forked from 1b-agent/fieldcraft-upstream
Every tied interface between cells of one design body carries `why`: the tet cell (and why auto fell back), the reason the body's cells did not sweep together, or the cell meshed alone by its method; so an agent knows which cut or method to change. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo