feat: 修复导出任务状态并优化聊天记录导出体验

.gitignore

@@ -13,3 +13,6 @@ docs/design/
 docs/ui-redesign-plan.md
 docs/ui-redesign-spec.md
 AGENTS.md
+findings.md
+progress.md
+task_plan.md

src/main/export-html-template.ts

@@ -1,6 +1,6 @@
 import type { Message } from '../shared/types'
 
-export const exportStyles = `:root{color-scheme:light;--page:#edf2f0;--panel:#fff;--text:#1d2a25;--muted:#68766f;--border:#d8e2dc;--mine:#d9f0e2;--accent:#176b57}*{box-sizing:border-box}body{margin:0;background:var(--page);color:var(--text);font:14px system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}.page{max-width:1240px;height:100vh;margin:auto;padding:22px 28px;display:flex;flex-direction:column}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:18px 24px;box-shadow:0 8px 24px #29483b12}.title{font-size:18px;font-weight:750}.meta{color:var(--muted);margin-left:12px;font-size:13px}.controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:0}.controls input,.controls button{border:1px solid var(--border);border-radius:10px;padding:9px 12px;background:#fff;font:inherit}.controls input[type=search]{width:260px}.controls input[type=datetime-local],.controls #jump{display:none}.controls button{background:var(--accent);border-color:var(--accent);color:#fff;cursor:pointer}.count{margin-left:8px;color:var(--muted);font-size:13px}.scroll{margin-top:18px;overflow:auto;flex:1;padding:10px 6px 30px}.message{display:flex;flex-direction:column;gap:6px;max-width:820px;margin:0 0 22px}.message.hidden{display:none}.message.sent{align-items:flex-end;margin-left:auto}.time{color:var(--muted);font-size:11px;margin:0 12px}.row{display:flex;gap:12px;align-items:flex-end}.sent .row{flex-direction:row-reverse}.avatar{width:38px;height:38px;flex:0 0 auto;border-radius:50%;overflow:hidden;background:#dcebe4;display:grid;place-items:center}.avatar img{width:100%;height:100%;object-fit:cover}.bubble{max-width:min(78%,760px);padding:13px 15px;border:1px solid var(--border);border-radius:10px 18px 18px 18px;background:#fff;box-shadow:0 4px 12px #29483b0d}.sent .bubble{background:var(--mine);border-color:#c7e6d4;border-radius:18px 10px 18px 18px}.sender{color:var(--muted);font-size:12px;margin-bottom:5px}.content{line-height:1.7;word-break:break-word;white-space:pre-wrap}.audio-wrap{width:260px;min-width:260px}.audio{display:block;width:260px;height:38px}.quote-reference{margin-top:10px;padding:8px 11px;border-left:3px solid #8eb4a3;background:#f1f6f3;color:var(--muted);display:grid;gap:3px}.quote-reference strong{font-weight:650;color:var(--text)}.quote-reference span{white-space:pre-wrap}.media-image{display:block;max-width:100%;max-height:360px;border-radius:12px;object-fit:contain;background:#eef2f5;cursor:zoom-in}.lightbox{position:fixed;inset:0;display:none;place-items:center;background:#14231ddd;z-index:10;padding:24px;overflow:auto}.lightbox.open{display:grid}.lightbox img{width:min(86vw,980px);max-height:88vh;object-fit:contain;cursor:zoom-in;transform:scale(var(--zoom,1));transform-origin:center;transition:transform .12s ease}`
+export const exportStyles = `:root{color-scheme:light;--page:#edf2f0;--panel:#fff;--text:#1d2a25;--muted:#68766f;--border:#d8e2dc;--mine:#d9f0e2;--accent:#176b57}*{box-sizing:border-box}body{margin:0;background:var(--page);color:var(--text);font:14px system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}.page{max-width:1240px;height:100vh;margin:auto;padding:22px 28px;display:flex;flex-direction:column}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:18px 24px;box-shadow:0 8px 24px #29483b12}.title{font-size:18px;font-weight:750}.meta{color:var(--muted);margin-left:12px;font-size:13px}.controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:0}.controls input,.controls button{border:1px solid var(--border);border-radius:10px;padding:9px 12px;background:#fff;font:inherit}.controls input[type=search]{width:260px}.controls input[type=datetime-local],.controls #jump{display:none}.controls button{background:var(--accent);border-color:var(--accent);color:#fff;cursor:pointer}.count{margin-left:8px;color:var(--muted);font-size:13px}.scroll{margin-top:18px;overflow:auto;flex:1;padding:10px 6px 30px;display:flex;flex-direction:column;align-items:center}.message{display:flex;flex-direction:column;gap:6px;width:min(100%,820px);margin:0 0 22px}.message.hidden{display:none}.message.sent{align-items:flex-end;margin-left:auto}.message.system{align-items:center;width:min(100%,820px)}.message.system .row{justify-content:center}.message.system .avatar{display:none}.message.system .bubble{max-width:92%;padding:5px 10px;border:0;border-radius:5px;background:#e9eeeb;color:var(--muted);font-size:11px;text-align:center;box-shadow:none}.message.system .sender{display:none}.time{color:var(--muted);font-size:11px;margin:0 12px}.row{display:flex;gap:12px;align-items:flex-end}.sent .row{flex-direction:row-reverse}.avatar{width:38px;height:38px;flex:0 0 auto;border-radius:50%;overflow:hidden;background:#dcebe4;display:grid;place-items:center}.avatar img{width:100%;height:100%;object-fit:cover}.bubble{max-width:min(78%,760px);padding:13px 15px;border:1px solid var(--border);border-radius:10px 18px 18px 18px;background:#fff;box-shadow:0 4px 12px #29483b0d}.sent .bubble{background:var(--mine);border-color:#c7e6d4;border-radius:18px 10px 18px 18px}.sender{color:var(--muted);font-size:12px;margin-bottom:5px}.content{line-height:1.7;word-break:break-word;white-space:pre-wrap}.audio-wrap{width:260px;min-width:260px}.audio{display:block;width:260px;height:38px}.quote-reference{margin-top:10px;padding:8px 11px;border-left:3px solid #8eb4a3;background:#f1f6f3;color:var(--muted);display:grid;gap:3px}.quote-reference strong{font-weight:650;color:var(--text)}.quote-reference span{white-space:pre-wrap}.media-image{display:block;max-width:100%;max-height:360px;border-radius:12px;object-fit:contain;background:#eef2f5;cursor:zoom-in}.lightbox{position:fixed;inset:0;display:none;place-items:center;background:#14231ddd;z-index:10;padding:24px;overflow:auto}.lightbox.open{display:grid}.lightbox img{width:min(86vw,980px);max-height:88vh;object-fit:contain;cursor:zoom-in;transform:scale(var(--zoom,1));transform-origin:center;transition:transform .12s ease}`
 const safe = (value: unknown): string =>
   String(value ?? '').replace(
     /[&<>"']/g,
@@ -32,8 +32,9 @@ export function renderExportPage(name: string, messages: Message[]): string {
         m.exportShowAvatar === false
           ? ''
           : `<div class="avatar">${m.exportAvatarUrl ? `<img src="${safe(m.exportAvatarUrl)}" alt="">` : avatar}</div>`
+      const isPat = m.contentData?.type === 'system' && m.contentData.pat
       const text = m.content || (m.contentData?.type === 'quote' ? m.contentData.title : '')
-      return `<article class="message${m.isSender ? ' sent' : ''}" data-time="${m.createTime || 0}" data-search="${safe(`${m.name || ''} ${m.content || ''} ${m.type}`.toLowerCase())}"><div class="time">${safe(m.datetime)}</div><div class="row">${avatarMarkup}<div class="bubble"><div class="sender">${safe(m.name || (m.isSender ? '我' : '联系人'))}</div>${media}${audio}${quote}<div class="content">${safe(text || (!media && !audio && !quote ? `[${m.type}]` : ''))}</div></div></div></article>`
+      return `<article class="message${m.isSender ? ' sent' : ''}${isPat ? ' system' : ''}" data-time="${m.createTime || 0}" data-search="${safe(`${m.name || ''} ${m.content || ''} ${m.type}`.toLowerCase())}"><div class="time">${safe(m.datetime)}</div><div class="row">${isPat ? '' : avatarMarkup}<div class="bubble"><div class="sender">${isPat ? '' : safe(m.name || (m.isSender ? '我' : '联系人'))}</div>${media}${audio}${quote}<div class="content">${safe(text || (!media && !audio && !quote ? `[${m.type}]` : ''))}</div></div></div></article>`
     })
     .join('')
   return `<!doctype html><html lang="zh-CN"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>${safe(name)} - 聊天记录</title><style>${exportStyles}</style></head><body><main class="page"><header class="toolbar"><div><span class="title">${safe(name)}</span><span class="meta">${messages.length.toLocaleString()} 条消息</span></div><div class="controls"><input id="query" type="search" placeholder="搜索消息..."><input id="point" type="datetime-local"><button id="jump">跳转</button><span class="count" id="count"></span></div></header><section class="scroll" id="messages">${body}</section></main><div class="lightbox" id="lightbox"><img id="lightbox-image" alt="预览"></div><script>(()=>{const all=[...document.querySelectorAll('.message')],q=document.querySelector('#query'),d=document.querySelector('#point'),c=document.querySelector('#count'),box=document.querySelector('#lightbox'),preview=document.querySelector('#lightbox-image');let zoom=1;const updateZoom=()=>preview.style.setProperty('--zoom',zoom);const update=()=>{const term=q.value.trim().toLowerCase(),at=d.value?new Date(d.value).getTime()/1000:0;let n=0;all.forEach(x=>{const ok=(!term||x.dataset.search.includes(term))&&(!at||Number(x.dataset.time)>=at);x.classList.toggle('hidden',!ok);if(ok)n++});c.textContent='共 '+n+' 条'};q.addEventListener('input',update);d.addEventListener('change',update);document.querySelector('#jump').onclick=()=>{const at=d.value?new Date(d.value).getTime()/1000:0;all.find(x=>Number(x.dataset.time)>=at)?.scrollIntoView({behavior:'smooth',block:'center'})};document.querySelectorAll('.media-image').forEach(image=>image.addEventListener('click',()=>{if(image.tagName==='IMG'){preview.src=image.src;zoom=1;updateZoom();box.classList.add('open')}}));preview.addEventListener('wheel',event=>{event.preventDefault();zoom=Math.min(5,Math.max(.5,zoom+(event.deltaY<0?.2:-.2)));updateZoom()},{passive:false});preview.addEventListener('dblclick',()=>{zoom=1;updateZoom()});box.addEventListener('click',event=>{if(event.target===box)box.classList.remove('open')});update()})()</script></body></html>`

