I tried to plug into gtk4 just for it to create a dummy window for me, idea being that then I don't need to deal with any of this lack-of-server-side-decoration business.

Well that presents its own problems, the wayland surface from the gtk4 window includes the shadow and decorations, also the size requested on start includes those too?? so I always get a smaller "window area" than expected, and I guess I now need to find that offset too somehow 🤔

Many hoops just to have window controls 😡