[feat] add lock screen on disconnect option, refs #125

apps/desktop/src/common/screen_lock.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-25
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _SCREEN_LOCK_H_
+#define _SCREEN_LOCK_H_
+
+namespace crossdesk {
+
+// Called on the application thread. True means the OS accepted the request,
+// not that the asynchronous transition to the lock screen has finished.
+bool LockScreen();
+
+}  // namespace crossdesk
+
+#endif