src/main/export-service.ts

@@ -81,6 +81,7 @@ async function readAvatarAsset(
 }
 const kindOf = (message: Message): ExportMessageKind => {
   const type = message.contentData?.type
+  if (type === 'system' && message.contentData?.pat) return 'text'
   if (
     type === 'image' ||
     type === 'video' ||

src/main/message-parser.ts

@@ -56,6 +56,7 @@ type SystemContent = {
   type: 'system'
   content: string
   raw?: string
+  pat?: boolean
   recall?: {
     targetId?: string
     targetIds?: string[]

src/main/services/chat-service.ts

@@ -229,12 +229,23 @@ function listSourceMessages(
 
     let contentData: ReturnType<typeof parseMessageContent> | undefined
     let displayType = MSG_TYPE_DICT[msgType] || msg.messageType
+    const isPatMessage = /<patMsg\b|拍了拍|拍一拍/i.test(String(content || ''))
+    if (isPatMessage) {
+      const system = parseMessageContent(content, 10000)
+      const patContent =
+        system.type === 'system'
+          ? { ...system, pat: true }
+          : { type: 'system' as const, content: String(content || '').replace(/<[^>]+>/g, '').trim(), pat: true }
+      contentData = patContent
+      content = patContent.content
+      displayType = '系统消息'
+    }
     const inferredMsgType =
       typeof content === 'string' &&
       /<appmsg\b|<refermsg\b|&lt;appmsg\b|&lt;refermsg\b/i.test(content)
         ? 49
         : msgType
-    if ([3, 42, 43, 47, 48, 49, 50, 10000, 10002].includes(inferredMsgType)) {
+    if (!isPatMessage && [3, 42, 43, 47, 48, 49, 50, 10000, 10002].includes(inferredMsgType)) {
       try {
         const isQuotePayload = /<refermsg\b/i.test(content)
         const hasStickerHints =

src/main/services/recall-archive-service.ts

@@ -408,6 +408,9 @@ export class RecallArchiveMonitor {
   }
 
   handleDatabaseChange(payload: string): void {
+    // Ordinary message inserts are already visible in the main reader. The
+    // archive scan is only needed when the native event indicates a recall.
+    if (!/(recall|revoke|revokemsg|撤回)/i.test(String(payload || ''))) return
     const groups = this.conversationContacts()
     const knownMd5 = new Set(groups.map((contact) => contact.md5.toLowerCase()))
     const payloadTargets = extractChangedConversationMd5(payload).filter((md5) => knownMd5.has(md5))

src/renderer/src/App.tsx

@@ -21,6 +21,7 @@ import { SummaryDateRange, SummaryMessageType } from './utils/group-report'
 import { Contact, Message } from '../../shared/types'
 import { DatabaseConnectionMode, DatabaseConnectionPage } from './components/DatabaseConnectionPage'
 import { ExportWorkspace } from './components/export/ExportWorkspace'
+import type { ExportJobProgress, ExportRequest, ExportTaskRecord } from '../../shared/export'
 
 const SIDEBAR_MIN_WIDTH = 260
 const SIDEBAR_MAX_WIDTH = 380
@@ -39,7 +40,8 @@ interface SelfInfo {
 
 const MAC_KEY_FAQ_URL = 'https://github.com/hicccc77/WeFlow/blob/main/docs/MAC-KEY-FAQ.md'
 const MESSAGE_MONITOR_DEBOUNCE_MS = 8000
-const VIEW_MESSAGE_LIMIT = 600
+const MESSAGE_PAGE_SIZE = 100
+const EXPORT_PREVIEW_LIMIT = 20
 const getMessageIdentity = (message: Message): string => {
   if (message.localId) return `local:${message.localId}`
   if (message.id) return `id:${message.id}`
@@ -133,6 +135,12 @@ const sortMessagesChronologically = (items: Message[]): Message[] =>
     return getMessageIdentity(left).localeCompare(getMessageIdentity(right))
   })
 
+const mergeMessagePages = (older: Message[], current: Message[]): Message[] => {
+  const merged = new Map<string, Message>()
+  for (const message of [...older, ...current]) merged.set(getMessageIdentity(message), message)
+  return sortMessagesChronologically(Array.from(merged.values()))
+}
+
 function App(): React.ReactElement {
   const [isAuthenticated, setIsAuthenticated] = useState(false)
   const [isDatabaseConnected, setIsDatabaseConnected] = useState(false)
@@ -173,6 +181,14 @@ function App(): React.ReactElement {
   })
   const [selfInfo, setSelfInfo] = useState<SelfInfo | null>(null)
   const [isNativeMonitorActive, setIsNativeMonitorActive] = useState(false)
+  const [exportTasks, setExportTasks] = useState<ExportTaskRecord[]>(() => {
+    try {
+      const stored = JSON.parse(localStorage.getItem('wxe_export_tasks') || '[]')
+      return Array.isArray(stored) ? (stored as ExportTaskRecord[]).slice(0, 20) : []
+    } catch {
+      return []
+    }
+  })
   const [bootState, setBootState] = useState<'loading' | 'connecting' | 'login'>('loading')
   const [autoConnectSource, setAutoConnectSource] = useState<'env' | 'saved' | null>(null)
   const [startupProgress, setStartupProgress] = useState<StartupProgress | null>(null)
@@ -217,6 +233,80 @@ function App(): React.ReactElement {
   })
   const lastCapturedReportKeyRef = React.useRef('')
 
