AstralZX
46fe232306
Master/stack tiling with Alt as modifier: Alt+Enter spawns a terminal (kitty), Alt+Q closes, Alt+J/Alt+K cycle focus, click-to-focus. Reads ~/.config/testwm/testwm.conf for terminal/modifier/layout. Verified headless: two clients receive 640x720 master + 640x720 stack configures. Wrapper additions: Cursor motion/button/axis/frame signal hooks, Seat::keyboard_notify_enter, Toplevel::close().