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/autotests/integration/xinerama_test.cpp

@@ -0,0 +1,63 @@
+/*
+    SPDX-FileCopyrightText: 2024 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#include "kwin_wayland_test.h"
+
+#include "core/output.h"
+#include "wayland_server.h"
+#include "workspace.h"
+
+namespace KWin
+{
+
+static const QString s_socketName = QStringLiteral("wayland_test_kwin_xinerama-0");
+
+class XineramaTest : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void initTestCase();
+    void indexToOutput();
+};
+
+void XineramaTest::initTestCase()
+{
+    QVERIFY(waylandServer()->init(s_socketName));
+    kwinApp()->start();
+}
+
+void XineramaTest::indexToOutput()
+{
+    Test::setOutputConfig({
+        Test::OutputInfo{
+            .geometry = QRect(0, 0, 1280, 1024),
+            .scale = 1.5,
+        },
+        Test::OutputInfo{
+            .geometry = QRect(1280, 0, 1280, 1024),
+            .scale = 1.5,
+        },
+    });
+    kwinApp()->setXwaylandScale(1.5);
+
+    // Start Xwayland
+    Test::XcbConnectionPtr c = Test::createX11Connection();
+    QVERIFY(!xcb_connection_has_error(c.get()));
+
+    const auto outputs = workspace()->outputs();
+    QCOMPARE(workspace()->xineramaIndexToOutput(0), outputs.at(0));
+    QCOMPARE(workspace()->xineramaIndexToOutput(1), outputs.at(1));
+
+    workspace()->setOutputOrder({outputs[1], outputs[0]});
+    QCOMPARE(workspace()->xineramaIndexToOutput(0), outputs.at(1));
+    QCOMPARE(workspace()->xineramaIndexToOutput(1), outputs.at(0));
+}
+
+} // namespace KWin
+
+WAYLANDTEST_MAIN(KWin::XineramaTest)
+#include "xinerama_test.moc"