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-kwindowsystem/source/tests/kwaylandextrastest.cpp

@@ -0,0 +1,125 @@
+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 2023 Nicolas Fella <nicolas.fella@gmx.de>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
+#include <kwindowsystem.h>
+
+#include <QApplication>
+#include <QDialog>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QPushButton>
+
+#include <kwaylandextras.h>
+
+class Window : public QWidget
+{
+public:
+    Window();
+
+private:
+    void updateSerial();
+    void requestToken();
+
+    void exportWindow();
+    void unexportWindow();
+    void setExportedHandle(const QString &handle);
+
+    QLabel *m_serialLabel;
+    QLabel *m_tokenLabel;
+    QLabel *m_exportedLabel;
+};
+
+Window::Window()
+{
+    QPushButton *serialButton = new QPushButton("Update serial");
+    connect(serialButton, &QPushButton::clicked, this, &Window::updateSerial);
+
+    QPushButton *tokenButton = new QPushButton("Request token");
+    connect(tokenButton, &QPushButton::clicked, this, &Window::requestToken);
+
+    m_serialLabel = new QLabel;
+    m_serialLabel->setText("Last input serial: " + QString::number(KWaylandExtras::self()->lastInputSerial(windowHandle())));
+
+    m_tokenLabel = new QLabel;
+    m_tokenLabel->setTextInteractionFlags(Qt::TextSelectableByMouse | Qt::TextSelectableByKeyboard);
+    m_tokenLabel->setText("XDG actvation token:");
+
+    QHBoxLayout *exportLayout = new QHBoxLayout;
+
+    QPushButton *exportButton = new QPushButton("Export window");
+    connect(exportButton, &QPushButton::clicked, this, &Window::exportWindow);
+
+    QPushButton *unexportButton = new QPushButton("Unexport window");
+    connect(unexportButton, &QPushButton::clicked, this, &Window::unexportWindow);
+
+    m_exportedLabel = new QLabel;
+    m_exportedLabel->setTextInteractionFlags(Qt::TextSelectableByMouse | Qt::TextSelectableByKeyboard);
+    setExportedHandle(QString());
+
+    QVBoxLayout *layout = new QVBoxLayout(this);
+    layout->addWidget(serialButton);
+    layout->addWidget(m_serialLabel);
+    layout->addWidget(tokenButton);
+    layout->addWidget(m_tokenLabel);
+
+    exportLayout->addWidget(exportButton);
+    exportLayout->addWidget(unexportButton);
+    layout->addLayout(exportLayout);
+    layout->addWidget(m_exportedLabel);
+}
+
+void Window::updateSerial()
+{
+    m_serialLabel->setText("Last input serial: " + QString::number(KWaylandExtras::self()->lastInputSerial(windowHandle())));
+}
+
+void Window::requestToken()
+{
+    connect(
+        KWaylandExtras::self(),
+        &KWaylandExtras::xdgActivationTokenArrived,
+        this,
+        [this](int /*serial*/, const QString &token) {
+            m_tokenLabel->setText("XDG actvation token: " + token);
+        },
+        Qt::SingleShotConnection);
+
+    KWaylandExtras::requestXdgActivationToken(windowHandle(), KWaylandExtras::self()->lastInputSerial(windowHandle()), QString());
+}
+
+void Window::exportWindow()
+{
+    connect(
+        KWaylandExtras::self(),
+        &KWaylandExtras::windowExported,
+        this,
+        [this](QWindow *window, const QString &handle) {
+            Q_UNUSED(window);
+            setExportedHandle(handle);
+        },
+        Qt::SingleShotConnection);
+    KWaylandExtras::exportWindow(windowHandle());
+}
+
+void Window::unexportWindow()
+{
+    KWaylandExtras::unexportWindow(windowHandle());
+    setExportedHandle(QString());
+}
+
+void Window::setExportedHandle(const QString &handle)
+{
+    m_exportedLabel->setText("XDG foreign handle: " + handle);
+}
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+    Window window;
+    window.show();
+    return app.exec();
+}