Deterministic Spherical icosahedron geodesic class-I subdivision, flat-base horizon truncation & exact 3D plane-plane dihedral angle arccos(n1·n2) engine (.dxf, .stl, .pdf, .step) built for Festool, DeWalt, Simpson Strong-Tie, SketchUp — zero-upload ephemeral Wasm RAM execution.
Running ephemeral Wasm verification…