {
+  .export-defaults-settings-form.layout-split {
+    .form-group {
+      grid-template-columns: 1fr;
+      gap: 10px;
+    }
+
+    .form-control {
+      justify-content: flex-start;
+    }
+
+    .select-field,
+    .settings-time-range-field,
+    .log-toggle-line,
+    .media-default-grid,
+    .concurrency-inline-options,
+    .format-grid {
+      max-width: none;
+    }
+
+    .media-default-grid {
+      flex-wrap: wrap;
+    }
+
+    .format-grid {
+      grid-template-columns: repeat(auto-fit, minmax(156px, 1fr));
+    }
+  }
+}

src/components/Export/ExportDefaultsSettingsForm.tsx

@@ -0,0 +1,389 @@
+import { useEffect, useMemo, useRef, useState } from 'react'
+import { ChevronDown } from 'lucide-react'
+import * as configService from '../../services/config'
+import { ExportDateRangeDialog } from './ExportDateRangeDialog'
+import {
+  createDefaultExportDateRangeSelection,
+  getExportDateRangeLabel,
+  resolveExportDateRangeConfig,
+  serializeExportDateRangeConfig,
+  type ExportDateRangeSelection
+} from '../../utils/exportDateRange'
+import './ExportDefaultsSettingsForm.scss'
+
+export interface ExportDefaultsSettingsPatch {
+  format?: string
+  avatars?: boolean
+  dateRange?: ExportDateRangeSelection
+  media?: configService.ExportDefaultMediaConfig
+  voiceAsText?: boolean
+  excelCompactColumns?: boolean
+  concurrency?: number
+}
+
+interface ExportDefaultsSettingsFormProps {
+  onNotify?: (text: string, success: boolean) => void
+  onDefaultsChanged?: (patch: ExportDefaultsSettingsPatch) => void
+  layout?: 'stacked' | 'split'
+}
+
+const exportFormatOptions = [
+  { value: 'excel', label: 'Excel', desc: '电子表格，适合统计分析' },
+  { value: 'json', label: 'JSON', desc: '详细格式，包含完整消息信息' },
+  { value: 'html', label: 'HTML', desc: '网页格式，可直接浏览' },
+  { value: 'txt', label: 'TXT', desc: '纯文本，通用格式' },
+  { value: 'arkme-json', label: 'Arkme JSON', desc: '紧凑 JSON，支持 sender 去重与关系统计' },
+  { value: 'chatlab', label: 'ChatLab', desc: '标准格式，支持其他软件导入' },
+  { value: 'chatlab-jsonl', label: 'ChatLab JSONL', desc: '流式格式，适合大量消息' },
+  { value: 'weclone', label: 'WeClone CSV', desc: 'WeClone 兼容字段格式（CSV）' },
+  { value: 'sql', label: 'PostgreSQL', desc: '数据库脚本，便于导入到数据库' }
+] as const
+
+const exportExcelColumnOptions = [
+  { value: 'compact', label: '精简列', desc: '序号、时间、发送者身份、消息类型、内容' },
+  { value: 'full', label: '完整列', desc: '含发送者昵称/微信ID/备注' }
+] as const
+
+const exportConcurrencyOptions = [1, 2, 3, 4, 5, 6] as const
+
+const getOptionLabel = (options: ReadonlyArray<{ value: string; label: string }>, value: string) => {
+  return options.find((option) => option.value === value)?.label ?? value
+}
+
+export function ExportDefaultsSettingsForm({
+  onNotify,
+  onDefaultsChanged,
+  layout = 'stacked'
+}: ExportDefaultsSettingsFormProps) {
+  const [showExportExcelColumnsSelect, setShowExportExcelColumnsSelect] = useState(false)
+  const [isExportDateRangeDialogOpen, setIsExportDateRangeDialogOpen] = useState(false)
+  const exportExcelColumnsDropdownRef = useRef<HTMLDivElement>(null)
+
+  const [exportDefaultFormat, setExportDefaultFormat] = useState('excel')
+  const [exportDefaultAvatars, setExportDefaultAvatars] = useState(true)
+  const [exportDefaultDateRange, setExportDefaultDateRange] = useState<ExportDateRangeSelection>(() => createDefaultExportDateRangeSelection())
+  const [exportDefaultMedia, setExportDefaultMedia] = useState<configService.ExportDefaultMediaConfig>({
+    images: true,
+    videos: true,
+    voices: true,
+    emojis: true
+  })
+  const [exportDefaultVoiceAsText, setExportDefaultVoiceAsText] = useState(false)
+  const [exportDefaultExcelCompactColumns, setExportDefaultExcelCompactColumns] = useState(true)
+  const [exportDefaultConcurrency, setExportDefaultConcurrency] = useState(2)
+
+  useEffect(() => {
+    let cancelled = false
+    void (async () => {
+      const [savedFormat, savedAvatars, savedDateRange, savedMedia, savedVoiceAsText, savedExcelCompactColumns, savedConcurrency] = await Promise.all([
+        configService.getExportDefaultFormat(),
+        configService.getExportDefaultAvatars(),
+        configService.getExportDefaultDateRange(),
+        configService.getExportDefaultMedia(),
+        configService.getExportDefaultVoiceAsText(),
+        configService.getExportDefaultExcelCompactColumns(),
+        configService.getExportDefaultConcurrency()
+      ])
+
+      if (cancelled) return
+
+      setExportDefaultFormat(savedFormat || 'excel')
+      setExportDefaultAvatars(savedAvatars ?? true)
+      setExportDefaultDateRange(resolveExportDateRangeConfig(savedDateRange))
+      setExportDefaultMedia(savedMedia ?? {
+        images: true,
+        videos: true,
+        voices: true,
+        emojis: true
+      })
+      setExportDefaultVoiceAsText(savedVoiceAsText ?? false)
+      setExportDefaultExcelCompactColumns(savedExcelCompactColumns ?? true)
+      setExportDefaultConcurrency(savedConcurrency ?? 2)
+    })()
+
+    return () => {
+      cancelled = true
+    }
+  }, [])
+
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      const target = e.target as Node
+      if (showExportExcelColumnsSelect && exportExcelColumnsDropdownRef.current && !exportExcelColumnsDropdownRef.current.contains(target)) {
+        setShowExportExcelColumnsSelect(false)
+      }
+    }
+
+    document.addEventListener('mousedown', handleClickOutside)
+    return () => document.removeEventListener('mousedown', handleClickOutside)
+  }, [showExportExcelColumnsSelect])
+
+  const exportExcelColumnsValue = exportDefaultExcelCompactColumns ? 'compact' : 'full'
+  const exportDateRangeLabel = useMemo(() => getExportDateRangeLabel(exportDefaultDateRange), [exportDefaultDateRange])
+  const exportExcelColumnsLabel = useMemo(() => getOptionLabel(exportExcelColumnOptions, exportExcelColumnsValue), [exportExcelColumnsValue])
+
+  const notify = (text: string, success = true) => {
+    onNotify?.(text, success)
+  }
+
+  return (
+    <div className={`export-defaults-settings-form ${layout === 'split' ? 'layout-split' : 'layout-stacked'}`}>
+      <div className="form-group">
+        <div className="form-copy">
+          <label>导出并发数</label>
+          <span className="form-hint">导出多个会话时的最大并发（1~6）</span>
+        </div>
+        <div className="form-control">
+          <div className="concurrency-inline-options" role="radiogroup" aria-label="导出并发数">
+            {exportConcurrencyOptions.map((option) => (
+              <button
+                key={option}
+                type="button"
+                className={`concurrency-option ${exportDefaultConcurrency === option ? 'active' : ''}`}
+                aria-pressed={exportDefaultConcurrency === option}
+                onClick={async () => {
+                  setExportDefaultConcurrency(option)
+                  await configService.setExportDefaultConcurrency(option)
+                  onDefaultsChanged?.({ concurrency: option })
+                  notify(`已将导出并发数设为 ${option}`, true)
+                }}
+              >
+                {option}
+              </button>
+            ))}
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group format-setting-group">
+        <div className="form-copy">
+          <label>聊天消息默认导出格式</label>
+          <span className="form-hint">导出页面默认选中的格式</span>
+        </div>
+        <div className="form-control">
+          <div className="format-grid">
+            {exportFormatOptions.map((option) => (
+              <button
+                key={option.value}
+                type="button"
+                className={`format-card ${exportDefaultFormat === option.value ? 'active' : ''}`}
+                onClick={async () => {
+                  setExportDefaultFormat(option.value)
+                  await configService.setExportDefaultFormat(option.value)
+                  onDefaultsChanged?.({ format: option.value })
+                  notify('已更新导出格式默认值', true)
+                }}
+              >
+                <span className="format-label">{option.label}</span>
+                <span className="format-desc">{option.desc}</span>
+              </button>
+            ))}
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>聊天消息导出带头像</label>
+          <span className="form-hint">开启后导出的聊天消息对应的文件中会带头像信息。</span>
+        </div>
+        <div className="form-control">
+          <div className="log-toggle-line">
+            <span className="log-status">{exportDefaultAvatars ? '已开启' : '已关闭'}</span>
+            <label className="switch" htmlFor="shared-export-default-avatars">
+              <input
+                id="shared-export-default-avatars"
+                className="switch-input"
+                type="checkbox"
+                checked={exportDefaultAvatars}
+                onChange={async (e) => {
+                  const enabled = e.target.checked
+                  setExportDefaultAvatars(enabled)
+                  await configService.setExportDefaultAvatars(enabled)
+                  onDefaultsChanged?.({ avatars: enabled })
+                  notify(enabled ? '已开启聊天消息导出带头像' : '已关闭聊天消息导出带头像', true)
+                }}
+              />
+              <span className="switch-slider" />
+            </label>
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>默认导出时间范围</label>
+          <span className="form-hint">控制导出页面的默认时间选择</span>
+        </div>
+        <div className="form-control">
+          <div className="settings-time-range-field">
+            <button
+              type="button"
+              className={`settings-time-range-trigger ${isExportDateRangeDialogOpen ? 'open' : ''}`}
+              onClick={() => {
+                setShowExportExcelColumnsSelect(false)
+                setIsExportDateRangeDialogOpen(true)
+              }}
+            >
+              <span className="settings-time-range-value">{exportDateRangeLabel}</span>
+              <span className="settings-time-range-arrow">&gt;</span>
+            </button>
+          </div>
+        </div>
+      </div>
+
+      <ExportDateRangeDialog
+        open={isExportDateRangeDialogOpen}
+        value={exportDefaultDateRange}
+        onClose={() => setIsExportDateRangeDialogOpen(false)}
+        onConfirm={async (nextSelection) => {
+          setExportDefaultDateRange(nextSelection)
+          await configService.setExportDefaultDateRange(serializeExportDateRangeConfig(nextSelection))
+          onDefaultsChanged?.({ dateRange: nextSelection })
+          notify('已更新默认导出时间范围', true)
+          setIsExportDateRangeDialogOpen(false)
+        }}
+      />
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>Excel 列显示</label>
+          <span className="form-hint">控制 Excel 导出的列字段</span>
+        </div>
+        <div className="form-control">
+          <div className="select-field" ref={exportExcelColumnsDropdownRef}>
+            <button
+              type="button"
+              className={`select-trigger ${showExportExcelColumnsSelect ? 'open' : ''}`}
+              onClick={() => {
+                setShowExportExcelColumnsSelect(!showExportExcelColumnsSelect)
+                setIsExportDateRangeDialogOpen(false)
+              }}
+            >
+              <span className="select-value">{exportExcelColumnsLabel}</span>
+              <ChevronDown size={16} />
+            </button>
+            {showExportExcelColumnsSelect && (
+              <div className="select-dropdown">
+                {exportExcelColumnOptions.map((option) => (
+                  <button
+                    key={option.value}
+                    type="button"
+                    className={`select-option ${exportExcelColumnsValue === option.value ? 'active' : ''}`}
+                    onClick={async () => {
+                      const compact = option.value === 'compact'
+                      setExportDefaultExcelCompactColumns(compact)
+                      await configService.setExportDefaultExcelCompactColumns(compact)
+                      onDefaultsChanged?.({ excelCompactColumns: compact })
+                      notify(compact ? '已启用精简列' : '已启用完整列', true)
+                      setShowExportExcelColumnsSelect(false)
+                    }}
+                  >
+                    <span className="option-label">{option.label}</span>
+                    <span className="option-desc">{option.desc}</span>
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group media-setting-group">
+        <div className="form-copy">
+          <label>默认导出媒体内容</label>
+          <span className="form-hint">控制图片、视频、语音、表情包的默认导出开关</span>
+        </div>
+        <div className="form-control">
+          <div className="media-default-grid">
+            <label>
+              <input
+                type="checkbox"
+                checked={exportDefaultMedia.images}
+                onChange={async (e) => {
+                  const next = { ...exportDefaultMedia, images: e.target.checked }
+                  setExportDefaultMedia(next)
+                  await configService.setExportDefaultMedia(next)
+                  onDefaultsChanged?.({ media: next })
+                  notify(`已${e.target.checked ? '开启' : '关闭'}默认导出图片`, true)
+                }}
+              />
+              图片
+            </label>
+            <label>
+              <input
+                type="checkbox"
+                checked={exportDefaultMedia.voices}
+                onChange={async (e) => {
+                  const next = { ...exportDefaultMedia, voices: e.target.checked }
+                  setExportDefaultMedia(next)
+                  await configService.setExportDefaultMedia(next)
+                  onDefaultsChanged?.({ media: next })
+                  notify(`已${e.target.checked ? '开启' : '关闭'}默认导出语音`, true)
+                }}
+              />
+              语音
+            </label>
+            <label>
+              <input
+                type="checkbox"
+                checked={exportDefaultMedia.videos}
+                onChange={async (e) => {
+                  const next = { ...exportDefaultMedia, videos: e.target.checked }
+                  setExportDefaultMedia(next)
+                  await configService.setExportDefaultMedia(next)
+                  onDefaultsChanged?.({ media: next })
+                  notify(`已${e.target.checked ? '开启' : '关闭'}默认导出视频`, true)
+                }}
+              />
+              视频
+            </label>
+            <label>
+              <input
+                type="checkbox"
+                checked={exportDefaultMedia.emojis}
+                onChange={async (e) => {
+                  const next = { ...exportDefaultMedia, emojis: e.target.checked }
+                  setExportDefaultMedia(next)
+                  await configService.setExportDefaultMedia(next)
+                  onDefaultsChanged?.({ media: next })
+                  notify(`已${e.target.checked ? '开启' : '关闭'}默认导出表情包`, true)
+                }}
+              />
+              表情包
+            </label>
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>默认语音转文字</label>
+          <span className="form-hint">导出时默认将语音转写为文字</span>
+        </div>
+        <div className="form-control">
+          <div className="log-toggle-line">
+            <span className="log-status">{exportDefaultVoiceAsText ? '已开启' : '已关闭'}</span>
+            <label className="switch" htmlFor="shared-export-default-voice-as-text">
+              <input
+                id="shared-export-default-voice-as-text"
+                className="switch-input"
+                type="checkbox"
+                checked={exportDefaultVoiceAsText}
+                onChange={async (e) => {
+                  const enabled = e.target.checked
+                  setExportDefaultVoiceAsText(enabled)
+                  await configService.setExportDefaultVoiceAsText(enabled)
+                  onDefaultsChanged?.({ voiceAsText: enabled })
+                  notify(enabled ? '已开启默认语音转文字' : '已关闭默认语音转文字', true)
+                }}
+              />
+              <span className="switch-slider" />
+            </label>
+          </div>
+        </div>
+      </div>
+
+    </div>
+  )
+}

src/components/JumpToDatePopover.tsx

@@ -6,6 +6,7 @@ interface JumpToDatePopoverProps {
   isOpen: boolean
   onClose: () => void
   onSelect: (date: Date) => void
+  onMonthChange?: (date: Date) => void
   className?: string
   style?: React.CSSProperties
   currentDate?: Date
@@ -20,6 +21,7 @@ const JumpToDatePopover: React.FC<JumpToDatePopoverProps> = ({
   isOpen,
   onClose,
   onSelect,
+  onMonthChange,
   className,
   style,
   currentDate = new Date(),
@@ -112,13 +114,17 @@ const JumpToDatePopover: React.FC<JumpToDatePopoverProps> = ({
   const weekdays = ['日', '一', '二', '三', '四', '五', '六']
   const days = generateCalendar()
   const mergedClassName = ['jump-date-popover', className || ''].join(' ').trim()
+  const updateCalendarDate = (nextDate: Date) => {
+    setCalendarDate(nextDate)
+    onMonthChange?.(nextDate)
+  }
 
   return (
     <div className={mergedClassName} style={style} role="dialog" aria-label="跳转日期">
       <div className="calendar-nav">
         <button
           className="nav-btn"
-          onClick={() => setCalendarDate(new Date(calendarDate.getFullYear(), calendarDate.getMonth() - 1, 1))}
+          onClick={() => updateCalendarDate(new Date(calendarDate.getFullYear(), calendarDate.getMonth() - 1, 1))}
           aria-label="上一月"
         >
           <ChevronLeft size={16} />
@@ -126,7 +132,7 @@ const JumpToDatePopover: React.FC<JumpToDatePopoverProps> = ({
         <span className="current-month">{calendarDate.getFullYear()}年{calendarDate.getMonth() + 1}月</span>
         <button
           className="nav-btn"
-          onClick={() => setCalendarDate(new Date(calendarDate.getFullYear(), calendarDate.getMonth() + 1, 1))}
+          onClick={() => updateCalendarDate(new Date(calendarDate.getFullYear(), calendarDate.getMonth() + 1, 1))}
           aria-label="下一月"
         >
           <ChevronRight size={16} />

src/components/Sidebar.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef } from 'react'
-import { NavLink, useLocation } from 'react-router-dom'
+import { NavLink, useLocation, useNavigate } from 'react-router-dom'
-import { Home, MessageSquare, BarChart3, Users, FileText, Settings, ChevronLeft, ChevronRight, Download, Aperture, UserCircle, Lock, ChevronUp, Trash2 } from 'lucide-react'
+import { Home, MessageSquare, BarChart3, Users, FileText, Settings, ChevronLeft, ChevronRight, Download, Aperture, UserCircle, Lock, LockOpen, ChevronUp, Trash2 } from 'lucide-react'
 import { useAppStore } from '../stores/appStore'
 import * as configService from '../services/config'
 import { onExportSessionStatus, requestExportSessionStatus } from '../services/exportBridge'
@@ -64,6 +64,7 @@ const normalizeAccountId = (value?: string | null): string => {
 
 function Sidebar() {
   const location = useLocation()
+  const navigate = useNavigate()
   const [collapsed, setCollapsed] = useState(false)
   const [authEnabled, setAuthEnabled] = useState(false)
   const [activeExportTaskCount, setActiveExportTaskCount] = useState(0)
@@ -465,16 +466,20 @@ function Sidebar() {
           </div>
         </div>
 
