feat: 增加自动下载更新包提示文本

src/MaaWpfGui/Res/Localizations/en-us.xaml

@@ -348,6 +348,8 @@ To customize rotation schedules, please use ｢{key=InfrastModeCustom}｣.</syst
     <system:String x:Key="UpdateAutoCheck">Scheduled Update Check</system:String>
     <system:String x:Key="UpdateAutoCheckTip">In-game 00:00 / 18:00 (Server local time 04:00 / 22:00)</system:String>
     <system:String x:Key="UpdateAutoDownload">Auto Download Update</system:String>
+    <system:String x:Key="UpdateAutoDownloadTip" xml:space="preserve">When disabled, detected updates (including manually triggered ｢{key=UpdateCheckNow}｣) will no longer download automatically. Instead, a system notification with a download link will be shown, allowing you to download the package and drag it into MAA manually.
+If system notifications are turned off, an in-app notification will be used instead, though it does not provide an interactive download button.</system:String>
     <system:String x:Key="AutoInstallUpdatePackage">Auto Install Update</system:String>
     <system:String x:Key="ShowUpdaterConsole">Show updater console output during update</system:String>
     <system:String x:Key="ShowUpdaterProgress">Show updater progress window</system:String>

src/MaaWpfGui/Res/Localizations/ja-jp.xaml

@@ -348,6 +348,8 @@
     <system:String x:Key="UpdateAutoCheck">定期的な更新チェック</system:String>
     <system:String x:Key="UpdateAutoCheckTip">ゲーム内 00:00 / 18:00（サーバー現地時間 04:00 / 22:00）</system:String>
     <system:String x:Key="UpdateAutoDownload">自動アップデート</system:String>
+    <system:String x:Key="UpdateAutoDownloadTip" xml:space="preserve">オフの場合、更新の検出時（手動で ｢{key=UpdateCheckNow}｣ を実行した場合を含む）に自動ダウンロードは行われず、ダウンロードリンク付きのシステム通知のみが表示されます。リンク先から更新パッケージをダウンロードし、MAA にドラッグして手動更新できます。
+システム通知が無効な場合はアプリ内通知に切り替わりますが、アプリ内通知には操作可能なダウンロードボタンは提供されません。</system:String>
     <system:String x:Key="AutoInstallUpdatePackage">自動インストール更新</system:String>
     <system:String x:Key="ShowUpdaterConsole">更新中にアップデーターのコンソール出力を表示</system:String>
     <system:String x:Key="ShowUpdaterProgress">アップデーターの進行状況ウィンドウを表示</system:String>

src/MaaWpfGui/Res/Localizations/ko-kr.xaml

@@ -348,6 +348,8 @@
     <system:String x:Key="UpdateAutoCheck">일정 시간마다 업데이트 확인</system:String>
     <system:String x:Key="UpdateAutoCheckTip">게임 내 00:00 / 18:00 (서버 현지 시간 04:00 / 22:00)</system:String>
     <system:String x:Key="UpdateAutoDownload">업데이트 자동 다운로드</system:String>
+    <system:String x:Key="UpdateAutoDownloadTip" xml:space="preserve">체크 해제 시, 업데이트 감지 시（수동으로 ｢{key=UpdateCheckNow}｣ 실행 포함）자동 다운로드가 중지되고 다운로드 링크가 포함된 시스템 알림만 표시됩니다. 링크에서 업데이트 패키지를 직접 다운로드한 후 MAA에 끌어다 놓아 수동으로 업데이트할 수 있습니다.
+시스템 알림이 꺼져 있는 경우 앱 내 알림으로 전환되지만, 앱 내 알림에는 조작 가능한 다운로드 버튼이 제공되지 않습니다.</system:String>
     <system:String x:Key="AutoInstallUpdatePackage">업데이트 패키지 자동 설치</system:String>
     <system:String x:Key="ShowUpdaterConsole">업데이트 중 업데이터 콘솔 출력 표시</system:String>
     <system:String x:Key="ShowUpdaterProgress">업데이터 진행 창 표시</system:String>

src/MaaWpfGui/Res/Localizations/zh-cn.xaml

@@ -348,6 +348,8 @@
     <system:String x:Key="UpdateAutoCheck">定时检查更新</system:String>
     <system:String x:Key="UpdateAutoCheckTip">游戏内 00:00 / 18:00（对应服务器当地时间 04:00 / 22:00）</system:String>
     <system:String x:Key="UpdateAutoDownload">自动下载更新包</system:String>
+    <system:String x:Key="UpdateAutoDownloadTip" xml:space="preserve">取消勾选后，检测到新版本时（包括手动触发 ｢{key=UpdateCheckNow}｣）将不再自动下载，仅通过系统通知提示并附带下载链接，可自行下载更新包后拖入 MAA 完成更新。
+若系统通知已关闭，则改为软件内通知，但软件内通知不提供可交互的下载按钮。</system:String>
     <system:String x:Key="AutoInstallUpdatePackage">自动安装更新包</system:String>
     <system:String x:Key="ShowUpdaterConsole">显示更新程序控制台输出</system:String>
     <system:String x:Key="ShowUpdaterProgress">显示更新程序进度窗口</system:String>

src/MaaWpfGui/Res/Localizations/zh-tw.xaml

@@ -348,6 +348,8 @@
     <system:String x:Key="UpdateAutoCheck">定時檢查更新</system:String>
     <system:String x:Key="UpdateAutoCheckTip">遊戲內 00:00 / 18:00（對應伺服器當地時間 04:00 / 22:00）</system:String>
     <system:String x:Key="UpdateAutoDownload">自動下載更新檔</system:String>
+    <system:String x:Key="UpdateAutoDownloadTip" xml:space="preserve">取消勾選後，偵測到新版本時（包含手動觸發 ｢{key=UpdateCheckNow}｣）將不再自動下載，僅透過系統通知提示並附上下載連結，可自行下載更新檔後拖入 MAA 完成更新。
+若系統通知已關閉，則改為軟體內通知，但軟體內通知不提供可互動的下載按鈕。</system:String>
     <system:String x:Key="AutoInstallUpdatePackage">自動安裝更新檔</system:String>
     <system:String x:Key="ShowUpdaterConsole">顯示更新程式主控台輸出</system:String>
     <system:String x:Key="ShowUpdaterProgress">顯示更新程式進度視窗</system:String>

src/MaaWpfGui/Views/UserControl/Settings/VersionUpdateSettingsUserControl.xaml

@@ -59,12 +59,14 @@
                         IsChecked="{Binding UpdateAutoCheck}" />
                     <controls:TooltipBlock TooltipText="{DynamicResource UpdateAutoCheckTip}" />
                 </StackPanel>
-                <CheckBox
-                    Margin="8"
-                    HorizontalAlignment="Left"
-                    VerticalAlignment="Center"
-                    Content="{DynamicResource UpdateAutoDownload}"
-                    IsChecked="{Binding AutoDownloadUpdatePackage}" />
+                <StackPanel Margin="8" Orientation="Horizontal">
+                    <CheckBox
+                        HorizontalAlignment="Left"
+                        VerticalAlignment="Center"
+                        Content="{DynamicResource UpdateAutoDownload}"
+                        IsChecked="{Binding AutoDownloadUpdatePackage}" />
+                    <controls:TooltipBlock TooltipText="{DynamicResource UpdateAutoDownloadTip}" />
+                </StackPanel>
                 <CheckBox
                     Margin="8"
                     HorizontalAlignment="Left"