Keyboard-driven mouse navigation overlay for Wayland using
wlr-layer-shell and wlr-virtual-pointer. Two-key grid selection,
click/double-click/right-click/drag, three-tier cursor nudge
(hjkl/HJKL/Ctrl+hjkl), and scroll passthrough.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
