Write the face/head concrete edits and close the review

TODO.md

@@ -100,8 +100,12 @@ licence-free zone only.
 *Skill route: `character-artist`, `retopology`, `rigging`, `uv-workflow`, `texture-workflow`,
 `materials`, `hair-groom`, `asset-optimization`, `lookdev`, `qa-review`.*
 
-- [ ] Face/head: review eye/mouth loops, cheek/brow/chin transitions and faceting at the 2 m
-      portrait distance against `character-artist` and `retopology`; write the concrete edits.
+- [x] Face/head review: the skinned GLB head is a uniform sphere with floating eye spheres, brow
+      cubes and one mouth cube — no cheek/brow/chin sculpting or eye loops, which is the flat
+      faceted read at portrait distance. Concrete edits written in `docs/3d-model-review.md` §1
+      (single-variant `npc_casual` prototype: socketed sclera + upper lid, sculpted cheek/brow/chin
+      vertices, recessed mouth + lip line, re-UV + re-AO). Fix is gated on the owner scorecard
+      review.
 - [ ] Hands/grip: re-check palm, finger segments, thumb and gear contact; decide between a
       finger-curl rig or the current open hand plus `HAND_ITEM_FORWARD`, and record the limit.
 - [ ] Weights/pose: capture idle, walk, sit and wave; inspect shoulder, hip and neck collapse;

docs/3d-model-review.md

@@ -209,6 +209,13 @@ owner review decides.
    asks for concentric eye loops and a 3-loop mouth. This is the largest readability gap and also
    the most expensive (head rebuild + re-UV + re-AO per variant). Needs a targeted single-variant
    prototype before committing to eight.
+
+   Concrete edits (single-variant prototype on `npc_casual`, in `tools/npc_pipeline.py`): recess
+   the sclera into a socket instead of floating a 0.027 sphere on the head surface, add a thin
+   upper-lid plane above each eye, sculpt the cheek/brow/chin from the head sphere's front
+   vertices (the skinned GLB head is a uniform sphere today — no cheek planes, brow ridge or jaw),
+   and replace the single mouth cube with a shallow recessed mouth plus a lip line. Re-UV and
+   re-bake AO for the head, then capture the portrait before touching the other seven.
 2. **No pose/weight evidence (unknown).** Idle, walk, sit, block and turn deformation has never been
    captured as a review set, so shoulder/hip/neck collapse is unmeasured. Cheap to add and it
    gates any claim that the rig is acceptable.