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/group.h

@@ -0,0 +1,88 @@
+/*
+    KWin - the KDE window manager
+    This file is part of the KDE project.
+
+    SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
+    SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#pragma once
+
+#include <config-kwin.h>
+#if !KWIN_BUILD_X11
+#error Do not include on non-X11 builds
+#endif
+
+#include "utils/common.h"
+#include <netwm.h>
+
+namespace KWin
+{
+
+class EffectWindowGroup;
+class X11Window;
+
+class Group
+{
+public:
+    Group(xcb_window_t leader);
+    ~Group();
+    xcb_window_t leader() const;
+    const X11Window *leaderClient() const;
+    X11Window *leaderClient();
+    const QList<X11Window *> &members() const;
+    QIcon icon() const;
+    void addMember(X11Window *member);
+    void removeMember(X11Window *member);
+    void gotLeader(X11Window *leader);
+    void lostLeader();
+    void updateUserTime(xcb_timestamp_t time);
+    xcb_timestamp_t userTime() const;
+    void ref();
+    void deref();
+    EffectWindowGroup *effectGroup();
+
+private:
+    void startupIdChanged();
+    QList<X11Window *> _members;
+    X11Window *leader_client;
+    xcb_window_t leader_wid;
+    std::unique_ptr<NETWinInfo> leader_info;
+    xcb_timestamp_t user_time;
+    int refcount;
+    std::unique_ptr<EffectWindowGroup> effect_group;
+};
+
+inline xcb_window_t Group::leader() const
+{
+    return leader_wid;
+}
+
+inline const X11Window *Group::leaderClient() const
+{
+    return leader_client;
+}
+
+inline X11Window *Group::leaderClient()
+{
+    return leader_client;
+}
+
+inline const QList<X11Window *> &Group::members() const
+{
+    return _members;
+}
+
+inline xcb_timestamp_t Group::userTime() const
+{
+    return user_time;
+}
+
+inline EffectWindowGroup *Group::effectGroup()
+{
+    return effect_group.get();
+}
+
+} // namespace