feat(export): optimize batch export flow and unify session detail typing

2026-03-25 15:25:50 +00:00 · 2026-03-02 18:14:11 +08:00
parent 750d6ad7eb
commit ac481c6b18
17 changed files with 2102 additions and 307 deletions
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -1024,8 +1024,12 @@ function registerIpcHandlers() {
    return chatService.getSessionDetailExtra(sessionId)
  })

-  ipcMain.handle('chat:getExportSessionStats', async (_, sessionIds: string[]) => {
-    return chatService.getExportSessionStats(sessionIds)
+  ipcMain.handle('chat:getExportSessionStats', async (_, sessionIds: string[], options?: {
+    includeRelations?: boolean
+    forceRefresh?: boolean
+    allowStaleCache?: boolean
+  }) => {
+    return chatService.getExportSessionStats(sessionIds, options)
  })

  ipcMain.handle('chat:getImageData', async (_, sessionId: string, msgId: string) => {
@@ -1394,6 +1398,10 @@ function registerIpcHandlers() {
    return groupAnalyticsService.getGroupMembers(chatroomId)
  })

+  ipcMain.handle('groupAnalytics:getGroupMembersPanelData', async (_, chatroomId: string, forceRefresh?: boolean) => {
+    return groupAnalyticsService.getGroupMembersPanelData(chatroomId, forceRefresh)
+  })
+
  ipcMain.handle('groupAnalytics:getGroupMessageRanking', async (_, chatroomId: string, limit?: number, startTime?: number, endTime?: number) => {
    return groupAnalyticsService.getGroupMessageRanking(chatroomId, limit, startTime, endTime)
  })
--- a/electron/preload.ts
+++ b/electron/preload.ts
@@ -157,7 +157,10 @@ contextBridge.exposeInMainWorld('electronAPI', {
    getSessionDetail: (sessionId: string) => ipcRenderer.invoke('chat:getSessionDetail', sessionId),
    getSessionDetailFast: (sessionId: string) => ipcRenderer.invoke('chat:getSessionDetailFast', sessionId),
    getSessionDetailExtra: (sessionId: string) => ipcRenderer.invoke('chat:getSessionDetailExtra', sessionId),
-    getExportSessionStats: (sessionIds: string[]) => ipcRenderer.invoke('chat:getExportSessionStats', sessionIds),
+    getExportSessionStats: (
+      sessionIds: string[],
+      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean }
+    ) => ipcRenderer.invoke('chat:getExportSessionStats', sessionIds, options),
    getImageData: (sessionId: string, msgId: string) => ipcRenderer.invoke('chat:getImageData', sessionId, msgId),
    getVoiceData: (sessionId: string, msgId: string, createTime?: number, serverId?: string | number) =>
      ipcRenderer.invoke('chat:getVoiceData', sessionId, msgId, createTime, serverId),
@@ -234,6 +237,8 @@ contextBridge.exposeInMainWorld('electronAPI', {
  groupAnalytics: {
    getGroupChats: () => ipcRenderer.invoke('groupAnalytics:getGroupChats'),
    getGroupMembers: (chatroomId: string) => ipcRenderer.invoke('groupAnalytics:getGroupMembers', chatroomId),
+    getGroupMembersPanelData: (chatroomId: string, forceRefresh?: boolean) =>
+      ipcRenderer.invoke('groupAnalytics:getGroupMembersPanelData', chatroomId, forceRefresh),
    getGroupMessageRanking: (chatroomId: string, limit?: number, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupMessageRanking', chatroomId, limit, startTime, endTime),
    getGroupActiveHours: (chatroomId: string, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupActiveHours', chatroomId, startTime, endTime),
    getGroupMediaStats: (chatroomId: string, startTime?: number, endTime?: number) => ipcRenderer.invoke('groupAnalytics:getGroupMediaStats', chatroomId, startTime, endTime),
--- a/electron/services/chatService.ts
+++ b/electron/services/chatService.ts
@@ -12,6 +12,7 @@ import { ConfigService } from './config'
 import { wcdbService } from './wcdbService'
 import { MessageCacheService } from './messageCacheService'
 import { ContactCacheService, ContactCacheEntry } from './contactCacheService'
+import { SessionStatsCacheService, SessionStatsCacheEntry, SessionStatsCacheStats } from './sessionStatsCacheService'
 import { voiceTranscribeService } from './voiceTranscribeService'
 import { LRUCache } from '../utils/LRUCache.js'

@@ -152,6 +153,19 @@ interface ExportSessionStats {
  groupMutualFriends?: number
 }

+interface ExportSessionStatsOptions {
+  includeRelations?: boolean
+  forceRefresh?: boolean
+  allowStaleCache?: boolean
+}
+
+interface ExportSessionStatsCacheMeta {
+  updatedAt: number
+  stale: boolean
+  includeRelations: boolean
+  source: 'memory' | 'disk' | 'fresh'
+}
+
 interface ExportTabCounts {
  private: number
  group: number
@@ -194,6 +208,7 @@ class ChatService {
  private hardlinkCache = new Map<string, HardlinkState>()
  private readonly contactCacheService: ContactCacheService
  private readonly messageCacheService: MessageCacheService
+  private readonly sessionStatsCacheService: SessionStatsCacheService
  private voiceWavCache: LRUCache<string, Buffer>
  private voiceTranscriptCache: LRUCache<string, string>
  private voiceTranscriptPending = new Map<string, Promise<{ success: boolean; transcript?: string; error?: string }>>()
@@ -225,6 +240,13 @@ class ChatService {
  private readonly sessionDetailExtraCacheTtlMs = 5 * 60 * 1000
  private sessionStatusCache = new Map<string, { isFolded?: boolean; isMuted?: boolean; updatedAt: number }>()
  private readonly sessionStatusCacheTtlMs = 10 * 60 * 1000
+  private sessionStatsCacheScope = ''
+  private sessionStatsMemoryCache = new Map<string, SessionStatsCacheEntry>()
+  private sessionStatsPendingBasic = new Map<string, Promise<ExportSessionStats>>()
+  private sessionStatsPendingFull = new Map<string, Promise<ExportSessionStats>>()
+  private allGroupSessionIdsCache: { ids: string[]; updatedAt: number } | null = null
+  private readonly sessionStatsCacheTtlMs = 10 * 60 * 1000
+  private readonly allGroupSessionIdsCacheTtlMs = 5 * 60 * 1000

  constructor() {
    this.configService = new ConfigService()
@@ -232,6 +254,7 @@ class ChatService {
    const persisted = this.contactCacheService.getAllEntries()
    this.avatarCache = new Map(Object.entries(persisted))
    this.messageCacheService = new MessageCacheService(this.configService.getCacheBasePath())
+    this.sessionStatsCacheService = new SessionStatsCacheService(this.configService.getCacheBasePath())
    // 初始化LRU缓存，限制大小防止内存泄漏
    this.voiceWavCache = new LRUCache(this.voiceWavCacheMaxEntries)
    this.voiceTranscriptCache = new LRUCache(1000) // 最多缓存1000条转写记录
@@ -319,6 +342,7 @@ class ChatService {
    // 使用 C++ DLL 内部的文件监控 (ReadDirectoryChangesW)
    // 这种方式更高效，且不占用 JS 线程，并能直接监听 session/message 目录变更
    wcdbService.setMonitor((type, json) => {
+      this.handleSessionStatsMonitorChange(type, json)
      // 广播给所有渲染进程窗口
      BrowserWindow.getAllWindows().forEach((win) => {
        if (!win.isDestroyed()) {
@@ -1558,13 +1582,212 @@ class ChatService {
    const dbPath = String(this.configService.get('dbPath') || '')
    const myWxid = String(this.configService.get('myWxid') || '')
    const scope = `${dbPath}::${myWxid}`
-    if (scope === this.sessionMessageCountCacheScope) return
+    if (scope === this.sessionMessageCountCacheScope) {
+      this.refreshSessionStatsCacheScope(scope)
+      return
+    }
    this.sessionMessageCountCacheScope = scope
    this.sessionMessageCountCache.clear()
    this.sessionMessageCountHintCache.clear()
    this.sessionDetailFastCache.clear()
    this.sessionDetailExtraCache.clear()
    this.sessionStatusCache.clear()
+    this.refreshSessionStatsCacheScope(scope)
+  }
+
+  private refreshSessionStatsCacheScope(scope: string): void {
+    if (scope === this.sessionStatsCacheScope) return
+    this.sessionStatsCacheScope = scope
+    this.sessionStatsMemoryCache.clear()
+    this.sessionStatsPendingBasic.clear()
+    this.sessionStatsPendingFull.clear()
+    this.allGroupSessionIdsCache = null
+  }
+
+  private buildScopedSessionStatsKey(sessionId: string): string {
+    return `${this.sessionStatsCacheScope}::${sessionId}`
+  }
+
+  private toSessionStatsCacheStats(stats: ExportSessionStats): SessionStatsCacheStats {
+    const normalized: SessionStatsCacheStats = {
+      totalMessages: Number.isFinite(stats.totalMessages) ? Math.max(0, Math.floor(stats.totalMessages)) : 0,
+      voiceMessages: Number.isFinite(stats.voiceMessages) ? Math.max(0, Math.floor(stats.voiceMessages)) : 0,
+      imageMessages: Number.isFinite(stats.imageMessages) ? Math.max(0, Math.floor(stats.imageMessages)) : 0,
+      videoMessages: Number.isFinite(stats.videoMessages) ? Math.max(0, Math.floor(stats.videoMessages)) : 0,
+      emojiMessages: Number.isFinite(stats.emojiMessages) ? Math.max(0, Math.floor(stats.emojiMessages)) : 0
+    }
+
+    if (Number.isFinite(stats.firstTimestamp)) normalized.firstTimestamp = Math.max(0, Math.floor(stats.firstTimestamp as number))
+    if (Number.isFinite(stats.lastTimestamp)) normalized.lastTimestamp = Math.max(0, Math.floor(stats.lastTimestamp as number))
+    if (Number.isFinite(stats.privateMutualGroups)) normalized.privateMutualGroups = Math.max(0, Math.floor(stats.privateMutualGroups as number))
+    if (Number.isFinite(stats.groupMemberCount)) normalized.groupMemberCount = Math.max(0, Math.floor(stats.groupMemberCount as number))
+    if (Number.isFinite(stats.groupMyMessages)) normalized.groupMyMessages = Math.max(0, Math.floor(stats.groupMyMessages as number))
+    if (Number.isFinite(stats.groupActiveSpeakers)) normalized.groupActiveSpeakers = Math.max(0, Math.floor(stats.groupActiveSpeakers as number))
+    if (Number.isFinite(stats.groupMutualFriends)) normalized.groupMutualFriends = Math.max(0, Math.floor(stats.groupMutualFriends as number))
+
+    return normalized
+  }
+
+  private fromSessionStatsCacheStats(stats: SessionStatsCacheStats): ExportSessionStats {
+    return {
+      totalMessages: stats.totalMessages,
+      voiceMessages: stats.voiceMessages,
+      imageMessages: stats.imageMessages,
+      videoMessages: stats.videoMessages,
+      emojiMessages: stats.emojiMessages,
+      firstTimestamp: stats.firstTimestamp,
+      lastTimestamp: stats.lastTimestamp,
+      privateMutualGroups: stats.privateMutualGroups,
+      groupMemberCount: stats.groupMemberCount,
+      groupMyMessages: stats.groupMyMessages,
+      groupActiveSpeakers: stats.groupActiveSpeakers,
+      groupMutualFriends: stats.groupMutualFriends
+    }
+  }
+
+  private supportsRequestedRelation(entry: SessionStatsCacheEntry, includeRelations: boolean): boolean {
+    if (!includeRelations) return true
+    return entry.includeRelations
+  }
+
+  private getSessionStatsCacheEntry(sessionId: string): { entry: SessionStatsCacheEntry; source: 'memory' | 'disk' } | null {
+    const scopedKey = this.buildScopedSessionStatsKey(sessionId)
+    const inMemory = this.sessionStatsMemoryCache.get(scopedKey)
+    if (inMemory) {
+      return { entry: inMemory, source: 'memory' }
+    }
+
+    const persisted = this.sessionStatsCacheService.get(this.sessionStatsCacheScope, sessionId)
+    if (!persisted) return null
+    this.sessionStatsMemoryCache.set(scopedKey, persisted)
+    return { entry: persisted, source: 'disk' }
+  }
+
+  private setSessionStatsCacheEntry(sessionId: string, stats: ExportSessionStats, includeRelations: boolean): number {
+    const updatedAt = Date.now()
+    const entry: SessionStatsCacheEntry = {
+      updatedAt,
+      includeRelations,
+      stats: this.toSessionStatsCacheStats(stats)
+    }
+    const scopedKey = this.buildScopedSessionStatsKey(sessionId)
+    this.sessionStatsMemoryCache.set(scopedKey, entry)
+    this.sessionStatsCacheService.set(this.sessionStatsCacheScope, sessionId, entry)
+    return updatedAt
+  }
+
+  private deleteSessionStatsCacheEntry(sessionId: string): void {
+    const scopedKey = this.buildScopedSessionStatsKey(sessionId)
+    this.sessionStatsMemoryCache.delete(scopedKey)
+    this.sessionStatsPendingBasic.delete(scopedKey)
+    this.sessionStatsPendingFull.delete(scopedKey)
+    this.sessionStatsCacheService.delete(this.sessionStatsCacheScope, sessionId)
+  }
+
+  private clearSessionStatsCacheForScope(): void {
+    this.sessionStatsMemoryCache.clear()
+    this.sessionStatsPendingBasic.clear()
+    this.sessionStatsPendingFull.clear()
+    this.allGroupSessionIdsCache = null
+    this.sessionStatsCacheService.clearScope(this.sessionStatsCacheScope)
+  }
+
+  private collectSessionIdsFromPayload(payload: unknown): Set<string> {
+    const ids = new Set<string>()
+    const walk = (value: unknown, keyHint?: string) => {
+      if (Array.isArray(value)) {
+        for (const item of value) walk(item, keyHint)
+        return
+      }
+      if (value && typeof value === 'object') {
+        for (const [k, v] of Object.entries(value as Record<string, unknown>)) {
+          walk(v, k)
+        }
+        return
+      }
+      if (typeof value !== 'string') return
+      const normalized = value.trim()
+      if (!normalized) return
+      const lowerKey = String(keyHint || '').toLowerCase()
+      const keyLooksLikeSession = (
+        lowerKey.includes('session') ||
+        lowerKey.includes('talker') ||
+        lowerKey.includes('username') ||
+        lowerKey.includes('chatroom')
+      )
+      if (!keyLooksLikeSession && !normalized.includes('@chatroom')) {
+        return
+      }
+      ids.add(normalized)
+    }
+    walk(payload)
+    return ids
+  }
+
+  private handleSessionStatsMonitorChange(type: string, json: string): void {
+    this.refreshSessionMessageCountCacheScope()
+    if (!this.sessionStatsCacheScope) return
+
+    const normalizedType = String(type || '').toLowerCase()
+    const maybeJson = String(json || '').trim()
+    let ids = new Set<string>()
+    if (maybeJson) {
+      try {
+        ids = this.collectSessionIdsFromPayload(JSON.parse(maybeJson))
+      } catch {
+        ids = this.collectSessionIdsFromPayload(maybeJson)
+      }
+    }
+
+    if (ids.size > 0) {
+      ids.forEach((sessionId) => this.deleteSessionStatsCacheEntry(sessionId))
+      if (Array.from(ids).some((id) => id.includes('@chatroom'))) {
+        this.allGroupSessionIdsCache = null
+      }
+      return
+    }
+
+    // 无法定位具体会话时，保守地仅在消息/群成员相关变更时清空当前 scope，避免展示过旧统计。
+    if (
+      normalizedType.includes('message') ||
+      normalizedType.includes('session') ||
+      normalizedType.includes('group') ||
+      normalizedType.includes('member') ||
+      normalizedType.includes('contact')
+    ) {
+      this.clearSessionStatsCacheForScope()
+    }
+  }
+
+  private async listAllGroupSessionIds(): Promise<string[]> {
+    const now = Date.now()
+    if (
+      this.allGroupSessionIdsCache &&
+      now - this.allGroupSessionIdsCache.updatedAt <= this.allGroupSessionIdsCacheTtlMs
+    ) {
+      return this.allGroupSessionIdsCache.ids
+    }
+
+    const result = await wcdbService.getSessions()
+    if (!result.success || !Array.isArray(result.sessions)) {
+      return []
+    }
+
+    const ids = new Set<string>()
+    for (const rowAny of result.sessions) {
+      const row = rowAny as Record<string, unknown>
+      const usernameRaw = row.username ?? row.userName ?? row.talker ?? row.sessionId
+      const username = String(usernameRaw || '').trim()
+      if (!username || !username.endsWith('@chatroom')) continue
+      ids.add(username)
+    }
+
+    const list = Array.from(ids)
+    this.allGroupSessionIdsCache = {
+      ids: list,
+      updatedAt: now
+    }
+    return list
  }

  private async collectSessionExportStats(
@@ -1715,6 +1938,95 @@ class ChatService {
    return { privateMutualGroupMap, groupMutualFriendMap }
  }

