The render-kit dungeon host was a flex item in a centered flex container (.rotdis) with
sibling canvases, so it got shrunk + shoved into a corner; and .rotdis canvas has
max-width:100% !important which clamped the camera canvas. Fix: host is now
position:absolute inset:0 (fills #game-display, which is position:relative), and the
canvas overrides max-width via setProperty(..., important). Dungeon now renders centered
on the player in the game area.