diff --git a/electron/main.ts b/electron/main.ts
index b91f2ad..7770856 100644
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -87,6 +87,7 @@ let onboardingWindow: BrowserWindow | null = null
 // Splash 启动窗口
 let splashWindow: BrowserWindow | null = null
 const sessionChatWindows = new Map<string, BrowserWindow>()
+const sessionChatWindowSources = new Map<string, 'chat' | 'export'>()
 const keyService = new KeyService()
 
 let mainWindowReady = false
@@ -123,6 +124,32 @@ interface AnnualReportYearsTaskState {
   updatedAt: number
 }
 
+interface OpenSessionChatWindowOptions {
+  source?: 'chat' | 'export'
+}
+
+const normalizeSessionChatWindowSource = (source: unknown): 'chat' | 'export' => {
+  return String(source || '').trim().toLowerCase() === 'export' ? 'export' : 'chat'
+}
+
+const loadSessionChatWindowContent = (
+  win: BrowserWindow,
+  sessionId: string,
+  source: 'chat' | 'export'
+) => {
+  const query = new URLSearchParams({
+    sessionId,
+    source
+  }).toString()
+  if (process.env.VITE_DEV_SERVER_URL) {
+    win.loadURL(`${process.env.VITE_DEV_SERVER_URL}#/chat-window?${query}`)
+    return
+  }
+  win.loadFile(join(__dirname, '../dist/index.html'), {
+    hash: `/chat-window?${query}`
+  })
+}
+
 const annualReportYearsLoadTasks = new Map<string, AnnualReportYearsTaskState>()
 const annualReportYearsTaskByCacheKey = new Map<string, string>()
 const annualReportYearsSnapshotCache = new Map<string, { snapshot: AnnualReportYearsProgressPayload; updatedAt: number; taskId: string }>()
@@ -688,12 +715,18 @@ function createChatHistoryWindow(sessionId: string, messageId: number) {
 /**
  * 创建独立的会话聊天窗口（单会话，复用聊天页右侧消息区域）
  */
-function createSessionChatWindow(sessionId: string) {
+function createSessionChatWindow(sessionId: string, options?: OpenSessionChatWindowOptions) {
   const normalizedSessionId = String(sessionId || '').trim()
   if (!normalizedSessionId) return null
+  const normalizedSource = normalizeSessionChatWindowSource(options?.source)
 
   const existing = sessionChatWindows.get(normalizedSessionId)
   if (existing && !existing.isDestroyed()) {
+    const trackedSource = sessionChatWindowSources.get(normalizedSessionId) || 'chat'
+    if (trackedSource !== normalizedSource) {
+      loadSessionChatWindowContent(existing, normalizedSessionId, normalizedSource)
+      sessionChatWindowSources.set(normalizedSessionId, normalizedSource)
+    }
     if (existing.isMinimized()) {
       existing.restore()
     }
@@ -730,10 +763,9 @@ function createSessionChatWindow(sessionId: string) {
     autoHideMenuBar: true
   })
 
-  const sessionParam = `sessionId=${encodeURIComponent(normalizedSessionId)}`
-  if (process.env.VITE_DEV_SERVER_URL) {
-    win.loadURL(`${process.env.VITE_DEV_SERVER_URL}#/chat-window?${sessionParam}`)
+  loadSessionChatWindowContent(win, normalizedSessionId, normalizedSource)
 
+  if (process.env.VITE_DEV_SERVER_URL) {
     win.webContents.on('before-input-event', (event, input) => {
       if (input.key === 'F12' || (input.control && input.shift && input.key === 'I')) {
         if (win.webContents.isDevToolsOpened()) {
@@ -744,10 +776,6 @@ function createSessionChatWindow(sessionId: string) {
         event.preventDefault()
       }
     })
-  } else {
-    win.loadFile(join(__dirname, '../dist/index.html'), {
-      hash: `/chat-window?${sessionParam}`
-    })
   }
 
   win.once('ready-to-show', () => {
@@ -759,10 +787,12 @@ function createSessionChatWindow(sessionId: string) {
     const tracked = sessionChatWindows.get(normalizedSessionId)
     if (tracked === win) {
       sessionChatWindows.delete(normalizedSessionId)
+      sessionChatWindowSources.delete(normalizedSessionId)
     }
   })
 
   sessionChatWindows.set(normalizedSessionId, win)
+  sessionChatWindowSources.set(normalizedSessionId, normalizedSource)
   return win
 }
 
@@ -1071,8 +1101,8 @@ function registerIpcHandlers() {
   })
 
   // 打开会话聊天窗口（同会话仅保留一个窗口并聚焦）
-  ipcMain.handle('window:openSessionChatWindow', (_, sessionId: string) => {
-    const win = createSessionChatWindow(sessionId)
+  ipcMain.handle('window:openSessionChatWindow', (_, sessionId: string, options?: OpenSessionChatWindowOptions) => {
+    const win = createSessionChatWindow(sessionId, options)
     return Boolean(win)
   })
 
@@ -1410,6 +1440,7 @@ function registerIpcHandlers() {
     forceRefresh?: boolean
     allowStaleCache?: boolean
     preferAccurateSpecialTypes?: boolean
+    cacheOnly?: boolean
   }) => {
     return chatService.getExportSessionStats(sessionIds, options)
   })
diff --git a/electron/preload.ts b/electron/preload.ts
index c173d10..3c51ee3 100644
--- a/electron/preload.ts
+++ b/electron/preload.ts
@@ -99,8 +99,8 @@ contextBridge.exposeInMainWorld('electronAPI', {
       ipcRenderer.invoke('window:openImageViewerWindow', imagePath, liveVideoPath),
     openChatHistoryWindow: (sessionId: string, messageId: number) =>
       ipcRenderer.invoke('window:openChatHistoryWindow', sessionId, messageId),
-    openSessionChatWindow: (sessionId: string) =>
-      ipcRenderer.invoke('window:openSessionChatWindow', sessionId)
+    openSessionChatWindow: (sessionId: string, options?: { source?: 'chat' | 'export' }) =>
+      ipcRenderer.invoke('window:openSessionChatWindow', sessionId, options)
   },
 
   // 数据库路径
@@ -174,7 +174,13 @@ contextBridge.exposeInMainWorld('electronAPI', {
     getSessionDetailExtra: (sessionId: string) => ipcRenderer.invoke('chat:getSessionDetailExtra', sessionId),
     getExportSessionStats: (
       sessionIds: string[],
-      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean; preferAccurateSpecialTypes?: boolean }
+      options?: {
+        includeRelations?: boolean
+        forceRefresh?: boolean
+        allowStaleCache?: boolean
+        preferAccurateSpecialTypes?: boolean
+        cacheOnly?: boolean
+      }
     ) => ipcRenderer.invoke('chat:getExportSessionStats', sessionIds, options),
     getGroupMyMessageCountHint: (chatroomId: string) =>
       ipcRenderer.invoke('chat:getGroupMyMessageCountHint', chatroomId),
diff --git a/electron/services/chatService.ts b/electron/services/chatService.ts
index 4c5e43e..68cb598 100644
--- a/electron/services/chatService.ts
+++ b/electron/services/chatService.ts
@@ -164,6 +164,7 @@ interface ExportSessionStatsOptions {
   forceRefresh?: boolean
   allowStaleCache?: boolean
   preferAccurateSpecialTypes?: boolean
+  cacheOnly?: boolean
 }
 
 interface ExportSessionStatsCacheMeta {
@@ -5354,6 +5355,7 @@ class ChatService {
       const forceRefresh = options.forceRefresh === true
       const allowStaleCache = options.allowStaleCache === true
       const preferAccurateSpecialTypes = options.preferAccurateSpecialTypes === true
+      const cacheOnly = options.cacheOnly === true
 
       const normalizedSessionIds = Array.from(
         new Set(
@@ -5377,32 +5379,34 @@ class ChatService {
           ? this.getGroupMyMessageCountHintEntry(sessionId)
           : null
         const cachedResult = this.getSessionStatsCacheEntry(sessionId)
-        if (!forceRefresh && !preferAccurateSpecialTypes) {
-          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)
-              if (groupMyMessagesHint && Number.isFinite(groupMyMessagesHint.entry.messageCount)) {
-                resultMap[sessionId].groupMyMessages = groupMyMessagesHint.entry.messageCount
-              }
-              cacheMeta[sessionId] = {
-                updatedAt: cachedResult.entry.updatedAt,
-                stale,
-                includeRelations: cachedResult.entry.includeRelations,
-                source: cachedResult.source
-              }
-              if (stale) {
-                needsRefreshSet.add(sessionId)
-              }
-              continue
+        const canUseCache = cacheOnly || (!forceRefresh && !preferAccurateSpecialTypes)
+        if (canUseCache && cachedResult && this.supportsRequestedRelation(cachedResult.entry, includeRelations)) {
+          const stale = now - cachedResult.entry.updatedAt > this.sessionStatsCacheTtlMs
+          if (!stale || allowStaleCache || cacheOnly) {
+            resultMap[sessionId] = this.fromSessionStatsCacheStats(cachedResult.entry.stats)
+            if (groupMyMessagesHint && Number.isFinite(groupMyMessagesHint.entry.messageCount)) {
+              resultMap[sessionId].groupMyMessages = groupMyMessagesHint.entry.messageCount
+            }
+            cacheMeta[sessionId] = {
+              updatedAt: cachedResult.entry.updatedAt,
+              stale,
+              includeRelations: cachedResult.entry.includeRelations,
+              source: cachedResult.source
+            }
+            if (stale) {
+              needsRefreshSet.add(sessionId)
             }
-          }
-          // allowStaleCache 仅对“已有缓存”生效；无缓存会话仍需进入计算流程。
-          if (allowStaleCache && cachedResult) {
-            needsRefreshSet.add(sessionId)
             continue
           }
         }
+        // allowStaleCache/cacheOnly 仅对“已有缓存”生效；无缓存会话不会直接算重查询。
+        if (canUseCache && allowStaleCache && cachedResult) {
+          needsRefreshSet.add(sessionId)
+          continue
+        }
+        if (cacheOnly) {
+          continue
+        }
         pendingSessionIds.push(sessionId)
       }
 
diff --git a/src/App.tsx b/src/App.tsx
index 9d040d2..05d1990 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -402,8 +402,10 @@ function App() {
 
   // 独立会话聊天窗口（仅显示聊天内容区域）
   if (isStandaloneChatWindow) {
-    const sessionId = new URLSearchParams(location.search).get('sessionId') || ''
-    return <ChatPage standaloneSessionWindow initialSessionId={sessionId} />
+    const params = new URLSearchParams(location.search)
+    const sessionId = params.get('sessionId') || ''
+    const standaloneSource = params.get('source')
+    return <ChatPage standaloneSessionWindow initialSessionId={sessionId} standaloneSource={standaloneSource} />
   }
 
   // 独立通知窗口
diff --git a/src/pages/ChatPage.tsx b/src/pages/ChatPage.tsx
index 90df9aa..56d7ba5 100644
--- a/src/pages/ChatPage.tsx
+++ b/src/pages/ChatPage.tsx
@@ -204,6 +204,7 @@ function formatYmdHmDateTime(timestamp?: number): string {
 interface ChatPageProps {
   standaloneSessionWindow?: boolean
   initialSessionId?: string | null
+  standaloneSource?: string | null
 }
 
 
@@ -408,8 +409,10 @@ const SessionItem = React.memo(function SessionItem({
 
 
 function ChatPage(props: ChatPageProps) {
-  const { standaloneSessionWindow = false, initialSessionId = null } = props
+  const { standaloneSessionWindow = false, initialSessionId = null, standaloneSource = null } = props
   const normalizedInitialSessionId = useMemo(() => String(initialSessionId || '').trim(), [initialSessionId])
+  const normalizedStandaloneSource = useMemo(() => String(standaloneSource || '').trim().toLowerCase(), [standaloneSource])
+  const shouldHideStandaloneDetailButton = standaloneSessionWindow && normalizedStandaloneSource === 'export'
   const navigate = useNavigate()
 