+  private buildEmptyExportSessionStats(sessionId: string, includeRelations: boolean): ExportSessionStats {
+    const isGroup = sessionId.endsWith('@chatroom')
+    const stats: ExportSessionStats = {
+      totalMessages: 0,
+      voiceMessages: 0,
+      imageMessages: 0,
+      videoMessages: 0,
+      emojiMessages: 0
+    }
+    if (isGroup) {
+      stats.groupMyMessages = 0
+      stats.groupActiveSpeakers = 0
+      stats.groupMemberCount = 0
+      if (includeRelations) {
+        stats.groupMutualFriends = 0
+      }
+    } else if (includeRelations) {
+      stats.privateMutualGroups = 0
+    }
+    return stats
+  }
+
+  private async computeSessionExportStats(
+    sessionId: string,
+    selfIdentitySet: Set<string>,
+    includeRelations: boolean
+  ): Promise<ExportSessionStats> {
+    const stats = await this.collectSessionExportStats(sessionId, selfIdentitySet)
+    const isGroup = sessionId.endsWith('@chatroom')
+
+    if (isGroup) {
+      const memberCountsResult = await wcdbService.getGroupMemberCounts([sessionId])
+      const memberCountMap = memberCountsResult.success && memberCountsResult.map ? memberCountsResult.map : {}
+      stats.groupMemberCount = typeof memberCountMap[sessionId] === 'number' ? Math.max(0, Math.floor(memberCountMap[sessionId])) : 0
+    }
+
+    if (includeRelations) {
+      if (isGroup) {
+        try {
+          const { groupMutualFriendMap } = await this.buildGroupRelationStats([sessionId], [], selfIdentitySet)
+          stats.groupMutualFriends = groupMutualFriendMap[sessionId] || 0
+        } catch {
+          stats.groupMutualFriends = 0
+        }
+      } else {
+        const allGroups = await this.listAllGroupSessionIds()
+        if (allGroups.length === 0) {
+          stats.privateMutualGroups = 0
+        } else {
+          try {
+            const { privateMutualGroupMap } = await this.buildGroupRelationStats(allGroups, [sessionId], selfIdentitySet)
+            stats.privateMutualGroups = privateMutualGroupMap[sessionId] || 0
+          } catch {
+            stats.privateMutualGroups = 0
+          }
+        }
+      }
+    }
+
+    return stats
+  }
+
+  private async getOrComputeSessionExportStats(
+    sessionId: string,
+    includeRelations: boolean,
+    selfIdentitySet: Set<string>
+  ): Promise<ExportSessionStats> {
+    const scopedKey = this.buildScopedSessionStatsKey(sessionId)
+
+    if (!includeRelations) {
+      const pendingFull = this.sessionStatsPendingFull.get(scopedKey)
+      if (pendingFull) return pendingFull
+      const pendingBasic = this.sessionStatsPendingBasic.get(scopedKey)
+      if (pendingBasic) return pendingBasic
+    } else {
+      const pendingFull = this.sessionStatsPendingFull.get(scopedKey)
+      if (pendingFull) return pendingFull
+    }
+
+    const targetMap = includeRelations ? this.sessionStatsPendingFull : this.sessionStatsPendingBasic
+    const pending = this.computeSessionExportStats(sessionId, selfIdentitySet, includeRelations)
+    targetMap.set(scopedKey, pending)
+    try {
+      return await pending
+    } finally {
+      targetMap.delete(scopedKey)
+    }
+  }
+
  /**
   * HTTP API 复用消息解析逻辑，确保和应用内展示一致。
   */
@@ -3600,6 +3912,14 @@ class ChatService {
      this.voiceTranscriptPending.clear()
    }

+    if (includeMessages || includeContacts) {
+      this.sessionStatsMemoryCache.clear()
+      this.sessionStatsPendingBasic.clear()
+      this.sessionStatsPendingFull.clear()
+      this.allGroupSessionIdsCache = null
+      this.sessionStatsCacheService.clearAll()
+    }
+
    for (const state of this.hardlinkCache.values()) {
      try {
        state.db?.close()
@@ -4036,9 +4356,11 @@ class ChatService {
    }
  }

-  async getExportSessionStats(sessionIds: string[]): Promise<{
+  async getExportSessionStats(sessionIds: string[], options: ExportSessionStatsOptions = {}): Promise<{
    success: boolean
    data?: Record<string, ExportSessionStats>
+    cache?: Record<string, ExportSessionStatsCacheMeta>
+    needsRefresh?: string[]
    error?: string
  }> {
    try {
@@ -4046,6 +4368,11 @@ class ChatService {
      if (!connectResult.success) {
        return { success: false, error: connectResult.error || '数据库未连接' }
      }
+      this.refreshSessionMessageCountCacheScope()
+
+      const includeRelations = options.includeRelations ?? true
+      const forceRefresh = options.forceRefresh === true
+      const allowStaleCache = options.allowStaleCache === true

      const normalizedSessionIds = Array.from(
        new Set(
@@ -4055,83 +4382,76 @@ class ChatService {
        )
      )
      if (normalizedSessionIds.length === 0) {
-        return { success: true, data: {} }
+        return { success: true, data: {}, cache: {} }
      }

-      const myWxid = this.configService.get('myWxid') || ''
-      const selfIdentitySet = new Set<string>(this.buildIdentityKeys(myWxid))
-
      const resultMap: Record<string, ExportSessionStats> = {}
-      await this.forEachWithConcurrency(normalizedSessionIds, 3, async (sessionId) => {
-        try {
-          resultMap[sessionId] = await this.collectSessionExportStats(sessionId, selfIdentitySet)
-        } catch {
-          resultMap[sessionId] = {
-            totalMessages: 0,
-            voiceMessages: 0,
-            imageMessages: 0,
-            videoMessages: 0,
-            emojiMessages: 0
+      const cacheMeta: Record<string, ExportSessionStatsCacheMeta> = {}
+      const needsRefreshSet = new Set<string>()
+      const pendingSessionIds: string[] = []
+      const now = Date.now()
+
+      for (const sessionId of normalizedSessionIds) {
+        if (!forceRefresh) {
+          const cachedResult = this.getSessionStatsCacheEntry(sessionId)
+          if (cachedResult && this.supportsRequestedRelation(cachedResult.entry, includeRelations)) {
+            const stale = now - cachedResult.entry.updatedAt > this.sessionStatsCacheTtlMs
+            if (!stale || allowStaleCache) {
+              resultMap[sessionId] = this.fromSessionStatsCacheStats(cachedResult.entry.stats)
+              cacheMeta[sessionId] = {
+                updatedAt: cachedResult.entry.updatedAt,
+                stale,
+                includeRelations: cachedResult.entry.includeRelations,
+                source: cachedResult.source
              }
+              if (stale) {
+                needsRefreshSet.add(sessionId)
+              }
+              continue
+            }
+          }
+          if (allowStaleCache) {
+            needsRefreshSet.add(sessionId)
+            continue
+          }
+        }
+        pendingSessionIds.push(sessionId)
+      }
+
+      if (pendingSessionIds.length > 0) {
+        const myWxid = this.configService.get('myWxid') || ''
+        const selfIdentitySet = new Set<string>(this.buildIdentityKeys(myWxid))
+        await this.forEachWithConcurrency(pendingSessionIds, 3, async (sessionId) => {
+          try {
+            const stats = await this.getOrComputeSessionExportStats(sessionId, includeRelations, selfIdentitySet)
+            resultMap[sessionId] = stats
+            const updatedAt = this.setSessionStatsCacheEntry(sessionId, stats, includeRelations)
+            cacheMeta[sessionId] = {
+              updatedAt,
+              stale: false,
+              includeRelations,
+              source: 'fresh'
+            }
+          } catch {
+            resultMap[sessionId] = this.buildEmptyExportSessionStats(sessionId, includeRelations)
          }
        })
-
-      const groupSessionIds = normalizedSessionIds.filter((id) => id.endsWith('@chatroom'))
-      const privateSessionIds = normalizedSessionIds.filter((id) => !id.endsWith('@chatroom'))
-
-      for (const privateId of privateSessionIds) {
-        resultMap[privateId] = {
-          ...resultMap[privateId],
-          privateMutualGroups: resultMap[privateId]?.privateMutualGroups ?? 0
-        }
-      }
-      for (const groupId of groupSessionIds) {
-        resultMap[groupId] = {
-          ...resultMap[groupId],
-          groupMyMessages: resultMap[groupId]?.groupMyMessages ?? 0,
-          groupActiveSpeakers: resultMap[groupId]?.groupActiveSpeakers ?? 0,
-          groupMemberCount: resultMap[groupId]?.groupMemberCount ?? 0,
-          groupMutualFriends: resultMap[groupId]?.groupMutualFriends ?? 0
-        }
      }

-      if (groupSessionIds.length > 0) {
-        const memberCountsResult = await wcdbService.getGroupMemberCounts(groupSessionIds)
-        const memberCountMap = memberCountsResult.success && memberCountsResult.map ? memberCountsResult.map : {}
-        for (const groupId of groupSessionIds) {
-          resultMap[groupId] = {
-            ...resultMap[groupId],
-            groupMemberCount: typeof memberCountMap[groupId] === 'number' ? memberCountMap[groupId] : 0
+      const response: {
+        success: boolean
+        data?: Record<string, ExportSessionStats>
+        cache?: Record<string, ExportSessionStatsCacheMeta>
+        needsRefresh?: string[]
+      } = {
+        success: true,
+        data: resultMap,
+        cache: cacheMeta
      }
+      if (needsRefreshSet.size > 0) {
+        response.needsRefresh = Array.from(needsRefreshSet)
      }
-      }
-
-      if (groupSessionIds.length > 0) {
-        try {
-          const { privateMutualGroupMap, groupMutualFriendMap } = await this.buildGroupRelationStats(
-            groupSessionIds,
-            privateSessionIds,
-            selfIdentitySet
-          )
-
-          for (const privateId of privateSessionIds) {
-            resultMap[privateId] = {
-              ...resultMap[privateId],
-              privateMutualGroups: privateMutualGroupMap[privateId] || 0
-            }
-          }
-          for (const groupId of groupSessionIds) {
-            resultMap[groupId] = {
-              ...resultMap[groupId],
-              groupMutualFriends: groupMutualFriendMap[groupId] || 0
-            }
-          }
-        } catch {
-          // 群成员关系统计失败时保留默认值，避免影响主列表展示
-        }
-      }
-
-      return { success: true, data: resultMap }
+      return response
    } catch (e) {
      console.error('ChatService: 获取导出会话统计失败:', e)
      return { success: false, error: String(e) }
--- a/electron/services/exportService.ts
+++ b/electron/services/exportService.ts
@@ -70,6 +70,7 @@ const MESSAGE_TYPE_MAP: Record<number, number> = {

 export interface ExportOptions {
  format: 'chatlab' | 'chatlab-jsonl' | 'json' | 'arkme-json' | 'html' | 'txt' | 'excel' | 'weclone' | 'sql'
+  contentType?: 'text' | 'voice' | 'image' | 'video' | 'emoji'
  dateRange?: { start: number; end: number } | null
  senderUsername?: string
  fileNameSuffix?: string
@@ -104,6 +105,9 @@ interface MediaExportItem {
  posterDataUrl?: string
 }

+type MessageCollectMode = 'full' | 'text-fast' | 'media-fast'
+type MediaContentType = 'voice' | 'image' | 'video' | 'emoji'
+
 export interface ExportProgress {
  current: number
  total: number
@@ -159,6 +163,85 @@ class ExportService {
    return Math.max(1, Math.min(raw, max))
  }

+  private isMediaExportEnabled(options: ExportOptions): boolean {
+    return options.exportMedia === true &&
+      Boolean(options.exportImages || options.exportVoices || options.exportVideos || options.exportEmojis)
+  }
+
+  private isUnboundedDateRange(dateRange?: { start: number; end: number } | null): boolean {
+    if (!dateRange) return true
+    const start = Number.isFinite(dateRange.start) ? dateRange.start : 0
+    const end = Number.isFinite(dateRange.end) ? dateRange.end : 0
+    return start <= 0 && end <= 0
+  }
+
+  private shouldUseFastTextCollection(options: ExportOptions): boolean {
+    // 文本批量导出优先走轻量采集：不做媒体字段预提取，减少 CPU 与内存占用
+    return !this.isMediaExportEnabled(options)
+  }
+
+  private getMediaContentType(options: ExportOptions): MediaContentType | null {
+    const value = options.contentType
+    if (value === 'voice' || value === 'image' || value === 'video' || value === 'emoji') {
+      return value
+    }
+    return null
+  }
+
+  private isMediaContentBatchExport(options: ExportOptions): boolean {
+    return this.getMediaContentType(options) !== null
+  }
+
+  private getTargetMediaLocalTypes(options: ExportOptions): Set<number> {
+    const mediaContentType = this.getMediaContentType(options)
+    if (mediaContentType === 'voice') return new Set([34])
+    if (mediaContentType === 'image') return new Set([3])
+    if (mediaContentType === 'video') return new Set([43])
+    if (mediaContentType === 'emoji') return new Set([47])
+
+    const selected = new Set<number>()
+    if (options.exportImages) selected.add(3)
+    if (options.exportVoices) selected.add(34)
+    if (options.exportVideos) selected.add(43)
+    if (options.exportEmojis) selected.add(47)
+    return selected
+  }
+
+  private resolveCollectMode(options: ExportOptions): MessageCollectMode {
+    if (this.isMediaContentBatchExport(options)) {
+      return 'media-fast'
+    }
+    return this.shouldUseFastTextCollection(options) ? 'text-fast' : 'full'
+  }
+
+  private resolveCollectParams(options: ExportOptions): { mode: MessageCollectMode; targetMediaTypes?: Set<number> } {
+    const mode = this.resolveCollectMode(options)
+    if (mode === 'media-fast') {
+      const targetMediaTypes = this.getTargetMediaLocalTypes(options)
+      if (targetMediaTypes.size > 0) {
+        return { mode, targetMediaTypes }
+      }
+    }
+    return { mode }
+  }
+
+  private shouldDecodeMessageContentInFastMode(localType: number): boolean {
+    // 这些类型在文本导出里只需要占位符，无需解码完整 XML / 压缩内容
+    if (localType === 3 || localType === 34 || localType === 42 || localType === 43 || localType === 47) {
+      return false
+    }
+    return true
+  }
+
+  private shouldDecodeMessageContentInMediaMode(localType: number, targetMediaTypes: Set<number> | null): boolean {
+    if (!targetMediaTypes || !targetMediaTypes.has(localType)) return false
+    // 语音导出仅需要 localId 读取音频数据，不依赖 XML 内容
+    if (localType === 34) return false
+    // 图片/视频/表情可能需要从 XML 提取 md5/datName/cdnUrl
+    if (localType === 3 || localType === 43 || localType === 47) return true
+    return false
+  }
+
  private cleanAccountDirName(dirName: string): string {
    const trimmed = dirName.trim()
    if (!trimmed) return trimmed
@@ -1620,7 +1703,10 @@ class ExportService {
      }

      const msgId = String(msg.localId)
-      const fileName = `voice_${msgId}.wav`
+      const safeSession = this.cleanAccountDirName(sessionId)
+        .replace(/[^a-zA-Z0-9_-]/g, '_')
+        .slice(0, 48) || 'session'
+      const fileName = `voice_${safeSession}_${msgId}.wav`
      const destPath = path.join(voicesDir, fileName)

      // 如果已存在则跳过
@@ -1906,21 +1992,35 @@ class ExportService {
    sessionId: string,
    cleanedMyWxid: string,
    dateRange?: { start: number; end: number } | null,
-    senderUsernameFilter?: string
+    senderUsernameFilter?: string,
+    collectMode: MessageCollectMode = 'full',
+    targetMediaTypes?: Set<number>
  ): Promise<{ rows: any[]; memberSet: Map<string, { member: ChatLabMember; avatarUrl?: string }>; firstTime: number | null; lastTime: number | null }> {
    const rows: any[] = []
    const memberSet = new Map<string, { member: ChatLabMember; avatarUrl?: string }>()
    const senderSet = new Set<string>()
    let firstTime: number | null = null
    let lastTime: number | null = null
+    const mediaTypeFilter = collectMode === 'media-fast' && targetMediaTypes && targetMediaTypes.size > 0
+      ? targetMediaTypes
+      : null

    // 修复时间范围：0 表示不限制，而不是时间戳 0
    const beginTime = dateRange?.start || 0
    const endTime = dateRange?.end && dateRange.end > 0 ? dateRange.end : 0
    
-    const cursor = await wcdbService.openMessageCursor(
+    const batchSize = (collectMode === 'text-fast' || collectMode === 'media-fast') ? 2000 : 500
+    const cursor = collectMode === 'media-fast'
+      ? await wcdbService.openMessageCursorLite(
        sessionId,
-      500,
+        batchSize,
+        true,
+        beginTime,
+        endTime
+      )
+      : await wcdbService.openMessageCursor(
+        sessionId,
+        batchSize,
        true,
        beginTime,
        endTime
@@ -1950,8 +2050,16 @@ class ExportService {
            if (createTime < dateRange.start || createTime > dateRange.end) continue
          }