+  React.useEffect(() => {
+    const unsubscribe = window.api.onExportProgress((progress: ExportJobProgress) => {
+      setExportTasks((current) =>
+        current.map((task) => {
+          if (task.jobId !== progress.jobId) return task
+          const status =
+            progress.phase === 'completed'
+              ? 'completed'
+              : progress.phase === 'cancelled'
+                ? 'cancelled'
+                : progress.phase === 'failed'
+                  ? 'failed'
+                  : 'running'
+          return { ...task, status, progress }
+        })
+      )
+    })
+    return unsubscribe
+  }, [])
+
+  React.useEffect(() => {
+    localStorage.setItem('wxe_export_tasks', JSON.stringify(exportTasks.slice(0, 20)))
+  }, [exportTasks])
+
+  const handleStartExport = async (request: ExportRequest): Promise<import('../../shared/export').ExportResult> => {
+    const task: ExportTaskRecord = {
+      jobId: request.jobId,
+      contactId: request.userMd5,
+      contactName: request.name,
+      format: request.format,
+      status: 'running',
+      progress: { jobId: request.jobId, phase: 'reading', processed: 0, percent: 0 },
+      createdAt: Date.now()
+    }
+    setExportTasks((current) => [task, ...current.filter((item) => item.jobId !== task.jobId)].slice(0, 20))
+    const result = await window.api.startExport(request)
+    setExportTasks((current) =>
+      current.map((item) =>
+        item.jobId === request.jobId
+          ? result.success
+            ? {
+                ...item,
+                status: 'completed',
+                progress: {
+                  ...item.progress,
+                  phase: 'completed',
+                  processed: result.messageCount ?? item.progress.processed,
+                  total: result.messageCount ?? item.progress.total,
+                  percent: 100,
+                  outputPath: result.outputPath
+                }
+              }
+            : {
+                ...item,
+                status: 'failed',
+                progress: { ...item.progress, phase: 'failed', error: result.error }
+              }
+          : item
+      )
+    )
+    return result
+  }
+
+  const handleCancelExport = async (jobId: string): Promise<void> => {
+    await window.api.cancelExport(jobId)
+    setExportTasks((current) =>
+      current.map((task) =>
+        task.jobId === jobId
+          ? { ...task, status: 'cancelled', progress: { ...task.progress, phase: 'cancelled' } }
+          : task
+      )
+    )
+  }
+
   const loadGeneratedReports = React.useCallback(async (): Promise<void> => {
     try {
       const result = await window.api.listGeneratedReports()
@@ -715,7 +805,7 @@ function App(): React.ReactElement {
       setMessages(
         applyGroupMemberMeta(
           contact,
-          mergeSyntheticMessages(contact, cachedMsgs.slice(-VIEW_MESSAGE_LIMIT))
+          mergeSyntheticMessages(contact, cachedMsgs.slice(-MESSAGE_PAGE_SIZE))
         )
       )
     } else {
@@ -724,7 +814,7 @@ function App(): React.ReactElement {
     await waitForPaint()
     try {
       const msgs = await window.api.getMessages(contact.md5, startTime, endTime, {
-        limit: VIEW_MESSAGE_LIMIT
+        limit: MESSAGE_PAGE_SIZE
       })
       if (selectedContactMd5Ref.current !== contact.md5) return
       const cachedMessages = applyGroupMemberMeta(contact, mergeSyntheticMessages(contact, msgs))
@@ -748,6 +838,46 @@ function App(): React.ReactElement {
     }
   }
 
+  const handleLoadOlderMessages = async (): Promise<void> => {
+    const contact = selectedContact
+    if (!contact || isMessagesLoading || messages.length === 0) return
+    const oldestTime = messages[0]?.createTime
+    if (!oldestTime) return
+    const { startTime } = getDateRangeParams(dateRange)
+    if (startTime && oldestTime <= startTime) return
+
+    setIsMessagesLoading(true)
+    try {
+      const olderMessages = await window.api.getMessages(
+        contact.md5,
+        startTime,
+        oldestTime - 1,
+        { limit: MESSAGE_PAGE_SIZE }
+      )
+      if (selectedContactMd5Ref.current !== contact.md5) return
+      setMessages((current) =>
+        applyGroupMemberMeta(contact, mergeSyntheticMessages(contact, mergeMessagePages(olderMessages, current)))
+      )
+    } catch (error) {
+      console.warn('[Messages] older page load failed:', error)
+    } finally {
+      if (selectedContactMd5Ref.current === contact.md5) setIsMessagesLoading(false)
+    }
+  }
+
+  const loadExportPreview = async (contact: Contact): Promise<void> => {
+    setSelectedContact(contact)
+    selectedContactMd5Ref.current = contact.md5
+    try {
+      const previewMessages = await window.api.getMessages(contact.md5, undefined, undefined, {
+        limit: EXPORT_PREVIEW_LIMIT
+      })
+      if (selectedContactMd5Ref.current === contact.md5) setMessages(previewMessages)
+    } catch (error) {
+      console.warn('[Export] preview load failed:', error)
+    }
+  }
+
   const handleDateRangeChange = (range: string): void => {
     setDateRange(range)
     if (selectedContact) {
@@ -759,13 +889,13 @@ function App(): React.ReactElement {
           setMessages(
             applyGroupMemberMeta(
               selectedContact,
-              mergeSyntheticMessages(selectedContact, cachedMessages.slice(-VIEW_MESSAGE_LIMIT))
+              mergeSyntheticMessages(selectedContact, cachedMessages.slice(-MESSAGE_PAGE_SIZE))
             )
           )
         })
       setIsMessagesLoading(true)
       window.api
-        .getMessages(selectedContact.md5, startTime, endTime, { limit: VIEW_MESSAGE_LIMIT })
+        .getMessages(selectedContact.md5, startTime, endTime, { limit: MESSAGE_PAGE_SIZE })
         .then((nextMessages) => {
           setMessages(
             applyGroupMemberMeta(
@@ -803,7 +933,7 @@ function App(): React.ReactElement {
           contactMd5,
           range.startTime,
           range.endTime,
-          { limit: VIEW_MESSAGE_LIMIT }
+          { limit: MESSAGE_PAGE_SIZE }
         )
         const nextMessages = applyGroupMemberMeta(
           selectedContact,
@@ -828,7 +958,10 @@ function App(): React.ReactElement {
       }
     }
 
-    const unsubscribe = window.api.onWcdbChange(() => {
+    const unsubscribe = window.api.onWcdbChange(({ json }) => {
+      const eventText = String(json || '').toLowerCase()
+      const targetIds = [contactMd5, selectedContact.m_nsUsrName].filter(Boolean).map((value) => value.toLowerCase())
+      if (!targetIds.some((targetId) => eventText.includes(targetId))) return
       if (refreshTimer) window.clearTimeout(refreshTimer)
       refreshTimer = window.setTimeout(() => {
         refreshTimer = null
@@ -870,6 +1003,8 @@ function App(): React.ReactElement {
 
   const handlePageChange = (page: AppPage): void => {
     setActivePage(page)
+    if (page === 'archive' && selectedContact) void handleSelectContact(selectedContact)
+    if (page === 'export' && selectedContact) void loadExportPreview(selectedContact)
     if (page === 'settings') setSettingsCategory('account-database')
     if (page === 'report' && isGroupContact(selectedContact) && !reportSourceContact) {
       setReportSourceContact(selectedContact)
@@ -1083,6 +1218,7 @@ function App(): React.ReactElement {
         onContentFilterChange={setContentFilter}
         onRefresh={() => selectedContact && handleSelectContact(selectedContact)}
         onRefreshData={loadContacts}
+        onLoadOlderMessages={() => void handleLoadOlderMessages()}
         onCreateGroupReport={handleOpenReportWorkspace}
         isAiLoading={reportGeneration.isGenerating}
       />
@@ -1211,8 +1347,11 @@ function App(): React.ReactElement {
             previewMessages={messages}
             selfInfo={selfInfo}
             dbReady={isDatabaseConnected}
-            onSelectContact={handleSelectContact}
+            onSelectContact={loadExportPreview}
             onOpenSettings={openSettings}
+            exportTasks={exportTasks}
+            onStartExport={handleStartExport}
+            onCancelExport={handleCancelExport}
           />
         )
     }

src/renderer/src/assets/main.css

@@ -482,10 +482,22 @@ body {
 .conversation-list {
   flex: 1;
   min-height: 0;
-  overflow-y: auto;
+  overflow: auto;
   padding: 8px 8px 12px;
 }
 
