feat: about tab with update check/download (Gitea feed first, GitHub fallback)

- updater: dual-feed state machine, manual check/download/install IPC,
  changelog from Gitea releases API with GitHub fallback
- settings: new About tab (version, channel, auto-check toggle, progress)
- system.autoCheckUpdate setting gates the startup check

src/main/index.ts

@@ -5,7 +5,7 @@ import { registerIpc } from './ipc'
 import { killAllPtys } from './pty'
 import { applyStartupSystemSettings, loadSettings } from './settingsStore'
 import { initTray, markQuitting, onMainWindowClose } from './tray'
-import { configureAutoUpdater } from './updater'
+import { configureAutoUpdater, registerUpdateIpc } from './updater'
 import { applyWindowChrome } from './windowChrome'
 import { getThemeById } from '@shared/theme'
 

src/main/settingsStore.ts

@@ -21,7 +21,8 @@ const DEFAULT_SYSTEM: SystemSettings = {
   launchAtLogin: false,
   preventSleep: false,
   globalShowHide: '',
-  closeAction: 'ask'
+  closeAction: 'ask',
+  autoCheckUpdate: true
 }
 
 const TERMINAL_KEYS = new Set(Object.keys(DEFAULT_SETTINGS.terminal) as (keyof TerminalSettings)[])
@@ -91,7 +92,8 @@ function deepMerge(raw: unknown): { settings: AppSettings; errors: string[] } {
         launchAtLogin: candidate.launchAtLogin === true,
         preventSleep: candidate.preventSleep === true,
         globalShowHide,
-        closeAction
+        closeAction,
+        autoCheckUpdate: candidate.autoCheckUpdate !== false
       }
     }
   }

src/main/updater.ts

@@ -1,54 +1,153 @@
-import { app } from 'electron'
+import { app, ipcMain, net } from 'electron'
 import { autoUpdater } from 'electron-updater'
+import { Ipc, type ReleaseNote, type UpdateState } from '../shared/ipc'
+import { broadcast } from './broadcast'
+import { loadSettings } from './settingsStore'
+import { markQuitting } from './tray'
 
 /**
- * Default update feed (generic provider). The main agent uploads latest.yml and
- * the NSIS installer to this stable path.
- *
- * KNOWN LIMITATION: electron-updater does NOT support MSI auto-updates. The
- * update channel always runs through the NSIS .exe (latest.yml + .exe are
- * uploaded together). MSI is manual/enterprise distribution only.
+ * Update feeds: domestic Gitea generic package is tried first (fast in
+ * China); GitHub releases is the fallback. Both feeds carry the NSIS .exe —
+ * electron-updater does NOT support MSI auto-updates, MSI is manual only.
  */
-const DEFAULT_FEED_URL =
+const GITEA_FEED =
   'https://git.codingplan.site/api/packages/admin/generic/openterminal-update/stable/'
+const GITEA_RELEASES_API =
+  'https://git.codingplan.site/api/v1/repos/admin/OpenTerminal/releases?limit=10'
+const GITHUB_REPO = { owner: 'billowliu2', repo: 'OpenTerminal' }
+const GITHUB_RELEASES_API =
+  'https://api.github.com/repos/billowliu2/OpenTerminal/releases?per_page=10'
+
+let state: UpdateState = { status: 'idle', currentVersion: app.getVersion() }
+let activeFeed: 'gitea' | 'github' = 'gitea'
+let eventsWired = false
+
+function setState(patch: Partial<UpdateState>): void {
+  state = { ...state, ...patch, currentVersion: app.getVersion() }
+  broadcast(Ipc.UPDATE_STATE, state)
+}
+
+function useFeed(feed: 'gitea' | 'github'): void {
+  activeFeed = feed
+  if (feed === 'gitea') {
+    const token = process.env.OT_UPDATE_TOKEN
+    autoUpdater.setFeedURL({
+      provider: 'generic',
+      url: process.env.OT_UPDATE_URL || GITEA_FEED,
+      ...(token ? { requestHeaders: { Authorization: `token ${token}` } } : {})
+    })
+  } else {
+    autoUpdater.setFeedURL({ provider: 'github', ...GITHUB_REPO })
+  }
+}
+
+function wireEvents(): void {
+  if (eventsWired) return
+  eventsWired = true
+  autoUpdater.on('checking-for-update', () => setState({ status: 'checking', error: undefined }))
+  autoUpdater.on('update-available', (info) =>
+    setState({ status: 'available', version: info.version, feed: activeFeed, percent: undefined })
+  )
+  autoUpdater.on('update-not-available', () => setState({ status: 'latest', version: undefined }))
+  autoUpdater.on('download-progress', (p) =>
+    setState({ status: 'downloading', percent: Math.round(p.percent) })
+  )
+  autoUpdater.on('update-downloaded', (info) =>
+    setState({ status: 'downloaded', version: info.version, percent: undefined })
+  )
+  autoUpdater.on('error', (err) =>
+    setState({ status: 'error', error: err instanceof Error ? err.message : String(err) })
+  )
+}
+
+/** Check the active feed; on failure switch Gitea → GitHub and retry once. */
+async function checkWithFallback(): Promise<void> {
+  try {
+    await autoUpdater.checkForUpdates()
+  } catch (err) {
+    if (activeFeed !== 'gitea') throw err
+    console.warn('[updater] gitea feed failed, falling back to github:', err)
+    useFeed('github')
+    await autoUpdater.checkForUpdates()
+  }
+}
+
+async function handleCheck(): Promise<UpdateState> {
+  if (!app.isPackaged) {
+    setState({ status: 'dev' })
+    return state
+  }
+  setState({ status: 'checking', error: undefined, percent: undefined })
+  try {
+    await checkWithFallback()
+  } catch (err) {
+    setState({ status: 'error', error: err instanceof Error ? err.message : String(err) })
+  }
+  return state
+}
+
+async function handleDownload(): Promise<void> {
+  if (!app.isPackaged) return
+  setState({ status: 'downloading', percent: 0 })
+  try {
+    await autoUpdater.downloadUpdate()
+  } catch (err) {
+    setState({ status: 'error', error: err instanceof Error ? err.message : String(err) })
+  }
+}
+
+/** Gitea releases first, GitHub releases as fallback; both are public reads. */
+async function fetchChangelog(): Promise<ReleaseNote[]> {
+  for (const url of [GITEA_RELEASES_API, GITHUB_RELEASES_API]) {
+    try {
+      const resp = await net.fetch(url, { headers: { 'User-Agent': 'OpenTerminal' } })
+      if (!resp.ok) continue
+      const data = (await resp.json()) as Array<{
+        tag_name?: string
+        name?: string
+        published_at?: string
+        body?: string
+      }>
+      return data
+        .map((r) => ({
+          version: r.tag_name ?? r.name ?? '',
+          date: (r.published_at ?? '').slice(0, 10),
+          body: r.body ?? ''
+        }))
+        .filter((r) => r.version)
+    } catch {
+      // try next source
+    }
+  }
+  return []
+}
+
+export function registerUpdateIpc(): void {
+  ipcMain.handle(Ipc.UPDATE_CHECK, handleCheck)
+  ipcMain.handle(Ipc.UPDATE_DOWNLOAD, handleDownload)
+  ipcMain.handle(Ipc.UPDATE_INSTALL, () => {
+    // The close interceptor (tray flow) would swallow this quit — mark first.
+    markQuitting()
+    autoUpdater.quitAndInstall()
+  })
+  ipcMain.handle(Ipc.UPDATE_CHANGELOG, fetchChangelog)
+}
 
 export function configureAutoUpdater(): void {
   // Update checks only run in packaged builds; no-op during development.
   if (!app.isPackaged) {
     return
   }
-
-  const url = process.env.OT_UPDATE_URL || DEFAULT_FEED_URL
-  const token = process.env.OT_UPDATE_TOKEN
-
-  autoUpdater.setFeedURL({
-    provider: 'generic',
-    url,
-    ...(token ? { requestHeaders: { Authorization: `token ${token}` } } : {})
-  })
-
+  useFeed('gitea')
+  wireEvents()
   autoUpdater.logger = console
-  autoUpdater.autoDownload = true
+  autoUpdater.autoDownload = false
   autoUpdater.autoInstallOnAppQuit = true
 
-  // Check shortly after startup; log errors without crashing the app.
+  // Startup check only when the user left it enabled (设置 → 关于).
+  if (loadSettings().system.autoCheckUpdate === false) return
   const timer = setTimeout(() => {
-    autoUpdater
-      .checkForUpdatesAndNotify()
-      .catch((err) => console.warn('[updater] checkForUpdates failed:', err))
+    void handleCheck()
   }, 5000)
   timer.unref?.()
 }
-
-/** Public entry point for later UI wiring (not connected this milestone). */
-export function checkForUpdates(): Promise<void> {
-  if (!app.isPackaged) {
-    return Promise.resolve()
-  }
-  return autoUpdater
-    .checkForUpdates()
-    .then(() => {})
-    .catch((err) => {
-      console.warn('[updater] checkForUpdates failed:', err)
-    })
-}

src/preload/index.ts

@@ -2,7 +2,7 @@ import { contextBridge, ipcRenderer } from 'electron'
 import { Ipc } from '../shared/ipc'
 import type { AppSettings } from '../shared/settings'
 import type { AppApi } from '../shared/api'
-import type { LayoutMeta, PtyCreateOptions, PtyDataEvent, PtyExitEvent, ZmodemOfferEvent, ZmodemResponse, ZmodemDoneEvent } from '../shared/ipc'
+import type { LayoutMeta, PtyCreateOptions, PtyDataEvent, PtyExitEvent, ReleaseNote, UpdateState, ZmodemOfferEvent, ZmodemResponse, ZmodemDoneEvent } from '../shared/ipc'
 import type {
   HostKeyAction,
   HostKeyPromptEvent,
@@ -117,7 +117,17 @@ const api: AppApi = {
   listLayouts: () => ipcRenderer.invoke(Ipc.LAYOUTS_LIST),
   getLayout: (id: string) => ipcRenderer.invoke(Ipc.LAYOUTS_GET, id),
   saveLayout: (meta: LayoutMeta, json: string) => ipcRenderer.invoke(Ipc.LAYOUTS_SAVE, meta, json),
-  deleteLayout: (id: string) => ipcRenderer.invoke(Ipc.LAYOUTS_DELETE, id)
+  deleteLayout: (id: string) => ipcRenderer.invoke(Ipc.LAYOUTS_DELETE, id),
+
+  updateCheck: () => ipcRenderer.invoke(Ipc.UPDATE_CHECK),
+  updateDownload: () => ipcRenderer.invoke(Ipc.UPDATE_DOWNLOAD),
+  updateInstall: () => ipcRenderer.send(Ipc.UPDATE_INSTALL),
+  updateChangelog: () => ipcRenderer.invoke(Ipc.UPDATE_CHANGELOG),
+  onUpdateState: (cb: (s: UpdateState) => void) => {
+    const listener = (_: unknown, s: UpdateState): void => cb(s)
+    ipcRenderer.on(Ipc.UPDATE_STATE, listener)
+    return () => ipcRenderer.removeListener(Ipc.UPDATE_STATE, listener)
+  }
 }
 
 contextBridge.exposeInMainWorld('api', api)

src/renderer/src/main.tsx

@@ -84,7 +84,12 @@ if (typeof window !== 'undefined' && !window.api) {
     listLayouts: async () => [],
     getLayout: async () => null,
     saveLayout: async () => undefined,
-    deleteLayout: async () => undefined
+    deleteLayout: async () => undefined,
+    updateCheck: async () => ({ status: 'dev' as const, currentVersion: 'dev' }),
+    updateDownload: async () => undefined,
+    updateInstall: noop,
+    updateChangelog: async () => [],
+    onUpdateState: () => noop
   }
   ;(window as unknown as { api: AppApi }).api = api
 }

src/renderer/src/settings/AboutTab.tsx

@@ -0,0 +1,105 @@
+import { useEffect, useState } from 'react'
+import { Button, Progress, Select, Switch, Tag } from 'antd'
+import type { AppInfo, ReleaseNote, UpdateState, UpdateStatus } from '@shared/ipc'
+import { useSettingsStore } from './store'
+
+const STATUS_TEXT: Record<UpdateStatus, string> = {
+  idle: '点击检查更新',
+  checking: '正在检查更新…',
+  available: '发现新版本',
+  latest: '已经是最新版本',
+  downloading: '正在下载…',
+  downloaded: '下载完成，可重启安装',
+  error: '检查失败',
+  dev: '开发模式不支持更新检查'
+}
+
+/** 关于页：版本信息 + 更新检查/下载/安装 + 更新日志（国内源优先，GitHub 兜底）。 */
+export function AboutTab(): React.JSX.Element {
+  const [version, setVersion] = useState('')
+  const [state, setState] = useState<UpdateState | null>(null)
+  const [notes, setNotes] = useState<ReleaseNote[]>([])
+  const updateSystem = useSettingsStore((s) => s.updateSystem)
+  const autoCheck = useSettingsStore((s) => s.settings.system.autoCheckUpdate !== false)
+
+  useEffect(() => {
+    void window.api.appInfo().then((i: AppInfo) => setVersion(i.appVersion))
+    void window.api.updateChangelog().then(setNotes).catch(() => undefined)
+    return window.api.onUpdateState(setState)
+  }, [])
+
+  const status = state?.status ?? 'idle'
+  const statusText = STATUS_TEXT[status] + (state?.version ? ` v${state.version}` : '')
+
+  return (
+    <div className="about-tab">
+      <div className="about-header">
+        <div className="about-logo">OT</div>
+        <div>
+          <div className="about-name">OpenTerminal</div>
+          <div className="about-version">
+            当前版本: {version || '…'}{' '}
+            <span className={'about-status' + (status === 'available' ? ' is-new' : '')}>
+              {statusText}
+            </span>
+            {state?.error && <div className="about-error">{state.error}</div>}
+          </div>
+        </div>
+      </div>
+
+      <div className="about-controls">
+        <Select
+          value="stable"
+          options={[{ value: 'stable', label: '稳定更新通道' }]}
+          style={{ width: 150 }}
+        />
+        <label className="about-autocheck">
+          <Switch
+            size="small"
+            checked={autoCheck}
+            onChange={(checked) => void updateSystem({ autoCheckUpdate: checked })}
+          />
+          启动时自动检查
+        </label>
+        {status === 'available' && (
+          <Button type="primary" onClick={() => void window.api.updateDownload()}>
+            下载更新{state?.feed === 'github' ? '（GitHub 源）' : ''}
+          </Button>
+        )}
+        {status === 'downloaded' && (
+          <Button type="primary" onClick={() => window.api.updateInstall()}>
+            重启安装
+          </Button>
+        )}
+        {(status === 'idle' || status === 'latest' || status === 'error') && (
+          <Button type="primary" onClick={() => void window.api.updateCheck()}>
+            检查更新
+          </Button>
+        )}
+        {status === 'checking' && (
+          <Button type="primary" loading disabled>
+            检查中
+          </Button>
+        )}
+      </div>
+
+      {status === 'downloading' && (
+        <Progress percent={state?.percent ?? 0} size="small" status="active" />
+      )}
+
+      <div className="about-changelog">
+        <div className="about-changelog-title">更新日志</div>
+        {notes.length === 0 && <div className="about-changelog-empty">暂无更新日志</div>}
+        {notes.map((n) => (
+          <div key={n.version} className="about-release">
+            <div className="about-release-head">
+              <Tag color="green">{n.version}</Tag>
+              <span className="about-release-date">{n.date}</span>
+            </div>
+            <div className="about-release-body">{n.body}</div>
+          </div>
+        ))}
+      </div>
+    </div>
+  )
+}

src/renderer/src/settings/SettingsDialog.tsx

@@ -6,6 +6,7 @@ import { useSettingsStore } from './store'
 import { CursorSettingsTab, FontSettingsTab, RenderSettingsTab, SystemSettingsTab } from './SettingsTabs'
 import { ThemeSettingsTab } from './ThemeSettingsTab'
 import { HighlightTab } from './HighlightTab'
+import { AboutTab } from './AboutTab'
 import { ThemeEditor } from '../theme/editor/ThemeEditor'
 import './settings.css'
 
@@ -35,7 +36,8 @@ export function SettingsDialog({ open, onClose }: SettingsDialogProps): React.JS
         />
       )
     },
-    { key: 'system', label: '系统', children: <SystemSettingsTab /> }
+    { key: 'system', label: '系统', children: <SystemSettingsTab /> },
+    { key: 'about', label: '关于', children: <AboutTab /> }
   ]
 
   const closeEditor = (): void => setEditorState((prev) => (prev.open ? { ...prev, open: false } : prev))

src/renderer/src/settings/settings.css

@@ -344,3 +344,102 @@
   overflow: hidden;
   text-overflow: ellipsis;
 }
+/* ---- about / updater tab ---- */
+.about-header {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  margin-bottom: 18px;
+}
+
+.about-logo {
+  width: 48px;
+  height: 48px;
+  border-radius: 12px;
+  background: #1e2531;
+  color: #3fd06a;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: 700;
+  font-size: 18px;
+}
+
+.about-name {
+  font-size: 16px;
+  font-weight: 600;
+}
+
+.about-version {
+  font-size: 12px;
+  opacity: 0.7;
+  margin-top: 3px;
+}
+
+.about-status {
+  margin-left: 10px;
+}
+
+.about-status.is-new {
+  color: #3fd06a;
+}
+
+.about-error {
+  color: #f85149;
+  margin-top: 4px;
+  font-size: 12px;
+  word-break: break-all;
+}
+
+.about-controls {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  margin-bottom: 18px;
+}
+
+.about-autocheck {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  opacity: 0.85;
+}
+
+.about-changelog {
+  border-top: 1px solid rgba(255, 255, 255, 0.08);
+  padding-top: 12px;
+}
+
+.about-changelog-title {
+  font-weight: 600;
+  margin-bottom: 10px;
+}
+
+.about-changelog-empty {
+  opacity: 0.5;
+  font-size: 12px;
+}
+
+.about-release {
+  margin-bottom: 14px;
+}
+
+.about-release-head {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 4px;
+}
+
+.about-release-date {
+  font-size: 12px;
+  opacity: 0.6;
+}
+
+.about-release-body {
+  font-size: 12px;
+  opacity: 0.85;
+  white-space: pre-wrap;
+  line-height: 1.6;
+}

src/shared/api.ts

@@ -8,6 +8,7 @@ import type {
   SessionOpenResult
 } from './ipc'
 import type { AppSettings } from './settings'
+import type { ReleaseNote, UpdateState } from './ipc'
 import type {
   HostKeyAction,
   HostKeyPromptEvent,
@@ -105,4 +106,11 @@ export interface AppApi {
   /** json = serialized dockview layout (DockviewApi.toJSON()) */
   saveLayout(meta: LayoutMeta, json: string): Promise<void>
   deleteLayout(id: string): Promise<void>
+
+  // ---- updater (domestic feed first, GitHub fallback) ----
+  updateCheck(): Promise<UpdateState>
+  updateDownload(): Promise<void>
+  updateInstall(): void
+  updateChangelog(): Promise<ReleaseNote[]>
+  onUpdateState(cb: (s: UpdateState) => void): () => void
 }

src/shared/ipc.ts

@@ -90,7 +90,15 @@ export const Ipc = {
   ZMODEM_DONE: 'zmodem:done',
 
   // ---- misc ----
-  APP_INFO: 'app:info'
+  APP_INFO: 'app:info',
+
+  // ---- updater (check/download/install + state broadcast) ----
+  UPDATE_CHECK: 'update:check',
+  UPDATE_DOWNLOAD: 'update:download',
+  UPDATE_INSTALL: 'update:install',
+  UPDATE_CHANGELOG: 'update:changelog',
+  /** main -> renderer broadcast: UpdateState */
+  UPDATE_STATE: 'update:state'
 } as const
 
 export interface PtyCreateOptions {
@@ -122,6 +130,37 @@ export interface AppInfo {
   homeDir: string
 }
 
+// ---- updater ----
+export type UpdateStatus =
+  | 'idle'
+  | 'checking'
+  | 'available'
+  | 'latest'
+  | 'downloading'
+  | 'downloaded'
+  | 'error'
+  /** dev builds have no update channel */
+  | 'dev'
+
+export interface UpdateState {
+  status: UpdateStatus
+  /** running app version */
+  currentVersion: string
+  /** newer version when available/downloading/downloaded */
+  version?: string
+  /** 0-100 while downloading */
+  percent?: number
+  error?: string
+  /** which feed served the last check: domestic Gitea first, GitHub fallback */
+  feed?: 'gitea' | 'github'
+}
+
+export interface ReleaseNote {
+  version: string
+  date: string
+  body: string
+}
+
 export interface LayoutMeta {
   id: string
   name: string

src/shared/settings.ts

@@ -47,6 +47,8 @@ export interface SystemSettings {
   globalShowHide?: string
   /** close-button behavior: prompt every time / hide to tray / quit directly */
   closeAction?: 'ask' | 'tray' | 'exit'
+  /** check for updates shortly after startup (manual check always available) */
+  autoCheckUpdate?: boolean
 }
 
 export interface AppSettings {
@@ -102,5 +104,5 @@ export const DEFAULT_SETTINGS: AppSettings = {
   },
   customThemes: [],
   highlightRules: DEFAULT_HIGHLIGHT_RULES,
-  system: { launchAtLogin: false, preventSleep: false, globalShowHide: '', closeAction: 'ask' }
+  system: { launchAtLogin: false, preventSleep: false, globalShowHide: '', closeAction: 'ask', autoCheckUpdate: true }
 }