-          const content = this.decodeMessageContent(row.message_content, row.compress_content)
          const localType = parseInt(row.local_type || row.type || '1', 10)
+          if (mediaTypeFilter && !mediaTypeFilter.has(localType)) {
+            continue
+          }
+          const shouldDecodeContent = collectMode === 'full'
+            || (collectMode === 'text-fast' && this.shouldDecodeMessageContentInFastMode(localType))
+            || (collectMode === 'media-fast' && this.shouldDecodeMessageContentInMediaMode(localType, mediaTypeFilter))
+          const content = shouldDecodeContent
+            ? this.decodeMessageContent(row.message_content, row.compress_content)
+            : ''
          const senderUsername = row.sender_username || ''
          const isSendRaw = row.computed_is_send ?? row.is_send ?? '0'
          const isSend = parseInt(isSendRaw, 10) === 1
@@ -1987,7 +2095,7 @@ class ExportService {
          }
          senderSet.add(actualSender)

-          // 提取媒体相关字段
+          // 提取媒体相关字段（轻量模式下跳过）
          let imageMd5: string | undefined
          let imageDatName: string | undefined
          let emojiCdnUrl: string | undefined
@@ -1995,24 +2103,33 @@ class ExportService {
          let videoMd5: string | undefined
          let chatRecordList: any[] | undefined

+          if (collectMode === 'full' || collectMode === 'media-fast') {
+            // 优先复用游标返回的字段，缺失时再回退到 XML 解析。
+            imageMd5 = String(row.image_md5 || row.imageMd5 || '').trim() || undefined
+            imageDatName = String(row.image_dat_name || row.imageDatName || '').trim() || undefined
+            emojiCdnUrl = String(row.emoji_cdn_url || row.emojiCdnUrl || '').trim() || undefined
+            emojiMd5 = String(row.emoji_md5 || row.emojiMd5 || '').trim() || undefined
+            videoMd5 = String(row.video_md5 || row.videoMd5 || '').trim() || undefined
+
            if (localType === 3 && content) {
              // 图片消息
-            imageMd5 = this.extractImageMd5(content)
-            imageDatName = this.extractImageDatName(content)
+              imageMd5 = imageMd5 || this.extractImageMd5(content)
+              imageDatName = imageDatName || this.extractImageDatName(content)
            } else if (localType === 47 && content) {
              // 动画表情
-            emojiCdnUrl = this.extractEmojiUrl(content)
-            emojiMd5 = this.extractEmojiMd5(content)
+              emojiCdnUrl = emojiCdnUrl || this.extractEmojiUrl(content)
+              emojiMd5 = emojiMd5 || this.extractEmojiMd5(content)
            } else if (localType === 43 && content) {
              // 视频消息
-            videoMd5 = this.extractVideoMd5(content)
-          } else if (localType === 49 && content) {
+              videoMd5 = videoMd5 || this.extractVideoMd5(content)
+            } else if (collectMode === 'full' && localType === 49 && content) {
              // 检查是否是聊天记录消息（type=19）
              const xmlType = this.extractXmlValue(content, 'type')
              if (xmlType === '19') {
                chatRecordList = this.parseChatHistory(content)
              }
            }
+          }

          rows.push({
            localId,
@@ -2045,6 +2162,10 @@ class ExportService {
      }
    }

+    if (collectMode === 'media-fast' && mediaTypeFilter && rows.length > 0) {
+      await this.backfillMediaFieldsFromMessageDetail(sessionId, rows, mediaTypeFilter)
+    }
+
    if (senderSet.size > 0) {
      const usernames = Array.from(senderSet)
      const [nameResult, avatarResult] = await Promise.all([
@@ -2072,6 +2193,60 @@ class ExportService {
    return { rows, memberSet, firstTime, lastTime }
  }

+  private async backfillMediaFieldsFromMessageDetail(
+    sessionId: string,
+    rows: any[],
+    targetMediaTypes: Set<number>
+  ): Promise<void> {
+    const needsBackfill = rows.filter((msg) => {
+      if (!targetMediaTypes.has(msg.localType)) return false
+      if (msg.localType === 3) return !msg.imageMd5 && !msg.imageDatName
+      if (msg.localType === 47) return !msg.emojiMd5 && !msg.emojiCdnUrl
+      if (msg.localType === 43) return !msg.videoMd5
+      return false
+    })
+    if (needsBackfill.length === 0) return
+
+    const DETAIL_CONCURRENCY = 6
+    await parallelLimit(needsBackfill, DETAIL_CONCURRENCY, async (msg) => {
+      const localId = Number(msg.localId || 0)
+      if (!Number.isFinite(localId) || localId <= 0) return
+
+      try {
+        const detail = await wcdbService.getMessageById(sessionId, localId)
+        if (!detail.success || !detail.message) return
+
+        const row = detail.message as any
+        const rawMessageContent = row.message_content ?? row.messageContent ?? row.msg_content ?? row.msgContent ?? ''
+        const rawCompressContent = row.compress_content ?? row.compressContent ?? row.msg_compress_content ?? row.msgCompressContent ?? ''
+        const content = this.decodeMessageContent(rawMessageContent, rawCompressContent)
+
+        if (msg.localType === 3) {
+          const imageMd5 = String(row.image_md5 || row.imageMd5 || '').trim() || this.extractImageMd5(content)
+          const imageDatName = String(row.image_dat_name || row.imageDatName || '').trim() || this.extractImageDatName(content)
+          if (imageMd5) msg.imageMd5 = imageMd5
+          if (imageDatName) msg.imageDatName = imageDatName
+          return
+        }
+
+        if (msg.localType === 47) {
+          const emojiMd5 = String(row.emoji_md5 || row.emojiMd5 || '').trim() || this.extractEmojiMd5(content)
+          const emojiCdnUrl = String(row.emoji_cdn_url || row.emojiCdnUrl || '').trim() || this.extractEmojiUrl(content)
+          if (emojiMd5) msg.emojiMd5 = emojiMd5
+          if (emojiCdnUrl) msg.emojiCdnUrl = emojiCdnUrl
+          return
+        }
+
+        if (msg.localType === 43) {
+          const videoMd5 = String(row.video_md5 || row.videoMd5 || '').trim() || this.extractVideoMd5(content)
+          if (videoMd5) msg.videoMd5 = videoMd5
+        }
+      } catch (error) {
+        // 详情补取失败时保持降级导出（占位符），避免中断整批任务。
+      }
+    })
+  }
+
  // 补齐群成员，避免只导出发言者导致头像缺失
  private async mergeGroupMembers(
    chatroomId: string,
@@ -2631,7 +2806,15 @@ class ExportService {
        phase: 'preparing'
      })

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )
      const allMessages = collected.rows

      // 如果没有消息,不创建文件
@@ -3026,7 +3209,15 @@ class ExportService {
        phase: 'preparing'
      })

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )

      // 如果没有消息,不创建文件
      if (collected.rows.length === 0) {
@@ -3600,7 +3791,15 @@ class ExportService {
        phase: 'preparing'
      })

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )

      // 如果没有消息,不创建文件
      if (collected.rows.length === 0) {
@@ -4087,7 +4286,15 @@ class ExportService {
        phase: 'preparing'
      })

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )

      // 如果没有消息,不创建文件
      if (collected.rows.length === 0) {
@@ -4367,7 +4574,15 @@ class ExportService {
        phase: 'preparing'
      })

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )
      if (collected.rows.length === 0) {
        return { success: false, error: '该会话在指定时间范围内没有消息' }
      }
@@ -4709,7 +4924,15 @@ class ExportService {
        await this.ensureVoiceModel(onProgress)
      }

-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collectParams = this.resolveCollectParams(options)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        collectParams.mode,
+        collectParams.targetMediaTypes
+      )

      // 如果没有消息,不创建文件
      if (collected.rows.length === 0) {
@@ -5187,7 +5410,13 @@ class ExportService {

    for (const sessionId of sessionIds) {
      const sessionInfo = await this.getContactInfo(sessionId)
-      const collected = await this.collectMessages(sessionId, cleanedMyWxid, options.dateRange, options.senderUsername)
+      const collected = await this.collectMessages(
+        sessionId,
+        cleanedMyWxid,
+        options.dateRange,
+        options.senderUsername,
+        'text-fast'
+      )
      const msgs = collected.rows
      const voiceMsgs = msgs.filter(m => m.localType === 34)
      const mediaMsgs = msgs.filter(m => {
@@ -5264,8 +5493,12 @@ class ExportService {
        return { success: false, successCount: 0, failCount: sessionIds.length, error: conn.error }
      }

-      const exportMediaEnabled = options.exportMedia === true &&
-        Boolean(options.exportImages || options.exportVoices || options.exportVideos || options.exportEmojis)
+      const effectiveOptions: ExportOptions = this.isMediaContentBatchExport(options)
+        ? { ...options, exportVoiceAsText: false }
+        : options
+
+      const exportMediaEnabled = effectiveOptions.exportMedia === true &&
+        Boolean(effectiveOptions.exportImages || effectiveOptions.exportVoices || effectiveOptions.exportVideos || effectiveOptions.exportEmojis)
      const rawWriteLayout = this.configService.get('exportWriteLayout')
      const writeLayout = rawWriteLayout === 'A' || rawWriteLayout === 'B' || rawWriteLayout === 'C'
        ? rawWriteLayout
@@ -5277,17 +5510,29 @@ class ExportService {
        fs.mkdirSync(exportBaseDir, { recursive: true })
      }
      const sessionLayout = exportMediaEnabled
-        ? (options.sessionLayout ?? 'per-session')
+        ? (effectiveOptions.sessionLayout ?? 'per-session')
        : 'shared'
      let completedCount = 0
      const defaultConcurrency = exportMediaEnabled ? 2 : 4
-      const rawConcurrency = typeof options.exportConcurrency === 'number'
-        ? Math.floor(options.exportConcurrency)
+      const rawConcurrency = typeof effectiveOptions.exportConcurrency === 'number'
+        ? Math.floor(effectiveOptions.exportConcurrency)
        : defaultConcurrency
      const clampedConcurrency = Math.max(1, Math.min(rawConcurrency, 6))
-      const sessionConcurrency = (exportMediaEnabled && sessionLayout === 'shared')
-        ? 1
-        : clampedConcurrency
+      const sessionConcurrency = clampedConcurrency
+      const emptySessionIds = new Set<string>()
+      const canFastSkipEmptySessions = this.isUnboundedDateRange(effectiveOptions.dateRange) &&
+        !String(effectiveOptions.senderUsername || '').trim()
+      if (canFastSkipEmptySessions && sessionIds.length > 0) {
+        const countsResult = await wcdbService.getMessageCounts(sessionIds)
+        if (countsResult.success && countsResult.counts) {
+          for (const sessionId of sessionIds) {
+            const count = countsResult.counts[sessionId]
+            if (typeof count === 'number' && Number.isFinite(count) && count <= 0) {
+              emptySessionIds.add(sessionId)
+            }
+          }
+        }
+      }
      const queue = [...sessionIds]
      let pauseRequested = false
      let stopRequested = false
@@ -5295,6 +5540,21 @@ class ExportService {
      const runOne = async (sessionId: string) => {
        const sessionInfo = await this.getContactInfo(sessionId)

+        if (emptySessionIds.has(sessionId)) {
+          failCount++
+          failedSessionIds.push(sessionId)
+          completedCount++
+          onProgress?.({
+            current: completedCount,
+            total: sessionIds.length,
+            currentSession: sessionInfo.displayName,
+            currentSessionId: sessionId,
+            phase: 'exporting',
+            phaseLabel: '该会话没有消息，已跳过'
+          })
+          return
+        }
+
        const sessionProgress = (progress: ExportProgress) => {
          onProgress?.({
            ...progress,
@@ -5314,7 +5574,7 @@ class ExportService {

        const sanitizeName = (value: string) => value.replace(/[<>:"\/\\|?*]/g, '_').replace(/\.+$/, '').trim()
        const baseName = sanitizeName(sessionInfo.displayName || sessionId) || sanitizeName(sessionId) || 'session'
-        const suffix = sanitizeName(options.fileNameSuffix || '')
+        const suffix = sanitizeName(effectiveOptions.fileNameSuffix || '')
        const safeName = suffix ? `${baseName}_${suffix}` : baseName
        const fileNameWithPrefix = `${await this.getSessionFilePrefix(sessionId)}${safeName}`
        const useSessionFolder = sessionLayout === 'per-session'
@@ -5325,28 +5585,28 @@ class ExportService {
        }

        let ext = '.json'
-        if (options.format === 'chatlab-jsonl') ext = '.jsonl'
-        else if (options.format === 'excel') ext = '.xlsx'
-        else if (options.format === 'txt') ext = '.txt'
-        else if (options.format === 'weclone') ext = '.csv'
-        else if (options.format === 'html') ext = '.html'
+        if (effectiveOptions.format === 'chatlab-jsonl') ext = '.jsonl'
+        else if (effectiveOptions.format === 'excel') ext = '.xlsx'
+        else if (effectiveOptions.format === 'txt') ext = '.txt'
+        else if (effectiveOptions.format === 'weclone') ext = '.csv'
+        else if (effectiveOptions.format === 'html') ext = '.html'
        const outputPath = path.join(sessionDir, `${fileNameWithPrefix}${ext}`)

        let result: { success: boolean; error?: string }
-        if (options.format === 'json' || options.format === 'arkme-json') {
-          result = await this.exportSessionToDetailedJson(sessionId, outputPath, options, sessionProgress)
-        } else if (options.format === 'chatlab' || options.format === 'chatlab-jsonl') {
-          result = await this.exportSessionToChatLab(sessionId, outputPath, options, sessionProgress)
-        } else if (options.format === 'excel') {
-          result = await this.exportSessionToExcel(sessionId, outputPath, options, sessionProgress)
-        } else if (options.format === 'txt') {
-          result = await this.exportSessionToTxt(sessionId, outputPath, options, sessionProgress)
-        } else if (options.format === 'weclone') {
-          result = await this.exportSessionToWeCloneCsv(sessionId, outputPath, options, sessionProgress)
-        } else if (options.format === 'html') {
-          result = await this.exportSessionToHtml(sessionId, outputPath, options, sessionProgress)
+        if (effectiveOptions.format === 'json' || effectiveOptions.format === 'arkme-json') {
+          result = await this.exportSessionToDetailedJson(sessionId, outputPath, effectiveOptions, sessionProgress)
+        } else if (effectiveOptions.format === 'chatlab' || effectiveOptions.format === 'chatlab-jsonl') {
+          result = await this.exportSessionToChatLab(sessionId, outputPath, effectiveOptions, sessionProgress)
+        } else if (effectiveOptions.format === 'excel') {
+          result = await this.exportSessionToExcel(sessionId, outputPath, effectiveOptions, sessionProgress)
+        } else if (effectiveOptions.format === 'txt') {
+          result = await this.exportSessionToTxt(sessionId, outputPath, effectiveOptions, sessionProgress)
+        } else if (effectiveOptions.format === 'weclone') {
+          result = await this.exportSessionToWeCloneCsv(sessionId, outputPath, effectiveOptions, sessionProgress)
+        } else if (effectiveOptions.format === 'html') {
+          result = await this.exportSessionToHtml(sessionId, outputPath, effectiveOptions, sessionProgress)
        } else {
-          result = { success: false, error: `不支持的格式: ${options.format}` }
+          result = { success: false, error: `不支持的格式: ${effectiveOptions.format}` }
        }

        if (result.success) {
--- a/electron/services/groupAnalyticsService.ts
+++ b/electron/services/groupAnalyticsService.ts
@@ -24,6 +24,11 @@ export interface GroupMember {
  isOwner?: boolean
 }

+export interface GroupMembersPanelEntry extends GroupMember {
+  isFriend: boolean
+  messageCount: number
+}
+
 export interface GroupMessageRank {
  member: GroupMember
  messageCount: number
@@ -44,8 +49,26 @@ export interface GroupMediaStats {
  total: number
 }

+interface GroupMemberContactInfo {
+  remark: string
+  nickName: string
+  alias: string
+  username: string
+  userName: string
+  encryptUsername: string
+  encryptUserName: string
+  localType: number
+}
+
 class GroupAnalyticsService {
  private configService: ConfigService
+  private readonly groupMembersPanelCacheTtlMs = 10 * 60 * 1000
+  private readonly groupMembersPanelCache = new Map<string, { updatedAt: number; data: GroupMembersPanelEntry[] }>()
+  private readonly groupMembersPanelInFlight = new Map<
+    string,
+    Promise<{ success: boolean; data?: GroupMembersPanelEntry[]; error?: string; fromCache?: boolean; updatedAt?: number }>
+  >()
+  private readonly friendExcludeNames = new Set(['medianote', 'floatbottle', 'qmessage', 'qqmail', 'fmessage'])

  constructor() {
    this.configService = new ConfigService()
@@ -419,6 +442,166 @@ class GroupAnalyticsService {
    return Array.from(set)
  }

