Function classify_point_robust 

pub fn classify_point_robust(
    topo: &Topology,
    solid: SolidId,
    point: Point3,
    deflection: f64,
    tolerance: f64,
) -> Result<PointClassification, OperationsError>

Robust point classification combining winding numbers and ray casting.

Tries generalized winding numbers first (more robust to mesh defects), then falls back to analytic ray casting if the winding number is ambiguous (within 0.1 of the 0.5 threshold).

Errors

Returns an error if the solid or its faces are invalid.