+.conversation-virtual-content {
+  position: relative;
+  width: 100%;
+}
+
+.conversation-virtual-row {
+  position: absolute;
+  top: 0;
+  right: 0;
+  left: 0;
+}
+
 .conversation-section + .conversation-section {
   margin-top: 6px;
 }
@@ -541,9 +553,25 @@ body {
 }
 
 .conversation-section-list {
-  display: flex;
+  position: relative;
-  flex-direction: column;
+  overflow: visible;
-  gap: 2px;
+}
+
+.export-config-scroll > .export-section:not(.export-format-top):has(.export-format-grid) {
+  display: none;
+}
+
+.conversation-section-virtual-content {
+  position: relative;
+  width: 100%;
+}
+
+.conversation-section-virtual-row {
+  position: absolute;
+  top: 0;
+  right: 0;
+  left: 0;
+  height: 58px;
 }
 
 .conversation-section-empty {
@@ -4702,6 +4730,17 @@ body {
   overflow: hidden;
   background: #fafbfa;
 }
+
+.settings-page-panel {
+  display: none;
+  min-width: 0;
+  min-height: 0;
+  flex: 1 1 auto;
+}
+
+.settings-page-panel.active {
+  display: flex;
+}
 .settings-sidebar {
   width: 294px;
   flex: 0 0 294px;
@@ -8209,6 +8248,25 @@ body {
   height: 16px;
   accent-color: var(--wxex-brand);
 }
+.export-check-row.unsupported {
+  color: var(--wxex-text-muted);
+  cursor: not-allowed;
+}
+.export-check-row.unsupported input {
+  cursor: not-allowed;
+}
+.export-unsupported-hint {
+  display: inline-grid;
+  width: 16px;
+  height: 16px;
+  place-items: center;
+  border: 1px solid #c57923;
+  border-radius: 50%;
+  color: #a85e13;
+  font-size: 11px;
+  font-weight: 700;
+  line-height: 1;
+}
 .export-name-mode-grid {
   display: flex;
   gap: 8px;
@@ -8440,11 +8498,16 @@ body {
   display: flex;
   align-items: flex-start;
   gap: 8px;
-  margin-bottom: 15px;
+  width: min(100%, 620px);
+  margin: 0 auto 15px;
 }
 .export-preview-message.mine {
   flex-direction: row-reverse;
 }
+.export-preview-message.system {
+  justify-content: center;
+  flex-direction: row;
+}
 .export-preview-avatar {
   width: 30px;
   height: 30px;
@@ -8464,6 +8527,23 @@ body {
 .export-preview-message.mine .export-preview-bubble {
   background: #95ec69;
 }
+.export-preview-message.system .export-preview-avatar {
+  display: none;
+}
+.export-preview-message.system .export-preview-bubble {
+  max-width: 92%;
+  padding: 5px 10px;
+  border: 0;
+  border-radius: 5px;
+  background: #e9eeeb;
+  color: var(--wxex-text-muted);
+  font-size: 11px;
+  text-align: center;
+  box-shadow: none;
+}
+.export-preview-message.system .export-preview-bubble small {
+  display: none;
+}
 .export-preview-bubble small {
   display: block;
   margin-bottom: 3px;
@@ -8477,6 +8557,95 @@ body {
   padding: 18px;
   border-top: 1px solid var(--wxex-border);
 }
+
+.export-task-center-button {
+  align-self: flex-start;
+  margin: 0 0 12px;
+  border: 1px solid var(--wxex-border);
+  border-radius: 6px;
+  background: var(--wxex-bg-elevated);
+  color: var(--wxex-brand);
+  cursor: pointer;
+  padding: 7px 11px;
+  font: 600 12px/18px var(--wxex-font);
+}
+
+.export-task-center {
+  margin: 0 0 18px;
+  padding: 12px;
+  border: 1px solid var(--wxex-border);
+  border-radius: 8px;
+  background: var(--wxex-bg-elevated);
+}
+
+.export-task-row {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto auto;
+  align-items: center;
+  gap: 12px;
+  padding: 9px 0;
+  border-top: 1px solid var(--wxex-border);
+  color: var(--wxex-text-secondary);
+  font-size: 12px;
+}
+
+.export-task-row:first-of-type {
+  margin-top: 8px;
+}
+
+.export-task-row span:first-child {
+  display: grid;
+  gap: 2px;
+  min-width: 0;
+}
+
+.export-task-row strong,
+.export-task-row small {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.export-task-row strong {
+  color: var(--wxex-text-primary);
+}
+
+.export-task-progress {
+  position: relative;
+  width: 110px;
+  height: 6px;
+  overflow: hidden;
+  border-radius: 999px;
+  background: var(--wxex-border);
+}
+
+.export-task-progress i {
+  display: block;
+  height: 100%;
+  border-radius: inherit;
+  background: var(--wxex-brand);
+}
+
+.export-task-progress b {
+  position: absolute;
+  top: 10px;
+  right: 0;
+  color: var(--wxex-text-muted);
+  font-size: 10px;
+  font-weight: 500;
+}
+
+.export-task-row button {
+  border: 1px solid var(--wxex-border);
+  border-radius: 5px;
+  background: transparent;
+  color: var(--wxex-text-secondary);
+  cursor: pointer;
+  padding: 4px 8px;
+}
+.export-preview-panel .export-preview-stats:not(.export-preview-real-stats) {
+  display: none;
+}
 .export-preview-stats span,
 .export-complete-summary span {
   display: flex;

src/renderer/src/components/ChatWindow.tsx

@@ -15,6 +15,7 @@ interface ChatWindowProps {
   onContentFilterChange?: (keyword: string) => void
   onRefresh?: () => void
   onRefreshData?: () => void
+  onLoadOlderMessages?: () => void
   onCreateGroupReport?: () => void
   isAiLoading?: boolean
 }
@@ -66,6 +67,7 @@ const ChatWindow: React.FC<ChatWindowProps> = ({
   onContentFilterChange,
   onRefresh,
   onRefreshData,
+  onLoadOlderMessages,
   onCreateGroupReport,
   isAiLoading = false
 }) => {
@@ -97,9 +99,10 @@ const ChatWindow: React.FC<ChatWindowProps> = ({
   }, [])
 
   useEffect(() => {
+    if (!isAtLatest) return
     const frame = window.requestAnimationFrame(() => scrollToBottom())
     return () => window.cancelAnimationFrame(frame)
-  }, [messages, scrollToBottom])
+  }, [isAtLatest, messages, scrollToBottom])
 
   const openImagePreview = (imageUrl: string): void => {
     setPreviewImage(imageUrl)
@@ -211,6 +214,7 @@ const ChatWindow: React.FC<ChatWindowProps> = ({
         listRef={messageListRef}
         bottomRef={messagesEndRef}
         onScroll={handleMessageListScroll}
+        onReachTop={onLoadOlderMessages}
         onImageClick={openImagePreview}
       />
       <ChatStatusBar

src/renderer/src/components/chat/MessageList.tsx

@@ -14,6 +14,7 @@ interface MessageListProps {
   listRef: React.RefObject<HTMLDivElement | null>
   bottomRef: React.RefObject<HTMLDivElement | null>
   onScroll: (event: React.UIEvent<HTMLDivElement>) => void
+  onReachTop?: () => void
   onImageClick: (imageUrl: string) => void
 }
 
