新增关闭历史记录开关：可在设置中停止保存历史记录（默认开启）

client/src/features/settings/GeneralSettingsPage.tsx

@@ -29,6 +29,7 @@ export default function GeneralSettingsPage() {
   const [protectClipboard, setProtectClipboard] = useState(true)
   const [pttKey, setPttKey] = useState('AltLeft')
   const [handsFreeKey, setHandsFreeKey] = useState('Alt+L')
+  const [historyEnabled, setHistoryEnabled] = useState(true)
   const [audioRetentionEnabled, setAudioRetentionEnabled] = useState(true)
   const [audioRetentionDays, setAudioRetentionDays] = useState(30)
   const [logRetentionDays, setLogRetentionDays] = useState(30)
@@ -45,6 +46,7 @@ export default function GeneralSettingsPage() {
     getSetting('protectClipboard', true).then((value) => setProtectClipboard(Boolean(value)))
     getSetting('shortcutPTT', 'AltRight').then((value) => setPttKey(value as string))
     getSetting('shortcutHandsFree', 'Alt+L').then((value) => setHandsFreeKey(value as string))
+    getSetting('historyEnabled', true).then((value) => setHistoryEnabled(Boolean(value)))
     getSetting('audioRetentionEnabled', true).then((value) => setAudioRetentionEnabled(Boolean(value)))
     getSetting('readySoundEnabled', true).then((value) => setReadySoundEnabled(Boolean(value)))
     getSetting('audioRetentionDays', -1).then((value) => {
@@ -55,7 +57,7 @@ export default function GeneralSettingsPage() {
       const v = Number(value)
       if (v === 7 || v === 15 || v === 30 || v === 90) setLogRetentionDays(v)
     })
-    listMicrophones().then(setMics).catch(() => {})
+    listMicrophones().then(setMics).catch(() => { })
   }, [])
 
   const toggleAutoLaunch = async () => { const next = !autoLaunch; setAutoLaunch(next); await bridge.setAutoLaunch(next) }
@@ -63,6 +65,7 @@ export default function GeneralSettingsPage() {
   const handleMicChange = async (deviceId: string) => { setSelectedMic(deviceId); await setSetting('selectedMic', deviceId); await refreshRecorderSettings() }
   const toggleMuteSystemAudio = async () => { const next = !muteSystemAudio; setMuteSystemAudio(next); await setSetting('muteSystemAudioWhileRecording', next); await refreshRecorderSettings() }
   const toggleProtectClipboard = async () => { const next = !protectClipboard; setProtectClipboard(next); await setSetting('protectClipboard', next); await refreshRecorderSettings() }
+  const toggleHistoryEnabled = async () => { const next = !historyEnabled; setHistoryEnabled(next); await setSetting('historyEnabled', next) }
   const toggleAudioRetention = async () => { const next = !audioRetentionEnabled; setAudioRetentionEnabled(next); await setSetting('audioRetentionEnabled', next) }
   const toggleReadySound = async () => { const next = !readySoundEnabled; setReadySoundEnabled(next); await setSetting('readySoundEnabled', next); await refreshRecorderSettings() }
   const handleAudioRetentionDaysChange = async (value: number) => { setAudioRetentionDays(value); await setSetting('audioRetentionDays', value) }
@@ -173,6 +176,18 @@ export default function GeneralSettingsPage() {
 
         <AppSection autoLaunch={autoLaunch} onToggleAutoLaunch={toggleAutoLaunch} autoCheckUpdate={autoCheckUpdate} onToggleAutoCheckUpdate={toggleAutoCheckUpdate} />
 
+        <Card>
+          <CardContent className="p-6">
+            <div className="flex items-start justify-between gap-4">
+              <div>
+                <h2 className="text-lg font-semibold">历史记录</h2>
+                <p className="mt-1 text-sm text-muted-foreground">保存每次转写的文本与录音到本地历史，可随时回看、复制和重新识别。关闭后不再保存新的记录（适合与他人共用的电脑）；已有记录不会被删除，可在历史页手动清除。</p>
+              </div>
+              <Switch checked={historyEnabled} onChange={() => void toggleHistoryEnabled()} />
+            </div>
+          </CardContent>
+        </Card>
+
         <Card>
           <CardContent className="p-6">
             <div className="flex items-start justify-between gap-4">

client/src/services/defaults.ts

@@ -69,6 +69,7 @@ export const DEFAULTS: Record<string, unknown> = {
 
   // ── 应用设置 ──
   autoCheckUpdate: true, // 自动检查更新。可选: true | false
+  historyEnabled: true, // 保存历史记录（文本+录音）。关闭后不再保存新记录，适合共享电脑。可选: true | false
   audioRetentionEnabled: true, // 保留录音文件。可选: true | false
   audioRetentionDays: -1, // 录音保留天数。可选: 7 | 30 | 90 | -1（永久）
   logRetentionDays: 30, // 日志保留天数。可选: 7 | 15 | 30 | 90

