Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kxmlgui/source/tests/kmainwindowtest.h

@@ -0,0 +1,22 @@
+/*
+    SPDX-FileCopyrightText: 2002 Simon Hausmann <hausmann@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KMAINWINDOWTEST_H
+#define KMAINWINDOWTEST_H
+
+#include <kmainwindow.h>
+
+class MainWindow : public KMainWindow
+{
+    Q_OBJECT
+public:
+    MainWindow();
+
+private Q_SLOTS:
+    void showMessage();
+};
+
+#endif // KMAINWINDOWTEST_H