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
+  accepted head and the 14-bone contract armature. Current output: **15,453 tris / 13,630 glTF
-  verts / 13,560 seam-split verts / 1.810 m / 14 bones / 10 materials**; `inspect` clean and feet
+  verts / 13,638 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
+  grounded. The neck is a radial cut of the decimated column bridged by a four-ring, 20-segment
-  (lower cone painted cloth, reads as a V-neck); the ankles are hidden by a 0.14 m shoe shell and a
+  lathe (lower rings painted cloth, reads as a crew neck); the ankles are hidden by a 0.12 m shoe
-  0.10 m pant cuff. Earlier torus collar, cloth cylinder collar and skin neck-blend sphere attempts
+  shell, 0.13 × 0.32 m sole and a 0.08 m pant cuff. Earlier torus collar, cloth cylinder collar,
-  were removed: they read as a brace, a shelf or a donut. Remaining polish: block-shaped shoes,
+  skin neck-blend sphere and destructive `smooth_vert` pass failed: the shells read as a brace,
-  V-shaped shirt hem at the crotch, skin-tight shirt, angular thigh facets. The prototype uses flat
+  shelf or donut, and vertex smoothing tore the open collar boundary into a dark hole. Remaining
-  slot colours because the one-shot MPFB UV unwrap does not match the per-slot NPC atlases.
+  polish: bulbous shoe toe, V-shaped shirt hem at the crotch, skin-tight shirt, angular thigh
-  Renders: `tmp/npc-parts/mpfb_proto/renders60/`; body-only: `body_only.glb`.
+  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

TODO.md

@@ -203,21 +203,24 @@ owner reviews the silhouette and a production integration decision is recorded.
       apply the helper MASK, scale to 1.81 m, retarget the A-pose arms to the contract wrist
       (`x=±0.27`, `z=0.78`), cut the neck at 1.505, decimate, bisect the clothing boundaries, paint
       the five slots, add a short neck flare, project hands, rounded shoe shells, cuffs, the
-      accepted head and the 14-bone armature. Current output: **15,373 tris / 13,552 glTF verts /
+      accepted head and the 14-bone armature. Current output: **15,453 tris / 13,630 glTF verts /
-      13,560 seam-split verts / 1.810 m / 14 bones / 10 materials**; `inspect` clean, feet grounded.
+      13,638 seam-split verts / 1.810 m / 14 bones / 10 materials**; `inspect` clean, feet grounded.
 - [x] Replace the spiky decimated MPFB hands with the project palm/finger primitives, straighten the
       splayed MPFB feet so the shoes point forward, and use rounded shoe shells + cuffs instead of
       flat blocks. Use flat slot colours in the prototype because the one-shot MPFB UV unwrap does
       not match the per-slot NPC atlases.
 - [x] Fix the neck junction without touching the accepted face: cut the decimated neck column
       radially (all-vertex test inside r=0.085) so the shirt shoulder silhouette stays intact,
-      then bridge the opening with a wide 20-segment skin cone from r=0.10 to r=0.056. The lower
+      then bridge the opening with a smooth four-ring lathe neck (r 0.100 → 0.056, 20 segments).
-      cone is painted cloth so the opening reads as a V-neck rather than bare chest. No torus,
+      The lower rings are painted cloth so the opening reads as a crew neck rather than bare
-      disk shelf, neck brace or sawtooth collar.
+      chest. No torus, disk shelf, neck brace or sawtooth collar.
-- [x] Seat the ankles in the shoes: remove the lower-leg x-narrowing, raise the shoe shell to
+- [x] Reject destructive vertex smoothing at the neck: a `smooth_vert` pass moved the open body
-      0.14 m and add a 0.10 m pant cuff at z=0.13 so the open tapered ankle is hidden.
+      boundary away from the neck cone, opening a dark hole. The lathe gives smooth shading
-- [ ] Owner reviews the updated MPFB body renders (`tmp/npc-parts/mpfb_proto/renders60/`).
+      without moving the collar boundary.
-      Remaining known defects: block-shaped shoe silhouette, white shirt hem forms a V at the
+- [x] Shrink the shoes and seat the ankles: shoe shell 0.12 × 0.30 × 0.12 m, sole 0.13 × 0.32 m,
+      shoe centre x=0.17, with a 0.08 m pant cuff (r 0.055/0.061) bridging leg and shoe.
+- [ ] Owner reviews the updated MPFB body renders (`tmp/npc-parts/mpfb_proto/renders63/`).
+      Remaining known defects: shoe toe still reads as a bulb, white shirt hem forms a V at the
       crotch, shirt still reads skin-tight, and the 2k-tri body budget leaves some angular thigh
       facets. These are polish, not blockers for the body direction.
 - [ ] Fix the low-budget seams before any rollout: weld the torso/hip/arm components after the

docs/npc-model-sourcing.md

@@ -55,14 +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 **15,373 / 16,000 tris**, 1.810 m, 14 bones and 10
+accepted head on an MPFB 2.0.18 body at **15,453 / 16,000 tris**, 1.810 m, 14 bones and 10
-materials, with project hands, rounded shoe shells, pant cuffs, accessory cuffs and flat slot
+materials, with project hands, smaller shoe shells, pant cuffs, accessory cuffs and flat slot
 colours. It is a review candidate, not a shipped asset. The neck is a radial cut of the decimated
-column bridged by a wide 20-segment cone (lower cone painted cloth, reading as a V-neck); the ankles
+column bridged by a four-ring, 20-segment lathe (lower rings painted cloth, reading as a crew neck);
-are hidden by raised shoe shells and pant cuffs. Remaining polish: block-shaped shoes, a V-shaped
+the ankles are hidden by 0.12 m shoe shells and 0.08 m pant cuffs. Remaining polish: a bulbous shoe
-shirt hem at the crotch, a skin-tight shirt and angular thigh facets. A torus collar, cloth cylinder
+toe, a V-shaped shirt hem at the crotch, a skin-tight shirt and angular thigh facets. A torus
-collar and skin neck-blend sphere were tried and removed because they read as a brace, shelf or
+collar, cloth cylinder collar, skin neck-blend sphere and a destructive vertex-smoothing pass were
-donut. The production integration decision (bake a committed
+tried and removed because they read as a brace, shelf or donut, or tore a hole at the collar. 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.