forked from 1b-agent/fieldcraft-upstream
Datum planes by principal plane and offset, three points, or point and normal; datum axes by principal axis, two points, or point and direction. geometry.partition cuts the open design by a datum plane and keeps the partition in the model, so geometry.open, file.open and undo cut the design again. Requirements, forms and the Prepare entries are wired; features.md lists them as ready. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo