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.cpp

@@ -0,0 +1,42 @@
+/*
+    SPDX-FileCopyrightText: 2002 Simon Hausmann <hausmann@kde.org>
+    SPDX-FileCopyrightText: 2005-2006 David Faure <faure@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "kmainwindowtest.h"
+
+#include <QApplication>
+#include <QLabel>
+#include <QMenuBar>
+#include <QStatusBar>
+#include <QTimer>
+
+MainWindow::MainWindow()
+{
+    QTimer::singleShot(2 * 1000, this, &MainWindow::showMessage);
+
+    setCentralWidget(new QLabel(QStringLiteral("foo"), this));
+
+    menuBar()->addAction(QStringLiteral("hi"));
+}
+
+void MainWindow::showMessage()
+{
+    statusBar()->show();
+    statusBar()->showMessage(QStringLiteral("test"));
+}
+
+int main(int argc, char **argv)
+{
+    QApplication::setApplicationName(QStringLiteral("kmainwindowtest"));
+    QApplication app(argc, argv);
+
+    MainWindow *mw = new MainWindow; // deletes itself when closed
+    mw->show();
+
+    return app.exec();
+}
+
+#include "moc_kmainwindowtest.cpp"