feat(updater): implement auto-install countdown and cancellation for updates (#151)

src/i18n/locales/en/settings.json

@@ -72,13 +72,14 @@
         "description": "Keep ClawX up to date",
         "autoCheck": "Auto-check for updates",
         "autoCheckDesc": "Check for updates on startup",
-        "autoDownload": "Auto-download updates",
-        "autoDownloadDesc": "Download updates in the background",
+        "autoDownload": "Auto-update",
+        "autoDownloadDesc": "Automatically download and install updates",
         "status": {
             "checking": "Checking for updates...",
             "downloading": "Downloading update...",
             "available": "Update available: v{{version}}",
             "downloaded": "Ready to install: v{{version}}",
+            "autoInstalling": "Restarting to install update in {{seconds}}s...",
             "failed": "Update check failed",
             "latest": "You have the latest version",
             "check": "Check for updates to get the latest features"
@@ -88,13 +89,14 @@
             "downloading": "Downloading...",
             "download": "Download Update",
             "install": "Install & Restart",
+            "cancelAutoInstall": "Cancel",
             "retry": "Retry",
             "check": "Check for Updates"
         },
         "currentVersion": "Current Version",
         "whatsNew": "What's New:",
         "errorDetails": "Error Details:",
-        "help": "Updates are downloaded in the background and installed when you restart the app."
+        "help": "When auto-update is enabled, updates are downloaded and installed automatically."
     },
     "advanced": {
         "title": "Advanced",

src/i18n/locales/ja/settings.json

@@ -72,8 +72,31 @@
         "description": "ClawX を最新に保つ",
         "autoCheck": "自動更新チェック",
         "autoCheckDesc": "起動時に更新を確認",
-        "autoDownload": "自動ダウンロード",
-        "autoDownloadDesc": "バックグラウンドで更新をダウンロード"
+        "autoDownload": "自動アップデート",
+        "autoDownloadDesc": "更新を自動的にダウンロードしてインストール",
+        "status": {
+            "checking": "更新を確認中...",
+            "downloading": "更新をダウンロード中...",
+            "available": "更新あり: v{{version}}",
+            "downloaded": "インストール準備完了: v{{version}}",
+            "autoInstalling": "{{seconds}} 秒後に再起動して更新をインストールします...",
+            "failed": "更新の確認に失敗しました",
+            "latest": "最新バージョンです",
+            "check": "更新を確認して最新の機能を入手"
+        },
+        "action": {
+            "checking": "確認中...",
+            "downloading": "ダウンロード中...",
+            "download": "更新をダウンロード",
+            "install": "インストールして再起動",
+            "cancelAutoInstall": "キャンセル",
+            "retry": "再試行",
+            "check": "更新を確認"
+        },
+        "currentVersion": "現在のバージョン",
+        "whatsNew": "更新内容：",
+        "errorDetails": "エラー詳細：",
+        "help": "自動アップデートが有効な場合、更新は自動的にダウンロードされインストールされます。"
     },
     "advanced": {
         "title": "詳細設定",

src/i18n/locales/zh/settings.json

@@ -72,13 +72,14 @@
         "description": "保持 ClawX 最新",
         "autoCheck": "自动检查更新",
         "autoCheckDesc": "启动时检查更新",
-        "autoDownload": "自动下载更新",
-        "autoDownloadDesc": "在后台下载更新",
+        "autoDownload": "自动更新",
+        "autoDownloadDesc": "自动下载并安装更新",
         "status": {
             "checking": "正在检查更新...",
             "downloading": "正在下载更新...",
             "available": "可用更新：v{{version}}",
             "downloaded": "准备安装：v{{version}}",
+            "autoInstalling": "将在 {{seconds}} 秒后重启并安装更新...",
             "failed": "检查更新失败",
             "latest": "您已拥有最新版本",
             "check": "检查更新以获取最新功能"
@@ -88,13 +89,14 @@
             "downloading": "下载中...",
             "download": "下载更新",
             "install": "安装并重启",
+            "cancelAutoInstall": "取消",
             "retry": "重试",
             "check": "检查更新"
         },
         "currentVersion": "当前版本",
         "whatsNew": "更新内容：",
         "errorDetails": "错误详情：",
-        "help": "更新将在后台下载，并在您重启应用时安装。"
+        "help": "开启自动更新后，更新将自动下载并安装。"
     },
     "advanced": {
         "title": "高级",