Anchor room floors on resize, constrain wandering to a ground zone, add an editable floating name badge on the avatar screen, and let profile demo tools grant 100 test points.
ResizeObserver on the landing LCD drives pet sprite scale while capping LCD height so the hero preview stays proportional on mobile.
Restrict Y to 66–90% and X to 15–85% with bottom-anchored positioning so the avatar stays on grass instead of sky or walls.