feat(app): make the New tab launcher keyboard-first

Cmd/Ctrl+T now opens the focused pane's launcher, while explicit target shortcuts bypass the menu. Dispatcher ownership is scoped to the app tree so retained workspaces cannot intercept commands.

packages/app/src/i18n/resources/zh-CN.ts

@@ -592,6 +592,8 @@ export const zhCN: TranslationResources = {
         preparingTerminal: "正在准备 Terminal 标签",
         preparingTerminalTooltip: "正在准备 Terminal...",
         newBrowser: "新建浏览器",
+        maximizePane: "最大化窗格",
+        restorePane: "还原窗格",
         exitFocusMode: "退出专注模式",
         splitRight: "向右拆分窗格",
         splitDown: "向下拆分窗格",
@@ -1336,6 +1338,7 @@ export const zhCN: TranslationResources = {
     openPath: "打开路径",
   },
   branchSwitcher: {
+    triggerTooltip: "切换工作区分支",
     currentBranch: "当前分支：{{branchName}}。按下以切换分支。",
     placeholder: "切换分支...",
     searchPlaceholder: "筛选分支...",
@@ -2029,6 +2032,7 @@ export const zhCN: TranslationResources = {
         toggleBothSidebars: "切换两侧边栏",
         toggleSettings: "切换设置",
         toggleFocusMode: "切换专注模式",
+        toggleExplorerPaneMaximization: "切换资源管理器窗格最大化",
         cycleTheme: "循环切换主题",
         focusMessageInput: "聚焦消息输入框",
         cycleAgentMode: "循环切换代理模式",