4b90438315
P2 — TolerantEdge (ACIS): - TolerantEdge: tube_radius, path_tolerance, is_within_tube, intersects - detect_tolerance_conflicts: VertexInSphere/EdgeInTube/FaceGap - resolve_tolerance_conflicts: auto merge vertices/edges/gaps P2 — .vde Native Format (ACIS): - Binary format: VdeHeader(32B), 6 SerializationSections - save_vde/load_vde: full B-Rep topology + geometry + tolerance + attributes - save_vde_json: debuggable JSON export P2 — Boolean Fallback Ladder (Parasolid): - 4-level cascade: SSI → tolerant → mesh → SDF - Level 4 never fails (SDF + MC mathematical guarantee) - BooleanFallbackResult with per-level diagnostics Total: +~2650 lines across 8 files