pre-capture lock screen screenshots via hidden window and ScreenshotService

shell/lock/Lock.qml

@@ -20,12 +20,21 @@ Scope {
         lock: _lock
     }
 
+    // Capture screenshots before locking, with timeout for security
+    Timer {
+        id: _lockTimeout
+        interval: 150
+        onTriggered: _lock.locked = true
+    }
+
     Connections {
         target: S.LockService
 
         function onLockRequested() {
-            if (S.LockService.enabled)
-                _lock.locked = true;
+            if (!S.LockService.enabled)
+                return;
+            S.ScreenshotService.capture(Quickshell.screens.length);
+            _lockTimeout.start();
         }
 
         function onUnlockRequested() {
@@ -39,6 +48,17 @@ Scope {
         }
     }
 
+    Connections {
+        target: S.ScreenshotService
+
+        function onCaptureComplete() {
+            if (_lockTimeout.running) {
+                _lockTimeout.stop();
+                _lock.locked = true;
+            }
+        }
+    }
+
     Connections {
         target: _lock