Interface KernelRepairOps

Fix face orientations for consistent normals. Returns fix count.

Fix self-intersections in a wire.

Run ShapeFix_Shape on a shape (fixes orientation, etc.).

Check if a shape is topologically and geometrically valid.

Uses relaxed validation when available — accepts NURBS approximation tolerances that strict mode would flag.

Cross-kernel note: OCCT uses BRepCheck_Analyzer (no relaxed variant). brepkit uses validateSolidRelaxed().

Strict validation — fails on any geometric or topological issue, including NURBS approximation gaps.

Cross-kernel note: OCCT's BRepCheck_Analyzer is inherently strict, so this is identical to isValid. brepkit uses validateSolid() (strict).

Merge coincident vertices within tolerance. Returns merge count.

Remove zero-length (degenerate) edges. Returns removal count.