+  private toNonNegativeInteger(value: unknown): number {
+    const parsed = Number(value)
+    if (!Number.isFinite(parsed)) return 0
+    return Math.max(0, Math.floor(parsed))
+  }
+
+  private pickStringField(row: Record<string, unknown>, keys: string[]): string {
+    for (const key of keys) {
+      const value = row[key]
+      if (value == null) continue
+      const text = String(value).trim()
+      if (text) return text
+    }
+    return ''
+  }
+
+  private pickIntegerField(row: Record<string, unknown>, keys: string[], fallback: number = 0): number {
+    for (const key of keys) {
+      const value = row[key]
+      if (value == null || value === '') continue
+      const parsed = Number(value)
+      if (Number.isFinite(parsed)) return Math.floor(parsed)
+    }
+    return fallback
+  }
+
+  private buildGroupMembersPanelCacheKey(chatroomId: string): string {
+    const dbPath = String(this.configService.get('dbPath') || '').trim()
+    const wxid = this.cleanAccountDirName(String(this.configService.get('myWxid') || '').trim())
+    return `${dbPath}::${wxid}::${chatroomId}`
+  }
+
+  private pruneGroupMembersPanelCache(maxEntries: number = 80): void {
+    if (this.groupMembersPanelCache.size <= maxEntries) return
+    const entries = Array.from(this.groupMembersPanelCache.entries())
+      .sort((a, b) => a[1].updatedAt - b[1].updatedAt)
+    const removeCount = this.groupMembersPanelCache.size - maxEntries
+    for (let i = 0; i < removeCount; i += 1) {
+      this.groupMembersPanelCache.delete(entries[i][0])
+    }
+  }
+
+  private async buildGroupMemberContactLookup(usernames: string[]): Promise<Map<string, GroupMemberContactInfo>> {
+    const lookup = new Map<string, GroupMemberContactInfo>()
+    const candidates = this.buildIdCandidates(usernames)
+    if (candidates.length === 0) return lookup
+
+    const batchSize = 200
+    for (let i = 0; i < candidates.length; i += batchSize) {
+      const batch = candidates.slice(i, i + batchSize)
+      if (batch.length === 0) continue
+
+      const inList = batch.map((username) => `'${username.replace(/'/g, "''")}'`).join(',')
+      const sql = `SELECT * FROM contact WHERE username IN (${inList})`
+      const result = await wcdbService.execQuery('contact', null, sql)
+      if (!result.success || !result.rows) continue
+
+      for (const row of result.rows as Record<string, unknown>[]) {
+        const contact: GroupMemberContactInfo = {
+          remark: this.pickStringField(row, ['remark', 'WCDB_CT_remark']),
+          nickName: this.pickStringField(row, ['nick_name', 'nickName', 'WCDB_CT_nick_name']),
+          alias: this.pickStringField(row, ['alias', 'WCDB_CT_alias']),
+          username: this.pickStringField(row, ['username', 'WCDB_CT_username']),
+          userName: this.pickStringField(row, ['user_name', 'userName', 'WCDB_CT_user_name']),
+          encryptUsername: this.pickStringField(row, ['encrypt_username', 'encryptUsername', 'WCDB_CT_encrypt_username']),
+          encryptUserName: this.pickStringField(row, ['encrypt_user_name', 'encryptUserName', 'WCDB_CT_encrypt_user_name']),
+          localType: this.pickIntegerField(row, ['local_type', 'localType', 'WCDB_CT_local_type'], 0)
+        }
+        const lookupKeys = this.buildIdCandidates([
+          contact.username,
+          contact.userName,
+          contact.encryptUsername,
+          contact.encryptUserName,
+          contact.alias
+        ])
+        for (const key of lookupKeys) {
+          const normalized = key.toLowerCase()
+          if (!lookup.has(normalized)) {
+            lookup.set(normalized, contact)
+          }
+        }
+      }
+    }
+    return lookup
+  }
+
+  private resolveContactByCandidates(
+    lookup: Map<string, GroupMemberContactInfo>,
+    candidates: Array<string | undefined | null>
+  ): GroupMemberContactInfo | undefined {
+    const ids = this.buildIdCandidates(candidates)
+    for (const id of ids) {
+      const hit = lookup.get(id.toLowerCase())
+      if (hit) return hit
+    }
+    return undefined
+  }
+
+  private async buildGroupMessageCountLookup(chatroomId: string): Promise<Map<string, number>> {
+    const lookup = new Map<string, number>()
+    const result = await wcdbService.getGroupStats(chatroomId, 0, 0)
+    if (!result.success || !result.data) return lookup
+
+    const sessionData = result.data?.sessions?.[chatroomId]
+    if (!sessionData || !sessionData.senders) return lookup
+
+    const idMap = result.data.idMap || {}
+    for (const [senderId, rawCount] of Object.entries(sessionData.senders as Record<string, number>)) {
+      const username = String(idMap[senderId] || senderId || '').trim()
+      if (!username) continue
+      const count = this.toNonNegativeInteger(rawCount)
+      const keys = this.buildIdCandidates([username])
+      for (const key of keys) {
+        const normalized = key.toLowerCase()
+        const prev = lookup.get(normalized) || 0
+        if (count > prev) {
+          lookup.set(normalized, count)
+        }
+      }
+    }
+    return lookup
+  }
+
+  private resolveMessageCountByCandidates(
+    lookup: Map<string, number>,
+    candidates: Array<string | undefined | null>
+  ): number {
+    let maxCount = 0
+    const ids = this.buildIdCandidates(candidates)
+    for (const id of ids) {
+      const count = lookup.get(id.toLowerCase())
+      if (typeof count === 'number' && count > maxCount) {
+        maxCount = count
+      }
+    }
+    return maxCount
+  }
+
+  private isFriendMember(wxid: string, contact?: GroupMemberContactInfo): boolean {
+    const normalizedWxid = String(wxid || '').trim().toLowerCase()
+    if (!normalizedWxid) return false
+    if (normalizedWxid.includes('@chatroom') || normalizedWxid.startsWith('gh_')) return false
+    if (this.friendExcludeNames.has(normalizedWxid)) return false
+    if (!contact) return false
+    return contact.localType === 1
+  }
+
+  private sortGroupMembersPanelEntries(members: GroupMembersPanelEntry[]): GroupMembersPanelEntry[] {
+    return members.sort((a, b) => {
+      const ownerDiff = Number(Boolean(b.isOwner)) - Number(Boolean(a.isOwner))
+      if (ownerDiff !== 0) return ownerDiff
+
+      const friendDiff = Number(Boolean(b.isFriend)) - Number(Boolean(a.isFriend))
+      if (friendDiff !== 0) return friendDiff
+
+      if (a.messageCount !== b.messageCount) return b.messageCount - a.messageCount
+      return a.displayName.localeCompare(b.displayName, 'zh-Hans-CN')
+    })
+  }
+
  private resolveGroupNicknameByCandidates(groupNicknames: Map<string, string>, candidates: string[]): string {
    const idCandidates = this.buildIdCandidates(candidates)
    if (idCandidates.length === 0) return ''
@@ -606,6 +789,138 @@ class GroupAnalyticsService {
    }
  }

+  private async loadGroupMembersPanelDataFresh(
+    chatroomId: string
+  ): Promise<{ success: boolean; data?: GroupMembersPanelEntry[]; error?: string }> {
+    const membersResult = await wcdbService.getGroupMembers(chatroomId)
+    if (!membersResult.success || !membersResult.members) {
+      return { success: false, error: membersResult.error || '获取群成员失败' }
+    }
+
+    const members = membersResult.members as Array<{
+      username: string
+      avatarUrl?: string
+      originalName?: string
+      [key: string]: unknown
+    }>
+    if (members.length === 0) return { success: true, data: [] }
+
+    const usernames = members
+      .map((member) => String(member.username || '').trim())
+      .filter(Boolean)
+    if (usernames.length === 0) return { success: true, data: [] }
+
+    const displayNamesPromise = wcdbService.getDisplayNames(usernames)
+    const contactLookupPromise = this.buildGroupMemberContactLookup(usernames)
+    const ownerPromise = this.detectGroupOwnerUsername(chatroomId, members)
+    const messageCountLookupPromise = this.buildGroupMessageCountLookup(chatroomId)
+
+    const [displayNames, contactLookup, ownerUsername, messageCountLookup] = await Promise.all([
+      displayNamesPromise,
+      contactLookupPromise,
+      ownerPromise,
+      messageCountLookupPromise
+    ])
+
+    const nicknameCandidates = this.buildIdCandidates([
+      ...members.map((member) => member.username),
+      ...members.map((member) => member.originalName),
+      ...Array.from(contactLookup.values()).map((contact) => contact?.username),
+      ...Array.from(contactLookup.values()).map((contact) => contact?.userName),
+      ...Array.from(contactLookup.values()).map((contact) => contact?.encryptUsername),
+      ...Array.from(contactLookup.values()).map((contact) => contact?.encryptUserName),
+      ...Array.from(contactLookup.values()).map((contact) => contact?.alias)
+    ])
+    const groupNicknames = await this.getGroupNicknamesForRoom(chatroomId, nicknameCandidates)
+    const myWxid = this.cleanAccountDirName(this.configService.get('myWxid') || '')
+
+    const data: GroupMembersPanelEntry[] = members
+      .map((member) => {
+        const wxid = String(member.username || '').trim()
+        if (!wxid) return null
+
+        const contact = this.resolveContactByCandidates(contactLookup, [wxid, member.originalName])
+        const nickname = contact?.nickName || ''
+        const remark = contact?.remark || ''
+        const alias = contact?.alias || ''
+        const normalizedWxid = this.cleanAccountDirName(wxid)
+        const lookupCandidates = this.buildIdCandidates([
+          wxid,
+          member.originalName as string | undefined,
+          contact?.username,
+          contact?.userName,
+          contact?.encryptUsername,
+          contact?.encryptUserName,
+          alias
+        ])
+        if (normalizedWxid === myWxid) {
+          lookupCandidates.push(myWxid)
+        }
+        const groupNickname = this.resolveGroupNicknameByCandidates(groupNicknames, lookupCandidates)
+        const displayName = displayNames.success && displayNames.map ? (displayNames.map[wxid] || wxid) : wxid
+
+        return {
+          username: wxid,
+          displayName,
+          nickname,
+          alias,
+          remark,
+          groupNickname,
+          avatarUrl: member.avatarUrl,
+          isOwner: Boolean(ownerUsername && ownerUsername === wxid),
+          isFriend: this.isFriendMember(wxid, contact),
+          messageCount: this.resolveMessageCountByCandidates(messageCountLookup, lookupCandidates)
+        }
+      })
+      .filter((member): member is GroupMembersPanelEntry => Boolean(member))
+
+    return { success: true, data: this.sortGroupMembersPanelEntries(data) }
+  }
+
+  async getGroupMembersPanelData(
+    chatroomId: string,
+    forceRefresh: boolean = false
+  ): Promise<{ success: boolean; data?: GroupMembersPanelEntry[]; error?: string; fromCache?: boolean; updatedAt?: number }> {
+    try {
+      const normalizedChatroomId = String(chatroomId || '').trim()
+      if (!normalizedChatroomId) return { success: false, error: '群聊ID不能为空' }
+
+      const cacheKey = this.buildGroupMembersPanelCacheKey(normalizedChatroomId)
+      const now = Date.now()
+      const cached = this.groupMembersPanelCache.get(cacheKey)
+      if (!forceRefresh && cached && now - cached.updatedAt < this.groupMembersPanelCacheTtlMs) {
+        return { success: true, data: cached.data, fromCache: true, updatedAt: cached.updatedAt }
+      }
+
+      if (!forceRefresh) {
+        const pending = this.groupMembersPanelInFlight.get(cacheKey)
+        if (pending) return pending
+      }
+
+      const requestPromise = (async () => {
+        const conn = await this.ensureConnected()
+        if (!conn.success) return { success: false, error: conn.error }
+
+        const fresh = await this.loadGroupMembersPanelDataFresh(normalizedChatroomId)
+        if (!fresh.success || !fresh.data) {
+          return { success: false, error: fresh.error || '获取群成员面板数据失败' }
+        }
+
+        const updatedAt = Date.now()
+        this.groupMembersPanelCache.set(cacheKey, { updatedAt, data: fresh.data })
+        this.pruneGroupMembersPanelCache()
+        return { success: true, data: fresh.data, fromCache: false, updatedAt }
+      })().finally(() => {
+        this.groupMembersPanelInFlight.delete(cacheKey)
+      })
+
+      this.groupMembersPanelInFlight.set(cacheKey, requestPromise)
+      return await requestPromise
+    } catch (e) {
+      return { success: false, error: String(e) }
+    }
+  }
+
  async getGroupMembers(chatroomId: string): Promise<{ success: boolean; data?: GroupMember[]; error?: string }> {
    try {
      const conn = await this.ensureConnected()
--- a/electron/services/sessionStatsCacheService.ts
+++ b/electron/services/sessionStatsCacheService.ts
@@ -0,0 +1,276 @@
+import { join, dirname } from 'path'
+import { existsSync, mkdirSync, readFileSync, writeFileSync, rmSync } from 'fs'
+import { ConfigService } from './config'
+
+const CACHE_VERSION = 1
+const MAX_SESSION_ENTRIES_PER_SCOPE = 2000
+const MAX_SCOPE_ENTRIES = 12
+
+export interface SessionStatsCacheStats {
+  totalMessages: number
+  voiceMessages: number
+  imageMessages: number
+  videoMessages: number
+  emojiMessages: number
+  firstTimestamp?: number
+  lastTimestamp?: number
+  privateMutualGroups?: number
+  groupMemberCount?: number
+  groupMyMessages?: number
+  groupActiveSpeakers?: number
+  groupMutualFriends?: number
+}
+
+export interface SessionStatsCacheEntry {
+  updatedAt: number
+  includeRelations: boolean
+  stats: SessionStatsCacheStats
+}
+
+interface SessionStatsScopeMap {
+  [sessionId: string]: SessionStatsCacheEntry
+}
+
+interface SessionStatsCacheStore {
+  version: number
+  scopes: Record<string, SessionStatsScopeMap>
+}
+
+function toNonNegativeInt(value: unknown): number | undefined {
+  if (typeof value !== 'number' || !Number.isFinite(value)) return undefined
+  return Math.max(0, Math.floor(value))
+}
+
+function normalizeStats(raw: unknown): SessionStatsCacheStats | null {
+  if (!raw || typeof raw !== 'object') return null
+  const source = raw as Record<string, unknown>
+
+  const totalMessages = toNonNegativeInt(source.totalMessages)
+  const voiceMessages = toNonNegativeInt(source.voiceMessages)
+  const imageMessages = toNonNegativeInt(source.imageMessages)
+  const videoMessages = toNonNegativeInt(source.videoMessages)
+  const emojiMessages = toNonNegativeInt(source.emojiMessages)
+
+  if (
+    totalMessages === undefined ||
+    voiceMessages === undefined ||
+    imageMessages === undefined ||
+    videoMessages === undefined ||
+    emojiMessages === undefined
+  ) {
+    return null
+  }
+
+  const normalized: SessionStatsCacheStats = {
+    totalMessages,
+    voiceMessages,
+    imageMessages,
+    videoMessages,
+    emojiMessages
+  }
+
+  const firstTimestamp = toNonNegativeInt(source.firstTimestamp)
+  if (firstTimestamp !== undefined) normalized.firstTimestamp = firstTimestamp
+
+  const lastTimestamp = toNonNegativeInt(source.lastTimestamp)
+  if (lastTimestamp !== undefined) normalized.lastTimestamp = lastTimestamp
+
+  const privateMutualGroups = toNonNegativeInt(source.privateMutualGroups)
+  if (privateMutualGroups !== undefined) normalized.privateMutualGroups = privateMutualGroups
+
+  const groupMemberCount = toNonNegativeInt(source.groupMemberCount)
+  if (groupMemberCount !== undefined) normalized.groupMemberCount = groupMemberCount
+
+  const groupMyMessages = toNonNegativeInt(source.groupMyMessages)
+  if (groupMyMessages !== undefined) normalized.groupMyMessages = groupMyMessages
+
+  const groupActiveSpeakers = toNonNegativeInt(source.groupActiveSpeakers)
+  if (groupActiveSpeakers !== undefined) normalized.groupActiveSpeakers = groupActiveSpeakers
+
+  const groupMutualFriends = toNonNegativeInt(source.groupMutualFriends)
+  if (groupMutualFriends !== undefined) normalized.groupMutualFriends = groupMutualFriends
+
+  return normalized
+}
+
+function normalizeEntry(raw: unknown): SessionStatsCacheEntry | null {
+  if (!raw || typeof raw !== 'object') return null
+  const source = raw as Record<string, unknown>
+  const updatedAt = toNonNegativeInt(source.updatedAt)
+  const includeRelations = typeof source.includeRelations === 'boolean' ? source.includeRelations : false
+  const stats = normalizeStats(source.stats)
+
+  if (updatedAt === undefined || !stats) {
+    return null
+  }
+
+  return {
+    updatedAt,
+    includeRelations,
+    stats
+  }
+}
+
+export class SessionStatsCacheService {
+  private readonly cacheFilePath: string
+  private store: SessionStatsCacheStore = {
+    version: CACHE_VERSION,
+    scopes: {}
+  }
+
+  constructor(cacheBasePath?: string) {
+    const basePath = cacheBasePath && cacheBasePath.trim().length > 0
+      ? cacheBasePath
+      : ConfigService.getInstance().getCacheBasePath()
+    this.cacheFilePath = join(basePath, 'session-stats.json')
+    this.ensureCacheDir()
+    this.load()
+  }
+
+  private ensureCacheDir(): void {
+    const dir = dirname(this.cacheFilePath)
+    if (!existsSync(dir)) {
+      mkdirSync(dir, { recursive: true })
+    }
+  }
+
+  private load(): void {
+    if (!existsSync(this.cacheFilePath)) return
+    try {
+      const raw = readFileSync(this.cacheFilePath, 'utf8')
+      const parsed = JSON.parse(raw) as unknown
+      if (!parsed || typeof parsed !== 'object') {
+        this.store = { version: CACHE_VERSION, scopes: {} }
+        return
+      }
+
+      const payload = parsed as Record<string, unknown>
+      const scopesRaw = payload.scopes
+      if (!scopesRaw || typeof scopesRaw !== 'object') {
+        this.store = { version: CACHE_VERSION, scopes: {} }
+        return
+      }
+
+      const scopes: Record<string, SessionStatsScopeMap> = {}
+      for (const [scopeKey, scopeValue] of Object.entries(scopesRaw as Record<string, unknown>)) {
+        if (!scopeValue || typeof scopeValue !== 'object') continue
+        const normalizedScope: SessionStatsScopeMap = {}
+        for (const [sessionId, entryRaw] of Object.entries(scopeValue as Record<string, unknown>)) {
+          const entry = normalizeEntry(entryRaw)
+          if (!entry) continue
+          normalizedScope[sessionId] = entry
+        }
+        if (Object.keys(normalizedScope).length > 0) {
+          scopes[scopeKey] = normalizedScope
+        }
+      }
+
+      this.store = {
+        version: CACHE_VERSION,
+        scopes
+      }
+    } catch (error) {
+      console.error('SessionStatsCacheService: 载入缓存失败', error)
+      this.store = { version: CACHE_VERSION, scopes: {} }
+    }
+  }
+
+  get(scopeKey: string, sessionId: string): SessionStatsCacheEntry | undefined {
+    if (!scopeKey || !sessionId) return undefined
+    const scope = this.store.scopes[scopeKey]
+    if (!scope) return undefined
+    const entry = normalizeEntry(scope[sessionId])
+    if (!entry) {
+      delete scope[sessionId]
+      if (Object.keys(scope).length === 0) {
+        delete this.store.scopes[scopeKey]
+      }
+      this.persist()
+      return undefined
+    }
+    return entry
+  }
+
+  set(scopeKey: string, sessionId: string, entry: SessionStatsCacheEntry): void {
+    if (!scopeKey || !sessionId) return
+    const normalized = normalizeEntry(entry)
+    if (!normalized) return
+
+    if (!this.store.scopes[scopeKey]) {
+      this.store.scopes[scopeKey] = {}
+    }
+    this.store.scopes[scopeKey][sessionId] = normalized
+
+    this.trimScope(scopeKey)
+    this.trimScopes()
+    this.persist()
+  }
+
+  delete(scopeKey: string, sessionId: string): void {
+    if (!scopeKey || !sessionId) return
+    const scope = this.store.scopes[scopeKey]
+    if (!scope) return
+    if (!(sessionId in scope)) return
+
+    delete scope[sessionId]
+    if (Object.keys(scope).length === 0) {
+      delete this.store.scopes[scopeKey]
+    }
+    this.persist()
+  }
+
+  clearScope(scopeKey: string): void {
+    if (!scopeKey) return
+    if (!this.store.scopes[scopeKey]) return
+    delete this.store.scopes[scopeKey]
+    this.persist()
+  }
+
+  clearAll(): void {
+    this.store = { version: CACHE_VERSION, scopes: {} }
+    try {
+      rmSync(this.cacheFilePath, { force: true })
+    } catch (error) {
+      console.error('SessionStatsCacheService: 清理缓存失败', error)
+    }
+  }
+
+  private trimScope(scopeKey: string): void {
+    const scope = this.store.scopes[scopeKey]
+    if (!scope) return
+    const entries = Object.entries(scope)
+    if (entries.length <= MAX_SESSION_ENTRIES_PER_SCOPE) return
+
+    entries.sort((a, b) => b[1].updatedAt - a[1].updatedAt)
+    const trimmed: SessionStatsScopeMap = {}
+    for (const [sessionId, entry] of entries.slice(0, MAX_SESSION_ENTRIES_PER_SCOPE)) {
+      trimmed[sessionId] = entry
+    }
+    this.store.scopes[scopeKey] = trimmed
+  }
+
+  private trimScopes(): void {
+    const scopeEntries = Object.entries(this.store.scopes)
+    if (scopeEntries.length <= MAX_SCOPE_ENTRIES) return
+
+    scopeEntries.sort((a, b) => {
+      const aUpdatedAt = Math.max(...Object.values(a[1]).map((entry) => entry.updatedAt), 0)
+      const bUpdatedAt = Math.max(...Object.values(b[1]).map((entry) => entry.updatedAt), 0)
+      return bUpdatedAt - aUpdatedAt
+    })
+
+    const trimmedScopes: Record<string, SessionStatsScopeMap> = {}
+    for (const [scopeKey, scopeMap] of scopeEntries.slice(0, MAX_SCOPE_ENTRIES)) {
+      trimmedScopes[scopeKey] = scopeMap
+    }
+    this.store.scopes = trimmedScopes
+  }
+
+  private persist(): void {
+    try {
+      writeFileSync(this.cacheFilePath, JSON.stringify(this.store), 'utf8')
+    } catch (error) {
+      console.error('SessionStatsCacheService: 保存缓存失败', error)
+    }
+  }
+}
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
    "postinstall": "electron-builder install-app-deps",
    "rebuild": "electron-rebuild",
    "dev": "vite",
+    "typecheck": "tsc --noEmit",
    "build": "tsc && vite build && electron-builder",
    "preview": "vite preview",
    "electron:dev": "vite --mode electron",
--- a/src/components/GlobalSessionMonitor.tsx
+++ b/src/components/GlobalSessionMonitor.tsx
@@ -198,11 +198,12 @@ export function GlobalSessionMonitor() {
                        // 尝试丰富或获取联系人详情
                        const contact = await window.electronAPI.chat.getContact(newSession.username)
                        if (contact) {
-                            if (contact.remark || contact.nickname) {
-                                title = contact.remark || contact.nickname
+                            if (contact.remark || contact.nickName) {
+                                title = contact.remark || contact.nickName
                            }
-                            if (contact.avatarUrl) {
-                                avatarUrl = contact.avatarUrl
+                            const avatarResult = await window.electronAPI.chat.getContactAvatar(newSession.username)
+                            if (avatarResult?.avatarUrl) {
+                                avatarUrl = avatarResult.avatarUrl
                            }
                        } else {
                            // 如果不在缓存/数据库中
@@ -222,8 +223,11 @@ export function GlobalSessionMonitor() {
                            if (title === newSession.username || title.startsWith('wxid_')) {
                                const retried = await window.electronAPI.chat.getContact(newSession.username)
                                if (retried) {
-                                    title = retried.remark || retried.nickname || title
-                                    avatarUrl = retried.avatarUrl || avatarUrl
+                                    title = retried.remark || retried.nickName || title
+                                    const retriedAvatar = await window.electronAPI.chat.getContactAvatar(newSession.username)
+                                    if (retriedAvatar?.avatarUrl) {
+                                        avatarUrl = retriedAvatar.avatarUrl
+                                    }
                                }
                            }
                        }
--- a/src/pages/AnnualReportPage.tsx
+++ b/src/pages/AnnualReportPage.tsx
@@ -23,10 +23,11 @@ function AnnualReportPage() {
    setLoadError(null)
    try {
      const result = await window.electronAPI.annualReport.getAvailableYears()
-      if (result.success && result.data && result.data.length > 0) {
-        setAvailableYears(result.data)
-        setSelectedYear((prev) => prev ?? result.data[0])
-        setSelectedPairYear((prev) => prev ?? result.data[0])
+      const years = result.data
+      if (result.success && Array.isArray(years) && years.length > 0) {
+        setAvailableYears(years)
+        setSelectedYear((prev) => prev ?? years[0])
+        setSelectedPairYear((prev) => prev ?? years[0])
      } else if (!result.success) {
        setLoadError(result.error || '加载年度数据失败')
      }
--- a/src/pages/ChatPage.scss
+++ b/src/pages/ChatPage.scss
@@ -2727,6 +2727,13 @@
        opacity: 0.7;
      }
    }
+
+    .detail-stats-meta {
+      margin-top: -6px;
+      margin-bottom: 10px;
+      font-size: 12px;
+      color: var(--text-tertiary);
+    }
  }