@@ -27,6 +28,7 @@ export function MessageList({
   listRef,
   bottomRef,
   onScroll,
+  onReachTop,
   onImageClick
 }: MessageListProps): React.ReactElement {
   const groups = React.useMemo(() => buildMessageGroups(messages), [messages])
@@ -41,8 +43,13 @@ export function MessageList({
   })
   const virtualItems = virtualizer.getVirtualItems()
 
+  const handleScroll = (event: React.UIEvent<HTMLDivElement>): void => {
+    onScroll(event)
+    if (event.currentTarget.scrollTop < 120) onReachTop?.()
+  }
+
   return (
-    <div className="message-list wechat-message-list" ref={listRef} onScroll={onScroll}>
+    <div className="message-list wechat-message-list" ref={listRef} onScroll={handleScroll}>
       {isLoadingMessages && <div className="message-loading-pill">正在加载聊天记录...</div>}
       {hiddenMessageCount > 0 && (
         <div className="wechat-system-message-row">

src/renderer/src/components/conversation/ConversationSection.tsx

@@ -1,4 +1,5 @@
-import React from 'react'
+import React, { useEffect, useLayoutEffect, useRef, useState } from 'react'
+import { useVirtualizer } from '@tanstack/react-virtual'
 import { Contact } from '../../../../shared/types'
 import { ConversationItem } from './ConversationItem'
 
@@ -29,6 +30,31 @@ export function ConversationSection({
   onToggle,
   onSelectContact
 }: ConversationSectionProps): React.ReactElement {
+  const listRef = useRef<HTMLDivElement>(null)
+  const [scrollMargin, setScrollMargin] = useState(0)
+  useLayoutEffect(() => {
+    const updateMargin = (): void => {
+      const list = listRef.current
+      const scrollElement = document.querySelector<HTMLDivElement>('.conversation-list')
+      if (!list || !scrollElement) return
+      setScrollMargin(list.getBoundingClientRect().top - scrollElement.getBoundingClientRect().top)
+    }
+    updateMargin()
+    window.addEventListener('resize', updateMargin)
+    return () => window.removeEventListener('resize', updateMargin)
+  }, [contacts.length, expanded])
+  const virtualizer = useVirtualizer({
+    count: expanded ? contacts.length : 0,
+    getScrollElement: () => document.querySelector<HTMLDivElement>('.conversation-list'),
+    scrollMargin,
+    estimateSize: () => 58,
+    overscan: 8
+  })
+
+  useEffect(() => {
+    if (expanded) virtualizer.measure()
+  }, [contacts.length, expanded, virtualizer])
+
   return (
     <section className="conversation-section">
       <button type="button" className="conversation-section-header" onClick={onToggle}>
@@ -40,16 +66,29 @@ export function ConversationSection({
         </span>
       </button>
       {expanded && (
-        <div className="conversation-section-list">
+        <div ref={listRef} className="conversation-section-list">
           {contacts.length > 0 ? (
-            contacts.map((contact) => (
+            <div
-              <ConversationItem
+              className="conversation-section-virtual-content"
-                key={contact.md5}
+              style={{ height: `${virtualizer.getTotalSize()}px` }}
-                contact={contact}
+            >
-                active={selectedContact?.md5 === contact.md5}
+              {virtualizer.getVirtualItems().map((virtualItem) => {
-                onSelect={onSelectContact}
+                const contact = contacts[virtualItem.index]
-              />
+                return (
-            ))
+                  <div
+                    key={virtualItem.key}
+                    className="conversation-section-virtual-row"
+                    style={{ transform: `translateY(${virtualItem.start - scrollMargin}px)` }}
+                  >
+                    <ConversationItem
+                      contact={contact}
+                      active={selectedContact?.md5 === contact.md5}
+                      onSelect={onSelectContact}
+                    />
+                  </div>
+                )
+              })}
+            </div>
           ) : (
             <div className="conversation-section-empty">{emptyText}</div>
           )}

src/renderer/src/components/conversation/ConversationSidebar.tsx

@@ -1,7 +1,8 @@
-import React, { useState } from 'react'
+import React, { useMemo, useRef, useState } from 'react'
+import { useVirtualizer } from '@tanstack/react-virtual'
 import { Contact } from '../../../../shared/types'
 import { AccountSummary } from '../account/AccountSummary'
-import { ConversationSection } from './ConversationSection'
+import { ConversationItem } from './ConversationItem'
 import { ConversationSidebarHeader } from './ConversationSidebarHeader'
 
 interface SelfInfo {
@@ -25,6 +26,11 @@ export interface ConversationSidebarProps {
   onOpenSettings: () => void
 }
 
+type SectionName = 'groups' | 'contacts'
+type ConversationRow =
+  | { kind: 'header'; id: string; title: string; count: number; section: SectionName }
+  | { kind: 'contact'; id: string; contact: Contact }
+
 export function ConversationSidebar({
   contacts,
   selectedContact,
@@ -38,10 +44,34 @@ export function ConversationSidebar({
   onOpenSettings
 }: ConversationSidebarProps): React.ReactElement {
   const [searchTerm, setSearchTerm] = useState('')
-  const [expandedSection, setExpandedSection] = useState<'groups' | 'contacts'>('groups')
+  const [expandedSections, setExpandedSections] = useState<Record<SectionName, boolean>>({
+    groups: true,
+    contacts: false
+  })
+  const listRef = useRef<HTMLDivElement>(null)
 
   const groups = contacts.filter((contact) => contact.type === 'group')
   const users = contacts.filter((contact) => contact.type === 'user')
+  const rows = useMemo<ConversationRow[]>(
+    () => [
+      { kind: 'header', id: 'groups-header', title: '群聊', count: groups.length, section: 'groups' },
+      ...(expandedSections.groups
+        ? groups.map((contact) => ({ kind: 'contact' as const, id: `group-${contact.md5}`, contact }))
+        : []),
+      { kind: 'header', id: 'contacts-header', title: '联系人', count: users.length, section: 'contacts' },
+      ...(expandedSections.contacts
+        ? users.map((contact) => ({ kind: 'contact' as const, id: `user-${contact.md5}`, contact }))
+        : [])
+    ],
+    [expandedSections.contacts, expandedSections.groups, groups, users]
+  )
+  const virtualizer = useVirtualizer({
+    count: rows.length,
+    getScrollElement: () => listRef.current,
+    estimateSize: (index) => (rows[index]?.kind === 'header' ? 38 : 58),
+    getItemKey: (index) => rows[index]?.id || index,
+    overscan: 10
+  })
 
   const handleSearchChange = (term: string): void => {
     setSearchTerm(term)
@@ -57,25 +87,47 @@ export function ConversationSidebar({
         onSearchChange={handleSearchChange}
         onDateRangeChange={onDateRangeChange}
       />
-      <div className="conversation-list" aria-label="会话列表">
+      <div ref={listRef} className="conversation-list" aria-label="会话列表">
-        <ConversationSection
+        <div className="conversation-virtual-content" style={{ height: `${virtualizer.getTotalSize()}px` }}>
-          title="群聊"
+          {virtualizer.getVirtualItems().map((virtualItem) => {
-          contacts={groups}
+            const row = rows[virtualItem.index]
-          expanded={expandedSection === 'groups'}
+            if (!row) return null
-          selectedContact={selectedContact}
+            if (row.kind === 'header') {
-          emptyText="暂无群聊"
+              const expanded = expandedSections[row.section]
-          onToggle={() => setExpandedSection('groups')}
+              return (
-          onSelectContact={onSelectContact}
+                <button
-        />
+                  key={virtualItem.key}
-        <ConversationSection
+                  type="button"
-          title="联系人"
+                  className="conversation-section-header conversation-virtual-row"
-          contacts={users}
+                  style={{ transform: `translateY(${virtualItem.start}px)`, height: `${virtualItem.size}px` }}
-          expanded={expandedSection === 'contacts'}
+                  onClick={() =>
-          selectedContact={selectedContact}
+                    setExpandedSections((current) => ({ ...current, [row.section]: !current[row.section] }))
-          emptyText="暂无联系人"
+                  }
-          onToggle={() => setExpandedSection('contacts')}
+                >
-          onSelectContact={onSelectContact}
+                  <span className="conversation-section-chevron" aria-hidden="true">
-        />
+                    <svg viewBox="0 0 16 16" focusable="false">
+                      <path d={expanded ? 'M4 6l4 4 4-4' : 'M6 4l4 4-4 4'} />
+                    </svg>
+                  </span>
+                  <span className="conversation-section-title">{row.title} ({row.count})</span>
+                </button>
+              )
+            }
+            return (
+              <div
+                key={virtualItem.key}
+                className="conversation-virtual-row"
+                style={{ transform: `translateY(${virtualItem.start}px)`, height: `${virtualItem.size}px` }}
+              >
+                <ConversationItem
+                  contact={row.contact}
+                  active={selectedContact?.md5 === row.contact.md5}
+                  onSelect={onSelectContact}
+                />
+              </div>
+            )
+          })}
+        </div>
       </div>
       <div className="conversation-sidebar-account">
         <AccountSummary selfInfo={selfInfo} dbReady={dbReady} onClick={onOpenSettings} />

src/renderer/src/components/export/ExportWorkspace.tsx

@@ -5,6 +5,7 @@ import type {
   ExportMessageKind,
   ExportNameMode
 } from '../../../../shared/export'
+import type { ExportRequest, ExportResult, ExportTaskRecord } from '../../../../shared/export'
 
 type ExportRange = 'today' | 'threeDays' | 'sevenDays' | 'custom'
 type ExportFormat = 'html' | 'csv' | 'json' | 'markdown'
@@ -34,6 +35,9 @@ interface ExportWorkspaceProps {
   dbReady: boolean
   onSelectContact: (contact: Contact) => void
   onOpenSettings: () => void
+  exportTasks: ExportTaskRecord[]
+  onStartExport: (request: ExportRequest) => Promise<ExportResult>
+  onCancelExport: (jobId: string) => Promise<void>
 }
 
 const messageKinds = [
@@ -53,6 +57,7 @@ const formatLabels: Record<ExportFormat, { label: string; hint?: string }> = {
   json: { label: 'JSON' },
   markdown: { label: 'Markdown' }
 }
+const formatOrder: ExportFormat[] = ['csv', 'html', 'json', 'markdown']
 
 function displayName(contact: Contact | null): string {
   return contact?.m_nsNickName || contact?.m_nsUsrName || '未选择会话'
@@ -73,7 +78,10 @@ export function ExportWorkspace({
   selfInfo,
   dbReady,
   onSelectContact,
-  onOpenSettings
+  onOpenSettings,
+  exportTasks,
+  onStartExport,
+  onCancelExport
 }: ExportWorkspaceProps): React.ReactElement {
   const [contactFilter, setContactFilter] = useState('')
   const [contactType, setContactType] = useState<'all' | 'group' | 'user'>('all')
@@ -88,12 +96,13 @@ export function ExportWorkspace({
   const [preferOriginal, setPreferOriginal] = useState(true)
   const [fallbackThumbnail, setFallbackThumbnail] = useState(true)
   const [keepMissing, setKeepMissing] = useState(false)
-  const [format, setFormat] = useState<ExportFormat>('html')
+  const [format, setFormat] = useState<ExportFormat>('csv')
   const [zip, setZip] = useState(false)
   const [fileName, setFileName] = useState('')
   const [status, setStatus] = useState<ExportStatus>('idle')
   const [jobId, setJobId] = useState('')
   const [progress, setProgress] = useState<ExportJobProgress | null>(null)
+  const [taskCenterOpen, setTaskCenterOpen] = useState(false)
 
   const filteredContacts = useMemo(() => {
     const keyword = contactFilter.trim().toLowerCase()
@@ -107,8 +116,17 @@ export function ExportWorkspace({
   }, [contactFilter, contactType, contacts])
 
   const activeContact = selectedContact || filteredContacts[0] || contacts[0] || null
+  const currentTask = exportTasks.find((task) => task.contactId === activeContact?.md5)
+  const taskCount = exportTasks.filter((task) => task.status === 'running').length
   const activeName = displayName(activeContact)
   const preview = previewMessages.slice(-20)
+  const previewMediaCount = preview.filter((message) =>
+    ['image', 'video', 'voice', 'sticker'].includes(message.contentData?.type || '')
+  ).length
+  const previewBytes = preview.reduce(
+    (total, message) => total + (message.content?.length || 0) * 2 + (message.img ? 1024 : 0),
+    0
+  )
   const outputName = fileName.trim() || `${activeName}_聊天档案`
   const nameOptions: { value: ExportNameMode; label: string }[] =
     activeContact?.type === 'group'
@@ -156,21 +174,31 @@ export function ExportWorkspace({
     return map
   }, [activeContact, groupMembers, selfInfo])
 
+  const previewName = (message: Message): string =>
+    (message.senderId && nameMap[message.senderId]) ||
+    message.name ||
+    (message.isSender ? selfInfo?.nickname : undefined) ||
+    (message.isSender ? '我' : '联系人')
+  const previewAvatar = (message: Message): string | undefined =>
+    (message.senderId && avatarUrls[message.senderId]) ||
+    message.img ||
+    (message.isSender ? selfInfo?.avatar : undefined)
+  const previewItems = preview.map((message) => ({
+    ...message,
+    name: previewName(message),
+    img: previewAvatar(message)
+  }))
+
   React.useEffect(() => {
     setNameMode(activeContact?.type === 'group' ? 'groupNickname' : 'remark')
-    let cancelled = false
+    setGroupMembers([])
-    if (!activeContact || activeContact.type !== 'group') {
+    if (!activeContact || activeContact.type !== 'group') return
-      setGroupMembers([])
+    const timer = window.setTimeout(() => {
-      return () => {
+      void window.api.getGroupSnapshot(activeContact.md5).then((snapshot) => {
-        cancelled = true
+        setGroupMembers((snapshot?.members || []) as GroupMemberName[])
-      }
+      })
-    }
+    }, 300)
-    void window.api.getGroupSnapshot(activeContact.md5).then((snapshot) => {
+    return () => window.clearTimeout(timer)
-      if (!cancelled) setGroupMembers((snapshot?.members || []) as GroupMemberName[])
-    })
-    return () => {
-      cancelled = true
-    }
   }, [activeContact])
 
