feat: 隐藏窗口自带应用菜单栏，清理相关死代码

src/main/index.ts

@@ -95,71 +95,6 @@ ipcMain.handle('clipboard:write', (_event, text: string) => {
   return true
 })
 
-function buildMenu(): void {
-  const isMac = process.platform === 'darwin'
-  const template: Electron.MenuItemConstructorOptions[] = [
-    ...(isMac
-      ? [
-          {
-            label: app.name,
-            submenu: [
-              { role: 'about' as const },
-              { type: 'separator' as const },
-              { role: 'quit' as const }
-            ]
-          }
-        ]
-      : []),
-    {
-      label: '文件',
-      submenu: [
-        { label: '打开文件（左侧）', accelerator: 'CmdOrCtrl+O', click: () => sendMenuCommand('open-left') },
-        { label: '打开文件（右侧）', accelerator: 'CmdOrCtrl+Alt+O', click: () => sendMenuCommand('open-right') },
-        { type: 'separator' },
-        isMac ? { role: 'close' as const } : { role: 'quit' as const }
-      ]
-    },
-    {
-      label: '编辑',
-      submenu: [
-        { role: 'undo' as const },
-        { role: 'redo' as const },
-        { type: 'separator' as const },
-        { role: 'cut' as const },
-        { role: 'copy' as const },
-        { role: 'paste' as const },
-        { role: 'selectAll' as const }
-      ]
-    },
-    {
-      label: '视图',
-      submenu: [
-        { role: 'reload' as const },
-        { role: 'forceReload' as const },
-        { role: 'toggleDevTools' as const },
-        { type: 'separator' as const },
-        { role: 'resetZoom' as const },
-        { role: 'zoomIn' as const },
-        { role: 'zoomOut' as const },
-        { type: 'separator' as const },
-        { role: 'togglefullscreen' as const }
-      ]
-    },
-    {
-      label: '帮助',
-      submenu: [{ role: 'about' as const }]
-    }
-  ]
-  Menu.setApplicationMenu(Menu.buildFromTemplate(template))
-}
-
-/** 向渲染进程广播菜单指令 */
-function sendMenuCommand(cmd: string): void {
-  for (const win of BrowserWindow.getAllWindows()) {
-    win.webContents.send('menu:command', cmd)
-  }
-}
-
 app.whenReady().then(() => {
   electronApp.setAppUserModelId('com.metonateam.difflens')
 
@@ -167,7 +102,8 @@ app.whenReady().then(() => {
     optimizer.watchWindowShortcuts(window)
   })
 
-  buildMenu()
+  // 隐藏窗口自带的应用菜单栏（功能入口由界面按钮提供）
+  Menu.setApplicationMenu(null)
   createWindow()
 
   app.on('activate', () => {

src/preload/index.ts

@@ -15,15 +15,7 @@ const api = {
   showInFolder: (filePath: string): Promise<boolean> =>
     ipcRenderer.invoke('file:show-in-folder', filePath),
   setClipboard: (text: string): Promise<boolean> =>
-    ipcRenderer.invoke('clipboard:write', text),
-  /** 订阅顶部菜单命令，返回取消订阅函数 */
-  onMenuCommand: (callback: (cmd: string) => void): (() => void) => {
-    const listener = (_e: unknown, cmd: string): void => callback(cmd)
-    ipcRenderer.on('menu:command', listener)
-    return () => {
-      ipcRenderer.removeListener('menu:command', listener)
-    }
-  }
+    ipcRenderer.invoke('clipboard:write', text)
 }
 
 export type DiffLensApi = typeof api

src/renderer/src/App.tsx

@@ -86,14 +86,6 @@ export default function App(): ReactElement {
     else setPaneR(pane)
   }, [])
 
-  // 订阅顶层菜单命令
-  useEffect(() => {
-    return window.api.onMenuCommand((cmd) => {
-      if (cmd === 'open-left') void openPane('left')
-      else if (cmd === 'open-right') void openPane('right')
-    })
-  }, [openPane])
-
   const diff: DiffResult = useMemo(() => {
     return computeDiff(paneL?.text ?? '', paneR?.text ?? '', options)
   }, [paneL, paneR, options])