Fix decoration drift during animated transitions; checkpoint IPC/global-menu/output-management work

Border/titlebar decoration was built from Window.geometry (the animation's
final target) in both wayland backends' render loops, while sync_geometry
already draws a window's actual content at window_anims' interpolated rect
during any maximize/fullscreen/open-slide tween. Border and content read two
different rectangles for the whole transition, so the border visibly
detached from the window it was outlining - reported as "borders aren't
flush." Both udev.rs and winit.rs now read the same animated rect for
titlebar placement, border-strip placement, and the occlusion test against
later windows in stacking order. Verified: cargo build --workspace, cargo
clippy (0 new warnings), cargo test -p srdwm-core (111/111).

Also checkpoints substantial protocol/IPC work from prior sessions that had
accumulated uncommitted: gtk-shell1 support (gtk_shell.rs, the vendored
gtk-shell.xml, xwayland.rs's X11-side mirror) backing the global app menu;
zwlr_foreign_toplevel_manager_v1 (foreign_toplevel.rs) broadcasting distinct
maximized/minimized/fullscreen/activated state per window; output_management
(ext-output-management + layer-shell exclusive-zone reservation tracking);
workspace.rs and context_menu.rs; a Unix-socket IPC crate (platform/src/
ipc.rs) and a `srd` control-CLI crate (crates/ctl); xkb_config.rs; and a
theme module (core/src/theme.rs). A peer session working the AGS shell
concurrently verified several of these live against a running srdwm: the
global menu rendering a real app's File/Edit menu over gtk-shell1, and
foreign-toplevel correctly reporting maximized and fullscreen as independent,
non-simultaneous states with the geometry each implies (maximize stops at a
reserved top bar and past a dock; fullscreen reaches the true monitor edge).

1 files changed, 116 insertions, 0 deletions

diff --git a/crates/wayland/protocols/gtk-shell.xml b/crates/wayland/protocols/gtk-shell.xml
new file mode 100644
index 0000000..f514478
--- /dev/null
+++ b/crates/wayland/protocols/gtk-shell.xml
@@ -0,0 +1,116 @@
+<protocol name="gtk">
+
+  <interface name="gtk_shell1" version="7">
+    <description summary="gtk specific extensions">
+      gtk_shell is a protocol extension providing additional features for
+      clients implementing it.
+    </description>
+
+    <enum name="capability">
+      <entry name="global_app_menu" value="1"/>
+      <entry name="global_menu_bar" value="2"/>
+      <entry name="desktop_icons" value="3"/>
+    </enum>
+
+    <event name="capabilities">
+      <arg name="capabilities" type="uint"/>
+    </event>
+
+    <request name="get_gtk_surface">
+      <arg name="gtk_surface" type="new_id" interface="gtk_surface1"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+    </request>
+
+    <request name="set_startup_id">
+      <arg name="startup_id" type="string" allow-null="true"/>
+    </request>
+
+    <request name="system_bell">
+      <arg name="surface" type="object" interface="gtk_surface1" allow-null="true"/>
+    </request>
+
+    <!-- Version 3 additions -->
+    <request name="notify_launch" since="3">
+      <arg name="startup_id" type="string"/>
+    </request>
+
+    <!-- Version 6 does not add new API, but asserts that surface offsets are implemented -->
+  </interface>
+
+  <interface name="gtk_surface1" version="7">
+    <request name="set_dbus_properties">
+      <arg name="application_id" type="string" allow-null="true"/>
+      <arg name="app_menu_path" type="string" allow-null="true"/>
+      <arg name="menubar_path" type="string" allow-null="true"/>
+      <arg name="window_object_path" type="string" allow-null="true"/>
+      <arg name="application_object_path" type="string" allow-null="true"/>
+      <arg name="unique_bus_name" type="string" allow-null="true"/>
+    </request>
+
+    <request name="set_modal"/>
+    <request name="unset_modal"/>
+
+    <request name="present">
+      <arg name="time" type="uint"/>
+    </request>
+
+    <!-- Version 2 additions -->
+
+    <enum name="state">
+      <entry name="tiled" value="1"/>
+
+      <entry name="tiled_top" value="2" since="2" />
+      <entry name="tiled_right" value="3" since="2" />
+      <entry name="tiled_bottom" value="4" since="2" />
+      <entry name="tiled_left" value="5"  since="2" />
+    </enum>
+
+    <enum name="edge_constraint" since="2">
+      <entry name="resizable_top" value="1"/>
+      <entry name="resizable_right" value="2"/>
+      <entry name="resizable_bottom" value="3"/>
+      <entry name="resizable_left" value="4"/>
+    </enum>
+
+    <event name="configure">
+      <arg name="states" type="array"/>
+    </event>
+
+    <event name="configure_edges" since="2">
+      <arg name="constraints" type="array"/>
+    </event>
+
+    <!-- Version 3 additions -->
+    <request name="request_focus" since="3">
+      <arg name="startup_id" type="string" allow-null="true"/>
+    </request>
+
+    <!-- Version 4 additions -->
+    <request name="release" type="destructor" since="4"/>
+
+    <!-- Version 5 additions -->
+    <enum name="gesture" since="5">
+      <entry name="double_click" value="1"/>
+      <entry name="right_click" value="2"/>
+      <entry name="middle_click" value="3"/>
+    </enum>
+
+    <enum name="error" since="5">
+      <entry name="invalid_gesture" value="0"/>
+    </enum>
+
+    <request name="titlebar_gesture" since="5">
+      <arg name="serial" type="uint"/>
+      <arg name="seat" type="object" interface="wl_seat"/>
+      <arg name="gesture" type="uint" enum="gesture"/>
+    </request>
+
+    <!-- Version 6 does not add new API, but asserts that surface offsets are implemented -->
+
+    <request name="set_a11y_properties" since="7">
+      <arg name="a11y_dbus_name" type="string" />
+      <arg name="toplevel_object_path" type="string" />
+    </request>
+  </interface>
+
+</protocol>