3 commits, squashed; the originals stay reachable from tag archive/merge-main-develop.
- d671bbbc1 jyviko: Kernel rig: every registry command has a case or an exemption (kernel-cases --coverage)
- 6701b1c5e jyviko: Docs: how the kernel rig picks its areas, how a new area joins, and the coverage check
- 585789c60 jyviko: Kernel rig: cone cases, a frustum on X and a full cone of negative height with their exact volume, area and centroid, and a zero height refused; a new solids area
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