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/descendantpmwidget.h

@@ -0,0 +1,45 @@
+/*
+    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 DESCENDANTPM_WIDGET_H
+#define DESCENDANTPM_WIDGET_H
+
+#include <QWidget>
+
+class DynamicTreeModel;
+class QTreeView;
+class QLineEdit;
+class QItemSelectionModel;
+
+class KDescendantsProxyModel;
+class KSelectionProxyModel;
+
+class ModelEventLogger;
+
+class DescendantProxyModelWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    DescendantProxyModelWidget(QWidget *parent = nullptr);
+    ~DescendantProxyModelWidget() override;
+
+protected Q_SLOTS:
+    void doMatch(const QString &matchData);
+    void refreshMatch();
+
+private:
+    DynamicTreeModel *m_rootModel;
+    ModelEventLogger *m_eventLogger;
+    KDescendantsProxyModel *m_descProxyModel;
+    KSelectionProxyModel *m_selectionProxyModel;
+    QItemSelectionModel *m_itemSelectionModel;
+    QTreeView *m_descView;
+    QLineEdit *m_lineEdit;
+};
+
+#endif