nx_bodypose.nx

nx_bodypose.nx -- SKIN THE MANNEQUIN (swap+motion S-ladder, toward S6): pose the CONTINUOUS SDF body from the FK rig, so a MOVE renders on the PHOTOREAL-path raymarcher (nx_sdfrender shading: SSS/pores/spec/AO) instead of the flat mannequin discs. Mapping (a BINDING IS DATA, per nx_bodybind doctrine): * TORSO/HEAD parts = the sdf_body ellipsoids, each anchored to a bone (center = boneWorld + rest offset). * LIMBS = SPHERE-CHAINS along each posed bone segment (3 tapered spheres shoulder->elbow etc.): spheres are ROTATION-INVARIANT, so a bent limb is orientation-correct BY CONSTRUCTION (no ellipsoid-rotation math), and smin fuses the chain into one smooth limb. 36 parts total (PARTS_CAP 48). bodypose_fill(base, sk) rewrites base's O_PARTS/O_NPART/O_KBLEND from the CURRENT skeleton pose; call after sk_update, before rendering. license_tier: ORIGINAL