Add hexhead collision fixes design spec

Dikirim

11 Maret 2026 pukul 20.15 UTC

Penulis

kamo

Berkomitmen

431a37d

Spec covers three hexhead UX bugs: horizontal bottom-row vertex overlap, bottom-right stacking when dropping without snap, and hexheads ending up behind tool windows due to no-op makeRoom handler. Solution: unified resolveCollisions() resolver + group-aware flyToHomeRow slot-width accumulation.