  .detail-item {
@@ -2764,6 +2771,26 @@
      }
    }

+    .detail-inline-btn {
+      border: none;
+      background: var(--bg-secondary);
+      color: var(--primary);
+      border-radius: 6px;
+      padding: 4px 8px;
+      font-size: 12px;
+      line-height: 1;
+      cursor: pointer;
+
+      &:disabled {
+        cursor: not-allowed;
+        opacity: 0.7;
+      }
+
+      &:hover:not(:disabled) {
+        background: var(--bg-hover);
+      }
+    }
+
    .copy-btn {
      display: flex;
      align-items: center;
@@ -2872,6 +2899,26 @@
    }
  }

+  .group-members-status {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    padding: 6px 16px;
+    font-size: 12px;
+    color: var(--text-secondary);
+    border-bottom: 1px solid var(--border-color);
+    background: var(--bg-secondary);
+
+    .spin {
+      animation: spin 1s linear infinite;
+    }
+
+    &.warning {
+      color: #b45309;
+      background: color-mix(in srgb, #f59e0b 10%, transparent);
+    }
+  }
+
  .group-members-list {
    flex: 1;
    min-height: 0;
--- a/src/pages/ChatPage.tsx
+++ b/src/pages/ChatPage.tsx
@@ -152,6 +152,7 @@ const CHAT_SESSION_LIST_CACHE_TTL_MS = 24 * 60 * 60 * 1000
 const CHAT_SESSION_PREVIEW_CACHE_TTL_MS = 24 * 60 * 60 * 1000
 const CHAT_SESSION_PREVIEW_LIMIT_PER_SESSION = 30
 const CHAT_SESSION_PREVIEW_MAX_SESSIONS = 18
+const GROUP_MEMBERS_PANEL_CACHE_TTL_MS = 10 * 60 * 1000

 function buildChatSessionListCacheKey(scope: string): string {
  return `weflow.chat.sessions.v1::${scope || 'default'}`
@@ -186,6 +187,17 @@ function formatYmdDateFromSeconds(timestamp?: number): string {
  return `${y}-${m}-${day}`
 }

+function formatYmdHmDateTime(timestamp?: number): string {
+  if (!timestamp || !Number.isFinite(timestamp)) return '—'
+  const d = new Date(timestamp)
+  const y = d.getFullYear()
+  const m = `${d.getMonth() + 1}`.padStart(2, '0')
+  const day = `${d.getDate()}`.padStart(2, '0')
+  const h = `${d.getHours()}`.padStart(2, '0')
+  const min = `${d.getMinutes()}`.padStart(2, '0')
+  return `${y}-${m}-${day} ${h}:${min}`
+}
+
 interface ChatPageProps {
  // 保留接口以备将来扩展
 }
@@ -208,11 +220,36 @@ interface SessionDetail {
  groupMyMessages?: number
  groupActiveSpeakers?: number
  groupMutualFriends?: number
+  relationStatsLoaded?: boolean
+  statsUpdatedAt?: number
+  statsStale?: boolean
  firstMessageTime?: number
  latestMessageTime?: number
  messageTables: { dbName: string; tableName: string; count: number }[]
 }

+interface SessionExportMetric {
+  totalMessages: number
+  voiceMessages: number
+  imageMessages: number
+  videoMessages: number
+  emojiMessages: number
+  firstTimestamp?: number
+  lastTimestamp?: number
+  privateMutualGroups?: number
+  groupMemberCount?: number
+  groupMyMessages?: number
+  groupActiveSpeakers?: number
+  groupMutualFriends?: number
+}
+
+interface SessionExportCacheMeta {
+  updatedAt: number
+  stale: boolean
+  includeRelations: boolean
+  source: 'memory' | 'disk' | 'fresh'
+}
+
 interface GroupPanelMember {
  username: string
  displayName: string
@@ -241,6 +278,11 @@ interface SessionPreviewCachePayload {
  entries: Record<string, SessionPreviewCacheEntry>
 }

+interface GroupMembersPanelCacheEntry {
+  updatedAt: number
+  members: GroupPanelMember[]
+}
+
 // 全局头像加载队列管理器已移至 src/utils/AvatarLoadQueue.ts
 // 全局头像加载队列管理器已移至 src/utils/AvatarLoadQueue.ts
 import { avatarLoadQueue } from '../utils/AvatarLoadQueue'
@@ -395,9 +437,13 @@ function ChatPage(_props: ChatPageProps) {
  const [sessionDetail, setSessionDetail] = useState<SessionDetail | null>(null)
  const [isLoadingDetail, setIsLoadingDetail] = useState(false)
  const [isLoadingDetailExtra, setIsLoadingDetailExtra] = useState(false)
+  const [isRefreshingDetailStats, setIsRefreshingDetailStats] = useState(false)
+  const [isLoadingRelationStats, setIsLoadingRelationStats] = useState(false)
  const [groupPanelMembers, setGroupPanelMembers] = useState<GroupPanelMember[]>([])
  const [isLoadingGroupMembers, setIsLoadingGroupMembers] = useState(false)
  const [groupMembersError, setGroupMembersError] = useState<string | null>(null)
+  const [groupMembersLoadingHint, setGroupMembersLoadingHint] = useState('')
+  const [isRefreshingGroupMembers, setIsRefreshingGroupMembers] = useState(false)
  const [groupMemberSearchKeyword, setGroupMemberSearchKeyword] = useState('')
  const [copiedField, setCopiedField] = useState<string | null>(null)
  const [highlightedMessageKeys, setHighlightedMessageKeys] = useState<string[]>([])
@@ -478,6 +524,8 @@ function ChatPage(_props: ChatPageProps) {
  const lastPreloadSessionRef = useRef<string | null>(null)
  const detailRequestSeqRef = useRef(0)
  const groupMembersRequestSeqRef = useRef(0)
+  const groupMembersPanelCacheRef = useRef<Map<string, GroupMembersPanelCacheEntry>>(new Map())
+  const hasInitializedGroupMembersRef = useRef(false)
  const chatCacheScopeRef = useRef('default')
  const previewCacheRef = useRef<Record<string, SessionPreviewCacheEntry>>({})
  const previewPersistTimerRef = useRef<number | null>(null)
@@ -722,6 +770,40 @@ function ChatPage(_props: ChatPageProps) {
    }
  }, [])

+  const applySessionDetailStats = useCallback((
+    sessionId: string,
+    metric: SessionExportMetric,
+    cacheMeta?: SessionExportCacheMeta,
+    relationLoadedOverride?: boolean
+  ) => {
+    setSessionDetail((prev) => {
+      if (!prev || prev.wxid !== sessionId) return prev
+      const relationLoaded = relationLoadedOverride ?? Boolean(prev.relationStatsLoaded)
+      return {
+        ...prev,
+        messageCount: Number.isFinite(metric.totalMessages) ? metric.totalMessages : prev.messageCount,
+        voiceMessages: Number.isFinite(metric.voiceMessages) ? metric.voiceMessages : prev.voiceMessages,
+        imageMessages: Number.isFinite(metric.imageMessages) ? metric.imageMessages : prev.imageMessages,
+        videoMessages: Number.isFinite(metric.videoMessages) ? metric.videoMessages : prev.videoMessages,
+        emojiMessages: Number.isFinite(metric.emojiMessages) ? metric.emojiMessages : prev.emojiMessages,
+        groupMemberCount: Number.isFinite(metric.groupMemberCount) ? metric.groupMemberCount : prev.groupMemberCount,
+        groupMyMessages: Number.isFinite(metric.groupMyMessages) ? metric.groupMyMessages : prev.groupMyMessages,
+        groupActiveSpeakers: Number.isFinite(metric.groupActiveSpeakers) ? metric.groupActiveSpeakers : prev.groupActiveSpeakers,
+        privateMutualGroups: relationLoaded && Number.isFinite(metric.privateMutualGroups)
+          ? metric.privateMutualGroups
+          : prev.privateMutualGroups,
+        groupMutualFriends: relationLoaded && Number.isFinite(metric.groupMutualFriends)
+          ? metric.groupMutualFriends
+          : prev.groupMutualFriends,
+        relationStatsLoaded: relationLoaded,
+        statsUpdatedAt: cacheMeta?.updatedAt ?? prev.statsUpdatedAt,
+        statsStale: typeof cacheMeta?.stale === 'boolean' ? cacheMeta.stale : prev.statsStale,
+        firstMessageTime: Number.isFinite(metric.firstTimestamp) ? metric.firstTimestamp : prev.firstMessageTime,
+        latestMessageTime: Number.isFinite(metric.lastTimestamp) ? metric.lastTimestamp : prev.latestMessageTime
+      }
+    })
+  }, [])
+
  // 加载会话详情
  const loadSessionDetail = useCallback(async (sessionId: string) => {
    const normalizedSessionId = String(sessionId || '').trim()
@@ -733,6 +815,8 @@ function ChatPage(_props: ChatPageProps) {
      ? Math.floor(mappedSession.messageCountHint)
      : undefined

+    setIsRefreshingDetailStats(false)
+    setIsLoadingRelationStats(false)
    setSessionDetail((prev) => {
      const sameSession = prev?.wxid === normalizedSessionId
      return {
@@ -752,6 +836,9 @@ function ChatPage(_props: ChatPageProps) {
        groupMyMessages: sameSession ? prev?.groupMyMessages : undefined,
        groupActiveSpeakers: sameSession ? prev?.groupActiveSpeakers : undefined,
        groupMutualFriends: sameSession ? prev?.groupMutualFriends : undefined,
+        relationStatsLoaded: sameSession ? prev?.relationStatsLoaded : false,
+        statsUpdatedAt: sameSession ? prev?.statsUpdatedAt : undefined,
+        statsStale: sameSession ? prev?.statsStale : undefined,
        firstMessageTime: sameSession ? prev?.firstMessageTime : undefined,
        latestMessageTime: sameSession ? prev?.latestMessageTime : undefined,
        messageTables: sameSession && Array.isArray(prev?.messageTables) ? prev.messageTables : []
@@ -781,6 +868,9 @@ function ChatPage(_props: ChatPageProps) {
          groupMyMessages: prev?.groupMyMessages,
          groupActiveSpeakers: prev?.groupActiveSpeakers,
          groupMutualFriends: prev?.groupMutualFriends,
+          relationStatsLoaded: prev?.relationStatsLoaded,
+          statsUpdatedAt: prev?.statsUpdatedAt,
+          statsStale: prev?.statsStale,
          firstMessageTime: prev?.firstMessageTime,
          latestMessageTime: prev?.latestMessageTime,
          messageTables: Array.isArray(prev?.messageTables) ? (prev?.messageTables || []) : []
@@ -797,47 +887,82 @@ function ChatPage(_props: ChatPageProps) {
    try {
      const [extraResultSettled, statsResultSettled] = await Promise.allSettled([
        window.electronAPI.chat.getSessionDetailExtra(normalizedSessionId),
-        window.electronAPI.chat.getExportSessionStats([normalizedSessionId])
+        window.electronAPI.chat.getExportSessionStats(
+          [normalizedSessionId],
+          { includeRelations: false, allowStaleCache: true }
+        )
      ])

      if (requestSeq !== detailRequestSeqRef.current) return

+      if (extraResultSettled.status === 'fulfilled' && extraResultSettled.value.success) {
+        const detail = extraResultSettled.value.detail
+        if (detail) {
          setSessionDetail((prev) => {
            if (!prev || prev.wxid !== normalizedSessionId) return prev
-
-        let next = { ...prev }
-        if (extraResultSettled.status === 'fulfilled' && extraResultSettled.value.success && extraResultSettled.value.detail) {
-          next = {
-            ...next,
-            firstMessageTime: extraResultSettled.value.detail.firstMessageTime,
-            latestMessageTime: extraResultSettled.value.detail.latestMessageTime,
-            messageTables: Array.isArray(extraResultSettled.value.detail.messageTables) ? extraResultSettled.value.detail.messageTables : []
+            return {
+              ...prev,
+              firstMessageTime: detail.firstMessageTime,
+              latestMessageTime: detail.latestMessageTime,
+              messageTables: Array.isArray(detail.messageTables) ? detail.messageTables : []
            }
-        }
-
-        if (statsResultSettled.status === 'fulfilled' && statsResultSettled.value.success && statsResultSettled.value.data) {
-          const metric = statsResultSettled.value.data[normalizedSessionId]
-          if (metric) {
-            next = {
-              ...next,
-              messageCount: Number.isFinite(metric.totalMessages) ? metric.totalMessages : next.messageCount,
-              voiceMessages: metric.voiceMessages,
-              imageMessages: metric.imageMessages,
-              videoMessages: metric.videoMessages,
-              emojiMessages: metric.emojiMessages,
-              privateMutualGroups: metric.privateMutualGroups,
-              groupMemberCount: metric.groupMemberCount,
-              groupMyMessages: metric.groupMyMessages,
-              groupActiveSpeakers: metric.groupActiveSpeakers,
-              groupMutualFriends: metric.groupMutualFriends,
-              firstMessageTime: Number.isFinite(metric.firstTimestamp) ? metric.firstTimestamp : next.firstMessageTime,
-              latestMessageTime: Number.isFinite(metric.lastTimestamp) ? metric.lastTimestamp : next.latestMessageTime
-            }
-          }
-        }
-
-        return next
          })
+        }
+      }
+
+      let refreshIncludeRelations = false
+      let shouldRefreshStats = false
+      if (statsResultSettled.status === 'fulfilled' && statsResultSettled.value.success) {
+        const metric = statsResultSettled.value.data?.[normalizedSessionId] as SessionExportMetric | undefined
+        const cacheMeta = statsResultSettled.value.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+        refreshIncludeRelations = Boolean(cacheMeta?.includeRelations)
+        if (metric) {
+          applySessionDetailStats(normalizedSessionId, metric, cacheMeta, refreshIncludeRelations)
+        } else if (cacheMeta) {
+          setSessionDetail((prev) => {
+            if (!prev || prev.wxid !== normalizedSessionId) return prev
+            return {
+              ...prev,
+              relationStatsLoaded: refreshIncludeRelations || prev.relationStatsLoaded,
+              statsUpdatedAt: cacheMeta.updatedAt,
+              statsStale: cacheMeta.stale
+            }
+          })
+        }
+        shouldRefreshStats = Array.isArray(statsResultSettled.value.needsRefresh) &&
+          statsResultSettled.value.needsRefresh.includes(normalizedSessionId)
+      }
+
+      if (shouldRefreshStats) {
+        setIsRefreshingDetailStats(true)
+        void (async () => {
+          try {
+            const freshResult = await window.electronAPI.chat.getExportSessionStats(
+              [normalizedSessionId],
+              { includeRelations: refreshIncludeRelations, forceRefresh: true }
+            )
+            if (requestSeq !== detailRequestSeqRef.current) return
+            if (freshResult.success && freshResult.data) {
+              const metric = freshResult.data[normalizedSessionId] as SessionExportMetric | undefined
+              const cacheMeta = freshResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+              if (metric) {
+                applySessionDetailStats(
+                  normalizedSessionId,
+                  metric,
+                  cacheMeta,
+                  refreshIncludeRelations ? true : undefined
+                )
+              }
+            }
+          } catch (error) {
+            console.error('刷新会话统计失败:', error)
+          } finally {
+            if (requestSeq === detailRequestSeqRef.current) {
+              setIsRefreshingDetailStats(false)
+            }
+          }
+        })()
+      }
    } catch (e) {
      console.error('加载会话详情补充统计失败:', e)
    } finally {
@@ -845,51 +970,120 @@ function ChatPage(_props: ChatPageProps) {
        setIsLoadingDetailExtra(false)
      }
    }
-  }, [])
+  }, [applySessionDetailStats])
+
+  const loadRelationStats = useCallback(async () => {
+    const normalizedSessionId = String(currentSessionId || '').trim()
+    if (!normalizedSessionId || isLoadingRelationStats) return
+
+    const requestSeq = detailRequestSeqRef.current
+    setIsLoadingRelationStats(true)
+    try {
+      const relationResult = await window.electronAPI.chat.getExportSessionStats(
+        [normalizedSessionId],
+        { includeRelations: true, allowStaleCache: true }
+      )
+      if (requestSeq !== detailRequestSeqRef.current) return
+
+      const metric = relationResult.success && relationResult.data
+        ? relationResult.data[normalizedSessionId] as SessionExportMetric | undefined
+        : undefined
+      const cacheMeta = relationResult.success
+        ? relationResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+        : undefined
+      if (metric) {
+        applySessionDetailStats(normalizedSessionId, metric, cacheMeta, true)
+      }
+
+      const needRefresh = relationResult.success &&
+        Array.isArray(relationResult.needsRefresh) &&
+        relationResult.needsRefresh.includes(normalizedSessionId)
+
+      if (needRefresh) {
+        setIsRefreshingDetailStats(true)
+        void (async () => {
+          try {
+            const freshResult = await window.electronAPI.chat.getExportSessionStats(
+              [normalizedSessionId],
+              { includeRelations: true, forceRefresh: true }
+            )
+            if (requestSeq !== detailRequestSeqRef.current) return
+            if (freshResult.success && freshResult.data) {
+              const freshMetric = freshResult.data[normalizedSessionId] as SessionExportMetric | undefined
+              const freshMeta = freshResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+              if (freshMetric) {
+                applySessionDetailStats(normalizedSessionId, freshMetric, freshMeta, true)
+              }
+            }
+          } catch (error) {
+            console.error('刷新会话关系统计失败:', error)
+          } finally {
+            if (requestSeq === detailRequestSeqRef.current) {
+              setIsRefreshingDetailStats(false)
+            }
+          }
+        })()
+      }
+    } catch (error) {
+      console.error('加载会话关系统计失败:', error)
+    } finally {
+      if (requestSeq === detailRequestSeqRef.current) {
+        setIsLoadingRelationStats(false)
+      }
+    }
+  }, [applySessionDetailStats, currentSessionId, isLoadingRelationStats])

  const loadGroupMembersPanel = useCallback(async (chatroomId: string) => {
    if (!chatroomId || !isGroupChatSession(chatroomId)) return

    const requestSeq = ++groupMembersRequestSeqRef.current
-    setIsLoadingGroupMembers(true)
+    const now = Date.now()
+    const cached = groupMembersPanelCacheRef.current.get(chatroomId)
+    const cacheFresh = Boolean(cached && now - cached.updatedAt < GROUP_MEMBERS_PANEL_CACHE_TTL_MS)
+    const hasCachedMembers = Boolean(cached && cached.members.length > 0)
+
+    if (cacheFresh && cached) {
+      setGroupPanelMembers(cached.members)
      setGroupMembersError(null)
-
-    try {
-      const [membersResult, rankingResult, contactsResult] = await Promise.all([
-        window.electronAPI.groupAnalytics.getGroupMembers(chatroomId),
-        window.electronAPI.groupAnalytics.getGroupMessageRanking(chatroomId, 20000),
-        window.electronAPI.chat.getContacts()
-      ])
-      if (requestSeq !== groupMembersRequestSeqRef.current) return
-
-      if (!membersResult.success || !Array.isArray(membersResult.data)) {
-        setGroupPanelMembers([])
-        setGroupMembersError(membersResult.error || '加载群成员失败')
+      setGroupMembersLoadingHint('')
+      setIsRefreshingGroupMembers(false)
+      setIsLoadingGroupMembers(false)
+      hasInitializedGroupMembersRef.current = true
      return
    }

-      const messageCountMap = new Map<string, number>()
-      if (rankingResult.success && Array.isArray(rankingResult.data)) {
-        for (const rank of rankingResult.data) {
-          const username = String(rank.member?.username || '').trim()
-          if (!username) continue
-          const count = Number.isFinite(rank.messageCount) ? Math.max(0, Math.floor(rank.messageCount)) : 0
-          messageCountMap.set(username, count)
-        }
+    setGroupMembersError(null)
+    if (hasCachedMembers && cached) {
+      setGroupPanelMembers(cached.members)
+      setIsRefreshingGroupMembers(true)
+      setGroupMembersLoadingHint('')
+      setIsLoadingGroupMembers(false)
+    } else {
+      setGroupPanelMembers([])
+      setIsRefreshingGroupMembers(false)
+      setIsLoadingGroupMembers(true)
+      setGroupMembersLoadingHint(
+        hasInitializedGroupMembersRef.current
+          ? '加载群成员中...'
+          : '首次加载群成员，正在初始化索引（可能需要几秒）'
+      )
    }

-      const friendSet = new Set<string>()
-      if (contactsResult.success && Array.isArray(contactsResult.contacts)) {
-        for (const contact of contactsResult.contacts) {
-          if (contact.type !== 'friend') continue
-          const username = String(contact.username || '').trim()
-          if (!username) continue
-          friendSet.add(username)
+    try {
+      const membersResult = await window.electronAPI.groupAnalytics.getGroupMembersPanelData(chatroomId)
+      if (requestSeq !== groupMembersRequestSeqRef.current) return
+
+      if (!membersResult.success || !Array.isArray(membersResult.data)) {
+        if (!hasCachedMembers) {
+          setGroupPanelMembers([])
        }
+        setGroupMembersError(membersResult.error || (hasCachedMembers ? '刷新群成员失败，已显示缓存数据' : '加载群成员失败'))
+        return
      }

-      const members: GroupPanelMember[] = membersResult.data
-        .map((member) => {
+      const membersPayload = membersResult.data as GroupPanelMember[]
+      const members: GroupPanelMember[] = membersPayload
+        .map((member: GroupPanelMember): GroupPanelMember | null => {
          const username = String(member.username || '').trim()
          if (!username) return null
          const preferredName = String(
@@ -909,12 +1103,12 @@ function ChatPage(_props: ChatPageProps) {
            remark: member.remark,
            groupNickname: member.groupNickname,
            isOwner: Boolean(member.isOwner),
-            isFriend: friendSet.has(username),
-            messageCount: messageCountMap.get(username) || 0
+            isFriend: Boolean(member.isFriend),
+            messageCount: Number.isFinite(member.messageCount) ? Math.max(0, Math.floor(member.messageCount)) : 0
          }
        })
-        .filter((member): member is GroupPanelMember => Boolean(member))
-        .sort((a, b) => {
+        .filter((member: GroupPanelMember | null): member is GroupPanelMember => Boolean(member))
+        .sort((a: GroupPanelMember, b: GroupPanelMember) => {
          const ownerDiff = Number(Boolean(b.isOwner)) - Number(Boolean(a.isOwner))
          if (ownerDiff !== 0) return ownerDiff

@@ -926,19 +1120,33 @@ function ChatPage(_props: ChatPageProps) {
        })

      setGroupPanelMembers(members)
-      if (!rankingResult.success) {
-        setGroupMembersError(rankingResult.error || '群成员发言统计加载失败')
+      setGroupMembersError(null)
+      groupMembersPanelCacheRef.current.set(chatroomId, {
+        updatedAt: Date.now(),
+        members
+      })
+      if (groupMembersPanelCacheRef.current.size > 80) {
+        const oldestEntry = Array.from(groupMembersPanelCacheRef.current.entries())
+          .sort((a, b) => a[1].updatedAt - b[1].updatedAt)[0]
+        if (oldestEntry) {
+          groupMembersPanelCacheRef.current.delete(oldestEntry[0])
        }
+      }
+      hasInitializedGroupMembersRef.current = true
    } catch (e) {
      if (requestSeq !== groupMembersRequestSeqRef.current) return
+      if (!hasCachedMembers) {
        setGroupPanelMembers([])
-      setGroupMembersError(String(e))
+      }
+      setGroupMembersError(hasCachedMembers ? '刷新群成员失败，已显示缓存数据' : String(e))
    } finally {
      if (requestSeq === groupMembersRequestSeqRef.current) {
        setIsLoadingGroupMembers(false)
+        setIsRefreshingGroupMembers(false)
+        setGroupMembersLoadingHint('')
      }
    }
-  }, [])
+  }, [isGroupChatSession])

  const toggleGroupMembersPanel = useCallback(() => {
    if (!currentSessionId || !isGroupChatSession(currentSessionId)) return
@@ -1024,12 +1232,18 @@ function ChatPage(_props: ChatPageProps) {
    pendingSessionLoadRef.current = null
    setIsSessionSwitching(false)
    setSessionDetail(null)
+    setIsRefreshingDetailStats(false)
+    setIsLoadingRelationStats(false)
    setShowDetailPanel(false)
    setShowGroupMembersPanel(false)
    setGroupPanelMembers([])
    setGroupMembersError(null)
+    setGroupMembersLoadingHint('')
+    setIsRefreshingGroupMembers(false)
    setGroupMemberSearchKeyword('')
    groupMembersRequestSeqRef.current += 1
+    groupMembersPanelCacheRef.current.clear()
+    hasInitializedGroupMembersRef.current = false
    setIsLoadingGroupMembers(false)
    setCurrentSession(null)
    setSessions([])
@@ -1694,9 +1908,13 @@ function ChatPage(_props: ChatPageProps) {
    setShowGroupMembersPanel(false)
    setGroupMemberSearchKeyword('')
    setGroupMembersError(null)
+    setGroupMembersLoadingHint('')
+    setIsRefreshingGroupMembers(false)
    groupMembersRequestSeqRef.current += 1
    setIsLoadingGroupMembers(false)
    setSessionDetail(null)
+    setIsRefreshingDetailStats(false)
+    setIsLoadingRelationStats(false)
  }

  // 搜索过滤
@@ -3146,10 +3364,22 @@ function ChatPage(_props: ChatPageProps) {
                    </div>
                  </div>

+                  {isRefreshingGroupMembers && (
+                    <div className="group-members-status" role="status" aria-live="polite">
+                      <Loader2 size={14} className="spin" />
+                      <span>正在更新群成员数据...</span>
+                    </div>
+                  )}
+                  {groupMembersError && groupPanelMembers.length > 0 && (
+                    <div className="group-members-status warning" role="status" aria-live="polite">
+                      <span>{groupMembersError}</span>
+                    </div>
+                  )}
+
                  {isLoadingGroupMembers ? (
                    <div className="detail-loading">
                      <Loader2 size={20} className="spin" />
-                      <span>加载群成员中...</span>
+                      <span>{groupMembersLoadingHint || '加载群成员中...'}</span>
                    </div>
                  ) : groupMembersError && groupPanelMembers.length === 0 ? (
                    <div className="detail-empty">{groupMembersError}</div>
@@ -3256,6 +3486,13 @@ function ChatPage(_props: ChatPageProps) {
                          <MessageSquare size={14} />
                          <span>消息统计（导出口径）</span>
                        </div>
+                        <div className="detail-stats-meta">
+                          {isRefreshingDetailStats
+                            ? '统计刷新中...'
+                            : sessionDetail.statsUpdatedAt
+                              ? `${sessionDetail.statsStale ? '缓存于' : '更新于'} ${formatYmdHmDateTime(sessionDetail.statsUpdatedAt)}${sessionDetail.statsStale ? '（将后台刷新）' : ''}`
+                              : (isLoadingDetailExtra ? '统计加载中...' : '暂无统计缓存')}
+                        </div>
                        <div className="detail-item">
                          <span className="label">消息总数</span>
                          <span className="value highlight">
@@ -3325,9 +3562,19 @@ function ChatPage(_props: ChatPageProps) {
                            <div className="detail-item">
                              <span className="label">群共同好友数</span>
                              <span className="value">
-                                {Number.isFinite(sessionDetail.groupMutualFriends)
+                                {sessionDetail.relationStatsLoaded
+                                  ? (Number.isFinite(sessionDetail.groupMutualFriends)
                                    ? (sessionDetail.groupMutualFriends as number).toLocaleString()
-                                  : (isLoadingDetailExtra ? '统计中...' : '—')}
+                                    : '—')
+                                  : (
+                                    <button
+                                      className="detail-inline-btn"
+                                      onClick={() => { void loadRelationStats() }}
+                                      disabled={isLoadingRelationStats || isLoadingDetailExtra}
+                                    >
+                                      {isLoadingRelationStats ? '加载中...' : '点击加载'}
+                                    </button>
+                                  )}
                              </span>
                            </div>
                          </>
@@ -3335,9 +3582,19 @@ function ChatPage(_props: ChatPageProps) {
                          <div className="detail-item">
                            <span className="label">共同群聊数</span>
                            <span className="value">
-                              {Number.isFinite(sessionDetail.privateMutualGroups)
+                              {sessionDetail.relationStatsLoaded
+                                ? (Number.isFinite(sessionDetail.privateMutualGroups)
                                  ? (sessionDetail.privateMutualGroups as number).toLocaleString()
-                                : (isLoadingDetailExtra ? '统计中...' : '—')}
+                                  : '—')
+                                : (
+                                  <button
+                                    className="detail-inline-btn"
+                                    onClick={() => { void loadRelationStats() }}
+                                    disabled={isLoadingRelationStats || isLoadingDetailExtra}
+                                  >
+                                    {isLoadingRelationStats ? '加载中...' : '点击加载'}
+                                  </button>
+                                )}
                            </span>
                          </div>
                        )}
--- a/src/pages/DualReportWindow.tsx
+++ b/src/pages/DualReportWindow.tsx
@@ -107,7 +107,16 @@ function DualReportWindow() {
      setLoadingStage('完成')

      if (result.success && result.data) {
-        setReportData(result.data)
+        const normalizedResponse = result.data.response
+          ? {
+            ...result.data.response,
+            slowest: result.data.response.slowest ?? result.data.response.avg
+          }
+          : undefined
+        setReportData({
+          ...result.data,
+          response: normalizedResponse
+        })
        setIsLoading(false)
      } else {
        setError(result.error || '生成报告失败')
--- a/src/pages/ExportPage.scss
+++ b/src/pages/ExportPage.scss
@@ -1411,6 +1411,13 @@
      text-transform: uppercase;
      letter-spacing: 0.4px;
    }
+
+    .detail-stats-meta {
+      margin-top: -4px;
+      margin-bottom: 10px;
+      font-size: 12px;
+      color: var(--text-tertiary);
+    }
  }

  .detail-item {
@@ -1443,6 +1450,26 @@
      }
    }

+    .detail-inline-btn {
+      border: none;
+      background: var(--bg-secondary);
+      color: var(--primary);
+      border-radius: 6px;
+      padding: 4px 8px;
+      font-size: 12px;
+      line-height: 1;
+      cursor: pointer;
+
+      &:disabled {
+        cursor: not-allowed;
+        opacity: 0.7;
+      }
+
+      &:hover:not(:disabled) {
+        background: var(--bg-hover);
+      }
+    }
+
    .copy-btn {
      display: flex;
      align-items: center;
--- a/src/pages/ExportPage.tsx
+++ b/src/pages/ExportPage.tsx
@@ -378,6 +378,17 @@ const formatYmdDateFromSeconds = (timestamp?: number): string => {
  return `${y}-${m}-${day}`
 }

+const formatYmdHmDateTime = (timestamp?: number): string => {
+  if (!timestamp || !Number.isFinite(timestamp)) return '—'
+  const d = new Date(timestamp)
+  const y = d.getFullYear()
+  const m = `${d.getMonth() + 1}`.padStart(2, '0')
+  const day = `${d.getDate()}`.padStart(2, '0')
+  const h = `${d.getHours()}`.padStart(2, '0')
+  const min = `${d.getMinutes()}`.padStart(2, '0')
+  return `${y}-${m}-${day} ${h}:${min}`
+}
+
 const formatRecentExportTime = (timestamp?: number, now = Date.now()): string => {
  if (!timestamp) return ''
  const diff = Math.max(0, now - timestamp)
@@ -496,11 +507,36 @@ interface SessionDetail {
  groupMyMessages?: number
  groupActiveSpeakers?: number
  groupMutualFriends?: number
+  relationStatsLoaded?: boolean
+  statsUpdatedAt?: number
+  statsStale?: boolean
  firstMessageTime?: number
  latestMessageTime?: number
  messageTables: { dbName: string; tableName: string; count: number }[]
 }

+interface SessionExportMetric {
+  totalMessages: number
+  voiceMessages: number
+  imageMessages: number
+  videoMessages: number
+  emojiMessages: number
+  firstTimestamp?: number
+  lastTimestamp?: number
+  privateMutualGroups?: number
+  groupMemberCount?: number
+  groupMyMessages?: number
+  groupActiveSpeakers?: number
+  groupMutualFriends?: number
+}
+
+interface SessionExportCacheMeta {
+  updatedAt: number
+  stale: boolean
+  includeRelations: boolean
+  source: 'memory' | 'disk' | 'fresh'
+}
+
 const withTimeout = async <T,>(promise: Promise<T>, timeoutMs: number): Promise<T | null> => {
  let timer: ReturnType<typeof setTimeout> | null = null
  try {
@@ -772,6 +808,8 @@ function ExportPage() {
  const [sessionDetail, setSessionDetail] = useState<SessionDetail | null>(null)
  const [isLoadingSessionDetail, setIsLoadingSessionDetail] = useState(false)
  const [isLoadingSessionDetailExtra, setIsLoadingSessionDetailExtra] = useState(false)
+  const [isRefreshingSessionDetailStats, setIsRefreshingSessionDetailStats] = useState(false)
+  const [isLoadingSessionRelationStats, setIsLoadingSessionRelationStats] = useState(false)
  const [copiedDetailField, setCopiedDetailField] = useState<string | null>(null)

  const [exportFolder, setExportFolder] = useState('')
@@ -1718,6 +1756,7 @@ function ExportPage() {
          next.exportVoices = payload.contentType === 'voice'
          next.exportVideos = payload.contentType === 'video'
          next.exportEmojis = payload.contentType === 'emoji'
+          next.exportVoiceAsText = false
        }
      }

@@ -1813,6 +1852,7 @@ function ExportPage() {
      if (contentType === 'text') {
        return {
          ...base,
+          contentType,
          exportAvatars: true,
          exportMedia: false,
          exportImages: false,
@@ -1824,11 +1864,13 @@ function ExportPage() {

      return {
        ...base,
+        contentType,
        exportMedia: true,
        exportImages: contentType === 'image',
        exportVoices: contentType === 'voice',
        exportVideos: contentType === 'video',
-        exportEmojis: contentType === 'emoji'
+        exportEmojis: contentType === 'emoji',
+        exportVoiceAsText: false
      }
    }

@@ -2048,6 +2090,8 @@ function ExportPage() {
          }))
        } else {
          const doneAt = Date.now()
+          const successCount = result.successCount ?? 0
+          const failCount = result.failCount ?? 0
          const contentTypes = next.payload.contentType
            ? [next.payload.contentType]
            : inferContentTypesFromOptions(next.payload.options)
@@ -2067,7 +2111,7 @@ function ExportPage() {
                finishedAt: doneAt,
                progress: {
                  ...task.progress,
-                current: result.successCount + result.failCount,
+                  current: successCount + failCount,
                  total: task.progress.total || next.payload.sessionIds.length,
                  phaseLabel: '已停止'
                },
@@ -2112,7 +2156,7 @@ function ExportPage() {
                },
                progress: {
                  ...task.progress,
-                  current: result.successCount + result.failCount,
+                  current: successCount + failCount,
                  total: task.progress.total || next.payload.sessionIds.length,
                  phaseLabel: '已暂停'
                },
@@ -2531,6 +2575,40 @@ function ExportPage() {
    return map
  }, [contactsList])

+  const applySessionDetailStats = useCallback((
+    sessionId: string,
+    metric: SessionExportMetric,
+    cacheMeta?: SessionExportCacheMeta,
+    relationLoadedOverride?: boolean
+  ) => {
+    setSessionDetail((prev) => {
+      if (!prev || prev.wxid !== sessionId) return prev
+      const relationLoaded = relationLoadedOverride ?? Boolean(prev.relationStatsLoaded)
+      return {
+        ...prev,
+        messageCount: Number.isFinite(metric.totalMessages) ? metric.totalMessages : prev.messageCount,
+        voiceMessages: Number.isFinite(metric.voiceMessages) ? metric.voiceMessages : prev.voiceMessages,
+        imageMessages: Number.isFinite(metric.imageMessages) ? metric.imageMessages : prev.imageMessages,
+        videoMessages: Number.isFinite(metric.videoMessages) ? metric.videoMessages : prev.videoMessages,
+        emojiMessages: Number.isFinite(metric.emojiMessages) ? metric.emojiMessages : prev.emojiMessages,
+        groupMemberCount: Number.isFinite(metric.groupMemberCount) ? metric.groupMemberCount : prev.groupMemberCount,
+        groupMyMessages: Number.isFinite(metric.groupMyMessages) ? metric.groupMyMessages : prev.groupMyMessages,
+        groupActiveSpeakers: Number.isFinite(metric.groupActiveSpeakers) ? metric.groupActiveSpeakers : prev.groupActiveSpeakers,
+        privateMutualGroups: relationLoaded && Number.isFinite(metric.privateMutualGroups)
+          ? metric.privateMutualGroups
+          : prev.privateMutualGroups,
+        groupMutualFriends: relationLoaded && Number.isFinite(metric.groupMutualFriends)
+          ? metric.groupMutualFriends
+          : prev.groupMutualFriends,
+        relationStatsLoaded: relationLoaded,
+        statsUpdatedAt: cacheMeta?.updatedAt ?? prev.statsUpdatedAt,
+        statsStale: typeof cacheMeta?.stale === 'boolean' ? cacheMeta.stale : prev.statsStale,
+        firstMessageTime: Number.isFinite(metric.firstTimestamp) ? metric.firstTimestamp : prev.firstMessageTime,
+        latestMessageTime: Number.isFinite(metric.lastTimestamp) ? metric.lastTimestamp : prev.latestMessageTime
+      }
+    })
+  }, [])
+
  const loadSessionDetail = useCallback(async (sessionId: string) => {
    const normalizedSessionId = String(sessionId || '').trim()
    if (!normalizedSessionId) return
@@ -2543,6 +2621,8 @@ function ExportPage() {
      : undefined

    setCopiedDetailField(null)
+    setIsRefreshingSessionDetailStats(false)
+    setIsLoadingSessionRelationStats(false)
    setSessionDetail((prev) => {
      const sameSession = prev?.wxid === normalizedSessionId
      return {
@@ -2562,6 +2642,9 @@ function ExportPage() {
        groupMyMessages: sameSession ? prev?.groupMyMessages : undefined,
        groupActiveSpeakers: sameSession ? prev?.groupActiveSpeakers : undefined,
        groupMutualFriends: sameSession ? prev?.groupMutualFriends : undefined,
+        relationStatsLoaded: sameSession ? prev?.relationStatsLoaded : false,
+        statsUpdatedAt: sameSession ? prev?.statsUpdatedAt : undefined,
+        statsStale: sameSession ? prev?.statsStale : undefined,
        firstMessageTime: sameSession ? prev?.firstMessageTime : undefined,
        latestMessageTime: sameSession ? prev?.latestMessageTime : undefined,
        messageTables: sameSession && Array.isArray(prev?.messageTables) ? prev.messageTables : []
@@ -2591,6 +2674,9 @@ function ExportPage() {
          groupMyMessages: prev?.groupMyMessages,
          groupActiveSpeakers: prev?.groupActiveSpeakers,
          groupMutualFriends: prev?.groupMutualFriends,
+          relationStatsLoaded: prev?.relationStatsLoaded,
+          statsUpdatedAt: prev?.statsUpdatedAt,
+          statsStale: prev?.statsStale,
          firstMessageTime: prev?.firstMessageTime,
          latestMessageTime: prev?.latestMessageTime,
          messageTables: Array.isArray(prev?.messageTables) ? (prev?.messageTables || []) : []
@@ -2607,47 +2693,82 @@ function ExportPage() {
    try {
      const [extraResultSettled, statsResultSettled] = await Promise.allSettled([
        window.electronAPI.chat.getSessionDetailExtra(normalizedSessionId),
-        window.electronAPI.chat.getExportSessionStats([normalizedSessionId])
+        window.electronAPI.chat.getExportSessionStats(
+          [normalizedSessionId],
+          { includeRelations: false, allowStaleCache: true }
+        )
      ])

