添加应用级别窗口按钮，以改善linux wayland下系统窗口按钮失效的问题 (#1119)

* feat(window): add app-level window controls with settings toggle

Add a persistent settings toggle to enable app-level minimize/maximize/close controls and hide system decorations when enabled, providing a Wayland-friendly fallback for broken native titlebar interactions.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(window): restrict app-level window controls to Linux only and fix startup flicker

- Guard useAppWindowControls with isLinux() in App.tsx so it's always
  false on macOS/Windows even if persisted as true
- Wrap set_decorations call in lib.rs with #[cfg(target_os = "linux")]
- Only show the toggle in WindowSettings on Linux
- Skip setDecorations effect while settingsData is still loading to
  prevent the Rust-side decoration state from being overridden by the
  undefined->false fallback, which caused a brief title bar flicker

---------

Co-authored-by: wzk <wx13571681304@outlook.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Jason <farion1231@gmail.com>

src/i18n/locales/en.json

@@ -91,7 +91,11 @@
     "switchToChinese": "Switch to Chinese",
     "switchToEnglish": "Switch to English",
     "enterEditMode": "Enter Edit Mode",
-    "exitEditMode": "Exit Edit Mode"
+    "exitEditMode": "Exit Edit Mode",
+    "windowMinimize": "Minimize window",
+    "windowMaximize": "Maximize window",
+    "windowRestore": "Restore window",
+    "windowClose": "Close window"
   },
   "provider": {
     "tabProvider": "Provider",
@@ -201,7 +205,8 @@
     "openclawDefaultModelSet": "Set as default model",
     "openclawDefaultModelSetFailed": "Failed to set default model",
     "openclawNoModels": "No models configured",
-    "backfillWarning": "Switched successfully, but failed to save changes back to the previous provider"
+    "backfillWarning": "Switched successfully, but failed to save changes back to the previous provider",
+    "windowControlFailed": "Window control failed: {{error}}"
   },
   "confirm": {
     "deleteProvider": "Delete Provider",
@@ -494,6 +499,8 @@
     "autoLaunchFailed": "Failed to set auto-launch",
     "minimizeToTray": "Minimize to tray on close",
     "minimizeToTrayDescription": "When checked, clicking the close button will hide to system tray, otherwise the app will exit directly.",
+    "useAppWindowControls": "Enable app-level window controls",
+    "useAppWindowControlsDescription": "Use built-in minimize, maximize/restore, and close buttons in the app header.",
     "enableClaudePluginIntegration": "Apply to Claude Code extension",
     "enableClaudePluginIntegrationDescription": "When enabled, the VS Code Claude Code extension provider will switch with this app",
     "skipClaudeOnboarding": "Skip Claude Code first-run confirmation",

src/i18n/locales/ja.json

@@ -91,7 +91,11 @@
     "switchToChinese": "中国語に切り替え",
     "switchToEnglish": "英語に切り替え",
     "enterEditMode": "編集モードに入る",
-    "exitEditMode": "編集モードを終了"
+    "exitEditMode": "編集モードを終了",
+    "windowMinimize": "ウィンドウを最小化",
+    "windowMaximize": "ウィンドウを最大化",
+    "windowRestore": "ウィンドウを元に戻す",
+    "windowClose": "ウィンドウを閉じる"
   },
   "provider": {
     "tabProvider": "プロバイダー",
@@ -201,7 +205,8 @@
     "openclawDefaultModelSet": "デフォルトモデルに設定しました",
     "openclawDefaultModelSetFailed": "デフォルトモデルの設定に失敗しました",
     "openclawNoModels": "モデルが設定されていません",
-    "backfillWarning": "切り替え成功しましたが、前のプロバイダーへの設定保存に失敗しました"
+    "backfillWarning": "切り替え成功しましたが、前のプロバイダーへの設定保存に失敗しました",
+    "windowControlFailed": "ウィンドウ操作に失敗しました: {{error}}"
   },
   "confirm": {
     "deleteProvider": "プロバイダーを削除",
@@ -494,6 +499,8 @@
     "autoLaunchFailed": "自動起動の設定に失敗しました",
     "minimizeToTray": "閉じるときトレイへ最小化",
     "minimizeToTrayDescription": "チェックすると閉じるボタンでトレイに隠し、オフならアプリを終了します。",
+    "useAppWindowControls": "アプリ内ウィンドウボタンを有効化",
+    "useAppWindowControlsDescription": "有効にすると、アプリヘッダーに最小化・最大化/復元・閉じるボタンを表示します。",
     "enableClaudePluginIntegration": "Claude Code 拡張に適用",
     "enableClaudePluginIntegrationDescription": "オンにすると VS Code の Claude Code 拡張のプロバイダーも同期します",
     "skipClaudeOnboarding": "Claude Code の初回確認をスキップ",

src/i18n/locales/zh.json

@@ -91,7 +91,11 @@
     "switchToChinese": "切换到中文",
     "switchToEnglish": "切换到英文",
     "enterEditMode": "进入编辑模式",
-    "exitEditMode": "退出编辑模式"
+    "exitEditMode": "退出编辑模式",
+    "windowMinimize": "最小化窗口",
+    "windowMaximize": "最大化窗口",
+    "windowRestore": "还原窗口",
+    "windowClose": "关闭窗口"
   },
   "provider": {
     "tabProvider": "供应商",
@@ -201,7 +205,8 @@
     "openclawDefaultModelSet": "已设为默认模型",
     "openclawDefaultModelSetFailed": "设置默认模型失败",
     "openclawNoModels": "该供应商没有配置模型",
-    "backfillWarning": "切换成功，但旧供应商配置回填失败，您手动修改的配置可能未保存"
+    "backfillWarning": "切换成功，但旧供应商配置回填失败，您手动修改的配置可能未保存",
+    "windowControlFailed": "窗口控制失败：{{error}}"
   },
   "confirm": {
     "deleteProvider": "删除供应商",
@@ -494,6 +499,8 @@
     "autoLaunchFailed": "设置开机自启失败",
     "minimizeToTray": "关闭时最小化到托盘",
     "minimizeToTrayDescription": "勾选后点击关闭按钮会隐藏到系统托盘，取消则直接退出应用。",
+    "useAppWindowControls": "启用应用级窗口按钮",
+    "useAppWindowControlsDescription": "开启后使用应用自建的最小化、最大化/还原、关闭按钮；关闭后沿用系统窗口模式。",
     "enableClaudePluginIntegration": "应用到 Claude Code 插件",
     "enableClaudePluginIntegrationDescription": "开启后 Vscode Claude Code 插件的供应商将随本软件切换",
     "skipClaudeOnboarding": "跳过 Claude Code 初次安装确认",