Smooth the prototype neck and shrink the shoes

MEMORY.md

@@ -33,15 +33,17 @@ canonical implemented-features list in `docs/development-status.md`.
   points/weights, removes the rig, applies the helper MASK, scales to 1.81 m, retargets the A-pose
   arms to the contract wrist, cuts the neck at 1.505, decimates, bisects the clothing boundaries,
   paints the five slots, adds a short neck flare, project hands, rounded shoes and cuffs, the
-  accepted head and the 14-bone contract armature. Current output: **15,373 tris / 13,552 glTF
-  verts / 13,560 seam-split verts / 1.810 m / 14 bones / 10 materials**; `inspect` clean and feet
-  grounded. The neck is now a radial cut of the decimated column plus a wide 20-segment skin cone
-  (lower cone painted cloth, reads as a V-neck); the ankles are hidden by a 0.14 m shoe shell and a
-  0.10 m pant cuff. Earlier torus collar, cloth cylinder collar and skin neck-blend sphere attempts
-  were removed: they read as a brace, a shelf or a donut. Remaining polish: block-shaped shoes,
-  V-shaped shirt hem at the crotch, skin-tight shirt, angular thigh facets. The prototype uses flat
-  slot colours because the one-shot MPFB UV unwrap does not match the per-slot NPC atlases.
-  Renders: `tmp/npc-parts/mpfb_proto/renders60/`; body-only: `body_only.glb`.
+  accepted head and the 14-bone contract armature. Current output: **15,453 tris / 13,630 glTF
+  verts / 13,638 seam-split verts / 1.810 m / 14 bones / 10 materials**; `inspect` clean and feet
+  grounded. The neck is a radial cut of the decimated column bridged by a four-ring, 20-segment
+  lathe (lower rings painted cloth, reads as a crew neck); the ankles are hidden by a 0.12 m shoe
+  shell, 0.13 × 0.32 m sole and a 0.08 m pant cuff. Earlier torus collar, cloth cylinder collar,
+  skin neck-blend sphere and destructive `smooth_vert` pass failed: the shells read as a brace,
+  shelf or donut, and vertex smoothing tore the open collar boundary into a dark hole. Remaining
+  polish: bulbous shoe toe, V-shaped shirt hem at the crotch, skin-tight shirt, angular thigh
+  facets. The prototype uses flat slot colours because the one-shot MPFB UV unwrap does not match
+  the per-slot NPC atlases. Renders: `tmp/npc-parts/mpfb_proto/renders63/`; body-only:
+  `body_only.glb`.
 - **Project agent skills (2026-11-03):** two tracked skills live in `.agents/skills/`:
   `gig-line-blender-asset-contract` and `gig-line-release-qa`. They are guidance only,
   add no runtime dependency and are referenced from `tools/README.md`. The third-party