   const toggleKind = (value: string): void => {
@@ -188,6 +216,24 @@ export function ExportWorkspace({
     setJobId(nextJobId)
     setProgress(null)
     setStatus('running')
+    let exportNameMap = nameMap
+    let exportAvatarUrls = avatarUrls
+    if (activeContact.type === 'group') {
+      const snapshot = await window.api.getGroupSnapshot(activeContact.md5)
+      const members = (snapshot?.members || []) as GroupMemberName[]
+      setGroupMembers(members)
+      exportNameMap = { ...nameMap }
+      exportAvatarUrls = { ...avatarUrls }
+      for (const member of members) {
+        exportNameMap[member.wxid] =
+          nameMode === 'groupNickname'
+            ? member.groupNickname || member.nickname || member.wxid
+            : nameMode === 'remark'
+              ? member.remark || member.wechatNickname || member.wxid
+              : member.wechatNickname || member.wxid
+        if (member.avatar) exportAvatarUrls[member.wxid] = member.avatar
+      }
+    }
     const now = new Date()
     const endOfToday = new Date(now.getFullYear(), now.getMonth(), now.getDate() + 1)
     const days = range === 'today' ? 1 : range === 'threeDays' ? 3 : range === 'sevenDays' ? 7 : 0
@@ -213,13 +259,25 @@ export function ExportWorkspace({
       kinds: Array.from(selectedKinds) as ExportMessageKind[],
       includeMedia,
       includeAvatars,
-      avatarUrls,
+      avatarUrls: exportAvatarUrls,
       nameMode,
-      nameMap,
+      nameMap: exportNameMap,
       zip
     }
-    const result = await window.api.startExport(request)
+    const result = await onStartExport(request)
-    if (!result.success && result.error !== '已取消') setStatus('idle')
+    if (result.success) {
+      setProgress((current) => ({
+        ...(current || { jobId: nextJobId, processed: result.messageCount || 0 }),
+        phase: 'completed',
+        processed: result.messageCount ?? current?.processed ?? 0,
+        total: result.messageCount ?? current?.total,
+        percent: 100,
+        outputPath: result.outputPath
+      }))
+      setStatus('completed')
+    } else if (result.error !== '已取消') {
+      setStatus('idle')
+    }
   }
 
   React.useEffect(
@@ -233,6 +291,19 @@ export function ExportWorkspace({
     [jobId]
   )
 
+  React.useEffect(() => {
+    if (!currentTask) return
+    setJobId(currentTask.jobId)
+    setProgress(currentTask.progress)
+    setStatus(
+      currentTask.status === 'running'
+        ? 'running'
+        : currentTask.status === 'completed'
+          ? 'completed'
+          : 'idle'
+    )
+  }, [currentTask])
+
   const targetPath =
     format === 'html'
       ? zip
@@ -318,6 +389,21 @@ export function ExportWorkspace({
 
       <main className="export-config-panel">
         <div className="export-config-scroll">
+          <button type="button" className="export-task-center-button" onClick={() => setTaskCenterOpen((open) => !open)}>
+            任务中心{taskCount > 0 ? ` (${taskCount})` : ''}
+          </button>
+          {taskCenterOpen && (
+            <section className="export-task-center">
+              <div className="export-section-heading"><h3>导出任务</h3><span>{exportTasks.length} 条记录</span></div>
+              {exportTasks.length === 0 ? <p>暂无导出记录</p> : exportTasks.map((task) => (
+                <div className="export-task-row" key={task.jobId}>
+                  <span><strong>{task.contactName}</strong><small>{task.format.toUpperCase()} · {task.progress.phase}</small></span>
+                  <span className="export-task-progress"><i style={{ width: `${task.progress.percent ?? 0}%` }} /><b>{task.progress.percent ?? 0}%</b></span>
+                  {task.status === 'running' && <button type="button" onClick={() => void onCancelExport(task.jobId)}>取消</button>}
+                </div>
+              ))}
+            </section>
+          )}
           <header className="export-config-header">
             <span className="export-chat-avatar">
               {activeContact?.avatar ? (
@@ -335,6 +421,29 @@ export function ExportWorkspace({
             </span>
           </header>
 
+          <section className="export-section export-format-top">
+            <h3>导出格式</h3>
+            <div className="export-format-grid">
+              {formatOrder.map((value) => (
+                <button key={value} type="button" className={format === value ? 'active' : ''} onClick={() => setFormat(value)}>
+                  <strong>{formatLabels[value].label}</strong>
+                  {formatLabels[value].hint && <small>{formatLabels[value].hint}</small>}
+                </button>
+              ))}
+            </div>
+            <p className="export-helper-text">CSV 默认最快；HTML 会包含图片、引用和其他媒体，导出时间可能较长。</p>
+            {format === 'html' && (
+              <div className="export-html-options">
+                <label>
+                  <input type="radio" name="html-package-top" checked={!zip} onChange={() => setZip(false)} /> HTML 资源包
+                </label>
+                <label>
+                  <input type="radio" name="html-package-top" checked={zip} onChange={() => setZip(true)} /> HTML 资源包并压缩为 ZIP
+                </label>
+              </div>
+            )}
+          </section>
+
           <section className="export-section">
             <div className="export-section-heading">
               <h3>时间范围</h3>
@@ -396,13 +505,19 @@ export function ExportWorkspace({
             <h3>消息内容</h3>
             <div className="export-kind-grid">
               {messageKinds.map(([value, label]) => (
-                <label key={value} className="export-check-row">
+                <label key={value} className={`export-check-row ${value === 'video' ? 'unsupported' : ''}`}>
                   <input
                     type="checkbox"
-                    checked={selectedKinds.has(value)}
+                    checked={value !== 'video' && selectedKinds.has(value)}
+                    disabled={value === 'video'}
                     onChange={() => toggleKind(value)}
                   />
                   <span>{label}</span>
+                  {value === 'video' && (
+                    <span className="export-unsupported-hint" title="当前版本暂不支持视频导出" aria-label="当前版本暂不支持视频导出">
+                      !
+                    </span>
+                  )}
                 </label>
               ))}
             </div>
@@ -431,16 +546,17 @@ export function ExportWorkspace({
               <span>包含图片、视频、语音及动态表情</span>
               <input
                 type="checkbox"
-                checked={includeMedia}
+                  checked={includeMedia}
+                  disabled={format !== 'html'}
                 onChange={(event) => setIncludeMedia(event.target.checked)}
               />
             </label>
-            <div className={`export-media-options ${includeMedia ? '' : 'disabled'}`}>
+            <div className={`export-media-options ${includeMedia && format === 'html' ? '' : 'disabled'}`}>
               <label className="export-check-row">
                 <input
                   type="checkbox"
                   checked={preferOriginal}
-                  disabled={!includeMedia}
+                  disabled={!includeMedia || format !== 'html'}
                   onChange={(event) => setPreferOriginal(event.target.checked)}
                 />
                 <span>优先导出原图</span>
@@ -449,7 +565,7 @@ export function ExportWorkspace({
                 <input
                   type="checkbox"
                   checked={fallbackThumbnail}
-                  disabled={!includeMedia}
+                  disabled={!includeMedia || format !== 'html'}
                   onChange={(event) => setFallbackThumbnail(event.target.checked)}
                 />
                 <span>原图缺失时使用缩略图</span>
@@ -458,12 +574,13 @@ export function ExportWorkspace({
                 <input
                   type="checkbox"
                   checked={keepMissing}
-                  disabled={!includeMedia}
+                  disabled={!includeMedia || format !== 'html'}
                   onChange={(event) => setKeepMissing(event.target.checked)}
                 />
                 <span>媒体缺失时保留占位说明</span>
               </label>
             </div>
+            <p className="export-helper-text">资源文件仅在 HTML 导出中生效，CSV、JSON 和 Markdown 只保留文本内容。</p>
             <div className="export-resource-statuses">
               <span>图片解密：已就绪</span>
               <span>视频资源：可用</span>
@@ -484,7 +601,7 @@ export function ExportWorkspace({
           <section className="export-section">
             <h3>导出格式</h3>
             <div className="export-format-grid">
-              {(Object.keys(formatLabels) as ExportFormat[]).map((value) => (
+              {formatOrder.map((value) => (
                 <button
                   key={value}
                   type="button"
@@ -570,8 +687,8 @@ export function ExportWorkspace({
             </div>
             <div className="export-message-preview">
               <div className="export-preview-date">最近消息</div>
-              {(preview.length
+              {(previewItems.length
-                ? preview
+                ? previewItems
                 : [
                     {
                       id: 'empty',
@@ -585,11 +702,13 @@ export function ExportWorkspace({
               ).map((message) => (
                 <div
                   key={message.id}
-                  className={`export-preview-message ${message.isSender ? 'mine' : ''}`}
+                  className={`export-preview-message ${message.isSender ? 'mine' : ''} ${
+                    message.contentData?.type === 'system' && message.contentData.pat ? 'system' : ''
+                  }`}
                 >
                   <span className="export-preview-avatar">
                     {message.img || (message.isSender && selfInfo?.avatar) ? (
-                      <img src={message.isSender ? selfInfo?.avatar : message.img} alt="" />
+                      <img src={message.img || selfInfo?.avatar} alt="" />
                     ) : (
                       (message.isSender ? '我' : message.name || '友').slice(0, 1)
                     )}
@@ -604,6 +723,17 @@ export function ExportWorkspace({
                 </div>
               ))}
             </div>
+            <div className="export-preview-stats export-preview-real-stats">
+              <span>
+                预览消息<strong>{previewItems.length}</strong>
+              </span>
+              <span>
+                媒体预览<strong>{previewMediaCount}</strong>
+              </span>
+              <span>
+                预估文本大小<strong>{previewBytes < 1024 ? `${previewBytes} B` : `${(previewBytes / 1024).toFixed(1)} KB`}</strong>
+              </span>
+            </div>
             <div className="export-preview-stats">
               <span>
                 消息总数<strong>待统计</strong>