      if (requestSeq !== detailRequestSeqRef.current) return

+      if (extraResultSettled.status === 'fulfilled' && extraResultSettled.value.success) {
+        const detail = extraResultSettled.value.detail
+        if (detail) {
          setSessionDetail((prev) => {
            if (!prev || prev.wxid !== normalizedSessionId) return prev
-
-        let next = { ...prev }
-        if (extraResultSettled.status === 'fulfilled' && extraResultSettled.value.success && extraResultSettled.value.detail) {
-          next = {
-            ...next,
-            firstMessageTime: extraResultSettled.value.detail.firstMessageTime,
-            latestMessageTime: extraResultSettled.value.detail.latestMessageTime,
-            messageTables: Array.isArray(extraResultSettled.value.detail.messageTables) ? extraResultSettled.value.detail.messageTables : []
+            return {
+              ...prev,
+              firstMessageTime: detail.firstMessageTime,
+              latestMessageTime: detail.latestMessageTime,
+              messageTables: Array.isArray(detail.messageTables) ? detail.messageTables : []
            }
-        }
-
-        if (statsResultSettled.status === 'fulfilled' && statsResultSettled.value.success && statsResultSettled.value.data) {
-          const metric = statsResultSettled.value.data[normalizedSessionId]
-          if (metric) {
-            next = {
-              ...next,
-              messageCount: Number.isFinite(metric.totalMessages) ? metric.totalMessages : next.messageCount,
-              voiceMessages: metric.voiceMessages,
-              imageMessages: metric.imageMessages,
-              videoMessages: metric.videoMessages,
-              emojiMessages: metric.emojiMessages,
-              privateMutualGroups: metric.privateMutualGroups,
-              groupMemberCount: metric.groupMemberCount,
-              groupMyMessages: metric.groupMyMessages,
-              groupActiveSpeakers: metric.groupActiveSpeakers,
-              groupMutualFriends: metric.groupMutualFriends,
-              firstMessageTime: Number.isFinite(metric.firstTimestamp) ? metric.firstTimestamp : next.firstMessageTime,
-              latestMessageTime: Number.isFinite(metric.lastTimestamp) ? metric.lastTimestamp : next.latestMessageTime
-            }
-          }
-        }
-
-        return next
          })
+        }
+      }
+
+      let refreshIncludeRelations = false
+      let shouldRefreshStats = false
+      if (statsResultSettled.status === 'fulfilled' && statsResultSettled.value.success) {
+        const metric = statsResultSettled.value.data?.[normalizedSessionId] as SessionExportMetric | undefined
+        const cacheMeta = statsResultSettled.value.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+        refreshIncludeRelations = Boolean(cacheMeta?.includeRelations)
+        if (metric) {
+          applySessionDetailStats(normalizedSessionId, metric, cacheMeta, refreshIncludeRelations)
+        } else if (cacheMeta) {
+          setSessionDetail((prev) => {
+            if (!prev || prev.wxid !== normalizedSessionId) return prev
+            return {
+              ...prev,
+              relationStatsLoaded: refreshIncludeRelations || prev.relationStatsLoaded,
+              statsUpdatedAt: cacheMeta.updatedAt,
+              statsStale: cacheMeta.stale
+            }
+          })
+        }
+        shouldRefreshStats = Array.isArray(statsResultSettled.value.needsRefresh) &&
+          statsResultSettled.value.needsRefresh.includes(normalizedSessionId)
+      }
+
+      if (shouldRefreshStats) {
+        setIsRefreshingSessionDetailStats(true)
+        void (async () => {
+          try {
+            const freshResult = await window.electronAPI.chat.getExportSessionStats(
+              [normalizedSessionId],
+              { includeRelations: refreshIncludeRelations, forceRefresh: true }
+            )
+            if (requestSeq !== detailRequestSeqRef.current) return
+            if (freshResult.success && freshResult.data) {
+              const metric = freshResult.data[normalizedSessionId] as SessionExportMetric | undefined
+              const cacheMeta = freshResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+              if (metric) {
+                applySessionDetailStats(
+                  normalizedSessionId,
+                  metric,
+                  cacheMeta,
+                  refreshIncludeRelations ? true : undefined
+                )
+              }
+            }
+          } catch (error) {
+            console.error('导出页刷新会话统计失败:', error)
+          } finally {
+            if (requestSeq === detailRequestSeqRef.current) {
+              setIsRefreshingSessionDetailStats(false)
+            }
+          }
+        })()
+      }
    } catch (error) {
      console.error('导出页加载会话详情补充统计失败:', error)
    } finally {
@@ -2655,7 +2776,77 @@ function ExportPage() {
        setIsLoadingSessionDetailExtra(false)
      }
    }
-  }, [contactByUsername, sessionRowByUsername])
+  }, [applySessionDetailStats, contactByUsername, sessionRowByUsername])
+
+  const loadSessionRelationStats = useCallback(async () => {
+    const normalizedSessionId = String(sessionDetail?.wxid || '').trim()
+    if (!normalizedSessionId || isLoadingSessionRelationStats) return
+
+    const requestSeq = detailRequestSeqRef.current
+    setIsLoadingSessionRelationStats(true)
+    try {
+      const relationResult = await window.electronAPI.chat.getExportSessionStats(
+        [normalizedSessionId],
+        { includeRelations: true, allowStaleCache: true }
+      )
+      if (requestSeq !== detailRequestSeqRef.current) return
+
+      const metric = relationResult.success && relationResult.data
+        ? relationResult.data[normalizedSessionId] as SessionExportMetric | undefined
+        : undefined
+      const cacheMeta = relationResult.success
+        ? relationResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+        : undefined
+      if (metric) {
+        applySessionDetailStats(normalizedSessionId, metric, cacheMeta, true)
+      }
+
+      const needRefresh = relationResult.success &&
+        Array.isArray(relationResult.needsRefresh) &&
+        relationResult.needsRefresh.includes(normalizedSessionId)
+
+      if (needRefresh) {
+        setIsRefreshingSessionDetailStats(true)
+        void (async () => {
+          try {
+            const freshResult = await window.electronAPI.chat.getExportSessionStats(
+              [normalizedSessionId],
+              { includeRelations: true, forceRefresh: true }
+            )
+            if (requestSeq !== detailRequestSeqRef.current) return
+            if (freshResult.success && freshResult.data) {
+              const freshMetric = freshResult.data[normalizedSessionId] as SessionExportMetric | undefined
+              const freshMeta = freshResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+              if (freshMetric) {
+                applySessionDetailStats(normalizedSessionId, freshMetric, freshMeta, true)
+              }
+            }
+          } catch (error) {
+            console.error('导出页刷新会话关系统计失败:', error)
+          } finally {
+            if (requestSeq === detailRequestSeqRef.current) {
+              setIsRefreshingSessionDetailStats(false)
+            }
+          }
+        })()
+      }
+    } catch (error) {
+      console.error('导出页加载会话关系统计失败:', error)
+    } finally {
+      if (requestSeq === detailRequestSeqRef.current) {
+        setIsLoadingSessionRelationStats(false)
+      }
+    }
+  }, [applySessionDetailStats, isLoadingSessionRelationStats, sessionDetail?.wxid])
+
+  const closeSessionDetailPanel = useCallback(() => {
+    detailRequestSeqRef.current += 1
+    setShowSessionDetailPanel(false)
+    setIsLoadingSessionDetail(false)
+    setIsLoadingSessionDetailExtra(false)
+    setIsRefreshingSessionDetailStats(false)
+    setIsLoadingSessionRelationStats(false)
+  }, [])

  const openSessionDetail = useCallback((sessionId: string) => {
    if (!sessionId) return
@@ -2667,12 +2858,12 @@ function ExportPage() {
    if (!showSessionDetailPanel) return
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === 'Escape') {
-        setShowSessionDetailPanel(false)
+        closeSessionDetailPanel()
      }
    }
    window.addEventListener('keydown', handleKeyDown)
    return () => window.removeEventListener('keydown', handleKeyDown)
-  }, [showSessionDetailPanel])
+  }, [closeSessionDetailPanel, showSessionDetailPanel])

  const handleCopyDetailField = useCallback(async (text: string, field: string) => {
    try {
@@ -3421,7 +3612,7 @@ function ExportPage() {
          {showSessionDetailPanel && (
            <div
              className="export-session-detail-overlay"
-              onClick={() => setShowSessionDetailPanel(false)}
+              onClick={closeSessionDetailPanel}
            >
              <aside
                className="export-session-detail-panel"
@@ -3444,7 +3635,7 @@ function ExportPage() {
                    <div className="detail-header-id">{sessionDetail?.wxid || ''}</div>
                  </div>
                </div>
-                <button className="close-btn" onClick={() => setShowSessionDetailPanel(false)}>
+                <button className="close-btn" onClick={closeSessionDetailPanel}>
                  <X size={16} />
                </button>
              </div>
@@ -3498,6 +3689,13 @@ function ExportPage() {
                      <MessageSquare size={14} />
                      <span>消息统计（导出口径）</span>
                    </div>
+                    <div className="detail-stats-meta">
+                      {isRefreshingSessionDetailStats
+                        ? '统计刷新中...'
+                        : sessionDetail.statsUpdatedAt
+                          ? `${sessionDetail.statsStale ? '缓存于' : '更新于'} ${formatYmdHmDateTime(sessionDetail.statsUpdatedAt)}${sessionDetail.statsStale ? '（将后台刷新）' : ''}`
+                          : (isLoadingSessionDetailExtra ? '统计加载中...' : '暂无统计缓存')}
+                    </div>
                    <div className="detail-item">
                      <span className="label">消息总数</span>
                      <span className="value highlight">
@@ -3567,9 +3765,19 @@ function ExportPage() {
                        <div className="detail-item">
                          <span className="label">群共同好友数</span>
                          <span className="value">
-                            {Number.isFinite(sessionDetail.groupMutualFriends)
+                            {sessionDetail.relationStatsLoaded
+                              ? (Number.isFinite(sessionDetail.groupMutualFriends)
                                ? (sessionDetail.groupMutualFriends as number).toLocaleString()
-                              : (isLoadingSessionDetailExtra ? '统计中...' : '—')}
+                                : '—')
+                              : (
+                                <button
+                                  className="detail-inline-btn"
+                                  onClick={() => { void loadSessionRelationStats() }}
+                                  disabled={isLoadingSessionRelationStats || isLoadingSessionDetailExtra}
+                                >
+                                  {isLoadingSessionRelationStats ? '加载中...' : '点击加载'}
+                                </button>
+                              )}
                          </span>
                        </div>
                      </>
@@ -3577,9 +3785,19 @@ function ExportPage() {
                      <div className="detail-item">
                        <span className="label">共同群聊数</span>
                        <span className="value">
-                          {Number.isFinite(sessionDetail.privateMutualGroups)
+                          {sessionDetail.relationStatsLoaded
+                            ? (Number.isFinite(sessionDetail.privateMutualGroups)
                              ? (sessionDetail.privateMutualGroups as number).toLocaleString()
-                            : (isLoadingSessionDetailExtra ? '统计中...' : '—')}
+                              : '—')
+                            : (
+                              <button
+                                className="detail-inline-btn"
+                                onClick={() => { void loadSessionRelationStats() }}
+                                disabled={isLoadingSessionRelationStats || isLoadingSessionDetailExtra}
+                              >
+                                {isLoadingSessionRelationStats ? '加载中...' : '点击加载'}
+                              </button>
+                            )}
                        </span>
                      </div>
                    )}
--- a/src/pages/SnsPage.tsx
+++ b/src/pages/SnsPage.tsx
@@ -449,10 +449,10 @@ export default function SnsPage() {
                const snsPostCountMap = new Map<string, number>(
                    Object.entries(snsCountsResult.data).map(([username, count]) => [username, Math.max(0, Number(count || 0))])
                )
-                const contactsWithCounts = contactsList.map(contact => ({
+                const contactsWithCounts: Contact[] = contactsList.map(contact => ({
                    ...contact,
                    postCount: snsPostCountMap.get(contact.username) ?? 0,
-                    postCountStatus: 'ready'
+                    postCountStatus: 'ready' as const
                }))
                setContacts(contactsWithCounts)

--- a/src/types/electron.d.ts
+++ b/src/types/electron.d.ts
@@ -48,9 +48,18 @@ export interface ElectronAPI {
    onDownloadProgress: (callback: (progress: number) => void) => () => void
    onUpdateAvailable: (callback: (info: { version: string; releaseNotes: string }) => void) => () => void
  }
+  notification: {
+    show: (data: { title: string; content: string; avatarUrl?: string; sessionId: string }) => Promise<{ success?: boolean; error?: string } | void>
+    close: () => Promise<void>
+    click: (sessionId: string) => void
+    ready: () => void
+    resize: (width: number, height: number) => void
+    onShow: (callback: (event: any, data: any) => void) => () => void
+  }
  log: {
    getPath: () => Promise<string>
    read: () => Promise<{ success: boolean; content?: string; error?: string }>
+    debug: (data: any) => void
  }
  dbPath: {
    autoDetect: () => Promise<{ success: boolean; path?: string; error?: string }>
@@ -125,6 +134,11 @@ export interface ElectronAPI {
      messages?: Message[]
      error?: string
    }>
+    getCachedMessages: (sessionId: string) => Promise<{
+      success: boolean
+      messages?: Message[]
+      error?: string
+    }>
    getContact: (username: string) => Promise<Contact | null>
    getContactAvatar: (username: string) => Promise<{ avatarUrl?: string; displayName?: string } | null>
    updateMessage: (sessionId: string, localId: number, createTime: number, newContent: string) => Promise<{ success: boolean; error?: string }>
@@ -176,7 +190,10 @@ export interface ElectronAPI {
      }
      error?: string
    }>
-    getExportSessionStats: (sessionIds: string[]) => Promise<{
+    getExportSessionStats: (
+      sessionIds: string[],
+      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean }
+    ) => Promise<{
      success: boolean
      data?: Record<string, {
        totalMessages: number
@@ -192,6 +209,13 @@ export interface ElectronAPI {
        groupActiveSpeakers?: number
        groupMutualFriends?: number
      }>
+      cache?: Record<string, {
+        updatedAt: number
+        stale: boolean
+        includeRelations: boolean
+        source: 'memory' | 'disk' | 'fresh'
+      }>
+      needsRefresh?: string[]
      error?: string
    }>
    getImageData: (sessionId: string, msgId: string) => Promise<{ success: boolean; data?: string; error?: string }>
@@ -211,7 +235,7 @@ export interface ElectronAPI {
  }

  image: {
-    decrypt: (payload: { sessionId?: string; imageMd5?: string; imageDatName?: string; force?: boolean }) => Promise<{ success: boolean; localPath?: string; error?: string }>
+    decrypt: (payload: { sessionId?: string; imageMd5?: string; imageDatName?: string; force?: boolean }) => Promise<{ success: boolean; localPath?: string; liveVideoPath?: string; error?: string }>
    resolveCache: (payload: { sessionId?: string; imageMd5?: string; imageDatName?: string }) => Promise<{ success: boolean; localPath?: string; hasUpdate?: boolean; liveVideoPath?: string; error?: string }>
    preload: (payloads: Array<{ sessionId?: string; imageMd5?: string; imageDatName?: string }>) => Promise<boolean>
    onUpdateAvailable: (callback: (payload: { cacheKey: string; imageMd5?: string; imageDatName?: string }) => void) => () => void
@@ -327,6 +351,24 @@ export interface ElectronAPI {
      }>
      error?: string
    }>
+    getGroupMembersPanelData: (chatroomId: string, forceRefresh?: boolean) => Promise<{
+      success: boolean
+      data?: Array<{
+        username: string
+        displayName: string
+        avatarUrl?: string
+        nickname?: string
+        alias?: string
+        remark?: string
+        groupNickname?: string
+        isOwner?: boolean
+        isFriend: boolean
+        messageCount: number
+      }>
+      fromCache?: boolean
+      updatedAt?: number
+      error?: string
+    }>
    getGroupMessageRanking: (chatroomId: string, limit?: number, startTime?: number, endTime?: number) => Promise<{
      success: boolean
      data?: Array<{
@@ -443,6 +485,20 @@ export interface ElectronAPI {
          phrase: string
          count: number
        }>
+        snsStats?: {
+          totalPosts: number
+          typeCounts?: Record<string, number>
+          topLikers: { username: string; displayName: string; avatarUrl?: string; count: number }[]
+          topLiked: { username: string; displayName: string; avatarUrl?: string; count: number }[]
+        }
+        lostFriend: {
+          username: string
+          displayName: string
+          avatarUrl?: string
+          earlyCount: number
+          lateCount: number
+          periodDesc: string
+        } | null
      }
      error?: string
    }>
@@ -498,15 +554,26 @@ export interface ElectronAPI {
          myTopEmojiMd5?: string
          friendTopEmojiMd5?: string
          myTopEmojiUrl?: string
+          friendTopEmojiUrl?: string
+          myTopEmojiCount?: number
+          friendTopEmojiCount?: number
          topPhrases: Array<{ phrase: string; count: number }>
          myExclusivePhrases: Array<{ phrase: string; count: number }>
          friendExclusivePhrases: Array<{ phrase: string; count: number }>
          heatmap?: number[][]
          initiative?: { initiated: number; received: number }
-          response?: { avg: number; fastest: number; count: number }
+          response?: { avg: number; fastest: number; slowest?: number; count: number }
          monthly?: Record<string, number>
          streak?: { days: number; startDate: string; endDate: string }
        }
+        topPhrases: Array<{ phrase: string; count: number }>
+        myExclusivePhrases: Array<{ phrase: string; count: number }>
+        friendExclusivePhrases: Array<{ phrase: string; count: number }>
+        heatmap?: number[][]
+        initiative?: { initiated: number; received: number }
+        response?: { avg: number; fastest: number; slowest?: number; count: number }
+        monthly?: Record<string, number>
+        streak?: { days: number; startDate: string; endDate: string }
      }
      error?: string
    }>
@@ -585,7 +652,7 @@ export interface ElectronAPI {
      error?: string
    }>
    debugResource: (url: string) => Promise<{ success: boolean; status?: number; headers?: any; error?: string }>
-    proxyImage: (payload: { url: string; key?: string | number }) => Promise<{ success: boolean; dataUrl?: string; error?: string }>
+    proxyImage: (payload: { url: string; key?: string | number }) => Promise<{ success: boolean; dataUrl?: string; videoPath?: string; error?: string }>
    downloadImage: (payload: { url: string; key?: string | number }) => Promise<{ success: boolean; data?: any; contentType?: string; error?: string }>
    exportTimeline: (options: {
      outputDir: string
@@ -618,6 +685,7 @@ export interface ElectronAPI {

 export interface ExportOptions {
  format: 'chatlab' | 'chatlab-jsonl' | 'json' | 'arkme-json' | 'html' | 'txt' | 'excel' | 'weclone' | 'sql'
+  contentType?: 'text' | 'voice' | 'image' | 'video' | 'emoji'
  dateRange?: { start: number; end: number } | null
  senderUsername?: string
  fileNameSuffix?: string
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,22 +1 @@
 /// <reference types="vite/client" />
-
-interface Window {
-    electronAPI: {
-        // ... other methods ...
-        auth: {
-            hello: (message?: string) => Promise<{ success: boolean; error?: string }>
-            verifyEnabled: () => Promise<boolean>
-            unlock: (password: string) => Promise<{ success: boolean; error?: string }>
-            enableLock: (password: string) => Promise<{ success: boolean; error?: string }>
-            disableLock: (password: string) => Promise<{ success: boolean; error?: string }>
-            changePassword: (oldPassword: string, newPassword: string) => Promise<{ success: boolean; error?: string }>
-            setHelloSecret: (password: string) => Promise<{ success: boolean }>
-            clearHelloSecret: () => Promise<{ success: boolean }>
-            isLockMode: () => Promise<boolean>
-        }
-        // For brevity, using 'any' for other parts or properly importing types if available.
-        // In a real scenario, you'd likely want to keep the full interface definition consistent with preload.ts
-        // or import a shared type definition.
-        [key: string]: any
-    }
-}