   const {
@@ -3863,13 +3866,15 @@ function ChatPage(props: ChatPageProps) {
                 >
                   <RefreshCw size={18} className={isRefreshingMessages ? 'spin' : ''} />
                 </button>
-                <button
-                  className={`icon-btn detail-btn ${showDetailPanel ? 'active' : ''}`}
-                  onClick={toggleDetailPanel}
-                  title="会话详情"
-                >
-                  <Info size={18} />
-                </button>
+                {!shouldHideStandaloneDetailButton && (
+                  <button
+                    className={`icon-btn detail-btn ${showDetailPanel ? 'active' : ''}`}
+                    onClick={toggleDetailPanel}
+                    title="会话详情"
+                  >
+                    <Info size={18} />
+                  </button>
+                )}
               </div>
             </div>
 
diff --git a/src/pages/ExportPage.tsx b/src/pages/ExportPage.tsx
index 01e219f..0615f8b 100644
--- a/src/pages/ExportPage.tsx
+++ b/src/pages/ExportPage.tsx
@@ -163,6 +163,7 @@ interface TimeRangeDialogDraft {
 }
 
 const defaultTxtColumns = ['index', 'time', 'senderRole', 'messageType', 'content']
+const DETAIL_PRECISE_REFRESH_COOLDOWN_MS = 10 * 60 * 1000
 const contentTypeLabels: Record<ContentType, string> = {
   text: '聊天文本',
   voice: '语音',
@@ -1307,6 +1308,8 @@ function ExportPage() {
   const hasBaseConfigReadyRef = useRef(false)
   const sessionCountRequestIdRef = useRef(0)
   const activeTabRef = useRef<ConversationTab>('private')
+  const detailStatsPriorityRef = useRef(false)
+  const sessionPreciseRefreshAtRef = useRef<Record<string, number>>({})
 
   const ensureExportCacheScope = useCallback(async (): Promise<string> => {
     if (exportCacheScopeReadyRef.current) {
@@ -1894,6 +1897,9 @@ function ExportPage() {
 
     setIsLoadingSessionCounts(true)
     try {
+      if (detailStatsPriorityRef.current) {
+        return { ...accumulatedCounts }
+      }
       if (prioritizedSessionIds.length > 0) {
         const priorityResult = await window.electronAPI.chat.getSessionMessageCounts(prioritizedSessionIds)
         if (isStale()) return { ...accumulatedCounts }
@@ -1902,6 +1908,9 @@ function ExportPage() {
         }
       }
 
+      if (detailStatsPriorityRef.current) {
+        return { ...accumulatedCounts }
+      }
       if (remainingSessionIds.length > 0) {
         const remainingResult = await window.electronAPI.chat.getSessionMessageCounts(remainingSessionIds)
         if (isStale()) return { ...accumulatedCounts }
@@ -1930,6 +1939,7 @@ function ExportPage() {
     const loadToken = Date.now()
     sessionLoadTokenRef.current = loadToken
     sessionsHydratedAtRef.current = 0
+    sessionPreciseRefreshAtRef.current = {}
     setIsLoading(true)
     setIsSessionEnriching(false)
     sessionCountRequestIdRef.current += 1
@@ -2027,12 +2037,14 @@ function ExportPage() {
         setIsSessionEnriching(true)
         void (async () => {
           try {
+            if (detailStatsPriorityRef.current) return
             let contactMap = { ...cachedContactMap }
             let avatarEntries = { ...cachedAvatarEntries }
             let hasFreshNetworkData = false
             let hasNetworkContactsSnapshot = false
 
             if (isStale()) return
+            if (detailStatsPriorityRef.current) return
             const contactsResult = await withTimeout(window.electronAPI.chat.getContacts(), CONTACT_ENRICH_TIMEOUT_MS)
             if (isStale()) return
 
@@ -2091,6 +2103,7 @@ function ExportPage() {
             if (needsEnrichment.length > 0) {
               for (let i = 0; i < needsEnrichment.length; i += EXPORT_AVATAR_ENRICH_BATCH_SIZE) {
                 if (isStale()) return
+                if (detailStatsPriorityRef.current) return
                 const batch = needsEnrichment.slice(i, i + EXPORT_AVATAR_ENRICH_BATCH_SIZE)
                 if (batch.length === 0) continue
                 try {
@@ -3399,6 +3412,11 @@ function ExportPage() {
   const loadSessionDetail = useCallback(async (sessionId: string) => {
     const normalizedSessionId = String(sessionId || '').trim()
     if (!normalizedSessionId) return
+    const preciseCacheKey = `${exportCacheScopeRef.current}::${normalizedSessionId}`
+
+    detailStatsPriorityRef.current = true
+    sessionCountRequestIdRef.current += 1
+    setIsLoadingSessionCounts(false)
 