src/renderer/src/features/settings/SettingsWorkspace.tsx

@@ -6,6 +6,7 @@ import { AccountDatabasePage } from './pages/AccountDatabasePage'
 import { DatabaseKeyPage } from './pages/DatabaseKeyPage'
 import { ImageDecryptionPage } from './pages/ImageDecryptionPage'
 import { AIModelPage } from './pages/AIModelPage'
+import { RecallProtectionPage } from './pages/RecallProtectionPage'
 import type { Contact } from '../../../../shared/types'
 import type { AIRuntimeModelConfig } from '../../../../shared/ai-provider'
 
@@ -49,14 +50,10 @@ export function SettingsWorkspace({
         dbReady={dbReady}
         onOpenSettings={onOpenSettings}
       />
-      {selectedCategory === 'account-database' ? (
+      <div className={`settings-page-panel ${selectedCategory === 'account-database' ? 'active' : ''}`}>
-        <AccountDatabasePage
+        <AccountDatabasePage dbKey={dbKey} dbReady={dbReady} selfInfo={selfInfo} onNotice={onNotice} />
-          dbKey={dbKey}
+      </div>
-          dbReady={dbReady}
+      <div className={`settings-page-panel ${selectedCategory === 'database-key' ? 'active' : ''}`}>
-          selfInfo={selfInfo}
-          onNotice={onNotice}
-        />
-      ) : selectedCategory === 'database-key' ? (
         <DatabaseKeyPage
           dbKey={dbKey}
           dbReady={dbReady}
@@ -69,12 +66,20 @@ export function SettingsWorkspace({
           onReturnToLogin={onReturnToLogin}
           onNotice={onNotice}
         />
-      ) : selectedCategory === 'image-key' ? (
+      </div>
+      <div className={`settings-page-panel ${selectedCategory === 'image-key' ? 'active' : ''}`}>
         <ImageDecryptionPage selfInfo={selfInfo} onNotice={onNotice} />
-      ) : selectedCategory === 'ai-model' ? (
+      </div>
+      <div className={`settings-page-panel ${selectedCategory === 'ai-model' ? 'active' : ''}`}>
         <AIModelPage onRuntimeChange={onAIRuntimeChange} onNotice={onNotice} />
-      ) : (
+      </div>
-        <SettingsEmptyState label={SETTINGS_CATEGORY_LABELS[selectedCategory]} />
+      <div className={`settings-page-panel ${selectedCategory === 'recall-protection' ? 'active' : ''}`}>
+        <RecallProtectionPage onNotice={onNotice} />
+      </div>
+      {!['account-database', 'database-key', 'image-key', 'ai-model', 'recall-protection'].includes(selectedCategory) && (
+        <div className="settings-page-panel active">
+          <SettingsEmptyState label={SETTINGS_CATEGORY_LABELS[selectedCategory]} />
+        </div>
       )}
     </div>
   )

src/renderer/src/features/settings/model/settingsNavigation.ts

@@ -18,7 +18,6 @@ export const SETTINGS_NAVIGATION: SettingsNavigationGroup[] = [
     label: '智能能力',
     items: [
       { id: 'ai-model', label: 'AI 模型' },
-      { id: 'local-api', label: '本地 API' }
     ]
   },
   {
@@ -31,6 +30,7 @@ export const SETTINGS_NAVIGATION: SettingsNavigationGroup[] = [
   {
     label: '应用',
     items: [
+      { id: 'recall-protection', label: '防撤回' },
       { id: 'appearance', label: '外观与行为' },
       { id: 'advanced', label: '高级' },
       { id: 'about', label: '关于' }

src/renderer/src/features/settings/model/types.ts

@@ -3,6 +3,7 @@ export type SettingsCategoryId =
   | 'database-key'
   | 'image-key'
   | 'ai-model'
+  | 'recall-protection'
   | 'local-api'
   | 'storage-export'
   | 'cache-cleanup'

src/renderer/src/features/settings/pages/RecallProtectionPage.tsx

@@ -0,0 +1,56 @@
+import { useEffect, useState } from 'react'
+
+export function RecallProtectionPage({ onNotice }: { onNotice: (message: string) => void }): React.ReactElement {
+  const [enabled, setEnabled] = useState(false)
+
+  useEffect(() => {
+    let active = true
+    void window.api.getSettings().then((result) => {
+      if (active) setEnabled(result.settings.recallProtectionEnabled)
+    })
+    return () => {
+      active = false
+    }
+  }, [])
+
+  const changeEnabled = async (checked: boolean): Promise<void> => {
+    const result = await window.api.setSettings({ recallProtectionEnabled: checked })
+    setEnabled(result.settings.recallProtectionEnabled)
+    onNotice(checked ? '已开启防撤回' : '已关闭防撤回')
+  }
+
+  return (
+    <div className="settings-page">
+      <header className="settings-page-header">
+        <div>
+          <h1>防撤回</h1>
+          <p>尽量保留已撤回的聊天内容，并在聊天记录中明确标记。</p>
+        </div>
+      </header>
+      <div className="settings-page-scroll">
+        <div className="settings-page-content">
+          <h2 className="settings-section-heading">消息处理</h2>
+          <section className="settings-card settings-recall-card">
+            <div className="settings-recall-grid">
+              <label className="settings-recall-option">
+                <span>
+                  <b>开启防撤回</b>
+                  <small>尽量保留已撤回的聊天内容，方便后续查看。</small>
+                </span>
+                <input
+                  type="checkbox"
+                  checked={enabled}
+                  onChange={(event) => void changeEnabled(event.target.checked)}
+                />
+              </label>
+              <aside className="settings-recall-notice">
+                <strong>性能提示</strong>
+                <span>开启后会为消息表增加监听，数据量较大或磁盘较慢时可能让加载变慢。</span>
+              </aside>
+            </div>
+          </section>
+        </div>
+      </div>
+    </div>
+  )
+}

src/shared/export.ts

@@ -40,6 +40,16 @@ export interface ExportJobProgress {
   error?: string
 }
 
+export interface ExportTaskRecord {
+  jobId: string
+  contactId: string
+  contactName: string
+  format: ExportFormat
+  status: 'running' | 'completed' | 'cancelled' | 'failed'
+  progress: ExportJobProgress
+  createdAt: number
+}
+
 export interface ExportResult {
   success: boolean
   outputPath?: string

src/shared/types.ts

@@ -93,6 +93,7 @@ type SystemContent = {
   type: 'system'
   content: string
   raw?: string
+  pat?: boolean
   recall?: {
     targetId?: string
     targetIds?: string[]