Recess NPC eyes and sculpt the jaw and cheeks

TODO.md

@@ -99,10 +99,13 @@ and equipment fit.
 
 ### Head, face and hair
 
-- [ ] Refine the head volume and jaw/cheek/chin proportions against the portrait concept; keep the
-      face front direction unambiguous for the focus cone and head-turn.
-- [ ] Improve brow/eye-socket depth, eyelid/iris readability, nose bridge/tip, lips and ear shape
-      without turning the low-poly face into a noisy mesh.
+- [x] Refine the head volume and jaw/cheek/chin proportions against the portrait concept; keep the
+      face front direction unambiguous for the focus cone and head-turn. (Chin plate and cheekbones
+      sculpted into the head mesh; no separate jaw/cheek spheres or AO intersection rings.)
+- [x] Improve brow/eye-socket depth and eyelid/iris readability without turning the low-poly face
+      into a noisy mesh. (Recessed sclera, thin upper lid; `sheet_npc_baseline_compare-face.jpg`.)
+- [ ] Refine the nose bridge/tip, lips and ear shape; keep the five tint slots and face direction
+      unchanged.
 - [ ] Audit hair caps, fringes, side locks, buns and beard silhouettes for gaps, intersections and
       obvious scalp seams; keep hair color in the tintable slot.
 - [ ] Verify hats/hoods/sunglasses/helmets still clear the refined brow, ears and hair; update gear