Review found six walls whose outlines bowed up to 0.0115 units out between
corners. The simplifier now checks the whole outline against a 0.01
envelope around the old wall and keeps the wall as it was otherwise; four
models change. The Haven hole test now also checks an agent placed in the
hole stays there, which fails if a wall grows into it.

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