fix(desktop): 显示完整菜单栏并启用快捷键

frontend/src/services/platform/lifecycle.ts

@@ -9,8 +9,22 @@ import { isDesktop } from './desktop'
 export async function installDesktopLifecycle() {
   if (!isDesktop()) return
   const activeEditor = useEditorStore()
+  // 保存属于窗口级命令；编辑区原生处理撤销/重做，避免重复派发。
+  window.addEventListener('keydown', event => {
+    if (event.defaultPrevented || event.isComposing || event.repeat || event.altKey || event.shiftKey) return
+    if (!(event.ctrlKey || event.metaKey) || event.key.toLowerCase() !== 's') return
+    const target = event.target as HTMLElement | null
+    if (target?.closest('input, textarea, select, dialog[open], [role="dialog"]')) return
+    if (!activeEditor.currentFilePath || ['saving', 'conflict', 'external_changed'].includes(activeEditor.saveStatus)) return
+    event.preventDefault()
+    void activeEditor.save()
+  })
   watch(() => [activeEditor.currentFilePath, activeEditor.saveStatus, activeEditor.mode], updateNativeEditorMenu, { flush: 'post' })
-  await listen<string>('editor-command', event => { void executeEditorCommand(event.payload) })
+  await listen<string>('editor-command', event => {
+    const focused = document.activeElement as HTMLElement | null
+    if (focused?.closest('input, textarea, select, dialog[open], [role="dialog"]')) return
+    void executeEditorCommand(event.payload)
+  })
   let closing = false
   await listen('host-close-requested', async () => {
     if (closing) return