nx_curveskel.nx

nx_curveskel.nx -- SOVEREIGN SKELETON-FIT CLI: extract a curve skeleton (an armature) from a BARE unrigged NXA mesh and write it back as a SKEL section. Pair with nx_boneheat for a full sovereign auto-rig of an unrigged mesh, first byte up: nx_curveskel <mesh.nxa> <rigged.nxa> then nx_boneheat <rigged.nxa> <skinned.nxa>. No learned model, no training set, no third party in the build or run path. Everything that decides lives in nx_curveskel_lib.nx (which composes nx_boneheat_lib's voxeliser and geodesic solver); this is the door. nx_curveskel <in.nxa> <out.nxa> exit 0 written, 2 usage, 3 refused by name (no VERT/TRIS, no interior volume, unreadable, unwritable). license_tier: ORIGINAL