feat: GPU切换回退保护逻辑

- switchGpu切换前写入备份文件(.gpu-switch-backup)记录之前模式
- init()检测未确认的切换，启动30秒自动回退计时器
- QML弹出'显示是否正常'确认覆盖层，支持手动确认/回退/超时自动回退
- confirmSwitchSuccess()用户确认正常后删除备份
- restoreFromBackup()自动恢复之前模式并发送通知
- primeOffloadEnabled属性检测当前PRIME offload状态
- switchGpu改用environment.d方式，不需要root/pkexec
- 翻译更新：回退确认相关8条新增

translations/org.deepin.ds.graphics-driver_zh_CN.ts

@@ -193,5 +193,45 @@
         <source>Integrated</source>
         <translation>核显</translation>
     </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Display OK?</source>
+        <translation>显示是否正常？</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU mode was changed. If display is abnormal, it will auto-revert in %1s.</source>
+        <translation>GPU 模式已切换。如果显示异常，将在 %1 秒后自动回退。</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Revert</source>
+        <translation>回退</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Display OK</source>
+        <translation>显示正常</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU Mode Switched</source>
+        <translation>GPU 模式已切换</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Switched to %1 mode. Please re-login to take effect.</source>
+        <translation>已切换到 %1 模式，请重新登录生效。</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU Mode Restored</source>
+        <translation>GPU 模式已恢复</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Reverted to %1 mode. Please re-login to take effect.</source>
+        <translation>已恢复到 %1 模式，请重新登录生效。</translation>
+    </message>
 </context>
 </TS>

translations/org.deepin.ds.graphics-driver_zh_TW.ts

@@ -193,5 +193,45 @@
         <source>Integrated</source>
         <translation>核顯</translation>
     </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Display OK?</source>
+        <translation>顯示是否正常？</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU mode was changed. If display is abnormal, it will auto-revert in %1s.</source>
+        <translation>GPU 模式已切換。如果顯示異常，將在 %1 秒後自動回退。</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Revert</source>
+        <translation>回退</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Display OK</source>
+        <translation>顯示正常</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU Mode Switched</source>
+        <translation>GPU 模式已切換</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Switched to %1 mode. Please re-login to take effect.</source>
+        <translation>已切換到 %1 模式，請重新登入生效。</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>GPU Mode Restored</source>
+        <translation>GPU 模式已恢復</translation>
+    </message>
+    <message>
+        <location filename="../package/driverview.qml"/>
+        <source>Reverted to %1 mode. Please re-login to take effect.</source>
+        <translation>已恢復到 %1 模式，請重新登入生效。</translation>
+    </message>
 </context>
 </TS>