0df9e77eac
4 milestones, 16 modules, ~12K lines, ~535 new tests: M1: TrimmedSurface + SSI boolean + topology healing + tolerance system M2: G2/G3 continuity + surface extension + advanced blend + analysis M3: Large assembly LOD + constraint solver + full CAM + direct modeling M4: Industrial formats (JT/XT/SAT/IFC/AP242) + GPU + Python + docs Target: 72% industrial capability (up from 55%), surpass OCCT