Add reviewed MakeHuman head prototype (vision gate rejected)

MEMORY.md

@@ -10,6 +10,15 @@ canonical implemented-features list in `docs/development-status.md`.
   the licence gate. Downloads live in `tmp/research/` (gitignored): DDG image search, street-view
   frames, neighbouring buildings — never committed, never shipped. Promotion into
   `docs/screens/refs/` always passes the sidecar licence + privacy gate and `CREDITS.md`.
+- **MakeHuman head prototype (2026-11-04):** `assets/models/blender_src/makehuman_head.glb`
+  is a local 12,641-tri/7,690-split-vert head derived from the CC0 MakeHuman base,
+  with a review sheet and `docs/makehuman-head-review.md`. The latest build uses a
+  skin eyelid mask (almond aperture cut from a sphere), recessed globes, flat iris/pupil
+  discs and surface-anchored brows. The automated vision gate still rejected it:
+  the eye depth reads inconsistently across front/three-quarter/profile and the lid
+  does not visibly overlap the globe. It is not rigged, textured, integrated or
+  shipped; keep the source/rejected parts in `tmp/` until real eyelid masses pass
+  the gate.
 - **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