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-kitemmodels/source/tests/proxymodeltestapp/mainwindow.h

@@ -0,0 +1,36 @@
+/*
+    This file is part of the proxy model test suite.
+
+    SPDX-FileCopyrightText: 2009 Stephen Kelly <steveire@gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
+#ifndef TESTAPPLICATION_H
+#define TESTAPPLICATION_H
+
+#include <QMainWindow>
+
+class DynamicTreeModel;
+
+//@cond PRIVATE
+
+/**
+ * @internal
+ * Test Application for proxy models.
+ */
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+public:
+    MainWindow();
+    ~MainWindow() override;
+
+private:
+    DynamicTreeModel *m_rootModel;
+    //   ContactsWidget* cw;
+};
+
+//@endcond
+
+#endif