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/kwin/source/src/scripting/desktopbackgrounditem.h

@@ -0,0 +1,59 @@
+/*
+    SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#pragma once
+
+#include "windowthumbnailitem.h"
+
+namespace KWin
+{
+
+class Output;
+class VirtualDesktop;
+
+/**
+ * The DesktopBackgroundItem type is a convenience helper that represents the desktop
+ * background on the specified screen, virtual desktop, and activity.
+ */
+class DesktopBackgroundItem : public WindowThumbnailItem
+{
+    Q_OBJECT
+    Q_PROPERTY(QString outputName READ outputName WRITE setOutputName NOTIFY outputChanged)
+    Q_PROPERTY(KWin::Output *output READ output WRITE setOutput NOTIFY outputChanged)
+    Q_PROPERTY(QString activity READ activity WRITE setActivity NOTIFY activityChanged)
+    Q_PROPERTY(KWin::VirtualDesktop *desktop READ desktop WRITE setDesktop NOTIFY desktopChanged)
+
+public:
+    explicit DesktopBackgroundItem(QQuickItem *parent = nullptr);
+
+    void componentComplete() override;
+
+    QString outputName() const;
+    void setOutputName(const QString &name);
+
+    Output *output() const;
+    void setOutput(Output *output);
+
+    VirtualDesktop *desktop() const;
+    void setDesktop(VirtualDesktop *desktop);
+
+    QString activity() const;
+    void setActivity(const QString &activity);
+
+Q_SIGNALS:
+    void outputChanged();
+    void desktopChanged();
+    void activityChanged();
+
+private:
+    void updateWindow();
+
+    Output *m_output = nullptr;
+    VirtualDesktop *m_desktop = nullptr;
+    QString m_activity;
+};
+
+} // namespace KWin