- Listen for set_hints signal on XWayland surfaces so hints
(including dockapp initial_state) are available at map time.
- Remove the hardcoded 640x480 initial configure — let clients
request their own geometry via request_configure.
- Link xcb for future dockapp icon_window operations.
The XWayland backend was not listening for request_fullscreen events
from wlr_xwayland_surface. Wine/Proton games that request fullscreen
via _NET_WM_STATE_FULLSCREEN had the signal silently ignored, leaving
them in a tiny window.
Add handle_xwayland_request_fullscreen listener that calls
wFullscreenWindow/wUnfullscreenWindow, matching the XDG toplevel path.
Enables screen locker clients (swaylock, waylock) to lock the
session. On lock: confirms locked state to client. On new_surface:
configures lock surface to cover the output and adds it to the
scene overlay layer. On unlock: clears locked state.
lkn