Adds the B-rep graph selection primitives (OCCTMCP#38).
- graph_select — local adjacency/selection on a BREP path: face-neighbors (+ convexity + shared-edge count via the kernel AAG), edge-faces, vertex-edges, face-adjacency (full gAAG), edges-class (boundary|non-manifold|seam|degenerate). The selection/pointer primitive without dumping the whole graph.
- graph_ml — now augments its output with a convexity-attributed faceAdjacency block (kernel-direct AAG), completing the graph_ml half of #38.
Bumps the OCCTSwiftScripts pin to v1.2.0. Builds against OCCTSwift 1.7.1 (OCCT 8.0.0p1). (#39, closes #38)