Recess NPC eyes and sculpt the jaw and cheeks

MEMORY.md

@@ -81,6 +81,11 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   1.37 m. A final triangulate + tiny-face delete in `build_character` removes zero-area triangles
   that the new neck branch exposed in jacket/hoodie. All eight GLBs and AO maps were rebuilt;
   `npc_proportions.py` still passes and `sheet_npc_baseline_compare-body.jpg` is the review image.
+- **NPC face-depth pass (0.9.4, 2026-11-02):** recessed the sclera to `ey=-0.134` and added a
+  thin upper lid; removed the separate jaw/cheek spheres and instead sculpt front head vertices
+  (`_shape_head_mesh`) around a chin plate and cheekbones. This avoids dark AO intersection rings.
+  Moved lips forward to stay on the reshaped surface. Latest review sheet:
+  `sheet_npc_baseline_compare-face.jpg`; max character is now 4,754 tris / 4,574 verts.
 - **UI flow smoke (2026-11-02):** `smoke_ui_flows.gd` boots the real scene and
   exercises inspection allow/deny, normal vs emergency radio, Help filtering,
   wand allow/deny and review return-to-menu. Keep this smoke in the 0.9.6