     const requestSeq = ++detailRequestSeqRef.current
     const mappedSession = sessionRowByUsername.get(normalizedSessionId)
@@ -3510,19 +3528,13 @@ function ExportPage() {
     }
 
     try {
-      const [extraResultSettled, statsResultSettled] = await Promise.allSettled([
-        window.electronAPI.chat.getSessionDetailExtra(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) {
+      const extraPromise = window.electronAPI.chat.getSessionDetailExtra(normalizedSessionId)
+      void (async () => {
+        try {
+          const extraResult = await extraPromise
+          if (requestSeq !== detailRequestSeqRef.current) return
+          if (!extraResult.success || !extraResult.detail) return
+          const detail = extraResult.detail
           setSessionDetail((prev) => {
             if (!prev || prev.wxid !== normalizedSessionId) return prev
             return {
@@ -3532,62 +3544,86 @@ function ExportPage() {
               messageTables: Array.isArray(detail.messageTables) ? detail.messageTables : []
             }
           })
-        }
-      }
-
-      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
-        if (metric) {
-          applySessionDetailStats(normalizedSessionId, metric, cacheMeta, false)
-        } else if (cacheMeta) {
-          setSessionDetail((prev) => {
-            if (!prev || prev.wxid !== normalizedSessionId) return prev
-            return {
-              ...prev,
-              statsUpdatedAt: cacheMeta.updatedAt,
-              statsStale: cacheMeta.stale
-            }
-          })
-        }
-      }
-
-      setIsRefreshingSessionDetailStats(true)
-      void (async () => {
-        try {
-          // 后台精确补算三类重字段（转账/红包/通话），不阻塞首屏基础统计显示。
-          const freshResult = await window.electronAPI.chat.getExportSessionStats(
-            [normalizedSessionId],
-            { includeRelations: false, forceRefresh: true, preferAccurateSpecialTypes: 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, false)
-            } else if (cacheMeta) {
-              setSessionDetail((prev) => {
-                if (!prev || prev.wxid !== normalizedSessionId) return prev
-                return {
-                  ...prev,
-                  statsUpdatedAt: cacheMeta.updatedAt,
-                  statsStale: cacheMeta.stale
-                }
-              })
-            }
-          }
         } catch (error) {
-          console.error('导出页刷新会话统计失败:', error)
+          console.error('导出页加载会话详情补充信息失败:', error)
         } finally {
           if (requestSeq === detailRequestSeqRef.current) {
-            setIsRefreshingSessionDetailStats(false)
+            setIsLoadingSessionDetailExtra(false)
           }
         }
       })()
+
+      let quickMetric: SessionExportMetric | undefined
+      let quickCacheMeta: SessionExportCacheMeta | undefined
+      try {
+        const quickStatsResult = await window.electronAPI.chat.getExportSessionStats(
+          [normalizedSessionId],
+          { includeRelations: false, allowStaleCache: true, cacheOnly: true }
+        )
+        if (requestSeq !== detailRequestSeqRef.current) return
+        if (quickStatsResult.success) {
+          quickMetric = quickStatsResult.data?.[normalizedSessionId] as SessionExportMetric | undefined
+          quickCacheMeta = quickStatsResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
+          if (quickMetric) {
+            applySessionDetailStats(normalizedSessionId, quickMetric, quickCacheMeta, false)
+          } else if (quickCacheMeta) {
+            const cacheMeta = quickCacheMeta
+            setSessionDetail((prev) => {
+              if (!prev || prev.wxid !== normalizedSessionId) return prev
+              return {
+                ...prev,
+                statsUpdatedAt: cacheMeta.updatedAt,
+                statsStale: cacheMeta.stale
+              }
+            })
+          }
+        }
+      } catch (error) {
+        console.error('导出页读取会话统计缓存失败:', error)
+      }
+
+      const lastPreciseAt = sessionPreciseRefreshAtRef.current[preciseCacheKey] || 0
+      const hasRecentPrecise = Date.now() - lastPreciseAt <= DETAIL_PRECISE_REFRESH_COOLDOWN_MS
+      const shouldRunPreciseRefresh = !hasRecentPrecise && (!quickMetric || Boolean(quickCacheMeta?.stale))
+
+      if (shouldRunPreciseRefresh) {
+        setIsRefreshingSessionDetailStats(true)
+        void (async () => {
+          try {
+            // 后台精确补算三类重字段（转账/红包/通话），不阻塞首屏基础统计显示。
+            const freshResult = await window.electronAPI.chat.getExportSessionStats(
+              [normalizedSessionId],
+              { includeRelations: false, forceRefresh: true, preferAccurateSpecialTypes: 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, false)
+                sessionPreciseRefreshAtRef.current[preciseCacheKey] = Date.now()
+              } else if (cacheMeta) {
+                setSessionDetail((prev) => {
+                  if (!prev || prev.wxid !== normalizedSessionId) return prev
+                  return {
+                    ...prev,
+                    statsUpdatedAt: cacheMeta.updatedAt,
+                    statsStale: cacheMeta.stale
+                  }
+                })
+              }
+            }
+          } 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 {
       if (requestSeq === detailRequestSeqRef.current) {
         setIsLoadingSessionDetailExtra(false)
       }
@@ -3627,6 +3663,7 @@ function ExportPage() {
 
   const closeSessionDetailPanel = useCallback(() => {
     detailRequestSeqRef.current += 1
+    detailStatsPriorityRef.current = false
     setShowSessionDetailPanel(false)
     setIsLoadingSessionDetail(false)
     setIsLoadingSessionDetailExtra(false)
@@ -3636,6 +3673,7 @@ function ExportPage() {
 
   const openSessionDetail = useCallback((sessionId: string) => {
     if (!sessionId) return
+    detailStatsPriorityRef.current = true
     setShowSessionDetailPanel(true)
     void loadSessionDetail(sessionId)
   }, [loadSessionDetail])
@@ -3827,7 +3865,7 @@ function ExportPage() {
                 title={canExport ? '在新窗口打开该会话' : '该联系人暂无会话记录'}
                 onClick={() => {
                   if (!canExport) return
-                  void window.electronAPI.window.openSessionChatWindow(contact.username)
+                  void window.electronAPI.window.openSessionChatWindow(contact.username, { source: 'export' })
                 }}
               >
                 <ExternalLink size={13} />
diff --git a/src/types/electron.d.ts b/src/types/electron.d.ts
index a3abc38..079d30f 100644
--- a/src/types/electron.d.ts
+++ b/src/types/electron.d.ts
@@ -1,5 +1,9 @@
 import type { ChatSession, Message, Contact, ContactInfo } from './models'
 
+export interface SessionChatWindowOpenOptions {
+  source?: 'chat' | 'export'
+}
+
 export interface ElectronAPI {
   window: {
     minimize: () => void
@@ -13,7 +17,7 @@ export interface ElectronAPI {
     resizeToFitVideo: (videoWidth: number, videoHeight: number) => Promise<void>
     openImageViewerWindow: (imagePath: string, liveVideoPath?: string) => Promise<void>
     openChatHistoryWindow: (sessionId: string, messageId: number) => Promise<boolean>
-    openSessionChatWindow: (sessionId: string) => Promise<boolean>
+    openSessionChatWindow: (sessionId: string, options?: SessionChatWindowOpenOptions) => Promise<boolean>
   }
   config: {
     get: (key: string) => Promise<unknown>
@@ -250,7 +254,13 @@ export interface ElectronAPI {
     }>
     getExportSessionStats: (
       sessionIds: string[],
-      options?: { includeRelations?: boolean; forceRefresh?: boolean; allowStaleCache?: boolean; preferAccurateSpecialTypes?: boolean }
+      options?: {
+        includeRelations?: boolean
+        forceRefresh?: boolean
+        allowStaleCache?: boolean
+        preferAccurateSpecialTypes?: boolean
+        cacheOnly?: boolean
+      }
     ) => Promise<{
       success: boolean
       data?: Record<string, {