forked from 1b-agent/fieldcraft-upstream
The boundary's 'at' is a box face or an obstacle body and face (NameOr); the domain's obstacle faces are rows of a face and its wall condition (#449). Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo