4 commits, squashed; the originals stay reachable from tag archive/merge-main-develop.
- 1ae748417 jyviko: Robustness: seed 5's edge-only join keeps two bodies, as joins have since 94ee28d5c
- 48d72ba2b jyviko: Convert Mesh: a triangle of no area is dropped, not refused (#4561)
- a0a75dc78 jyviko: Kernel rig: import/4561 passes, off the known-failing list
- beaed5b35 jyviko: Kernel rig: threads/2369 names the tap maker's 6.8 mm drill for M8
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