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', () => {