An agent on a wall's ink is cast from just outside it. The painter put the
map in place by that nudged origin, at the agent, which shifted the whole
cone and its floor clip by the nudge: on Ascent's B wall about 4 px, so
every edge sat off the drawn walls. The map is now placed by where the
agent really stands; the cone lands where it was cast, a hair off the
apex.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>