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.cpp

@@ -0,0 +1,69 @@
+/*
+    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
+*/
+
+#include "mainwindow.h"
+
+#include <QTabWidget>
+
+#include "dynamictreemodel.h"
+
+#include "breadcrumbdirectionwidget.h"
+#include "breadcrumbnavigationwidget.h"
+#include "breadcrumbswidget.h"
+#include "checkablewidget.h"
+#include "descendantpmwidget.h"
+#include "selectionpmwidget.h"
+// #include "statesaverwidget.h"
+#include "descendantqmltree.h"
+#include "proxyitemselectionwidget.h"
+#include "proxymodeltestwidget.h"
+#ifdef QT_QML_LIB
+#include "reparentingpmwidget.h"
+#endif
+#include "kidentityproxymodelwidget.h"
+#include "lessthanwidget.h"
+#include "matchcheckingwidget.h"
+#ifdef QT_QUICKWIDGETS_LIB
+#include "selectioninqmlwidget.h"
+#endif
+
+MainWindow::MainWindow()
+    : QMainWindow()
+{
+    QTabWidget *tabWidget = new QTabWidget(this);
+
+    tabWidget->addTab(new MatchCheckingWidget(), QStringLiteral("Match Checking PM"));
+    tabWidget->addTab(new DescendantProxyModelWidget(), QStringLiteral("descendant PM"));
+    tabWidget->addTab(new SelectionProxyWidget(), QStringLiteral("selection PM"));
+#ifdef QT_QUICKWIDGETS_LIB
+    tabWidget->addTab(new SelectionInQmlWidget(), QStringLiteral("selection PM in QML"));
+#endif
+    tabWidget->addTab(new KIdentityProxyModelWidget(), QStringLiteral("Identity PM"));
+    tabWidget->addTab(new CheckableWidget(), QStringLiteral("Checkable"));
+    tabWidget->addTab(new BreadcrumbsWidget(), QStringLiteral("Breadcrumbs"));
+    tabWidget->addTab(new BreadcrumbNavigationWidget(), QStringLiteral("Breadcrumb Navigation"));
+    tabWidget->addTab(new BreadcrumbDirectionWidget(), QStringLiteral("Breadcrumb Direction"));
+    tabWidget->addTab(new ProxyItemSelectionWidget(), QStringLiteral("Proxy Item selection"));
+#ifdef QT_QML_LIB
+    tabWidget->addTab(new ReparentingProxyModelWidget(), QStringLiteral("reparenting PM"));
+#endif
+#ifdef QT_QUICKWIDGETS_LIB
+    tabWidget->addTab(new DescendantQmlTreeWidget(), QStringLiteral("QML Trees"));
+#endif
+    tabWidget->addTab(new LessThanWidget(), QStringLiteral("Less Than"));
+    tabWidget->addTab(new ProxyModelTestWidget(), QStringLiteral("Proxy Model Test"));
+    //   tabWidget->addTab(new StateSaverWidget(), "State Saver Test");
+
+    setCentralWidget(tabWidget);
+}
+
+MainWindow::~MainWindow()
+{
+}
+
+#include "moc_mainwindow.cpp"