-        {authEnabled && (
         <button
           className="nav-item"
-            onClick={() => setLocked(true)}
+          onClick={() => {
-            title={collapsed ? '锁定' : undefined}
+            if (authEnabled) {
+              setLocked(true)
+              return
+            }
+            navigate('/settings', { state: { initialTab: 'security' } })
+          }}
+          title={collapsed ? (authEnabled ? '锁定' : '未锁定') : undefined}
         >
-            <span className="nav-icon"><Lock size={20} /></span>
+          <span className="nav-icon">{authEnabled ? <Lock size={20} /> : <LockOpen size={20} />}</span>
-            <span className="nav-label">锁定</span>
+          <span className="nav-label">{authEnabled ? '锁定' : '未锁定'}</span>
         </button>
-        )}
 
         <NavLink
           to="/settings"

src/components/Sns/ContactSnsTimelineDialog.scss

@@ -0,0 +1,329 @@
+.contact-sns-dialog-overlay {
+  position: fixed;
+  inset: 0;
+  z-index: 1200;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 24px 16px;
+  background: rgba(15, 23, 42, 0.38);
+}
+
+.contact-sns-dialog {
+  width: min(760px, 100%);
+  max-height: min(86vh, 860px);
+  border-radius: 14px;
+  border: 1px solid var(--border-color);
+  background: var(--bg-secondary-solid, #ffffff);
+  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.24);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+
+  .spin {
+    animation: contactSnsDialogSpin 1s linear infinite;
+  }
+
+  .contact-sns-dialog-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 10px;
+    padding: 14px 16px;
+    border-bottom: 1px solid var(--border-color);
+  }
+
+  .contact-sns-dialog-header-main {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    min-width: 0;
+  }
+
+  .contact-sns-dialog-avatar {
+    width: 42px;
+    height: 42px;
+    border-radius: 10px;
+    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
+    overflow: hidden;
+    flex-shrink: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    img {
+      width: 100%;
+      height: 100%;
+      object-fit: cover;
+    }
+
+    span {
+      color: #fff;
+      font-size: 14px;
+      font-weight: 600;
+    }
+  }
+
+  .contact-sns-dialog-meta {
+    min-width: 0;
+
+    h4 {
+      margin: 0;
+      font-size: 15px;
+      color: var(--text-primary);
+      overflow: hidden;
+      text-overflow: ellipsis;
+      white-space: nowrap;
+    }
+  }
+
+  .contact-sns-dialog-username {
+    margin-top: 2px;
+    font-size: 12px;
+    color: var(--text-tertiary);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .contact-sns-dialog-stats {
+    margin-top: 4px;
+    font-size: 12px;
+    color: var(--text-secondary);
+  }
+
+  .contact-sns-dialog-header-actions {
+    display: flex;
+    align-items: flex-start;
+    gap: 8px;
+    flex-shrink: 0;
+  }
+
+  .contact-sns-dialog-rank-switch {
+    position: relative;
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+  }
+
+  .contact-sns-dialog-rank-btn {
+    border: 1px solid var(--border-color);
+    border-radius: 8px;
+    background: var(--bg-primary);
+    color: var(--text-secondary);
+    height: 28px;
+    padding: 0 10px;
+    font-size: 12px;
+    line-height: 1;
+    cursor: pointer;
+    white-space: nowrap;
+
+    &:hover {
+      color: var(--text-primary);
+      border-color: color-mix(in srgb, var(--primary) 42%, var(--border-color));
+    }
+
+    &.active {
+      color: var(--primary);
+      border-color: color-mix(in srgb, var(--primary) 52%, var(--border-color));
+      background: color-mix(in srgb, var(--primary) 10%, var(--bg-primary));
+    }
+  }
+
+  .contact-sns-dialog-rank-panel {
+    position: absolute;
+    top: calc(100% + 8px);
+    right: 0;
+    width: 248px;
+    max-height: calc((28px * 15) + 16px);
+    overflow-y: auto;
+    border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--border-color));
+    border-radius: 10px;
+    background: var(--bg-primary);
+    box-shadow: 0 14px 26px rgba(0, 0, 0, 0.18);
+    padding: 8px;
+    z-index: 12;
+  }
+
+  .contact-sns-dialog-rank-empty {
+    font-size: 12px;
+    color: var(--text-tertiary);
+    line-height: 1.5;
+    text-align: center;
+    padding: 6px 0;
+  }
+
+  .contact-sns-dialog-rank-loading {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
+    min-height: 28px;
+    padding: 4px 0 8px;
+    font-size: 12px;
+    color: var(--text-secondary);
+    line-height: 1.5;
+  }
+
+  .contact-sns-dialog-rank-row {
+    display: grid;
+    grid-template-columns: 20px minmax(0, 1fr) auto;
+    align-items: center;
+    gap: 8px;
+    min-height: 28px;
+    padding: 0 4px;
+    border-radius: 7px;
+
+    &:hover {
+      background: var(--bg-hover);
+    }
+  }
+
+  .contact-sns-dialog-rank-index {
+    font-size: 12px;
+    color: var(--text-tertiary);
+    text-align: right;
+    font-variant-numeric: tabular-nums;
+  }
+
+  .contact-sns-dialog-rank-name {
+    font-size: 12px;
+    color: var(--text-primary);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .contact-sns-dialog-rank-count {
+    font-size: 12px;
+    color: var(--text-secondary);
+    font-variant-numeric: tabular-nums;
+    white-space: nowrap;
+  }
+
+  .contact-sns-dialog-close-btn {
+    border: none;
+    background: transparent;
+    color: var(--text-secondary);
+    width: 28px;
+    height: 28px;
+    border-radius: 7px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    cursor: pointer;
+
+    &:hover {
+      background: var(--bg-hover);
+      color: var(--text-primary);
+    }
+  }
+
+  .contact-sns-dialog-tip {
+    padding: 10px 16px;
+    border-bottom: 1px solid color-mix(in srgb, var(--border-color) 88%, transparent);
+    background: color-mix(in srgb, var(--bg-primary) 78%, var(--bg-secondary));
+    font-size: 12px;
+    line-height: 1.6;
+    color: var(--text-secondary);
+    word-break: break-word;
+  }
+
+  .contact-sns-dialog-body {
+    flex: 1;
+    min-height: 0;
+    overflow-y: auto;
+    padding: 12px 16px 14px;
+  }
+
+  .contact-sns-dialog-posts-list {
+    display: flex;
+    flex-direction: column;
+    gap: 14px;
+  }
+
+  .contact-sns-dialog-posts-list .post-header-actions {
+    display: none;
+  }
+
+  .contact-sns-dialog-status {
+    padding: 20px 12px;
+    text-align: center;
+    font-size: 13px;
+    color: var(--text-secondary);
+
+    &.empty {
+      color: var(--text-tertiary);
+    }
+  }
+
+  .contact-sns-dialog-load-more {
+    display: block;
+    margin: 12px auto 0;
+    border: 1px solid var(--border-color);
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    border-radius: 10px;
+    padding: 9px 18px;
+    font-size: 13px;
+    cursor: pointer;
+
+    &:hover:not(:disabled) {
+      border-color: color-mix(in srgb, var(--primary) 42%, var(--border-color));
+      color: var(--primary);
+    }
+
+    &:disabled {
+      cursor: not-allowed;
+      opacity: 0.72;
+    }
+  }
+}
+
+@media (max-width: 768px) {
+  .contact-sns-dialog-overlay {
+    padding: 12px 8px;
+  }
+
+  .contact-sns-dialog {
+    width: min(100vw - 16px, 760px);
+    max-height: calc(100vh - 24px);
+
+    .contact-sns-dialog-header {
+      padding: 12px;
+    }
+
+    .contact-sns-dialog-header-actions {
+      gap: 6px;
+    }
+
+    .contact-sns-dialog-rank-btn {
+      height: 26px;
+      padding: 0 8px;
+      font-size: 11px;
+    }
+
+    .contact-sns-dialog-rank-panel {
+      width: min(78vw, 232px);
+    }
+
+    .contact-sns-dialog-tip {
+      padding: 10px 12px;
+      line-height: 1.55;
+    }
+
+    .contact-sns-dialog-body {
+      padding: 10px 10px 12px;
+    }
+  }
+}
+
+@keyframes contactSnsDialogSpin {
+  from {
+    transform: rotate(0deg);
+  }
+
+  to {
+    transform: rotate(360deg);
+  }
+}