client/src/services/recorder/RecorderOrchestrator.ts

@@ -603,6 +603,7 @@ export class RecorderOrchestrator {
           const wallSec = this.wallTimeAtStopSec > 0 ? this.wallTimeAtStopSec : audioDur
           // Save audio even for empty results
           const saveAndRecord = async () => {
+            if (!(await getSetting('historyEnabled', true))) return
             let audioFilePath: string | undefined
             const recordId = Date.now().toString(36) + Math.random().toString(36).slice(2, 6)
             const saveAudioEnabled = await getSetting('audioRetentionEnabled', true)
@@ -703,6 +704,7 @@ export class RecorderOrchestrator {
         const wallSec = this.wallTimeAtStopSec > 0 ? this.wallTimeAtStopSec : audioDur
         if (audioDur >= 0.5 && this.recordedChunks.length > 0) {
           const saveErrorHistory = async () => {
+            if (!(await getSetting('historyEnabled', true))) return
             let audioFilePath: string | undefined
             const recordId = Date.now().toString(36) + Math.random().toString(36).slice(2, 6)
             const saveAudioEnabled = await getSetting('audioRetentionEnabled', true)
@@ -1353,6 +1355,7 @@ export class RecorderOrchestrator {
         this.timedOutProcessingContext = null
         void (async () => {
           try {
+            if (!(await getSetting('historyEnabled', true))) return
             let audioFilePath: string | undefined
             const recordId = Date.now().toString(36) + Math.random().toString(36).slice(2, 6)
             const saveAudioEnabled = await getSetting('audioRetentionEnabled', true)
@@ -1614,38 +1617,41 @@ export class RecorderOrchestrator {
     })
 
     try {
-      // Save audio file if we have recorded chunks
-      let audioFilePath: string | undefined
-      const recordId = Date.now().toString(36) + Math.random().toString(36).slice(2, 6)
-      const saveAudioEnabled = await getSetting('audioRetentionEnabled', true)
-      if (saveAudioEnabled && this.recordedChunks.length > 0) {
-        try {
-          const savedPath = await saveRecordingAudio(recordId, this.recordedChunks)
-          if (savedPath) audioFilePath = savedPath
-        } catch (err) {
-          addRuntimeEvent('warn', 'recorder', '保存音频文件失败', { error: String(err) })
+      // 关闭历史记录时不保存任何记录与音频（共享电脑隐私），但仍完成文本插入
+      if (await getSetting('historyEnabled', true)) {
+        // Save audio file if we have recorded chunks
+        let audioFilePath: string | undefined
+        const recordId = Date.now().toString(36) + Math.random().toString(36).slice(2, 6)
+        const saveAudioEnabled = await getSetting('audioRetentionEnabled', true)
+        if (saveAudioEnabled && this.recordedChunks.length > 0) {
+          try {
+            const savedPath = await saveRecordingAudio(recordId, this.recordedChunks)
+            if (savedPath) audioFilePath = savedPath
+          } catch (err) {
+            addRuntimeEvent('warn', 'recorder', '保存音频文件失败', { error: String(err) })
+          }
         }
+
+        const providerMeta = await this.buildProviderMetadata(result)
+
+        await addHistory({
+          id: recordId,
+          timestamp: Date.now(),
+          asrText: result.asrText,
+          llmText: textToPaste,
+          asrMs: result.asrMs,
+          llmMs: result.llmMs,
+          durationSec: wallSec,
+          audioDurationSec: audioDur > 0 ? audioDur : undefined,
+          asrDurationSec: result.durationSec > 0 ? result.durationSec : undefined,
+          charCount: hasText ? textToPaste.length : 0,
+          isEmpty: !hasText,
+          audioFilePath,
+          ...this.buildHistoryMetadata(promptResolution),
+          ...providerMeta,
+        })
+        void bridge.emit('history-updated')
       }
-
-      const providerMeta = await this.buildProviderMetadata(result)
-
-      await addHistory({
-        id: recordId,
-        timestamp: Date.now(),
-        asrText: result.asrText,
-        llmText: textToPaste,
-        asrMs: result.asrMs,
-        llmMs: result.llmMs,
-        durationSec: wallSec,
-        audioDurationSec: audioDur > 0 ? audioDur : undefined,
-        asrDurationSec: result.durationSec > 0 ? result.durationSec : undefined,
-        charCount: hasText ? textToPaste.length : 0,
-        isEmpty: !hasText,
-        audioFilePath,
-        ...this.buildHistoryMetadata(promptResolution),
-        ...providerMeta,
-      })
-      void bridge.emit('history-updated')
     } catch (error) {
       addRuntimeEvent('warn', 'recorder', '写入历史记录失败', { error: String(error) })
     }