The shell unit tests that checked geometry become shell rig cases built through
commands: the trough and the pocket whose floors fall 1 deg to a central drain
(the pyramid made as two triangular prisms intersected, in place of
convex_polyhedron; the cavity integrated exactly over the cells where each moved
facet is highest, sharp inner corners as the ladder's tier 09), the box opened at
a bottom rounded R2 and R2.4 (refused: the rim would have no thickness) and R1.5
(built, exact volume), and the plate with a hole through its arc side. Four
action-matrix shells that regressed (issue-616's lid, the ring-cut frame, the
filleted shelled box shelled again, the up-down join) get small cases too. The
ones that fail today are on KNOWN_FAILING with their cause, and the unit tests are
removed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
jyviko
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