src/components/Sns/ContactSnsTimelineDialog.tsx

@@ -0,0 +1,593 @@
+import { createPortal } from 'react-dom'
+import { Loader2, X } from 'lucide-react'
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import { SnsPostItem } from './SnsPostItem'
+import type { SnsPost } from '../../types/sns'
+import {
+  type ContactSnsRankItem,
+  type ContactSnsRankMode,
+  type ContactSnsTimelineTarget,
+  getAvatarLetter
+} from './contactSnsTimeline'
+import './ContactSnsTimelineDialog.scss'
+
+const TIMELINE_PAGE_SIZE = 20
+const SNS_RANK_PAGE_SIZE = 50
+const SNS_RANK_DISPLAY_LIMIT = 15
+
+interface ContactSnsRankCacheEntry {
+  likes: ContactSnsRankItem[]
+  comments: ContactSnsRankItem[]
+  totalPosts: number
+}
+
+interface ContactSnsTimelineDialogProps {
+  target: ContactSnsTimelineTarget | null
+  onClose: () => void
+  initialTotalPosts?: number | null
+  initialTotalPostsLoading?: boolean
+  isProtected?: boolean
+  onDeletePost?: (postId: string, username: string) => void
+}
+
+const normalizeTotalPosts = (value?: number | null): number | null => {
+  if (!Number.isFinite(value)) return null
+  return Math.max(0, Math.floor(Number(value)))
+}
+
+const formatYmdDateFromSeconds = (timestamp?: number): string => {
+  if (!timestamp || !Number.isFinite(timestamp)) return '—'
+  const date = new Date(timestamp * 1000)
+  const year = date.getFullYear()
+  const month = `${date.getMonth() + 1}`.padStart(2, '0')
+  const day = `${date.getDate()}`.padStart(2, '0')
+  return `${year}-${month}-${day}`
+}
+
+const buildContactSnsRankings = (posts: SnsPost[]): { likes: ContactSnsRankItem[]; comments: ContactSnsRankItem[] } => {
+  const likeMap = new Map<string, ContactSnsRankItem>()
+  const commentMap = new Map<string, ContactSnsRankItem>()
+
+  for (const post of posts) {
+    const createTime = Number(post?.createTime) || 0
+    const likes = Array.isArray(post?.likes) ? post.likes : []
+    const comments = Array.isArray(post?.comments) ? post.comments : []
+
+    for (const likeNameRaw of likes) {
+      const name = String(likeNameRaw || '').trim() || '未知用户'
+      const current = likeMap.get(name)
+      if (current) {
+        current.count += 1
+        if (createTime > current.latestTime) current.latestTime = createTime
+        continue
+      }
+      likeMap.set(name, { name, count: 1, latestTime: createTime })
+    }
+
+    for (const comment of comments) {
+      const name = String(comment?.nickname || '').trim() || '未知用户'
+      const current = commentMap.get(name)
+      if (current) {
+        current.count += 1
+        if (createTime > current.latestTime) current.latestTime = createTime
+        continue
+      }
+      commentMap.set(name, { name, count: 1, latestTime: createTime })
+    }
+  }
+
+  const sorter = (left: ContactSnsRankItem, right: ContactSnsRankItem): number => {
+    if (right.count !== left.count) return right.count - left.count
+    if (right.latestTime !== left.latestTime) return right.latestTime - left.latestTime
+    return left.name.localeCompare(right.name, 'zh-CN')
+  }
+
+  return {
+    likes: [...likeMap.values()].sort(sorter),
+    comments: [...commentMap.values()].sort(sorter)
+  }
+}
+
+export function ContactSnsTimelineDialog({
+  target,
+  onClose,
+  initialTotalPosts = null,
+  initialTotalPostsLoading = false,
+  isProtected = false,
+  onDeletePost
+}: ContactSnsTimelineDialogProps) {
+  const [timelinePosts, setTimelinePosts] = useState<SnsPost[]>([])
+  const [timelineLoading, setTimelineLoading] = useState(false)
+  const [timelineLoadingMore, setTimelineLoadingMore] = useState(false)
+  const [timelineHasMore, setTimelineHasMore] = useState(false)
+  const [timelineTotalPosts, setTimelineTotalPosts] = useState<number | null>(null)
+  const [timelineStatsLoading, setTimelineStatsLoading] = useState(false)
+  const [rankMode, setRankMode] = useState<ContactSnsRankMode | null>(null)
+  const [likeRankings, setLikeRankings] = useState<ContactSnsRankItem[]>([])
+  const [commentRankings, setCommentRankings] = useState<ContactSnsRankItem[]>([])
+  const [rankLoading, setRankLoading] = useState(false)
+  const [rankError, setRankError] = useState<string | null>(null)
+  const [rankLoadedPosts, setRankLoadedPosts] = useState(0)
+  const [rankTotalPosts, setRankTotalPosts] = useState<number | null>(null)
+
+  const timelinePostsRef = useRef<SnsPost[]>([])
+  const timelineLoadingRef = useRef(false)
+  const timelineRequestTokenRef = useRef(0)
+  const totalPostsRequestTokenRef = useRef(0)
+  const rankRequestTokenRef = useRef(0)
+  const rankLoadingRef = useRef(false)
+  const rankCacheRef = useRef<Record<string, ContactSnsRankCacheEntry>>({})
+
+  const targetUsername = String(target?.username || '').trim()
+  const targetDisplayName = target?.displayName || targetUsername
+  const targetAvatarUrl = target?.avatarUrl
+
+  useEffect(() => {
+    timelinePostsRef.current = timelinePosts
+  }, [timelinePosts])
+
+  const loadTimelinePosts = useCallback(async (nextTarget: ContactSnsTimelineTarget, options?: { reset?: boolean }) => {
+    const reset = Boolean(options?.reset)
+    if (timelineLoadingRef.current) return
+
+    timelineLoadingRef.current = true
+    if (reset) {
+      setTimelineLoading(true)
+      setTimelineLoadingMore(false)
+      setTimelineHasMore(false)
+    } else {
+      setTimelineLoadingMore(true)
+    }
+
+    const requestToken = ++timelineRequestTokenRef.current
+
+    try {
+      let endTime: number | undefined
+      if (!reset && timelinePostsRef.current.length > 0) {
+        endTime = timelinePostsRef.current[timelinePostsRef.current.length - 1].createTime - 1
+      }
+
+      const result = await window.electronAPI.sns.getTimeline(
+        TIMELINE_PAGE_SIZE,
+        0,
+        [nextTarget.username],
+        '',
+        undefined,
+        endTime
+      )
+      if (requestToken !== timelineRequestTokenRef.current) return
+
+      if (!result.success || !Array.isArray(result.timeline)) {
+        if (reset) {
+          setTimelinePosts([])
+          setTimelineHasMore(false)
+        }
+        return
+      }
+
+      const timeline = [...(result.timeline as SnsPost[])].sort((left, right) => right.createTime - left.createTime)
+      if (reset) {
+        setTimelinePosts(timeline)
+        setTimelineHasMore(timeline.length >= TIMELINE_PAGE_SIZE)
+        return
+      }
+
+      const existingIds = new Set(timelinePostsRef.current.map((post) => post.id))
+      const uniqueOlder = timeline.filter((post) => !existingIds.has(post.id))
+      if (uniqueOlder.length > 0) {
+        const merged = [...timelinePostsRef.current, ...uniqueOlder].sort((left, right) => right.createTime - left.createTime)
+        setTimelinePosts(merged)
+      }
+      if (timeline.length < TIMELINE_PAGE_SIZE) {
+        setTimelineHasMore(false)
+      }
+    } catch (error) {
+      console.error('加载联系人朋友圈失败:', error)
+      if (requestToken === timelineRequestTokenRef.current && reset) {
+        setTimelinePosts([])
+        setTimelineHasMore(false)
+      }
+    } finally {
+      if (requestToken === timelineRequestTokenRef.current) {
+        timelineLoadingRef.current = false
+        setTimelineLoading(false)
+        setTimelineLoadingMore(false)
+      }
+    }
+  }, [])
+
+  const loadTimelineTotalPosts = useCallback(async (nextTarget: ContactSnsTimelineTarget) => {
+    const requestToken = ++totalPostsRequestTokenRef.current
+    setTimelineStatsLoading(true)
+
+    try {
+      const result = await window.electronAPI.sns.getUserPostCounts()
+      if (requestToken !== totalPostsRequestTokenRef.current) return
+
+      if (!result.success || !result.counts) {
+        setTimelineTotalPosts(null)
+        setRankTotalPosts(null)
+        return
+      }
+
+      const rawCount = Number(result.counts[nextTarget.username] || 0)
+      const normalized = Number.isFinite(rawCount) ? Math.max(0, Math.floor(rawCount)) : 0
+      setTimelineTotalPosts(normalized)
+      setRankTotalPosts(normalized)
+    } catch (error) {
+      console.error('加载联系人朋友圈条数失败:', error)
+      if (requestToken !== totalPostsRequestTokenRef.current) return
+      setTimelineTotalPosts(null)
+      setRankTotalPosts(null)
+    } finally {
+      if (requestToken === totalPostsRequestTokenRef.current) {
+        setTimelineStatsLoading(false)
+      }
+    }
+  }, [])
+
+  const loadRankings = useCallback(async (nextTarget: ContactSnsTimelineTarget) => {
+    const normalizedUsername = String(nextTarget?.username || '').trim()
+    if (!normalizedUsername || rankLoadingRef.current) return
+
+    const normalizedKnownTotal = normalizeTotalPosts(timelineTotalPosts)
+    const cached = rankCacheRef.current[normalizedUsername]
+
+    if (cached && (normalizedKnownTotal === null || cached.totalPosts === normalizedKnownTotal)) {
+      setLikeRankings(cached.likes)
+      setCommentRankings(cached.comments)
+      setRankLoadedPosts(cached.totalPosts)
+      setRankTotalPosts(cached.totalPosts)
+      setRankError(null)
+      setRankLoading(false)
+      return
+    }
+
+    rankLoadingRef.current = true
+    const requestToken = ++rankRequestTokenRef.current
+    setRankLoading(true)
+    setRankError(null)
+    setRankLoadedPosts(0)
+    setRankTotalPosts(normalizedKnownTotal)
+
+    try {
+      const allPosts: SnsPost[] = []
+      let endTime: number | undefined
+      let hasMore = true
+
+      while (hasMore) {
+        const result = await window.electronAPI.sns.getTimeline(
+          SNS_RANK_PAGE_SIZE,
+          0,
+          [normalizedUsername],
+          '',
+          undefined,
+          endTime
+        )
+        if (requestToken !== rankRequestTokenRef.current) return
+
+        if (!result.success) {
+          throw new Error(result.error || '加载朋友圈排行失败')
+        }
+
+        const pagePosts = Array.isArray(result.timeline)
+          ? [...(result.timeline as SnsPost[])].sort((left, right) => right.createTime - left.createTime)
+          : []
+        if (pagePosts.length === 0) {
+          hasMore = false
+          break
+        }
+
+        allPosts.push(...pagePosts)
+        setRankLoadedPosts(allPosts.length)
+        if (normalizedKnownTotal === null) {
+          setRankTotalPosts(allPosts.length)
+        }
+
+        endTime = pagePosts[pagePosts.length - 1].createTime - 1
+        hasMore = pagePosts.length >= SNS_RANK_PAGE_SIZE
+      }
+
+      if (requestToken !== rankRequestTokenRef.current) return
+
+      const rankings = buildContactSnsRankings(allPosts)
+      const totalPosts = allPosts.length
+      rankCacheRef.current[normalizedUsername] = {
+        likes: rankings.likes,
+        comments: rankings.comments,
+        totalPosts
+      }
+      setLikeRankings(rankings.likes)
+      setCommentRankings(rankings.comments)
+      setRankLoadedPosts(totalPosts)
+      setRankTotalPosts(totalPosts)
+      setRankError(null)
+    } catch (error) {
+      if (requestToken !== rankRequestTokenRef.current) return
+      const message = error instanceof Error ? error.message : String(error)
+      setLikeRankings([])
+      setCommentRankings([])
+      setRankError(message || '加载朋友圈排行失败')
+    } finally {
+      if (requestToken === rankRequestTokenRef.current) {
+        rankLoadingRef.current = false
+        setRankLoading(false)
+      }
+    }
+  }, [timelineTotalPosts])
+
+  useEffect(() => {
+    if (!targetUsername) return
+
+    totalPostsRequestTokenRef.current += 1
+    rankRequestTokenRef.current += 1
+    rankLoadingRef.current = false
+    setRankMode(null)
+    setLikeRankings([])
+    setCommentRankings([])
+    setRankLoading(false)
+    setRankError(null)
+    setRankLoadedPosts(0)
+    setRankTotalPosts(null)
+    setTimelinePosts([])
+    setTimelineTotalPosts(null)
+    setTimelineStatsLoading(false)
+    setTimelineHasMore(false)
+    setTimelineLoadingMore(false)
+    setTimelineLoading(false)
+
+    void loadTimelinePosts({
+      username: targetUsername,
+      displayName: targetDisplayName,
+      avatarUrl: targetAvatarUrl
+    }, { reset: true })
+  }, [loadTimelinePosts, targetAvatarUrl, targetDisplayName, targetUsername])
+
+  useEffect(() => {
+    if (!targetUsername) return
+
+    const normalizedTotal = normalizeTotalPosts(initialTotalPosts)
+    if (normalizedTotal !== null) {
+      setTimelineTotalPosts(normalizedTotal)
+      setRankTotalPosts(normalizedTotal)
+      setTimelineStatsLoading(false)
+      return
+    }
+
+    if (initialTotalPostsLoading) {
+      setTimelineTotalPosts(null)
+      setRankTotalPosts(null)
+      setTimelineStatsLoading(true)
+      return
+    }
+
+    void loadTimelineTotalPosts({
+      username: targetUsername,
+      displayName: targetDisplayName,
+      avatarUrl: targetAvatarUrl
+    })
+  }, [
+    initialTotalPosts,
+    initialTotalPostsLoading,
+    loadTimelineTotalPosts,
+    targetAvatarUrl,
+    targetDisplayName,
+    targetUsername
+  ])
+
+  useEffect(() => {
+    if (timelineTotalPosts === null) return
+    if (timelinePosts.length >= timelineTotalPosts) {
+      setTimelineHasMore(false)
+    }
+  }, [timelinePosts.length, timelineTotalPosts])
+
+  useEffect(() => {
+    if (!rankMode || !targetUsername) return
+    void loadRankings({
+      username: targetUsername,
+      displayName: targetDisplayName,
+      avatarUrl: targetAvatarUrl
+    })
+  }, [loadRankings, rankMode, targetAvatarUrl, targetDisplayName, targetUsername])
+
+  useEffect(() => {
+    if (!targetUsername) return
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        onClose()
+      }
+    }
+    window.addEventListener('keydown', handleKeyDown)
+    return () => window.removeEventListener('keydown', handleKeyDown)
+  }, [onClose, targetUsername])
+
+  const timelineStatsText = useMemo(() => {
+    const loadedCount = timelinePosts.length
+    const loadPart = timelineStatsLoading
+      ? `已加载 ${loadedCount} / 总数统计中...`
+      : timelineTotalPosts === null
+        ? `已加载 ${loadedCount} 条`
+        : `已加载 ${loadedCount} / 共 ${timelineTotalPosts} 条`
+
+    if (timelineLoading && loadedCount === 0) return `${loadPart} ｜ 加载中...`
+    if (loadedCount === 0) return loadPart
+
+    const latest = timelinePosts[0]?.createTime
+    const earliest = timelinePosts[timelinePosts.length - 1]?.createTime
+    return `${loadPart} ｜ ${formatYmdDateFromSeconds(earliest)} ~ ${formatYmdDateFromSeconds(latest)}`
+  }, [timelineLoading, timelinePosts, timelineStatsLoading, timelineTotalPosts])
+
+  const activeRankings = useMemo(() => {
+    if (rankMode === 'likes') return likeRankings
+    if (rankMode === 'comments') return commentRankings
+    return []
+  }, [commentRankings, likeRankings, rankMode])
+
+  const loadMore = useCallback(() => {
+    if (!targetUsername || timelineLoading || timelineLoadingMore || !timelineHasMore) return
+    void loadTimelinePosts({
+      username: targetUsername,
+      displayName: targetDisplayName,
+      avatarUrl: targetAvatarUrl
+    }, { reset: false })
+  }, [
+    loadTimelinePosts,
+    targetAvatarUrl,
+    targetDisplayName,
+    targetUsername,
+    timelineHasMore,
+    timelineLoading,
+    timelineLoadingMore
+  ])
+
+  const handleBodyScroll = useCallback((event: React.UIEvent<HTMLDivElement>) => {
+    const element = event.currentTarget
+    const remaining = element.scrollHeight - element.scrollTop - element.clientHeight
+    if (remaining <= 160) {
+      loadMore()
+    }
+  }, [loadMore])
+
+  const toggleRankMode = useCallback((mode: ContactSnsRankMode) => {
+    setRankMode((previous) => (previous === mode ? null : mode))
+  }, [])
+
+  if (!target) return null
+
+  return createPortal(
+    <div className="contact-sns-dialog-overlay" onClick={onClose}>
+      <div
+        className="contact-sns-dialog"
+        role="dialog"
+        aria-modal="true"
+        aria-label="联系人朋友圈"
+        onClick={(event) => event.stopPropagation()}
+      >
+        <div className="contact-sns-dialog-header">
+          <div className="contact-sns-dialog-header-main">
+            <div className="contact-sns-dialog-avatar">
+              {targetAvatarUrl ? (
+                <img src={targetAvatarUrl} alt="" />
+              ) : (
+                <span>{getAvatarLetter(targetDisplayName)}</span>
+              )}
+            </div>
+            <div className="contact-sns-dialog-meta">
+              <h4>{targetDisplayName}</h4>
+              <div className="contact-sns-dialog-username">@{targetUsername}</div>
+              <div className="contact-sns-dialog-stats">{timelineStatsText}</div>
+            </div>
+          </div>
+          <div className="contact-sns-dialog-header-actions">
+            <div className="contact-sns-dialog-rank-switch">
+              <button
+                type="button"
+                className={`contact-sns-dialog-rank-btn ${rankMode === 'likes' ? 'active' : ''}`}
+                onClick={() => toggleRankMode('likes')}
+              >
+                点赞排行
+              </button>
+              <button
+                type="button"
+                className={`contact-sns-dialog-rank-btn ${rankMode === 'comments' ? 'active' : ''}`}
+                onClick={() => toggleRankMode('comments')}
+              >
+                评论排行
+              </button>
+              {rankMode && (
+                <div
+                  className="contact-sns-dialog-rank-panel"
+                  role="region"
+                  aria-label={rankMode === 'likes' ? '点赞排行' : '评论排行'}
+                >
+                  {rankLoading && (
+                    <div className="contact-sns-dialog-rank-loading">
+                      <Loader2 size={12} className="spin" />
+                      <span>
+                        {rankTotalPosts !== null && rankTotalPosts > 0
+                          ? `统计中，已加载 ${rankLoadedPosts} / ${rankTotalPosts} 条`
+                          : `统计中，已加载 ${rankLoadedPosts} 条`}
+                      </span>
+                    </div>
+                  )}
+                  {!rankLoading && rankError ? (
+                    <div className="contact-sns-dialog-rank-empty">{rankError}</div>
+                  ) : !rankLoading && activeRankings.length === 0 ? (
+                    <div className="contact-sns-dialog-rank-empty">
+                      {rankMode === 'likes' ? '暂无点赞数据' : '暂无评论数据'}
+                    </div>
+                  ) : (
+                    activeRankings.slice(0, SNS_RANK_DISPLAY_LIMIT).map((item, index) => (
+                      <div className="contact-sns-dialog-rank-row" key={`${rankMode}-${item.name}`}>
+                        <span className="contact-sns-dialog-rank-index">{index + 1}</span>
+                        <span className="contact-sns-dialog-rank-name" title={item.name}>{item.name}</span>
+                        <span className="contact-sns-dialog-rank-count">
+                          {item.count.toLocaleString('zh-CN')}
+                          {rankMode === 'likes' ? '次' : '条'}
+                        </span>
+                      </div>
+                    ))
+                  )}
+                </div>
+              )}
+            </div>
+            <button className="contact-sns-dialog-close-btn" type="button" onClick={onClose}>
+              <X size={16} />
+            </button>
+          </div>
+        </div>
+
+        <div className="contact-sns-dialog-tip">
+          在微信桌面客户端中打开这个人的朋友圈浏览，可快速把其朋友圈同步到这里。若你在乎这个人，一定要试试～
+        </div>
+
+        <div
+          className="contact-sns-dialog-body"
+          onScroll={handleBodyScroll}
+        >
+          {timelinePosts.length > 0 && (
+            <div className="contact-sns-dialog-posts-list">
+              {timelinePosts.map((post) => (
+                <SnsPostItem
+                  key={post.id}
+                  post={{ ...post, isProtected }}
+                  onPreview={(src, isVideo, liveVideoPath) => {
+                    if (isVideo) {
+                      void window.electronAPI.window.openVideoPlayerWindow(src)
+                    } else {
+                      void window.electronAPI.window.openImageViewerWindow(src, liveVideoPath || undefined)
+                    }
+                  }}
+                  onDebug={() => {}}
+                  onDelete={onDeletePost}
+                  hideAuthorMeta
+                />
+              ))}
+            </div>
+          )}
+
+          {timelineLoading && (
+            <div className="contact-sns-dialog-status">正在加载该联系人的朋友圈...</div>
+          )}
+
+          {!timelineLoading && timelinePosts.length === 0 && (
+            <div className="contact-sns-dialog-status empty">该联系人暂无朋友圈</div>
+          )}
+
+          {!timelineLoading && timelineHasMore && (
+            <button
+              className="contact-sns-dialog-load-more"
+              type="button"
+              onClick={loadMore}
+              disabled={timelineLoadingMore}
+            >
+              {timelineLoadingMore ? '正在加载...' : '加载更多'}
+            </button>
+          )}
+        </div>
+      </div>
+    </div>,
+    document.body
+  )
+}

src/components/Sns/SnsFilterPanel.tsx

@@ -1,60 +1,52 @@
-import React, { useState } from 'react'
+import React from 'react'
-import { Search, Calendar, User, X, Filter, Check } from 'lucide-react'
+import { Search, User, X, Loader2 } from 'lucide-react'
 import { Avatar } from '../Avatar'
-// import JumpToDateDialog from '../JumpToDateDialog' // Assuming this is imported from parent or moved
 
 interface Contact {
     username: string
     displayName: string
     avatarUrl?: string
+    postCount?: number
+    postCountStatus?: 'idle' | 'loading' | 'ready'
+}
+
+interface ContactsCountProgress {
+    resolved: number
+    total: number
+    running: boolean
 }
 
 interface SnsFilterPanelProps {
     searchKeyword: string
     setSearchKeyword: (val: string) => void
-    jumpTargetDate?: Date
+    totalFriendsLabel?: string
-    setJumpTargetDate: (date?: Date) => void
-    onOpenJumpDialog: () => void
-    selectedUsernames: string[]
-    setSelectedUsernames: (val: string[]) => void
     contacts: Contact[]
     contactSearch: string
     setContactSearch: (val: string) => void
     loading?: boolean
+    contactsCountProgress?: ContactsCountProgress
+    onOpenContactTimeline: (contact: Contact) => void
 }
 
 export const SnsFilterPanel: React.FC<SnsFilterPanelProps> = ({
     searchKeyword,
     setSearchKeyword,
-    jumpTargetDate,
+    totalFriendsLabel,
-    setJumpTargetDate,
-    onOpenJumpDialog,
-    selectedUsernames,
-    setSelectedUsernames,
     contacts,
     contactSearch,
     setContactSearch,
-    loading
+    loading,
+    contactsCountProgress,
+    onOpenContactTimeline
 }) => {
-
     const filteredContacts = contacts.filter(c =>
-        c.displayName.toLowerCase().includes(contactSearch.toLowerCase()) ||
+        (c.displayName || '').toLowerCase().includes(contactSearch.toLowerCase()) ||
         c.username.toLowerCase().includes(contactSearch.toLowerCase())
     )
 
-    const toggleUserSelection = (username: string) => {
-        if (selectedUsernames.includes(username)) {
-            setSelectedUsernames(selectedUsernames.filter(u => u !== username))
-        } else {
-            setJumpTargetDate(undefined) // Reset date jump when selecting user
-            setSelectedUsernames([...selectedUsernames, username])
-        }
-    }
-
     const clearFilters = () => {
         setSearchKeyword('')
-        setSelectedUsernames([])
+        setContactSearch('')
-        setJumpTargetDate(undefined)
     }
 
     const getEmptyStateText = () => {
@@ -71,7 +63,7 @@ export const SnsFilterPanel: React.FC<SnsFilterPanelProps> = ({
         <aside className="sns-filter-panel">
             <div className="filter-header">
                 <h3>筛选条件</h3>
-                {(searchKeyword || jumpTargetDate || selectedUsernames.length > 0) && (
+                {(searchKeyword || contactSearch) && (
                     <button className="reset-all-btn" onClick={clearFilters} title="重置所有筛选">
                         <RefreshCw size={14} />
                     </button>
@@ -99,43 +91,13 @@ export const SnsFilterPanel: React.FC<SnsFilterPanelProps> = ({
                         )}
                     </div>
                 </div>
-
-                {/* Date Widget */}
-                <div className="filter-widget date-widget">
-                    <div className="widget-header">
-                        <Calendar size={14} />
-                        <span>时间跳转</span>
-                    </div>
-                    <button
-                        className={`date-picker-trigger ${jumpTargetDate ? 'active' : ''}`}
-                        onClick={onOpenJumpDialog}
-                    >
-                        <span className="date-text">
-                            {jumpTargetDate
-                                ? jumpTargetDate.toLocaleDateString('zh-CN', { year: 'numeric', month: 'long', day: 'numeric' })
-                                : '选择日期...'}
-                        </span>
-                        {jumpTargetDate && (
-                            <div
-                                className="clear-date-btn"
-                                onClick={(e) => {
-                                    e.stopPropagation()
-                                    setJumpTargetDate(undefined)
-                                }}
-                            >
-                                <X size={12} />
-                            </div>
-                        )}
-                    </button>
-                </div>
-
                 {/* Contact Widget */}
                 <div className="filter-widget contact-widget">
                     <div className="widget-header">
                         <User size={14} />
                         <span>联系人</span>
-                        {selectedUsernames.length > 0 && (
+                        {totalFriendsLabel && (
-                            <span className="badge">{selectedUsernames.length}</span>
+                            <span className="widget-header-summary">{totalFriendsLabel}</span>
                         )}
                     </div>
 
@@ -152,18 +114,36 @@ export const SnsFilterPanel: React.FC<SnsFilterPanelProps> = ({
                         )}
                     </div>
 
+                    {contactsCountProgress && contactsCountProgress.total > 0 && (
+                        <div className="contact-count-progress">
+                            {contactsCountProgress.running
+                                ? `朋友圈条数统计中 ${contactsCountProgress.resolved}/${contactsCountProgress.total}`
+                                : `朋友圈条数已统计 ${contactsCountProgress.total}/${contactsCountProgress.total}`}
+                        </div>
+                    )}
+
                     <div className="contact-list-scroll">
                         {filteredContacts.map(contact => {
+                            const isPostCountReady = contact.postCountStatus === 'ready'
                             return (
                             <div
                                 key={contact.username}
-                                className={`contact-row ${selectedUsernames.includes(contact.username) ? 'selected' : ''}`}
+                                className="contact-row"
-                                onClick={() => toggleUserSelection(contact.username)}
+                                onClick={() => onOpenContactTimeline(contact)}
                             >
                                 <Avatar src={contact.avatarUrl} name={contact.displayName} size={36} shape="rounded" />
                                 <div className="contact-meta">
                                     <span className="contact-name">{contact.displayName}</span>
                                 </div>
+                                <div className="contact-post-count-wrap">
+                                    {isPostCountReady ? (
+                                        <span className="contact-post-count">{Math.max(0, Math.floor(Number(contact.postCount || 0)))}条</span>
+                                    ) : (
+                                        <span className="contact-post-count-loading" title="统计中">
+                                            <Loader2 size={13} className="spinning" />
+                                        </span>
+                                    )}
+                                </div>
                             </div>
                             )
                         })}

src/components/Sns/SnsPostItem.tsx

@@ -243,10 +243,12 @@ interface SnsPostItemProps {
     post: SnsPost
     onPreview: (src: string, isVideo?: boolean, liveVideoPath?: string) => void
     onDebug: (post: SnsPost) => void
-    onDelete?: (postId: string) => void
+    onDelete?: (postId: string, username: string) => void
+    onOpenAuthorPosts?: (post: SnsPost) => void
+    hideAuthorMeta?: boolean
 }
 
-export const SnsPostItem: React.FC<SnsPostItemProps> = ({ post, onPreview, onDebug, onDelete }) => {
+export const SnsPostItem: React.FC<SnsPostItemProps> = ({ post, onPreview, onDebug, onDelete, onOpenAuthorPosts, hideAuthorMeta = false }) => {
     const [mediaDeleted, setMediaDeleted] = useState(false)
     const [dbDeleted, setDbDeleted] = useState(false)
     const [deleting, setDeleting] = useState(false)
@@ -299,31 +301,56 @@ export const SnsPostItem: React.FC<SnsPostItemProps> = ({ post, onPreview, onDeb
             const r = await window.electronAPI.sns.deleteSnsPost(post.tid ?? post.id)
             if (r.success) {
                 setDbDeleted(true)
-                onDelete?.(post.id)
+                onDelete?.(post.id, post.username)
             }
         } finally {
             setDeleting(false)
         }
     }
 
+    const handleOpenAuthorPosts = (e: React.MouseEvent) => {
+        e.stopPropagation()
+        onOpenAuthorPosts?.(post)
+    }
+
     return (
         <>
         <div className={`sns-post-item ${(mediaDeleted || dbDeleted) ? 'post-deleted' : ''}`}>
+            {!hideAuthorMeta && (
                 <div className="post-avatar-col">
+                    <button
+                        type="button"
+                        className="author-trigger-btn avatar-trigger"
+                        onClick={handleOpenAuthorPosts}
+                        title="查看该发布者的全部朋友圈"
+                    >
                         <Avatar
                             src={post.avatarUrl}
                             name={post.nickname}
                             size={48}
                             shape="rounded"
                         />
+                    </button>
                 </div>
+            )}
 
             <div className="post-content-col">
                 <div className="post-header-row">
+                    {hideAuthorMeta ? (
+                        <span className="post-time post-time-standalone">{formatTime(post.createTime)}</span>
+                    ) : (
                         <div className="post-author-info">
+                            <button
+                                type="button"
+                                className="author-trigger-btn author-name-trigger"
+                                onClick={handleOpenAuthorPosts}
+                                title="查看该发布者的全部朋友圈"
+                            >
                                 <span className="author-name">{decodeHtmlEntities(post.nickname)}</span>
+                            </button>
                             <span className="post-time">{formatTime(post.createTime)}</span>
                         </div>
+                    )}
                     <div className="post-header-actions">
                         {(mediaDeleted || dbDeleted) && (
                             <span className="post-deleted-badge">

src/components/Sns/contactSnsTimeline.ts

@@ -0,0 +1,26 @@
+export interface ContactSnsTimelineTarget {
+  username: string
+  displayName: string
+  avatarUrl?: string
+}
+
+export interface ContactSnsRankItem {
+  name: string
+  count: number
+  latestTime: number
+}
+
+export type ContactSnsRankMode = 'likes' | 'comments'
+
+export const isSingleContactSession = (sessionId: string): boolean => {
+  const normalized = String(sessionId || '').trim()
+  if (!normalized) return false
+  if (normalized.includes('@chatroom')) return false
+  if (normalized.startsWith('gh_')) return false
+  return true
+}
+
+export const getAvatarLetter = (name: string): string => {
+  if (!name) return '?'
+  return [...name][0] || '?'
+}

src/pages/ChatPage.scss

@@ -1783,6 +1783,30 @@
   z-index: 2;
 }
 
+.standalone-phase-overlay {
+  position: absolute;
+  inset: 0;
+  z-index: 3;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  background: color-mix(in srgb, var(--bg-tertiary) 82%, transparent);
+  color: var(--text-secondary);
+  font-size: 14px;
+  pointer-events: none;
+
+  .spin {
+    animation: spin 1s linear infinite;
+  }
+
+  small {
+    color: var(--text-tertiary);
+    font-size: 12px;
+  }
+}
+
 .empty-chat-inline {
   display: flex;
   flex-direction: column;

src/pages/ChatPage.tsx

@@ -1,5 +1,5 @@
 import React, { useState, useEffect, useRef, useCallback, useMemo } from 'react'
-import { Search, MessageSquare, AlertCircle, Loader2, RefreshCw, X, ChevronDown, ChevronLeft, Info, Calendar, Database, Hash, Play, Pause, Image as ImageIcon, Link, Mic, CheckCircle, Copy, Check, CheckSquare, Download, BarChart3, Edit2, Trash2, BellOff, Users, FolderClosed, UserCheck, Crown } from 'lucide-react'
+import { Search, MessageSquare, AlertCircle, Loader2, RefreshCw, X, ChevronDown, ChevronLeft, Info, Calendar, Database, Hash, Play, Pause, Image as ImageIcon, Link, Mic, CheckCircle, Copy, Check, CheckSquare, Download, BarChart3, Edit2, Trash2, BellOff, Users, FolderClosed, UserCheck, Crown, Aperture } from 'lucide-react'
 import { useNavigate } from 'react-router-dom'
 import { createPortal } from 'react-dom'
 import { useChatStore } from '../stores/chatStore'
@@ -11,6 +11,8 @@ import { VoiceTranscribeDialog } from '../components/VoiceTranscribeDialog'
 import { LivePhotoIcon } from '../components/LivePhotoIcon'
 import { AnimatedStreamingText } from '../components/AnimatedStreamingText'
 import JumpToDatePopover from '../components/JumpToDatePopover'
+import { ContactSnsTimelineDialog } from '../components/Sns/ContactSnsTimelineDialog'
+import { type ContactSnsTimelineTarget, isSingleContactSession } from '../components/Sns/contactSnsTimeline'
 import * as configService from '../services/config'
 import {
   emitOpenSingleExport,
@@ -204,8 +206,13 @@ function formatYmdHmDateTime(timestamp?: number): string {
 interface ChatPageProps {
   standaloneSessionWindow?: boolean
   initialSessionId?: string | null
+  standaloneSource?: string | null
+  standaloneInitialDisplayName?: string | null
+  standaloneInitialAvatarUrl?: string | null
+  standaloneInitialContactType?: string | null
 }
 
+type StandaloneLoadStage = 'idle' | 'connecting' | 'loading' | 'ready'
 
 interface SessionDetail {
   wxid: string
@@ -408,8 +415,20 @@ const SessionItem = React.memo(function SessionItem({
 
 
 function ChatPage(props: ChatPageProps) {
-  const { standaloneSessionWindow = false, initialSessionId = null } = props
+  const {
+    standaloneSessionWindow = false,
+    initialSessionId = null,
+    standaloneSource = null,
+    standaloneInitialDisplayName = null,
+    standaloneInitialAvatarUrl = null,
+    standaloneInitialContactType = null
+  } = props
   const normalizedInitialSessionId = useMemo(() => String(initialSessionId || '').trim(), [initialSessionId])
+  const normalizedStandaloneSource = useMemo(() => String(standaloneSource || '').trim().toLowerCase(), [standaloneSource])
+  const normalizedStandaloneInitialDisplayName = useMemo(() => String(standaloneInitialDisplayName || '').trim(), [standaloneInitialDisplayName])
+  const normalizedStandaloneInitialAvatarUrl = useMemo(() => String(standaloneInitialAvatarUrl || '').trim(), [standaloneInitialAvatarUrl])
+  const normalizedStandaloneInitialContactType = useMemo(() => String(standaloneInitialContactType || '').trim().toLowerCase(), [standaloneInitialContactType])
+  const shouldHideStandaloneDetailButton = standaloneSessionWindow && normalizedStandaloneSource === 'export'
   const navigate = useNavigate()
 
   const {
@@ -493,11 +512,17 @@ function ChatPage(props: ChatPageProps) {
   const [hasInitialMessages, setHasInitialMessages] = useState(false)
   const [isSessionSwitching, setIsSessionSwitching] = useState(false)
   const [noMessageTable, setNoMessageTable] = useState(false)
-  const [fallbackDisplayName, setFallbackDisplayName] = useState<string | null>(null)
+  const [fallbackDisplayName, setFallbackDisplayName] = useState<string | null>(normalizedStandaloneInitialDisplayName || null)
+  const [fallbackAvatarUrl, setFallbackAvatarUrl] = useState<string | null>(normalizedStandaloneInitialAvatarUrl || null)
+  const [standaloneLoadStage, setStandaloneLoadStage] = useState<StandaloneLoadStage>(
+    standaloneSessionWindow && normalizedInitialSessionId ? 'connecting' : 'idle'
+  )
+  const [standaloneInitialLoadRequested, setStandaloneInitialLoadRequested] = useState(false)
   const [showVoiceTranscribeDialog, setShowVoiceTranscribeDialog] = useState(false)
   const [pendingVoiceTranscriptRequest, setPendingVoiceTranscriptRequest] = useState<{ sessionId: string; messageId: string } | null>(null)
   const [inProgressExportSessionIds, setInProgressExportSessionIds] = useState<Set<string>>(new Set())
   const [isPreparingExportDialog, setIsPreparingExportDialog] = useState(false)
+  const [chatSnsTimelineTarget, setChatSnsTimelineTarget] = useState<ContactSnsTimelineTarget | null>(null)
   const [exportPrepareHint, setExportPrepareHint] = useState('')
 
   // 消息右键菜单
@@ -2408,9 +2433,9 @@ function ChatPage(props: ChatPageProps) {
   }, [appendMessages, getMessageKey])
 
   // 选择会话
-  const selectSessionById = useCallback((sessionId: string) => {
+  const selectSessionById = useCallback((sessionId: string, options: { force?: boolean } = {}) => {
     const normalizedSessionId = String(sessionId || '').trim()
-    if (!normalizedSessionId || normalizedSessionId === currentSessionId) return
+    if (!normalizedSessionId || (!options.force && normalizedSessionId === currentSessionId)) return
     const switchRequestSeq = sessionSwitchRequestSeqRef.current + 1
     sessionSwitchRequestSeqRef.current = switchRequestSeq
 
@@ -2734,7 +2759,7 @@ function ChatPage(props: ChatPageProps) {
   }, [currentSessionId, messages.length, isLoadingMessages])
 
   useEffect(() => {
-    if (currentSessionId && messages.length === 0 && !isLoadingMessages && !isLoadingMore && !noMessageTable) {
+    if (currentSessionId && isConnected && messages.length === 0 && !isLoadingMessages && !isLoadingMore && !noMessageTable) {
       if (pendingSessionLoadRef.current === currentSessionId) return
       if (initialLoadRequestedSessionRef.current === currentSessionId) return
       initialLoadRequestedSessionRef.current = currentSessionId
@@ -2745,7 +2770,7 @@ function ChatPage(props: ChatPageProps) {
         forceInitialLimit: 30
       })
     }
-  }, [currentSessionId, messages.length, isLoadingMessages, isLoadingMore, noMessageTable])
+  }, [currentSessionId, isConnected, messages.length, isLoadingMessages, isLoadingMore, noMessageTable])
 
   useEffect(() => {
     return () => {
@@ -2906,7 +2931,21 @@ function ChatPage(props: ChatPageProps) {
   // 获取当前会话信息（从通讯录跳转时可能不在 sessions 列表中，构造 fallback）
   const currentSession = (() => {
     const found = Array.isArray(sessions) ? sessions.find(s => s.username === currentSessionId) : undefined
-    if (found || !currentSessionId) return found
+    if (found) {
+      if (
+        standaloneSessionWindow &&
+        normalizedInitialSessionId &&
+        found.username === normalizedInitialSessionId
+      ) {
+        return {
+          ...found,
+          displayName: found.displayName || fallbackDisplayName || found.username,
+          avatarUrl: found.avatarUrl || fallbackAvatarUrl || undefined
+        }
+      }
+      return found
+    }
+    if (!currentSessionId) return found
     return {
       username: currentSessionId,
       type: 0,
@@ -2916,6 +2955,7 @@ function ChatPage(props: ChatPageProps) {
       lastTimestamp: 0,
       lastMsgType: 0,
       displayName: fallbackDisplayName || currentSessionId,
+      avatarUrl: fallbackAvatarUrl || undefined,
     } as ChatSession
   })()
   const filteredGroupPanelMembers = useMemo(() => {
@@ -2935,33 +2975,135 @@ function ChatPage(props: ChatPageProps) {
   }, [groupMemberSearchKeyword, groupPanelMembers])
   const isCurrentSessionExporting = Boolean(currentSessionId && inProgressExportSessionIds.has(currentSessionId))
   const isExportActionBusy = isCurrentSessionExporting || isPreparingExportDialog
+  const isCurrentSessionGroup = Boolean(
+    currentSession && (
+      isGroupChatSession(currentSession.username) ||
+      (
+        standaloneSessionWindow &&
+        currentSession.username === normalizedInitialSessionId &&
+        normalizedStandaloneInitialContactType === 'group'
+      )
+    )
+  )
+  const isCurrentSessionPrivateSnsSupported = Boolean(
+    currentSession &&
+    isSingleContactSession(currentSession.username) &&
+    !isCurrentSessionGroup
+  )
+
+  const openCurrentSessionSnsTimeline = useCallback(() => {
+    if (!currentSession || !isCurrentSessionPrivateSnsSupported) return
+    setChatSnsTimelineTarget({
+      username: currentSession.username,
+      displayName: currentSession.displayName || currentSession.username,
+      avatarUrl: currentSession.avatarUrl
+    })
+  }, [currentSession, isCurrentSessionPrivateSnsSupported])
+
+  useEffect(() => {
+    if (!standaloneSessionWindow) return
+    setStandaloneInitialLoadRequested(false)
+    setStandaloneLoadStage(normalizedInitialSessionId ? 'connecting' : 'idle')
+    setFallbackDisplayName(normalizedStandaloneInitialDisplayName || null)
+    setFallbackAvatarUrl(normalizedStandaloneInitialAvatarUrl || null)
+  }, [
+    standaloneSessionWindow,
+    normalizedInitialSessionId,
+    normalizedStandaloneInitialDisplayName,
+    normalizedStandaloneInitialAvatarUrl
+  ])
+
+  useEffect(() => {
+    if (!standaloneSessionWindow) return
+    if (!normalizedInitialSessionId) return
+
+    if (normalizedStandaloneInitialDisplayName) {
+      setFallbackDisplayName(normalizedStandaloneInitialDisplayName)
+    }
+    if (normalizedStandaloneInitialAvatarUrl) {
+      setFallbackAvatarUrl(normalizedStandaloneInitialAvatarUrl)
+    }
+
+    if (!currentSessionId) {
+      setCurrentSession(normalizedInitialSessionId, { preserveMessages: false })
+    }
+    if (!isConnected || isConnecting) {
+      setStandaloneLoadStage('connecting')
+    }
+  }, [
+    standaloneSessionWindow,
+    normalizedInitialSessionId,
+    normalizedStandaloneInitialDisplayName,
+    normalizedStandaloneInitialAvatarUrl,
+    currentSessionId,
+    isConnected,
+    isConnecting,
+    setCurrentSession
+  ])
 
   useEffect(() => {
     if (!standaloneSessionWindow) return
     if (!normalizedInitialSessionId) return
     if (!isConnected || isConnecting) return
-    if (currentSessionId === normalizedInitialSessionId) return
+    if (currentSessionId === normalizedInitialSessionId && standaloneInitialLoadRequested) return
-    selectSessionById(normalizedInitialSessionId)
+    setStandaloneInitialLoadRequested(true)
+    setStandaloneLoadStage('loading')
+    selectSessionById(normalizedInitialSessionId, {
+      force: currentSessionId === normalizedInitialSessionId
+    })
   }, [
     standaloneSessionWindow,
     normalizedInitialSessionId,
     isConnected,
     isConnecting,
     currentSessionId,
+    standaloneInitialLoadRequested,
     selectSessionById
   ])
 
+  useEffect(() => {
+    if (!standaloneSessionWindow || !normalizedInitialSessionId) return
+    if (!isConnected || isConnecting) {
+      setStandaloneLoadStage('connecting')
+      return
+    }
+    if (!standaloneInitialLoadRequested) {
+      setStandaloneLoadStage('loading')
+      return
+    }
+    if (currentSessionId !== normalizedInitialSessionId) {
+      setStandaloneLoadStage('loading')
+      return
+    }
+    if (isLoadingMessages || isSessionSwitching) {
+      setStandaloneLoadStage('loading')
+      return
+    }
+    setStandaloneLoadStage('ready')
+  }, [
+    standaloneSessionWindow,
+    normalizedInitialSessionId,
+    isConnected,
+    isConnecting,
+    standaloneInitialLoadRequested,
+    currentSessionId,
+    isLoadingMessages,
+    isSessionSwitching
+  ])
+
   // 从通讯录跳转时，会话不在列表中，主动加载联系人显示名称
   useEffect(() => {
     if (!currentSessionId) return
     const found = Array.isArray(sessions) ? sessions.find(s => s.username === currentSessionId) : undefined
     if (found) {
-      setFallbackDisplayName(null)
+      if (found.displayName) setFallbackDisplayName(found.displayName)
+      if (found.avatarUrl) setFallbackAvatarUrl(found.avatarUrl)
       return
     }
     loadContactInfoBatch([currentSessionId]).then(() => {
       const cached = senderAvatarCache.get(currentSessionId)
       if (cached?.displayName) setFallbackDisplayName(cached.displayName)
+      if (cached?.avatarUrl) setFallbackAvatarUrl(cached.avatarUrl)
     })
   }, [currentSessionId, sessions])
 
@@ -3738,16 +3880,16 @@ function ChatPage(props: ChatPageProps) {
                 src={currentSession.avatarUrl}
                 name={currentSession.displayName || currentSession.username}
                 size={40}
-                className={isGroupChatSession(currentSession.username) ? 'group session-avatar' : 'session-avatar'}
+                className={isCurrentSessionGroup ? 'group session-avatar' : 'session-avatar'}
               />
               <div className="header-info">
                 <h3>{currentSession.displayName || currentSession.username}</h3>
-                {isGroupChatSession(currentSession.username) && (
+                {isCurrentSessionGroup && (
                   <div className="header-subtitle">群聊</div>
                 )}
               </div>
               <div className="header-actions">
-                {!standaloneSessionWindow && isGroupChatSession(currentSession.username) && (
+                {!standaloneSessionWindow && isCurrentSessionGroup && (
                   <button
                     className="icon-btn group-analytics-btn"
                     onClick={handleGroupAnalytics}
@@ -3756,7 +3898,7 @@ function ChatPage(props: ChatPageProps) {
                     <BarChart3 size={18} />
                   </button>
                 )}
-                {isGroupChatSession(currentSession.username) && (
+                {isCurrentSessionGroup && (
                   <button
                     className={`icon-btn group-members-btn ${showGroupMembersPanel ? 'active' : ''}`}
                     onClick={toggleGroupMembersPanel}
@@ -3779,6 +3921,16 @@ function ChatPage(props: ChatPageProps) {
                     )}
                   </button>
                 )}
+                {!standaloneSessionWindow && isCurrentSessionPrivateSnsSupported && (
+                  <button
+                    className="icon-btn chat-sns-timeline-btn"
+                    onClick={openCurrentSessionSnsTimeline}
+                    disabled={!currentSessionId}
+                    title="查看对方朋友圈"
+                  >
+                    <Aperture size={18} />
+                  </button>
+                )}
                 {!standaloneSessionWindow && (
                   <button
                     className={`icon-btn batch-transcribe-btn${isBatchTranscribing ? ' transcribing' : ''}`}
@@ -3863,6 +4015,7 @@ function ChatPage(props: ChatPageProps) {
                 >
                   <RefreshCw size={18} className={isRefreshingMessages ? 'spin' : ''} />
                 </button>
+                {!shouldHideStandaloneDetailButton && (
                   <button
                     className={`icon-btn detail-btn ${showDetailPanel ? 'active' : ''}`}
                     onClick={toggleDetailPanel}
@@ -3870,6 +4023,7 @@ function ChatPage(props: ChatPageProps) {
                   >
                     <Info size={18} />
                   </button>
+                )}
               </div>
             </div>
 
@@ -3880,7 +4034,19 @@ function ChatPage(props: ChatPageProps) {
               </div>
             )}
 
+            <ContactSnsTimelineDialog
+              target={chatSnsTimelineTarget}
+              onClose={() => setChatSnsTimelineTarget(null)}
+            />
+
             <div className={`message-content-wrapper ${hasInitialMessages ? 'loaded' : 'loading'} ${isSessionSwitching ? 'switching' : ''}`}>
+              {standaloneSessionWindow && standaloneLoadStage !== 'ready' && (
+                <div className="standalone-phase-overlay" role="status" aria-live="polite">
+                  <Loader2 size={22} className="spin" />
+                  <span>{standaloneLoadStage === 'connecting' ? '正在建立连接...' : '正在加载最近消息...'}</span>
+                  {connectionError && <small>{connectionError}</small>}
+                </div>
+              )}
               {isLoadingMessages && (!hasInitialMessages || isSessionSwitching) && (
                 <div className="loading-messages loading-overlay">
                   <Loader2 size={24} />
@@ -3937,7 +4103,7 @@ function ChatPage(props: ChatPageProps) {
                         session={currentSession}
                         showTime={!showDateDivider && showTime}
                         myAvatarUrl={myAvatarUrl}
-                        isGroupChat={isGroupChatSession(currentSession.username)}
+                        isGroupChat={isCurrentSessionGroup}
                         onRequireModelDownload={handleRequireModelDownload}
                         onContextMenu={handleContextMenu}
                         isSelectionMode={isSelectionMode}
@@ -3969,7 +4135,7 @@ function ChatPage(props: ChatPageProps) {
               </div>
 
               {/* 群成员面板 */}
-              {showGroupMembersPanel && isGroupChatSession(currentSession.username) && (
+              {showGroupMembersPanel && isCurrentSessionGroup && (
                 <div className="detail-panel group-members-panel">
                   <div className="detail-header">
                     <h4>群成员</h4>

src/pages/ContactsPage.scss

@@ -535,6 +535,28 @@
       word-break: break-all;
       user-select: text;
     }
+
+    .detail-entry-btn {
+      display: inline-flex;
+      align-items: center;
+      gap: 6px;
+      margin-left: auto;
+      border: 1px solid var(--border-color);
+      border-radius: 8px;
+      background: var(--bg-secondary);
+      color: var(--text-primary);
+      padding: 6px 10px;
+      font-size: 12px;
+      line-height: 1;
+      cursor: pointer;
+      transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
+
+      &:hover {
+        color: var(--primary);
+        border-color: color-mix(in srgb, var(--primary) 45%, var(--border-color));
+        background: color-mix(in srgb, var(--primary) 8%, var(--bg-secondary));
+      }
+    }
   }
 
   .goto-chat-btn {

src/pages/ContactsPage.tsx

@@ -1,20 +1,14 @@
 import { useState, useEffect, useCallback, useMemo, useRef, type UIEvent } from 'react'
 import { useNavigate } from 'react-router-dom'
-import { Search, RefreshCw, X, User, Users, MessageSquare, Loader2, FolderOpen, Download, ChevronDown, MessageCircle, UserX, AlertTriangle, ClipboardList } from 'lucide-react'
+import { Search, RefreshCw, X, User, Users, MessageSquare, Loader2, FolderOpen, Download, ChevronDown, MessageCircle, UserX, AlertTriangle, ClipboardList, Aperture } from 'lucide-react'
 import { useChatStore } from '../stores/chatStore'
 import { toContactTypeCardCounts, useContactTypeCountsStore } from '../stores/contactTypeCountsStore'
 import * as configService from '../services/config'
+import type { ContactInfo } from '../types/models'
+import { ContactSnsTimelineDialog } from '../components/Sns/ContactSnsTimelineDialog'
+import { type ContactSnsTimelineTarget, isSingleContactSession } from '../components/Sns/contactSnsTimeline'
 import './ContactsPage.scss'
 
-interface ContactInfo {
-    username: string
-    displayName: string
-    remark?: string
-    nickname?: string
-    avatarUrl?: string
-    type: 'friend' | 'group' | 'official' | 'former_friend' | 'other'
-}
-
 interface ContactEnrichInfo {
     displayName?: string
     avatarUrl?: string
@@ -62,6 +56,9 @@ function ContactsPage() {
     // 导出模式与查看详情
     const [exportMode, setExportMode] = useState(false)
     const [selectedContact, setSelectedContact] = useState<ContactInfo | null>(null)
+    const [snsUserPostCounts, setSnsUserPostCounts] = useState<Record<string, number>>({})
+    const [snsUserPostCountsStatus, setSnsUserPostCountsStatus] = useState<'idle' | 'loading' | 'ready' | 'error'>('idle')
+    const [snsTimelineTarget, setSnsTimelineTarget] = useState<ContactSnsTimelineTarget | null>(null)
     const navigate = useNavigate()
     const { setCurrentSession } = useChatStore()
 
@@ -509,6 +506,41 @@ function ContactsPage() {
         return () => window.clearTimeout(timer)
     }, [searchKeyword])
 
+    const loadSnsUserPostCounts = useCallback(async (options?: { force?: boolean }) => {
+        if (!options?.force && (snsUserPostCountsStatus === 'loading' || snsUserPostCountsStatus === 'ready')) {
+            return
+        }
+
+        setSnsUserPostCountsStatus('loading')
+        try {
+            const result = await window.electronAPI.sns.getUserPostCounts()
+            if (!result.success || !result.counts) {
+                setSnsUserPostCountsStatus('error')
+                return
+            }
+
+            const normalizedCounts: Record<string, number> = {}
+            for (const [rawUsername, rawCount] of Object.entries(result.counts)) {
+                const username = String(rawUsername || '').trim()
+                if (!username) continue
+                const value = Number(rawCount)
+                normalizedCounts[username] = Number.isFinite(value) ? Math.max(0, Math.floor(value)) : 0
+            }
+
+            setSnsUserPostCounts(normalizedCounts)
+            setSnsUserPostCountsStatus('ready')
+        } catch (error) {
+            console.error('加载通讯录联系人朋友圈条数失败:', error)
+            setSnsUserPostCountsStatus('error')
+        }
+    }, [snsUserPostCountsStatus])
+
+    useEffect(() => {
+        if (!selectedContact || !isSingleContactSession(selectedContact.username)) return
+        if (snsUserPostCountsStatus !== 'idle') return
+        void loadSnsUserPostCounts()
+    }, [loadSnsUserPostCounts, selectedContact, snsUserPostCountsStatus])
+
     const filteredContacts = useMemo(() => {
         let filtered = contacts.filter(contact => {
             if (contact.type === 'friend' && !contactTypes.friends) return false
@@ -579,6 +611,38 @@ function ContactsPage() {
     }, [filteredContacts, selectedUsernames])
     const allFilteredSelected = filteredContacts.length > 0 && selectedInFilteredCount === filteredContacts.length
 
+    const selectedContactSupportsSns = useMemo(() => {
+        return Boolean(selectedContact && isSingleContactSession(selectedContact.username))
+    }, [selectedContact])
+
+    const selectedContactSnsCount = useMemo(() => {
+        if (!selectedContactSupportsSns || !selectedContact) return null
+        if (snsUserPostCountsStatus !== 'ready') return null
+        const rawCount = Number(snsUserPostCounts[selectedContact.username] || 0)
+        return Number.isFinite(rawCount) ? Math.max(0, Math.floor(rawCount)) : 0
+    }, [selectedContact, selectedContactSupportsSns, snsUserPostCounts, snsUserPostCountsStatus])
+
+    const selectedContactSnsEntryLabel = useMemo(() => {
+        if (!selectedContactSupportsSns) return ''
+        if (selectedContactSnsCount !== null) {
+            return `朋友圈：${selectedContactSnsCount.toLocaleString('zh-CN')}条`
+        }
+        if (snsUserPostCountsStatus === 'error') return '朋友圈：查看'
+        return '朋友圈：统计中...'
+    }, [selectedContactSupportsSns, selectedContactSnsCount, snsUserPostCountsStatus])
+
+    const openSelectedContactSnsTimeline = useCallback(() => {
+        if (!selectedContact || !selectedContactSupportsSns) return
+        if (snsUserPostCountsStatus === 'idle') {
+            void loadSnsUserPostCounts()
+        }
+        setSnsTimelineTarget({
+            username: selectedContact.username,
+            displayName: selectedContact.displayName || selectedContact.remark || selectedContact.nickname || selectedContact.username,
+            avatarUrl: selectedContact.avatarUrl
+        })
+    }, [loadSnsUserPostCounts, selectedContact, selectedContactSupportsSns, snsUserPostCountsStatus])
+
     const { startIndex, endIndex } = useMemo(() => {
         if (filteredContacts.length === 0) {
             return { startIndex: 0, endIndex: 0 }
@@ -1069,6 +1133,19 @@ function ContactsPage() {
                             <div className="detail-row"><span className="detail-label">昵称</span><span className="detail-value">{selectedContact.nickname || selectedContact.displayName}</span></div>
                             {selectedContact.remark && <div className="detail-row"><span className="detail-label">备注</span><span className="detail-value">{selectedContact.remark}</span></div>}
                             <div className="detail-row"><span className="detail-label">类型</span><span className="detail-value">{getContactTypeName(selectedContact.type)}</span></div>
+                            {selectedContactSupportsSns && (
+                                <div className="detail-row">
+                                    <span className="detail-label">朋友圈</span>
+                                    <button
+                                        type="button"
+                                        className="detail-entry-btn"
+                                        onClick={openSelectedContactSnsTimeline}
+                                    >
+                                        <Aperture size={14} />
+                                        <span>{selectedContactSnsEntryLabel}</span>
+                                    </button>
+                                </div>
+                            )}
                         </div>
 
                         <button
@@ -1091,6 +1168,14 @@ function ContactsPage() {
                     </div>
                 </div>
             )}
+            <ContactSnsTimelineDialog
+                target={snsTimelineTarget}
+                onClose={() => setSnsTimelineTarget(null)}
+                initialTotalPosts={selectedContact && snsTimelineTarget?.username === selectedContact.username ? selectedContactSnsCount : null}
+                initialTotalPostsLoading={selectedContact && snsTimelineTarget?.username === selectedContact.username
+                    ? snsUserPostCountsStatus === 'idle' || snsUserPostCountsStatus === 'loading'
+                    : false}
+            />
         </div>
     )
 }

src/pages/SettingsPage.scss

@@ -348,6 +348,51 @@
     margin-bottom: 10px;
   }
 
+  .settings-time-range-field {
+    margin-bottom: 10px;
+  }
+
+  .settings-time-range-trigger {
+    width: 100%;
+    padding: 10px 16px;
+    border: 1px solid var(--border-color);
+    border-radius: 9999px;
+    font-size: 14px;
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 8px;
+    cursor: pointer;
+    transition: all 0.2s;
+
+    &:hover {
+      border-color: rgba(var(--primary-rgb), 0.45);
+      color: var(--primary);
+    }
+
+    &.open {
+      border-color: var(--primary);
+      box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
+    }
+  }
+
+  .settings-time-range-value {
+    flex: 1;
+    min-width: 0;
+    text-align: left;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .settings-time-range-arrow {
+    color: var(--text-tertiary);
+    font-weight: 700;
+    line-height: 1;
+  }
+
   .select-trigger {
     width: 100%;
     padding: 10px 16px;

src/pages/SettingsPage.tsx

@@ -1,4 +1,5 @@
 import { useState, useEffect, useRef } from 'react'
+import { useLocation } from 'react-router-dom'
 import { useAppStore } from '../stores/appStore'
 import { useChatStore } from '../stores/chatStore'
 import { useThemeStore, themes } from '../stores/themeStore'
@@ -8,20 +9,19 @@ import * as configService from '../services/config'
 import {
   Eye, EyeOff, FolderSearch, FolderOpen, Search, Copy,
   RotateCcw, Trash2, Plug, Check, Sun, Moon, Monitor,
-  Palette, Database, Download, HardDrive, Info, RefreshCw, ChevronDown, Mic,
+  Palette, Database, HardDrive, Info, RefreshCw, ChevronDown, Download, Mic,
   ShieldCheck, Fingerprint, Lock, KeyRound, Bell, Globe, BarChart2
 } from 'lucide-react'
 import { Avatar } from '../components/Avatar'
 import './SettingsPage.scss'
 
-type SettingsTab = 'appearance' | 'notification' | 'database' | 'models' | 'export' | 'cache' | 'api' | 'security' | 'about' | 'analytics'
+type SettingsTab = 'appearance' | 'notification' | 'database' | 'models' | 'cache' | 'api' | 'security' | 'about' | 'analytics'
 
 const tabs: { id: SettingsTab; label: string; icon: React.ElementType }[] = [
   { id: 'appearance', label: '外观', icon: Palette },
   { id: 'notification', label: '通知', icon: Bell },
   { id: 'database', label: '数据库连接', icon: Database },
   { id: 'models', label: '模型管理', icon: Mic },
-  { id: 'export', label: '导出', icon: Download },
   { id: 'cache', label: '缓存', icon: HardDrive },
   { id: 'api', label: 'API 服务', icon: Globe },
 
@@ -37,6 +37,7 @@ interface WxidOption {
 }
 
 function SettingsPage() {
+  const location = useLocation()
   const {
     isDbConnected,
     setDbConnected,
@@ -73,14 +74,6 @@ function SettingsPage() {
   const [wxid, setWxid] = useState('')
   const [wxidOptions, setWxidOptions] = useState<WxidOption[]>([])
   const [showWxidSelect, setShowWxidSelect] = useState(false)
-  const [showExportFormatSelect, setShowExportFormatSelect] = useState(false)
-  const [showExportDateRangeSelect, setShowExportDateRangeSelect] = useState(false)
-  const [showExportExcelColumnsSelect, setShowExportExcelColumnsSelect] = useState(false)
-  const [showExportConcurrencySelect, setShowExportConcurrencySelect] = useState(false)
-  const exportFormatDropdownRef = useRef<HTMLDivElement>(null)
-  const exportDateRangeDropdownRef = useRef<HTMLDivElement>(null)
-  const exportExcelColumnsDropdownRef = useRef<HTMLDivElement>(null)
-  const exportConcurrencyDropdownRef = useRef<HTMLDivElement>(null)
   const [cachePath, setCachePath] = useState('')
   const [imageKeyProgress, setImageKeyProgress] = useState(0)
   const [imageKeyPercent, setImageKeyPercent] = useState<number | null>(null)
@@ -103,12 +96,6 @@ function SettingsPage() {
 
   const [autoTranscribeVoice, setAutoTranscribeVoice] = useState(false)
   const [transcribeLanguages, setTranscribeLanguages] = useState<string[]>(['zh'])
-  const [exportDefaultFormat, setExportDefaultFormat] = useState('excel')
-  const [exportDefaultDateRange, setExportDefaultDateRange] = useState('today')
-  const [exportDefaultMedia, setExportDefaultMedia] = useState(false)
-  const [exportDefaultVoiceAsText, setExportDefaultVoiceAsText] = useState(false)
-  const [exportDefaultExcelCompactColumns, setExportDefaultExcelCompactColumns] = useState(true)
-  const [exportDefaultConcurrency, setExportDefaultConcurrency] = useState(2)
 
   const [notificationEnabled, setNotificationEnabled] = useState(true)
   const [notificationPosition, setNotificationPosition] = useState<'top-right' | 'top-left' | 'bottom-right' | 'bottom-left'>('top-right')
@@ -202,26 +189,11 @@ function SettingsPage() {
     }
   }, [])
 
-  // 点击外部关闭下拉框
   useEffect(() => {
-    const handleClickOutside = (e: MouseEvent) => {
+    const initialTab = (location.state as { initialTab?: SettingsTab } | null)?.initialTab
-      const target = e.target as Node
+    if (!initialTab) return
-      if (showExportFormatSelect && exportFormatDropdownRef.current && !exportFormatDropdownRef.current.contains(target)) {
+    setActiveTab(initialTab)
-        setShowExportFormatSelect(false)
+  }, [location.state])
-      }
-      if (showExportDateRangeSelect && exportDateRangeDropdownRef.current && !exportDateRangeDropdownRef.current.contains(target)) {
-        setShowExportDateRangeSelect(false)
-      }
-      if (showExportExcelColumnsSelect && exportExcelColumnsDropdownRef.current && !exportExcelColumnsDropdownRef.current.contains(target)) {
-        setShowExportExcelColumnsSelect(false)
-      }
-      if (showExportConcurrencySelect && exportConcurrencyDropdownRef.current && !exportConcurrencyDropdownRef.current.contains(target)) {
-        setShowExportConcurrencySelect(false)
-      }
-    }
-    document.addEventListener('mousedown', handleClickOutside)
-    return () => document.removeEventListener('mousedown', handleClickOutside)
-  }, [showExportFormatSelect, showExportDateRangeSelect, showExportExcelColumnsSelect, showExportConcurrencySelect])
 
   useEffect(() => {
     const removeDb = window.electronAPI.key.onDbKeyStatus((payload: { message: string; level: number }) => {
@@ -289,13 +261,6 @@ function SettingsPage() {
       const savedWhisperModelDir = await configService.getWhisperModelDir()
       const savedAutoTranscribe = await configService.getAutoTranscribeVoice()
       const savedTranscribeLanguages = await configService.getTranscribeLanguages()
-      const savedExportDefaultFormat = await configService.getExportDefaultFormat()
-      const savedExportDefaultDateRange = await configService.getExportDefaultDateRange()
-      const savedExportDefaultMedia = await configService.getExportDefaultMedia()
-      const savedExportDefaultVoiceAsText = await configService.getExportDefaultVoiceAsText()
-      const savedExportDefaultExcelCompactColumns = await configService.getExportDefaultExcelCompactColumns()
-      const savedExportDefaultConcurrency = await configService.getExportDefaultConcurrency()
-
       const savedNotificationEnabled = await configService.getNotificationEnabled()
       const savedNotificationPosition = await configService.getNotificationPosition()
       const savedNotificationFilterMode = await configService.getNotificationFilterMode()
@@ -330,12 +295,6 @@ function SettingsPage() {
       setLogEnabled(savedLogEnabled)
       setAutoTranscribeVoice(savedAutoTranscribe)
       setTranscribeLanguages(savedTranscribeLanguages)
-      setExportDefaultFormat(savedExportDefaultFormat || 'excel')
-      setExportDefaultDateRange(savedExportDefaultDateRange || 'today')
-      setExportDefaultMedia(savedExportDefaultMedia ?? false)
-      setExportDefaultVoiceAsText(savedExportDefaultVoiceAsText ?? false)
-      setExportDefaultExcelCompactColumns(savedExportDefaultExcelCompactColumns ?? true)
-      setExportDefaultConcurrency(savedExportDefaultConcurrency ?? 2)
 
       setNotificationEnabled(savedNotificationEnabled)
       setNotificationPosition(savedNotificationPosition)
@@ -1547,258 +1506,6 @@ function SettingsPage() {
     </div>
   )
 
-  const exportFormatOptions = [
-    { value: 'excel', label: 'Excel', desc: '电子表格，适合统计分析' },
-    { value: 'chatlab', label: 'ChatLab', desc: '标准格式，支持其他软件导入' },
-    { value: 'chatlab-jsonl', label: 'ChatLab JSONL', desc: '流式格式，适合大量消息' },
-    { value: 'json', label: 'JSON', desc: '详细格式，包含完整消息信息' },
-    { value: 'html', label: 'HTML', desc: '网页格式，可直接浏览' },
-    { value: 'txt', label: 'TXT', desc: '纯文本，通用格式' },
-    { value: 'weclone', label: 'WeClone CSV', desc: 'WeClone 兼容字段格式（CSV）' },
-    { value: 'sql', label: 'PostgreSQL', desc: '数据库脚本，便于导入到数据库' }
-  ]
-  const exportDateRangeOptions = [
-    { value: 'today', label: '今天' },
-    { value: '7d', label: '最近7天' },
-    { value: '30d', label: '最近30天' },
-    { value: '90d', label: '最近90天' },
-    { value: 'all', label: '全部时间' }
-  ]
-  const exportExcelColumnOptions = [
-    { value: 'compact', label: '精简列', desc: '序号、时间、发送者身份、消息类型、内容' },
-    { value: 'full', label: '完整列', desc: '含发送者昵称/微信ID/备注' }
-  ]
-
-  const exportConcurrencyOptions = [
-    { value: 1, label: '1' },
-    { value: 2, label: '2' },
-    { value: 3, label: '3' },
-    { value: 4, label: '4' },
-    { value: 5, label: '5' },
-    { value: 6, label: '6' }
-  ]
-
-  const getOptionLabel = (options: { value: string; label: string }[], value: string) => {
-    return options.find((option) => option.value === value)?.label ?? value
-  }
-
-  const renderExportTab = () => {
-    const exportExcelColumnsValue = exportDefaultExcelCompactColumns ? 'compact' : 'full'
-    const exportFormatLabel = getOptionLabel(exportFormatOptions, exportDefaultFormat)
-    const exportDateRangeLabel = getOptionLabel(exportDateRangeOptions, exportDefaultDateRange)
-    const exportExcelColumnsLabel = getOptionLabel(exportExcelColumnOptions, exportExcelColumnsValue)
-    const exportConcurrencyLabel = String(exportDefaultConcurrency)
-
-    return (
-      <div className="tab-content">
-        <div className="form-group">
-          <label>默认导出格式</label>
-          <span className="form-hint">导出页面默认选中的格式</span>
-          <div className="select-field" ref={exportFormatDropdownRef}>
-            <button
-              type="button"
-              className={`select-trigger ${showExportFormatSelect ? 'open' : ''}`}
-              onClick={() => {
-                setShowExportFormatSelect(!showExportFormatSelect)
-                setShowExportDateRangeSelect(false)
-                setShowExportExcelColumnsSelect(false)
-                setShowExportConcurrencySelect(false)
-              }}
-            >
-              <span className="select-value">{exportFormatLabel}</span>
-              <ChevronDown size={16} />
-            </button>
-            {showExportFormatSelect && (
-              <div className="select-dropdown">
-                {exportFormatOptions.map((option) => (
-                  <button
-                    key={option.value}
-                    type="button"
-                    className={`select-option ${exportDefaultFormat === option.value ? 'active' : ''}`}
-                    onClick={async () => {
-                      setExportDefaultFormat(option.value)
-                      await configService.setExportDefaultFormat(option.value)
-                      showMessage('已更新导出格式默认值', true)
-                      setShowExportFormatSelect(false)
-                    }}
-                  >
-                    <span className="option-label">{option.label}</span>
-                    {option.desc && <span className="option-desc">{option.desc}</span>}
-                  </button>
-                ))}
-              </div>
-            )}
-          </div>
-        </div>
-
-        <div className="form-group">
-          <label>默认导出时间范围</label>
-          <span className="form-hint">控制导出页面的默认时间选择</span>
-          <div className="select-field" ref={exportDateRangeDropdownRef}>
-            <button
-              type="button"
-              className={`select-trigger ${showExportDateRangeSelect ? 'open' : ''}`}
-              onClick={() => {
-                setShowExportDateRangeSelect(!showExportDateRangeSelect)
-                setShowExportFormatSelect(false)
-                setShowExportExcelColumnsSelect(false)
-                setShowExportConcurrencySelect(false)
-              }}
-            >
-              <span className="select-value">{exportDateRangeLabel}</span>
-              <ChevronDown size={16} />
-            </button>
-            {showExportDateRangeSelect && (
-              <div className="select-dropdown">
-                {exportDateRangeOptions.map((option) => (
-                  <button
-                    key={option.value}
-                    type="button"
-                    className={`select-option ${exportDefaultDateRange === option.value ? 'active' : ''}`}
-                    onClick={async () => {
-                      setExportDefaultDateRange(option.value)
-                      await configService.setExportDefaultDateRange(option.value)
-                      showMessage('已更新默认导出时间范围', true)
-                      setShowExportDateRangeSelect(false)
-                    }}
-                  >
-                    <span className="option-label">{option.label}</span>
-                  </button>
-                ))}
-              </div>
-            )}
-          </div>
-        </div>
-
-        <div className="form-group">
-          <label>默认导出媒体文件</label>
-          <span className="form-hint">控制图片/语音/表情的默认导出开关</span>
-          <div className="log-toggle-line">
-            <span className="log-status">{exportDefaultMedia ? '已开启' : '已关闭'}</span>
-            <label className="switch" htmlFor="export-default-media">
-              <input
-                id="export-default-media"
-                className="switch-input"
-                type="checkbox"
-                checked={exportDefaultMedia}
-                onChange={async (e) => {
-                  const enabled = e.target.checked
-                  setExportDefaultMedia(enabled)
-                  await configService.setExportDefaultMedia(enabled)
-                  showMessage(enabled ? '已开启默认媒体导出' : '已关闭默认媒体导出', true)
-                }}
-              />
-              <span className="switch-slider" />
-            </label>
-          </div>
-        </div>
-
-        <div className="form-group">
-          <label>默认语音转文字</label>
-          <span className="form-hint">导出时默认将语音转写为文字</span>
-          <div className="log-toggle-line">
-            <span className="log-status">{exportDefaultVoiceAsText ? '已开启' : '已关闭'}</span>
-            <label className="switch" htmlFor="export-default-voice-as-text">
-              <input
-                id="export-default-voice-as-text"
-                className="switch-input"
-                type="checkbox"
-                checked={exportDefaultVoiceAsText}
-                onChange={async (e) => {
-                  const enabled = e.target.checked
-                  setExportDefaultVoiceAsText(enabled)
-                  await configService.setExportDefaultVoiceAsText(enabled)
-                  showMessage(enabled ? '已开启默认语音转文字' : '已关闭默认语音转文字', true)
-                }}
-              />
-              <span className="switch-slider" />
-            </label>
-          </div>
-        </div>
-
-        <div className="form-group">
-          <label>Excel 列显示</label>
-          <span className="form-hint">控制 Excel 导出的列字段</span>
-          <div className="select-field" ref={exportExcelColumnsDropdownRef}>
-            <button
-              type="button"
-              className={`select-trigger ${showExportExcelColumnsSelect ? 'open' : ''}`}
-              onClick={() => {
-                setShowExportExcelColumnsSelect(!showExportExcelColumnsSelect)
-                setShowExportFormatSelect(false)
-                setShowExportDateRangeSelect(false)
-                setShowExportConcurrencySelect(false)
-              }}
-            >
-              <span className="select-value">{exportExcelColumnsLabel}</span>
-              <ChevronDown size={16} />
-            </button>
-            {showExportExcelColumnsSelect && (
-              <div className="select-dropdown">
-                {exportExcelColumnOptions.map((option) => (
-                  <button
-                    key={option.value}
-                    type="button"
-                    className={`select-option ${exportExcelColumnsValue === option.value ? 'active' : ''}`}
-                    onClick={async () => {
-                      const compact = option.value === 'compact'
-                      setExportDefaultExcelCompactColumns(compact)
-                      await configService.setExportDefaultExcelCompactColumns(compact)
-                      showMessage(compact ? '已启用精简列' : '已启用完整列', true)
-                      setShowExportExcelColumnsSelect(false)
-                    }}
-                  >
-                    <span className="option-label">{option.label}</span>
-                    {option.desc && <span className="option-desc">{option.desc}</span>}
-                  </button>
-                ))}
-              </div>
-            )}
-          </div>
-        </div>
-
-        <div className="form-group">
-          <label>导出并发数</label>
-          <span className="form-hint">导出多个会话时的最大并发（1~6）</span>
-          <div className="select-field" ref={exportConcurrencyDropdownRef}>
-            <button
-              type="button"
-              className={`select-trigger ${showExportConcurrencySelect ? 'open' : ''}`}
-              onClick={() => {
-                setShowExportConcurrencySelect(!showExportConcurrencySelect)
-                setShowExportFormatSelect(false)
-                setShowExportDateRangeSelect(false)
-                setShowExportExcelColumnsSelect(false)
-              }}
-            >
-              <span className="select-value">{exportConcurrencyLabel}</span>
-              <ChevronDown size={16} />
-            </button>
-            {showExportConcurrencySelect && (
-              <div className="select-dropdown">
-                {exportConcurrencyOptions.map((option) => (
-                  <button
-                    key={option.value}
-                    type="button"
-                    className={`select-option ${exportDefaultConcurrency === option.value ? 'active' : ''}`}
-                    onClick={async () => {
-                      setExportDefaultConcurrency(option.value)
-                      await configService.setExportDefaultConcurrency(option.value)
-                      showMessage(`已将导出并发数设为 ${option.value}`, true)
-                      setShowExportConcurrencySelect(false)
-                    }}
-                  >
-                    <span className="option-label">{option.label}</span>
-                  </button>
-                ))}
-              </div>
-            )}
-          </div>
-        </div>
-
-      </div>
-    )
-  }
   const renderCacheTab = () => (
     <div className="tab-content">
       <p className="section-desc">管理应用缓存数据</p>
@@ -2395,7 +2102,6 @@ function SettingsPage() {
         {activeTab === 'notification' && renderNotificationTab()}
         {activeTab === 'database' && renderDatabaseTab()}
         {activeTab === 'models' && renderModelsTab()}
-        {activeTab === 'export' && renderExportTab()}
         {activeTab === 'cache' && renderCacheTab()}
         {activeTab === 'api' && renderApiTab()}
         {activeTab === 'analytics' && renderAnalyticsTab()}

src/pages/SnsPage.scss

@@ -11,7 +11,8 @@
 
 .sns-page-layout {
     display: flex;
-    height: 100%;
+    height: calc(100% + 48px);
+    margin: -24px;
     overflow: hidden;
     background: var(--sns-bg-color);
     position: relative;
@@ -32,7 +33,7 @@
 .sns-feed-container {
     width: 100%;
     max-width: var(--sns-max-width);
-    padding: 20px 24px 60px 24px;
+    padding: 10px 24px 12px 24px;
     display: flex;
     flex-direction: column;
     gap: 0;
@@ -44,13 +45,13 @@
     display: flex;
     align-items: center;
     justify-content: space-between;
-    margin-bottom: 8px;
+    margin-bottom: 4px;
     padding: 0 4px;
     z-index: 2;
     background: var(--sns-bg-color);
     border-bottom: 1px solid var(--border-color);
-    padding-top: 10px;
+    padding-top: 4px;
-    padding-bottom: 10px;
+    padding-bottom: 6px;
 
     .feed-header-main {
         display: flex;
@@ -67,6 +68,10 @@
     }
 
     .feed-stats-line {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+        flex-wrap: wrap;
         font-size: 13px;
         color: var(--text-secondary);
         line-height: 1.4;
@@ -80,6 +85,76 @@
         }
     }
 
