forked from 1b-agent/fieldcraft-upstream
Meshes that do not tag their element edges with the design's edge names (tet, hex, blocks) left a selected edge with no highlight while the mesh was shown. The edge is now marked along its own polyline, which the scene already draws over the mesh. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo