Record current MPFB body prototype measurement and neck review

docs/npc-model-sourcing.md

@@ -55,12 +55,14 @@ The MakeHuman body should reuse the approved local head/hand parts rather than f
 a second face implementation.
 
 The current local MPFB full-body prototype (`tmp/npc-research/build_mpfb_npc.py`) assembles the
-accepted head on an MPFB 2.0.18 body at **15,917 / 16,000 tris**, 1.811 m, 14 bones and 10
-materials, with project hands, rounded shoe shells, cuffs and flat slot colours. It is a review
-candidate, not a shipped asset: the neckline reads as a short collar, the 2k-tri body budget
-leaves boxy outer thighs, and torso/hip/arm seam gaps appear when the budget is raised. The
-production integration decision (bake a committed source GLB or keep the procedural body) and
-the owner review are tracked in `TODO.md`; MPFB itself must not become a CI/build dependency.
+accepted head on an MPFB 2.0.18 body at **15,333 / 16,000 tris**, 1.810 m, 14 bones and 10
+materials, with project hands, rounded shoe shells, accessory cuffs and flat slot colours. It is a
+review candidate, not a shipped asset: the decimated neck stub is boxy under the accepted head, the
+shoes remain block-shaped, the ankles taper above the shoe shells, and the shirt hem forms a V at
+the crotch. A torus collar, cloth cylinder collar and skin neck-blend sphere were tried and removed
+because they read as a brace, shelf or donut. The production integration decision (bake a committed
+source GLB or keep the procedural body) and the owner review are tracked in `TODO.md`; MPFB itself
+must not become a CI/build dependency.
 
 ## Provenance rules