+    .feed-stats-range {
+        gap: 0;
+    }
+
+    .feed-overview-total {
+        font-size: inherit;
+        color: inherit;
+        white-space: nowrap;
+    }
+
+    .feed-stats-divider {
+        color: color-mix(in srgb, var(--text-secondary) 78%, transparent);
+    }
+
+    .feed-my-timeline-entry {
+        display: inline-flex;
+        align-items: center;
+        gap: 8px;
+        width: fit-content;
+        padding: 0;
+        border: none;
+        background: transparent;
+        font-size: 13px;
+        line-height: 1.4;
+        color: var(--text-secondary);
+        cursor: default;
+        transition: color 0.2s ease, opacity 0.2s ease;
+
+        .feed-my-timeline-label {
+            font-weight: 500;
+        }
+
+        .feed-my-timeline-count {
+            color: var(--text-primary);
+            font-weight: 600;
+            display: inline-flex;
+            align-items: center;
+
+            .spin {
+                animation: spin 0.8s linear infinite;
+            }
+        }
+
+        &.ready {
+            cursor: pointer;
+
+            &:hover {
+                color: var(--primary);
+            }
+
+            &:hover .feed-my-timeline-count {
+                color: var(--primary);
+            }
+
+            &:focus-visible {
+                outline: 2px solid var(--primary);
+                outline-offset: 3px;
+                border-radius: 6px;
+            }
+        }
+
+        &.loading {
+            opacity: 0.72;
+        }
+
+        &:disabled {
+            opacity: 0.68;
+        }
+    }
+
     .feed-stats-retry {
         border: none;
         background: transparent;
@@ -98,6 +173,18 @@
         gap: 10px;
     }
 
+    .jump-calendar-anchor {
+        position: relative;
+        display: flex;
+        align-items: center;
+        isolation: isolate;
+        z-index: 20;
+
+        .jump-date-popover {
+            z-index: 2600;
+        }
+    }
+
     .icon-btn {
         background: var(--bg-tertiary);
         border: 1px solid var(--border-color);
@@ -123,6 +210,50 @@
             animation: spin 0.8s linear infinite;
         }
     }
+
+    .jump-date-chip {
+        display: inline-flex;
+        align-items: center;
+        gap: 8px;
+        border: 1px solid var(--border-color);
+        border-radius: var(--sns-border-radius-sm);
+        background: var(--bg-tertiary);
+        color: var(--text-secondary);
+        padding: 8px 10px;
+        cursor: pointer;
+        transition: all 0.2s;
+
+        &:hover {
+            background: var(--hover-bg);
+            color: var(--primary);
+        }
+
+        &.active {
+            border-color: var(--primary);
+            background: rgba(var(--primary-rgb), 0.08);
+            color: var(--primary);
+        }
+    }
+
+    .jump-date-chip-label {
+        font-size: 13px;
+        font-weight: 500;
+        line-height: 1;
+        white-space: nowrap;
+    }
+
+    .jump-date-chip-clear {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        color: inherit;
+        border-radius: 999px;
+        padding: 1px;
+
+        &:hover {
+            background: color-mix(in srgb, var(--primary) 12%, transparent);
+        }
+    }
 }
 
 .sns-posts-scroll {
@@ -179,6 +310,30 @@
     flex-shrink: 0;
 }
 
+.author-trigger-btn {
+    background: transparent;
+    border: none;
+    padding: 0;
+    margin: 0;
+    color: inherit;
+    cursor: pointer;
+}
+
+.avatar-trigger {
+    border-radius: 12px;
+    transition: transform 0.15s ease, box-shadow 0.15s ease;
+
+    &:hover {
+        transform: translateY(-1px);
+        box-shadow: 0 6px 14px rgba(0, 0, 0, 0.1);
+    }
+
+    &:focus-visible {
+        outline: 2px solid var(--primary);
+        outline-offset: 2px;
+    }
+}
+
 .post-content-col {
     flex: 1;
     min-width: 0;
@@ -206,6 +361,30 @@
             margin-bottom: 2px;
         }
 
+        .author-name-trigger {
+            align-self: flex-start;
+            border-radius: 6px;
+            margin-bottom: 2px;
+
+            .author-name {
+                transition: color 0.15s ease, text-decoration-color 0.15s ease;
+                text-decoration: underline;
+                text-decoration-color: transparent;
+                text-underline-offset: 2px;
+                margin-bottom: 0;
+            }
+
+            &:hover .author-name {
+                color: var(--primary);
+                text-decoration-color: currentColor;
+            }
+
+            &:focus-visible {
+                outline: 2px solid var(--primary);
+                outline-offset: 2px;
+            }
+        }
+
         .post-time {
             font-size: 12px;
             color: var(--text-tertiary);
@@ -219,6 +398,13 @@
         flex-shrink: 0;
     }
 
+    .post-time-standalone {
+        font-size: 12px;
+        color: var(--text-tertiary);
+        line-height: 1.2;
+        padding-top: 2px;
+    }
+
     .debug-btn {
         opacity: 0;
         transition: opacity 0.2s;
@@ -909,8 +1095,20 @@
                 padding: 2px 6px;
                 border-radius: 10px;
             }
+
+            .widget-header-summary {
+                margin-left: auto;
+                font-size: 12px;
+                font-weight: 500;
+                color: var(--text-tertiary);
+                white-space: nowrap;
             }
         }
+    }
+
+    .contact-widget .widget-header .badge + .widget-header-summary {
+        margin-left: 8px;
+    }
 
     /* Search Widget */
     .input-group {
@@ -950,44 +1148,6 @@
         }
     }
 
-    /* Date Widget */
-    .date-picker-trigger {
-        width: 100%;
-        display: flex;
-        justify-content: space-between;
-        align-items: center;
-        background: var(--bg-tertiary);
-        border: 1px solid transparent;
-        border-radius: var(--sns-border-radius-sm);
-        padding: 12px;
-        cursor: pointer;
-        transition: all 0.2s;
-        font-size: 13px;
-        color: var(--text-secondary);
-
-        &:hover {
-            background: var(--bg-primary);
-            border-color: var(--primary);
-        }
-
-        &.active {
-            background: rgba(var(--primary-rgb), 0.08);
-            border-color: var(--primary);
-            color: var(--primary);
-            font-weight: 500;
-        }
-
-        .clear-date-btn {
-            padding: 4px;
-            display: flex;
-            color: var(--primary);
-
-            &:hover {
-                transform: scale(1.1);
-            }
-        }
-    }
-
     /* Contact Widget - Refactored */
     .contact-widget {
         display: flex;
@@ -1043,6 +1203,14 @@
             }
         }
 
+        .contact-count-progress {
+            padding: 8px 16px 10px;
+            font-size: 11px;
+            color: var(--text-tertiary);
+            border-bottom: 1px dashed color-mix(in srgb, var(--border-color) 70%, transparent);
+            font-variant-numeric: tabular-nums;
+        }
+
         .contact-list-scroll {
             flex: 1;
             overflow-y: auto;
@@ -1060,9 +1228,8 @@
                 border-radius: var(--sns-border-radius-md);
                 cursor: pointer;
                 transition: background 0.2s ease, transform 0.2s ease;
-                border: 2px solid transparent;
+                border: 1px solid transparent;
                 margin-bottom: 4px;
-                /* Separation for unselected items */
 
                 &:hover {
                     background: var(--hover-bg);
@@ -1070,41 +1237,6 @@
                     z-index: 10;
                 }
 
-                &.selected {
-                    background: rgba(var(--primary-rgb), 0.1);
-                    border-color: var(--primary);
-                    box-shadow: none;
-                    z-index: 5;
-                    margin-bottom: 0;
-                    /* Remove margin to merge */
-
-                    .contact-meta {
-                        .contact-name {
-                            color: var(--primary);
-                            font-weight: 600;
-                        }
-                    }
-
-                    /* If the NEXT item is also selected */
-                    &:has(+ .contact-row.selected) {
-                        border-bottom: none;
-                        border-bottom-left-radius: 0;
-                        border-bottom-right-radius: 0;
-                        padding-bottom: 12px;
-                        /* Compensate for missing border (+2px) */
-                    }
-                }
-
-                /* If the PREVIOUS item is selected */
-                &.selected+.contact-row.selected {
-                    border-top: none;
-                    border-top-left-radius: 0;
-                    border-top-right-radius: 0;
-                    margin-top: 0;
-                    padding-top: 12px;
-                    /* Compensate for missing border */
-                }
-
                 .contact-meta {
                     flex: 1;
                     min-width: 0;
@@ -1120,6 +1252,33 @@
                         text-overflow: ellipsis;
                     }
                 }
+
+                .contact-post-count-wrap {
+                    margin-left: 8px;
+                    min-width: 46px;
+                    display: flex;
+                    justify-content: flex-end;
+                    align-items: center;
+                    flex-shrink: 0;
+                }
+
+                .contact-post-count {
+                    font-size: 12px;
+                    color: var(--text-tertiary);
+                    font-variant-numeric: tabular-nums;
+                    white-space: nowrap;
+                }
+
+                .contact-post-count-loading {
+                    color: var(--text-tertiary);
+                    display: inline-flex;
+                    align-items: center;
+                    justify-content: center;
+
+                    .spinning {
+                        animation: spin 0.8s linear infinite;
+                    }
+                }
             }
         }
 
@@ -1317,6 +1476,116 @@
     }
 }
 
+.author-timeline-dialog {
+    background: var(--sns-card-bg);
+    border-radius: var(--sns-border-radius-lg);
+    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
+    width: min(860px, 94vw);
+    max-height: 86vh;
+    display: flex;
+    flex-direction: column;
+    border: 1px solid var(--border-color);
+    overflow: hidden;
+    animation: slide-up-fade 0.3s cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+.author-timeline-header {
+    padding: 14px 18px;
+    border-bottom: 1px solid var(--border-color);
+    background: var(--bg-tertiary);
+    display: flex;
+    align-items: flex-start;
+    justify-content: space-between;
+
+    .close-btn {
+        background: none;
+        border: none;
+        color: var(--text-tertiary);
+        cursor: pointer;
+        padding: 6px;
+        border-radius: 6px;
+        display: flex;
+
+        &:hover {
+            background: var(--bg-primary);
+            color: var(--text-primary);
+        }
+    }
+}
+
+.author-timeline-meta {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    min-width: 0;
+}
+
+.author-timeline-meta-text {
+    min-width: 0;
+
+    h3 {
+        margin: 0;
+        font-size: 16px;
+        color: var(--text-primary);
+    }
+}
+
+.author-timeline-username {
+    margin-top: 2px;
+    font-size: 12px;
+    color: var(--text-secondary);
+}
+
+.author-timeline-stats {
+    margin-top: 4px;
+    font-size: 12px;
+    color: var(--text-secondary);
+}
+
+.author-timeline-body {
+    padding: 16px;
+    overflow-y: auto;
+    min-height: 180px;
+    max-height: calc(86vh - 96px);
+}
+
+.author-timeline-posts-list {
+    gap: 16px;
+}
+
+.author-timeline-loading {
+    margin-top: 12px;
+}
+
+.author-timeline-empty {
+    padding: 42px 10px 30px;
+    text-align: center;
+    font-size: 14px;
+    color: var(--text-secondary);
+}
+
+.author-timeline-load-more {
+    display: block;
+    margin: 12px auto 2px;
+    border: 1px solid var(--border-color);
+    background: var(--bg-secondary);
+    color: var(--text-secondary);
+    border-radius: 999px;
+    padding: 7px 16px;
+    font-size: 13px;
+    cursor: pointer;
+
+    &:hover:not(:disabled) {
+        color: var(--primary);
+        border-color: var(--primary);
+    }
+
+    &:disabled {
+        opacity: 0.6;
+        cursor: not-allowed;
+    }
+}
+
 @keyframes slide-up-fade {
     from {
         opacity: 0;
@@ -1436,6 +1705,44 @@
     gap: 8px;
 }
 
+.export-section-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+}
+
+.time-range-trigger.sns-export-time-range-trigger {
+    border: 1px solid var(--border-color);
+    background: var(--bg-primary);
+    border-radius: 999px;
+    color: var(--text-primary);
+    font-size: 12px;
+    min-height: 32px;
+    padding: 0 10px;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    cursor: pointer;
+    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
+
+    &:hover:not(:disabled) {
+        border-color: rgba(var(--primary-rgb), 0.45);
+        color: var(--primary);
+    }
+
+    &:disabled {
+        opacity: 0.5;
+        cursor: not-allowed;
+    }
+
+    .time-range-arrow {
+        color: var(--text-tertiary);
+        font-weight: 700;
+        line-height: 1;
+    }
+}
+
 
 .export-format-options {
     display: grid;

src/services/config.ts

@@ -1,5 +1,6 @@
 // 配置服务 - 封装 Electron Store
 import { config } from './ipc'
+import type { ExportDefaultDateRangeConfig } from '../utils/exportDateRange'
 
 // 配置键名
 export const CONFIG_KEYS = {
@@ -26,6 +27,7 @@ export const CONFIG_KEYS = {
   AUTO_TRANSCRIBE_VOICE: 'autoTranscribeVoice',
   TRANSCRIBE_LANGUAGES: 'transcribeLanguages',
   EXPORT_DEFAULT_FORMAT: 'exportDefaultFormat',
+  EXPORT_DEFAULT_AVATARS: 'exportDefaultAvatars',
   EXPORT_DEFAULT_DATE_RANGE: 'exportDefaultDateRange',
   EXPORT_DEFAULT_MEDIA: 'exportDefaultMedia',
   EXPORT_DEFAULT_VOICE_AS_TEXT: 'exportDefaultVoiceAsText',
@@ -41,6 +43,7 @@ export const CONFIG_KEYS = {
   EXPORT_SESSION_MESSAGE_COUNT_CACHE_MAP: 'exportSessionMessageCountCacheMap',
   EXPORT_SESSION_CONTENT_METRIC_CACHE_MAP: 'exportSessionContentMetricCacheMap',
   EXPORT_SNS_STATS_CACHE_MAP: 'exportSnsStatsCacheMap',
+  EXPORT_SNS_USER_POST_COUNTS_CACHE_MAP: 'exportSnsUserPostCountsCacheMap',
   SNS_PAGE_CACHE_MAP: 'snsPageCacheMap',
   CONTACTS_LOAD_TIMEOUT_MS: 'contactsLoadTimeoutMs',
   CONTACTS_LIST_CACHE_MAP: 'contactsListCacheMap',
@@ -75,6 +78,20 @@ export interface WxidConfig {
   updatedAt?: number
 }
 
+export interface ExportDefaultMediaConfig {
+  images: boolean
+  videos: boolean
+  voices: boolean
+  emojis: boolean
+}
+
+const DEFAULT_EXPORT_MEDIA_CONFIG: ExportDefaultMediaConfig = {
+  images: true,
+  videos: true,
+  voices: true,
+  emojis: true
+}
+
 // 获取解密密钥
 export async function getDecryptKey(): Promise<string | null> {
   const value = await config.get(CONFIG_KEYS.DECRYPT_KEY)
@@ -333,27 +350,64 @@ export async function setExportDefaultFormat(format: string): Promise<void> {
   await config.set(CONFIG_KEYS.EXPORT_DEFAULT_FORMAT, format)
 }
 
-// 获取导出默认时间范围
+// 获取导出默认头像设置
-export async function getExportDefaultDateRange(): Promise<string | null> {
+export async function getExportDefaultAvatars(): Promise<boolean | null> {
-  const value = await config.get(CONFIG_KEYS.EXPORT_DEFAULT_DATE_RANGE)
+  const value = await config.get(CONFIG_KEYS.EXPORT_DEFAULT_AVATARS)
-  return (value as string) || null
-}
-
-// 设置导出默认时间范围
-export async function setExportDefaultDateRange(range: string): Promise<void> {
-  await config.set(CONFIG_KEYS.EXPORT_DEFAULT_DATE_RANGE, range)
-}
-
-// 获取导出默认媒体设置
-export async function getExportDefaultMedia(): Promise<boolean | null> {
-  const value = await config.get(CONFIG_KEYS.EXPORT_DEFAULT_MEDIA)
   if (typeof value === 'boolean') return value
   return null
 }
 
+// 设置导出默认头像设置
+export async function setExportDefaultAvatars(enabled: boolean): Promise<void> {
+  await config.set(CONFIG_KEYS.EXPORT_DEFAULT_AVATARS, enabled)
+}
+
+// 获取导出默认时间范围
+export async function getExportDefaultDateRange(): Promise<ExportDefaultDateRangeConfig | string | null> {
+  const value = await config.get(CONFIG_KEYS.EXPORT_DEFAULT_DATE_RANGE)
+  if (typeof value === 'string') return value
+  if (value && typeof value === 'object') {
+    return value as ExportDefaultDateRangeConfig
+  }
+  return null
+}
+
+// 设置导出默认时间范围
+export async function setExportDefaultDateRange(range: ExportDefaultDateRangeConfig | string): Promise<void> {
+  await config.set(CONFIG_KEYS.EXPORT_DEFAULT_DATE_RANGE, range)
+}
+
+// 获取导出默认媒体设置
+export async function getExportDefaultMedia(): Promise<ExportDefaultMediaConfig | null> {
+  const value = await config.get(CONFIG_KEYS.EXPORT_DEFAULT_MEDIA)
+  if (typeof value === 'boolean') {
+    return {
+      images: value,
+      videos: value,
+      voices: value,
+      emojis: value
+    }
+  }
+  if (value && typeof value === 'object') {
+    const raw = value as Partial<Record<keyof ExportDefaultMediaConfig, unknown>>
+    return {
+      images: typeof raw.images === 'boolean' ? raw.images : DEFAULT_EXPORT_MEDIA_CONFIG.images,
+      videos: typeof raw.videos === 'boolean' ? raw.videos : DEFAULT_EXPORT_MEDIA_CONFIG.videos,
+      voices: typeof raw.voices === 'boolean' ? raw.voices : DEFAULT_EXPORT_MEDIA_CONFIG.voices,
+      emojis: typeof raw.emojis === 'boolean' ? raw.emojis : DEFAULT_EXPORT_MEDIA_CONFIG.emojis
+    }
+  }
+  return null
+}
+
 // 设置导出默认媒体设置
-export async function setExportDefaultMedia(enabled: boolean): Promise<void> {
+export async function setExportDefaultMedia(media: ExportDefaultMediaConfig): Promise<void> {
-  await config.set(CONFIG_KEYS.EXPORT_DEFAULT_MEDIA, enabled)
+  await config.set(CONFIG_KEYS.EXPORT_DEFAULT_MEDIA, {
+    images: media.images,
+    videos: media.videos,
+    voices: media.voices,
+    emojis: media.emojis
+  })
 }
 
 // 获取导出默认语音转文字
@@ -534,6 +588,11 @@ export interface ExportSnsStatsCacheItem {
   totalFriends: number
 }
 
+export interface ExportSnsUserPostCountsCacheItem {
+  updatedAt: number
+  counts: Record<string, number>
+}
+
 export interface SnsPageOverviewCache {
   totalPosts: number
   totalFriends: number
@@ -741,6 +800,58 @@ export async function setExportSnsStatsCache(
   await config.set(CONFIG_KEYS.EXPORT_SNS_STATS_CACHE_MAP, map)
 }
 
+export async function getExportSnsUserPostCountsCache(scopeKey: string): Promise<ExportSnsUserPostCountsCacheItem | null> {
+  if (!scopeKey) return null
+  const value = await config.get(CONFIG_KEYS.EXPORT_SNS_USER_POST_COUNTS_CACHE_MAP)
+  if (!value || typeof value !== 'object') return null
+  const rawMap = value as Record<string, unknown>
+  const rawItem = rawMap[scopeKey]
+  if (!rawItem || typeof rawItem !== 'object') return null
+
+  const raw = rawItem as Record<string, unknown>
+  const rawCounts = raw.counts
+  if (!rawCounts || typeof rawCounts !== 'object') return null
+
+  const counts: Record<string, number> = {}
+  for (const [rawUsername, rawCount] of Object.entries(rawCounts as Record<string, unknown>)) {
+    const username = String(rawUsername || '').trim()
+    if (!username) continue
+    const valueNum = Number(rawCount)
+    counts[username] = Number.isFinite(valueNum) ? Math.max(0, Math.floor(valueNum)) : 0
+  }
+
+  const updatedAt = typeof raw.updatedAt === 'number' && Number.isFinite(raw.updatedAt)
+    ? raw.updatedAt
+    : 0
+  return { updatedAt, counts }
+}
+
+export async function setExportSnsUserPostCountsCache(
+  scopeKey: string,
+  counts: Record<string, number>
+): Promise<void> {
+  if (!scopeKey) return
+  const current = await config.get(CONFIG_KEYS.EXPORT_SNS_USER_POST_COUNTS_CACHE_MAP)
+  const map = current && typeof current === 'object'
+    ? { ...(current as Record<string, unknown>) }
+    : {}
+
+  const normalized: Record<string, number> = {}
+  for (const [rawUsername, rawCount] of Object.entries(counts || {})) {
+    const username = String(rawUsername || '').trim()
+    if (!username) continue
+    const valueNum = Number(rawCount)
+    normalized[username] = Number.isFinite(valueNum) ? Math.max(0, Math.floor(valueNum)) : 0
+  }
+
+  map[scopeKey] = {
+    updatedAt: Date.now(),
+    counts: normalized
+  }
+
+  await config.set(CONFIG_KEYS.EXPORT_SNS_USER_POST_COUNTS_CACHE_MAP, map)
+}
+
 export async function getSnsPageCache(scopeKey: string): Promise<SnsPageCacheItem | null> {
   if (!scopeKey) return null
   const value = await config.get(CONFIG_KEYS.SNS_PAGE_CACHE_MAP)

src/types/electron.d.ts

@@ -1,5 +1,12 @@
 import type { ChatSession, Message, Contact, ContactInfo } from './models'
 
+export interface SessionChatWindowOpenOptions {
+  source?: 'chat' | 'export'
+  initialDisplayName?: string
+  initialAvatarUrl?: string
+  initialContactType?: ContactInfo['type']
+}
+
 export interface ElectronAPI {
   window: {
     minimize: () => void
@@ -13,7 +20,7 @@ export interface ElectronAPI {
     resizeToFitVideo: (videoWidth: number, videoHeight: number) => Promise<void>
     openImageViewerWindow: (imagePath: string, liveVideoPath?: string) => Promise<void>
     openChatHistoryWindow: (sessionId: string, messageId: number) => Promise<boolean>
-    openSessionChatWindow: (sessionId: string) => Promise<boolean>
+    openSessionChatWindow: (sessionId: string, options?: SessionChatWindowOpenOptions) => Promise<boolean>
   }
   config: {
     get: (key: string) => Promise<unknown>
@@ -250,7 +257,13 @@ export interface ElectronAPI {
     }>
     getExportSessionStats: (
       sessionIds: string[],
-      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean; preferAccurateSpecialTypes?: boolean }
+      options?: {
+        includeRelations?: boolean
+        forceRefresh?: boolean
+        allowStaleCache?: boolean
+        preferAccurateSpecialTypes?: boolean
+        cacheOnly?: boolean
+      }
     ) => Promise<{
       success: boolean
       data?: Record<string, {
@@ -776,8 +789,10 @@ export interface ElectronAPI {
     onExportProgress: (callback: (payload: { current: number; total: number; status: string }) => void) => () => void
     selectExportDir: () => Promise<{ canceled: boolean; filePath?: string }>
     getSnsUsernames: () => Promise<{ success: boolean; usernames?: string[]; error?: string }>
+    getUserPostCounts: () => Promise<{ success: boolean; counts?: Record<string, number>; error?: string }>
     getExportStatsFast: () => Promise<{ success: boolean; data?: { totalPosts: number; totalFriends: number; myPosts: number | null }; error?: string }>
     getExportStats: () => Promise<{ success: boolean; data?: { totalPosts: number; totalFriends: number; myPosts: number | null }; error?: string }>
+    getUserPostStats: (username: string) => Promise<{ success: boolean; data?: { username: string; totalPosts: number }; error?: string }>
     installBlockDeleteTrigger: () => Promise<{ success: boolean; alreadyInstalled?: boolean; error?: string }>
     uninstallBlockDeleteTrigger: () => Promise<{ success: boolean; error?: string }>
     checkBlockDeleteTrigger: () => Promise<{ success: boolean; installed?: boolean; error?: string }>

src/utils/exportDateRange.ts

@@ -0,0 +1,341 @@
+export type ExportDateRangePreset =
+  | 'all'
+  | 'today'
+  | 'yesterday'
+  | 'last3days'
+  | 'last7days'
+  | 'last30days'
+  | 'last1year'
+  | 'last2years'
+  | 'custom'
+
+export type CalendarCell = { date: Date; inCurrentMonth: boolean }
+
+export interface ExportDateRange {
+  start: Date
+  end: Date
+}
+
+export interface ExportDateRangeSelection {
+  preset: ExportDateRangePreset
+  useAllTime: boolean
+  dateRange: ExportDateRange
+}
+
+export interface ExportDefaultDateRangeConfig {
+  version?: 1
+  preset?: ExportDateRangePreset | string
+  useAllTime?: boolean
+  start?: string | number | Date | null
+  end?: string | number | Date | null
+}
+
+export const EXPORT_DATE_RANGE_PRESETS: Array<{
+  value: Exclude<ExportDateRangePreset, 'custom'>
+  label: string
+}> = [
+  { value: 'all', label: '全部时间' },
+  { value: 'today', label: '今天' },
+  { value: 'yesterday', label: '昨天' },
+  { value: 'last3days', label: '最近3天' },
+  { value: 'last7days', label: '最近一周' },
+  { value: 'last30days', label: '最近30天' },
+  { value: 'last1year', label: '最近一年' }
+]
+
+const PRESET_LABELS: Record<Exclude<ExportDateRangePreset, 'custom'>, string> = {
+  all: '全部时间',
+  today: '今天',
+  yesterday: '昨天',
+  last3days: '最近3天',
+  last7days: '最近一周',
+  last30days: '最近30天',
+  last1year: '最近一年',
+  last2years: '最近两年'
+}
+
+const LEGACY_PRESET_MAP: Record<string, Exclude<ExportDateRangePreset, 'custom'> | 'legacy90days'> = {
+  all: 'all',
+  today: 'today',
+  yesterday: 'yesterday',
+  last3days: 'last3days',
+  last7days: 'last7days',
+  last30days: 'last30days',
+  last1year: 'last1year',
+  last2years: 'last2years',
+  '7d': 'last7days',
+  '30d': 'last30days',
+  '90d': 'legacy90days'
+}
+
+export const WEEKDAY_SHORT_LABELS = ['日', '一', '二', '三', '四', '五', '六']
+
+export const startOfDay = (date: Date): Date => {
+  const next = new Date(date)
+  next.setHours(0, 0, 0, 0)
+  return next
+}
+
+export const endOfDay = (date: Date): Date => {
+  const next = new Date(date)
+  next.setHours(23, 59, 59, 999)
+  return next
+}
+
+export const createDefaultDateRange = (): ExportDateRange => {
+  const now = new Date()
+  return {
+    start: startOfDay(now),
+    end: now
+  }
+}
+
+export const createDateRangeByPreset = (
+  preset: Exclude<ExportDateRangePreset, 'all' | 'custom'>,
+  now = new Date()
+): ExportDateRange => {
+  const end = new Date(now)
+  const baseStart = startOfDay(now)
+
+  if (preset === 'today') {
+    return { start: baseStart, end }
+  }
+
+  if (preset === 'yesterday') {
+    const yesterday = new Date(baseStart)
+    yesterday.setDate(yesterday.getDate() - 1)
+    return {
+      start: yesterday,
+      end: endOfDay(yesterday)
+    }
+  }
+
+  if (preset === 'last1year' || preset === 'last2years') {
+    const yearsBack = preset === 'last1year' ? 1 : 2
+    const start = new Date(baseStart)
+    const expectedMonth = start.getMonth()
+    start.setFullYear(start.getFullYear() - yearsBack)
+    if (start.getMonth() !== expectedMonth) {
+      start.setDate(0)
+    }
+    return { start, end }
+  }
+
+  const daysBack = preset === 'last3days' ? 2 : preset === 'last7days' ? 6 : 29
+  const start = new Date(baseStart)
+  start.setDate(start.getDate() - daysBack)
+  return { start, end }
+}
+
+export const createDateRangeByLastNDays = (days: number, now = new Date()): ExportDateRange => {
+  const end = new Date(now)
+  const start = startOfDay(now)
+  start.setDate(start.getDate() - Math.max(0, days - 1))
+  return { start, end }
+}
+
+export const formatDateInputValue = (date: Date): string => {
+  const y = date.getFullYear()
+  const m = `${date.getMonth() + 1}`.padStart(2, '0')
+  const d = `${date.getDate()}`.padStart(2, '0')
+  return `${y}-${m}-${d}`
+}
+
+export const parseDateInputValue = (raw: string): Date | null => {
+  const text = String(raw || '').trim()
+  const matched = /^(\d{4})-(\d{2})-(\d{2})$/.exec(text)
+  if (!matched) return null
+  const year = Number(matched[1])
+  const month = Number(matched[2])
+  const day = Number(matched[3])
+  if (!Number.isFinite(year) || !Number.isFinite(month) || !Number.isFinite(day)) return null
+  if (month < 1 || month > 12 || day < 1 || day > 31) return null
+  const parsed = new Date(year, month - 1, day)
+  if (
+    parsed.getFullYear() !== year ||
+    parsed.getMonth() !== month - 1 ||
+    parsed.getDate() !== day
+  ) {
+    return null
+  }
+  return parsed
+}
+
+export const toMonthStart = (date: Date): Date => new Date(date.getFullYear(), date.getMonth(), 1)
+
+export const addMonths = (date: Date, delta: number): Date => {
+  const next = new Date(date)
+  next.setMonth(next.getMonth() + delta)
+  return toMonthStart(next)
+}
+
+export const isSameDay = (left: Date, right: Date): boolean => (
+  left.getFullYear() === right.getFullYear() &&
+  left.getMonth() === right.getMonth() &&
+  left.getDate() === right.getDate()
+)
+
+export const buildCalendarCells = (monthStart: Date): CalendarCell[] => {
+  const firstDay = new Date(monthStart.getFullYear(), monthStart.getMonth(), 1)
+  const startOffset = firstDay.getDay()
+  const gridStart = new Date(firstDay)
+  gridStart.setDate(gridStart.getDate() - startOffset)
+  const cells: CalendarCell[] = []
+  for (let index = 0; index < 42; index += 1) {
+    const current = new Date(gridStart)
+    current.setDate(gridStart.getDate() + index)
+    cells.push({
+      date: current,
+      inCurrentMonth: current.getMonth() === monthStart.getMonth()
+    })
+  }
+  return cells
+}
+
+export const formatCalendarMonthTitle = (date: Date): string => `${date.getFullYear()}年${date.getMonth() + 1}月`
+
+export const cloneExportDateRange = (range: ExportDateRange): ExportDateRange => ({
+  start: new Date(range.start),
+  end: new Date(range.end)
+})
+
+export const cloneExportDateRangeSelection = (selection: ExportDateRangeSelection): ExportDateRangeSelection => ({
+  preset: selection.preset,
+  useAllTime: selection.useAllTime,
+  dateRange: cloneExportDateRange(selection.dateRange)
+})
+
+export const createExportDateRangeSelectionFromPreset = (
+  preset: Exclude<ExportDateRangePreset, 'custom'>,
+  now = new Date()
+): ExportDateRangeSelection => {
+  if (preset === 'all') {
+    return {
+      preset,
+      useAllTime: true,
+      dateRange: createDefaultDateRange()
+    }
+  }
+
+  return {
+    preset,
+    useAllTime: false,
+    dateRange: createDateRangeByPreset(preset, now)
+  }
+}
+
+export const createDefaultExportDateRangeSelection = (): ExportDateRangeSelection => (
+  createExportDateRangeSelectionFromPreset('today')
+)
+
+const parseStoredDate = (value: unknown): Date | null => {
+  if (value instanceof Date && !Number.isNaN(value.getTime())) {
+    return new Date(value)
+  }
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    const parsed = new Date(value)
+    return Number.isNaN(parsed.getTime()) ? null : parsed
+  }
+  if (typeof value === 'string') {
+    const normalized = parseDateInputValue(value)
+    if (normalized) return normalized
+    const parsed = new Date(value)
+    return Number.isNaN(parsed.getTime()) ? null : parsed
+  }
+  return null
+}
+
+const normalizePreset = (raw: unknown): Exclude<ExportDateRangePreset, 'custom'> | 'legacy90days' | null => {
+  if (typeof raw !== 'string') return null
+  const normalized = LEGACY_PRESET_MAP[raw]
+  return normalized ?? null
+}
+
+export const resolveExportDateRangeConfig = (
+  raw: ExportDefaultDateRangeConfig | string | null | undefined,
+  now = new Date()
+): ExportDateRangeSelection => {
+  if (!raw) {
+    return createDefaultExportDateRangeSelection()
+  }
+
+  if (typeof raw === 'string') {
+    const preset = normalizePreset(raw)
+    if (!preset) return createDefaultExportDateRangeSelection()
+    if (preset === 'legacy90days') {
+      return {
+        preset: 'custom',
+        useAllTime: false,
+        dateRange: createDateRangeByLastNDays(90, now)
+      }
+    }
+    return createExportDateRangeSelectionFromPreset(preset, now)
+  }
+
+  const preset = normalizePreset(raw.preset)
+  if (raw.useAllTime || preset === 'all') {
+    return createExportDateRangeSelectionFromPreset('all', now)
+  }
+  if (preset && preset !== 'legacy90days') {
+    return createExportDateRangeSelectionFromPreset(preset, now)
+  }
+
+  if (preset === 'legacy90days') {
+    return {
+      preset: 'custom',
+      useAllTime: false,
+      dateRange: createDateRangeByLastNDays(90, now)
+    }
+  }
+
+  const parsedStart = parseStoredDate(raw.start)
+  const parsedEnd = parseStoredDate(raw.end)
+  if (parsedStart && parsedEnd) {
+    const start = startOfDay(parsedStart)
+    const end = endOfDay(parsedEnd)
+    return {
+      preset: 'custom',
+      useAllTime: false,
+      dateRange: {
+        start,
+        end: end < start ? endOfDay(start) : end
+      }
+    }
+  }
+
+  return createDefaultExportDateRangeSelection()
+}
+
+export const serializeExportDateRangeConfig = (
+  selection: ExportDateRangeSelection
+): ExportDefaultDateRangeConfig => {
+  if (selection.useAllTime) {
+    return {
+      version: 1,
+      preset: 'all',
+      useAllTime: true
+    }
+  }
+
+  if (selection.preset === 'custom') {
+    return {
+      version: 1,
+      preset: 'custom',
+      useAllTime: false,
+      start: formatDateInputValue(selection.dateRange.start),
+      end: formatDateInputValue(selection.dateRange.end)
+    }
+  }
+
+  return {
+    version: 1,
+    preset: selection.preset,
+    useAllTime: false
+  }
+}
+
+export const getExportDateRangeLabel = (selection: ExportDateRangeSelection): string => {
+  if (selection.useAllTime) return PRESET_LABELS.all
+  if (selection.preset !== 'custom') return PRESET_LABELS[selection.preset]
+  return `${formatDateInputValue(selection.dateRange.start)} 至 ${formatDateInputValue(selection.dateRange.end)}`
+}