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-kwidgetsaddons/source/src/kmessageboxnotifyinterface.h

@@ -0,0 +1,35 @@
+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 2013 Aurélien Gâteau <agateau@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#ifndef KMESSAGEBOXNOTIFYINTERFACE_H
+#define KMESSAGEBOXNOTIFYINTERFACE_H
+
+#include "kmessagebox.h"
+#include <qmetatype.h>
+
+/**
+ * @internal
+ * Used internally by KMessageBox, implemented by plugin, for dynamic dependency on KNotification.
+ */
+class KMessageBoxNotifyInterface
+{
+public:
+    KMessageBoxNotifyInterface()
+    {
+    }
+    virtual ~KMessageBoxNotifyInterface()
+    {
+    }
+
+    virtual void sendNotification(QMessageBox::Icon notificationType, const QString &message, QWidget *parent) = 0;
+};
+
+Q_DECLARE_METATYPE(KMessageBoxNotifyInterface *)
+
+#define KMESSAGEBOXNOTIFY_PROPERTY "KMessageBoxNotify"
+
+#endif