docs(desktop): clarify localized native menu behavior

.agents/notes/implemented/bug-fix/2026-09-16-desktop-window-menus.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-09-16-desktop-window-menus.md
-2026-09-16-desktop-window-menus.md: 85ac42aa287b1cd9e595ade7cb44b965dea787dd
-2026-09-16-desktop-window-menus.zh.md: 1376b90058ceafa7e378b4fd543d261064f5d8aa
+2026-09-16-desktop-window-menus.md: 8a5343404e0cb3d2e7c4e20248a8b29f3bfbec47
+2026-09-16-desktop-window-menus.zh.md: d6ee6412462aecf49557a7994a683d37bf8e7253

.agents/notes/implemented/bug-fix/2026-09-16-desktop-window-menus.md

@@ -12,7 +12,7 @@ The Desktop shell replaces Electron's default application menu with a custom tem
 
 On macOS the template declares `{ role: 'fileMenu' }` before the Edit menu and `{ role: 'windowMenu' }` after it, and a separator-delimited run of `hide`, `hideOthers`, and `unhide` before Quit in the application submenu. Those roles contribute only the standard items; no Services submenu, window list, or other macOS default is declared. Windows and Linux keep the application and Edit menus.
 
-Electron's role labels are English string literals inside Electron (`lib/browser/api/menu-item-roles.ts`, `filemenu`, `windowmenu`, `close`, `minimize`, `hide`) with no locale lookup, and Electron re-applies them to the native menu items before the menu is shown, so a non-English Desktop shows them in English; the existing Edit menu behaves the same way. No custom close, minimize, or hide code is added: ⌘W destroys the window through Electron's own role.
+Electron supplies English defaults for the File, Window, and Edit roles. Explicit labels override role defaults while retaining native actions and shortcuts; the localized application commands are documented in the [Desktop README](../../../../apps/desktop/README.md). No custom close, minimize, or hide code is added: ⌘W destroys the window through Electron's own role.
 
 ## Alternatives considered
 
@@ -28,8 +28,8 @@ Electron's role labels are English string literals inside Electron (`lib/browser
 
 ## Consequences
 
-macOS regains the window and application commands the custom menu suppressed, at the cost of four menu roles. The labels stay English on a non-English Desktop.
+macOS regains the window and application commands the custom menu suppressed. File, Window, and Edit retain Electron’s default English labels; application commands use the Desktop locale.
 
 ## Testing
 
-A `apps/desktop/tests/main-startup.spec.ts` case pins the declared menu roles per platform, including the macOS hide commands. Role-based menu items execute natively, so a programmatic `click()` and the vitest Electron mock cannot exercise the shortcuts; a real Electron 44 run of the same template showed the standard File, Window, and application items present only after this change, with the same English labels while `app.getLocale()`, `getSystemLocale()`, and `getPreferredSystemLanguages()` all reported `zh-CN`.
+`apps/desktop/tests/main-startup.spec.ts` verifies the declared menu roles per platform and records English and Chinese application-label snapshots. Role-based menu items execute natively, so a programmatic `click()` and the Vitest Electron mock cannot exercise the shortcuts. The isolated Electron 44 demo confirms that explicit application labels appear in native menus; the template snapshots do not qualify native shortcut execution.

.agents/notes/implemented/bug-fix/2026-09-16-desktop-window-menus.zh.md

@@ -12,7 +12,7 @@ Desktop shell 用自定义模板替换了 Electron 的默认应用菜单，该
 
 macOS 上的模板在 Edit 菜单之前声明 `{ role: 'fileMenu' }`，在其之后声明 `{ role: 'windowMenu' }`，并在应用子菜单的 Quit 之前声明由分隔符隔开的 `hide`、`hideOthers` 和 `unhide`。这些 role 只提供标准菜单项；不声明 Services 子菜单、窗口列表或其他 macOS 默认项。Windows 和 Linux 保留应用菜单和 Edit 菜单。
 
-这些 role 的标签是 Electron 内部的英文常量（`lib/browser/api/menu-item-roles.ts` 的 `filemenu`、`windowmenu`、`close`、`minimize`、`hide`），没有语言查询，而且 Electron 在菜单显示前会把这些标签重新写到本机菜单项上，因此在非英文的 Desktop 上它们仍是英文；现有的 Edit 菜单同样如此。这里不新增任何自定义的关闭、最小化或隐藏代码：⌘W 通过 Electron 自身的 role 销毁窗口。
+Electron 为 File、Window 和 Edit role 提供英文默认标签。显式标签会覆盖 role 的默认标签，同时保留原生命令和快捷键；本地化的应用命令见 [Desktop README](../../../../apps/desktop/README.zh.md)。这里不新增任何自定义的关闭、最小化或隐藏代码：⌘W 通过 Electron 自身的 role 销毁窗口。
 
 ## 考虑过的替代方案
 
@@ -28,8 +28,8 @@ macOS 上的模板在 Edit 菜单之前声明 `{ role: 'fileMenu' }`，在其之
 
 ## 影响
 
-macOS 恢复了自定义菜单压掉的窗口和应用命令，代价是四个菜单 role。在非英文的 Desktop 上这些标签仍是英文。
+macOS 恢复了自定义菜单压掉的窗口和应用命令。File、Window 和 Edit 保留 Electron 的默认英文标签；应用命令使用 Desktop 的语言。
 
 ## 测试
 
-`apps/desktop/tests/main-startup.spec.ts` 中的一个用例固定了各平台声明的菜单 role，包括 macOS 的隐藏命令。基于 role 的菜单项由本机执行，因此程序化的 `click()` 和 vitest 的 Electron mock 都无法触达这些快捷键；用真实 Electron 44 运行同一模板显示，只有在本改动之后才出现标准的 File、Window 和应用菜单项，并且在 `app.getLocale()`、`getSystemLocale()` 和 `getPreferredSystemLanguages()` 都报告 `zh-CN` 时标签保持不变。
+`apps/desktop/tests/main-startup.spec.ts` 验证各平台声明的菜单 role，并记录中英文应用标签快照。基于 role 的菜单项由本机执行，因此程序化的 `click()` 和 Vitest 的 Electron mock 都无法触达这些快捷键。独立 Electron 44 demo 确认显式应用标签会显示在原生菜单中；模板快照不能验证原生快捷键的执行。

apps/desktop/src/main.ts

@@ -608,6 +608,7 @@ async function main(): Promise<void> {
   })
   // A custom application menu replaces Electron's default menu, so macOS needs
   // its standard menus and application hide commands declared explicitly.
+  // Keep app.name stable: Electron derives its default userData directory from it.
   const darwin = process.platform === 'darwin'
   const platformMenus: MenuItemConstructorOptions[] = darwin
     ? [{ role: 'fileMenu' }, { role: 'editMenu' }, { role: 'windowMenu' }]