3 commits, squashed; the originals stay reachable from tag archive/merge-main-develop.
- 191b2f4c4 jyviko: kernel-ladder: cases.py makes every committed case again
- 977230b7c jyviko: kernel-ladder: tier 04 cases grade their geometry
- 84473f61f jyviko: kernel-ladder: tier 06 grades the threaded boss; both hands and Tr40x14(P7) added
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
jyviko