Full external code review of v0.10.0 against all math-critical headers
(direct source read, not automated scan). Documents 5 open bugs/API errors,
3 test gaps inherited from java-port-audit.md, 1 architectural CI risk,
and 5 minor findings. Each finding is self-contained with file+line
references, a concrete fix proposal, and acceptance criteria so a new
session can pick up any single finding without prior context.
Key findings:
- FINDING-A (critical): face_energy() wrong for mixed ideal/hyper-ideal configs
- FINDING-B (medium): Gauss–Bonnet API conceptually wrong for HyperIdeal
- FINDING-C (medium): cotangent formula in euclidean_hessian.hpp header is wrong
- FINDING-D (medium): DOF-assignment doc falsely claims "pin before" works
- FINDING-E (medium): cp_euclidean gradient_check uses absolute not relative error
- FINDING-F/G/H: three open test gaps from java-port-audit.md
- FINDING-I (arch): 246/272 CGAL tests not gated in CI
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
