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/statesaverwidget.h

@@ -0,0 +1,46 @@
+/*
+    SPDX-FileCopyrightText: 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.net>
+    SPDX-FileContributor: Stephen Kelly <stephen@kdab.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef STATESAVERWIDGET_H
+#define STATESAVERWIDGET_H
+
+#include <QWidget>
+
+#include <KViewStateSaver>
+
+class QTreeView;
+
+class DynamicTreeWidget;
+
+class DynamicTreeStateSaver : public KViewStateSaver
+{
+    Q_OBJECT
+public:
+    DynamicTreeStateSaver(QObject *parent = nullptr);
+
+protected:
+    /* reimp */ QModelIndex indexFromConfigString(const QAbstractItemModel *model, const QString &key) const;
+    /* reimp */ QString indexToConfigString(const QModelIndex &index) const;
+};
+
+class StateSaverWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    StateSaverWidget(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+    ~StateSaverWidget();
+
+private Q_SLOTS:
+    void saveState();
+    void restoreState();
+
+private:
+    DynamicTreeWidget *m_dynamicTreeWidget;
+    QTreeView *m_view;
+};
+
+#endif