A PerAxis field kind: one value for every direction, or Per axis ticked
for one per axis. Thermal conductivity and expansion and the point mass
use it instead of a JSON box (#449).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo