Detail the NPC avatars and finish the realism follow-ups

Blender library
- Rebuild the face: sclera, iris and upper lid per eye, brow ridge, cheekbones,
  nose bridge and tip, ears with lobes, split upper/lower lips.
- Give each hand four fingers plus a thumb and end every sleeve in a cuff ring.
- Raise CHAR_MAX_VERTS 4000 -> 5000 (16 avatars still cost ~6.9 ms of a 50 ms
  frame), decimate the body to 26 %; characters are now 3,974-5,026 tris and
  3,744-4,807 verts. Rebuild all 8 variants and re-bake their AO maps.

Capture tooling
- Add a `portrait` stage to capture_realism.gd: freeze one NPC, park the crowd
  out of frame, stand the subject on open sidewalk, turn it into the camera and
  put the guard on the sunlit side. New --portrait-type=N picks the role.
- Add the npc_portrait_day concept and map the shot to it, so avatar detail is
  scored against a portrait instead of a wide street frame.

Flashlight
- Drop the fake additive beam (Materials.light_beam + the cone mesh): on GL
  Compatibility a first-person camera inside the cone renders it as a filled
  disc with a bright far ring. Keep the tight spot (14 deg, 20 m, energy 4.2)
  and its headless test; the visible shaft is now planned behind a Forward+
  preset.

Docs and task tracking
- Move the finished realism follow-ups (ground exposure, flashlight, NPC detail,
  judge re-check) to DONE.md and expand TODO.md with step-by-step plans for NPC
  gear fit, venue geometry plus the committed gallery, and the Forward+ preset.
- Record the decisions, gotchas and portrait recipe in MEMORY.md; update the
  Blender contract, the concept README and the capture section of README.md.
- Refresh the gallery captures affected by the avatar rebuild.

Checks: headless 228/228, Python 86/86, blender_assets audit exit 0,
scene_concepts audit all GOOD, screen_designs compare 11 good / 0 bad,
smoke_npc_budget OK, boot clean (only the known headless mesh warning).

docs/blender-assets.md

@@ -86,16 +86,20 @@ All eight use the `npc_base` contract, so each one can replace
 - material slots `skin`, `cloth`, `pants`, `accessory`, `hair` carry the same
   neutral `assets/textures/npc/<slot>_{albedo,normal}.png` maps, so
   `Materials.npc_slot()` tints them the same way it tints `npc_base`.
-- budget ≤ 6000 triangles and ≤ 4000 vertices (glTF vertex count, after seam
-  splits). The current range is 3,788–4,640 triangles and 3,200–3,960
-  vertices.
+- budget ≤ 6000 triangles and ≤ 5000 vertices (glTF vertex count, after seam
+  splits; `CHAR_MAX_VERTS` in `tools/blender_assets.py`, raised from 4000 for
+  the 2026-11-01 face/hand pass). The current range is 3,974–5,026 triangles
+  and 3,744–4,807 vertices.
 
 Construction: the torso and limbs are one continuous Skin-modifier mesh,
-subdivided twice, decimated to 36 % with X symmetry, and cut at the waist, cuffs,
-sleeves and neck so the material borders are clean edge loops. The head,
-face (nose, ears, eyes, brows, mouth), hair, hands, shoes and clothing layers are
-separate parts. Weights come from distance to the bone segments, limited by body
-region. Parts that should stay rigid (head, hands, shoes) get a single bone.
+subdivided twice, decimated to 26 % with X symmetry, and cut at the waist, cuffs,
+sleeves and neck so the material borders are clean edge loops. The head is a
+separate part carrying the face detail: brow ridge, sclera/iris/upper-lid per eye,
+cheekbones, a nose with a bridge and tip, ears with lobes, and upper and lower
+lips. Hands have four fingers plus a thumb; sleeves end in a cuff ring.
+Hair, shoes and clothing layers are separate parts. Weights come from distance to
+the bone segments, limited by body region. Parts that should stay rigid (head,
+hands, shoes) get a single bone.
 
 | Character | `layer_for()` / look | Suggested roles | Preview gear |
 | --- | --- | --- | --- |
@@ -163,7 +167,7 @@ Emissive materials are always on in the GLB. The integration should tie them to
 
 - `python3 tools/blender_assets.py audit`: container, `POSITION`/`NORMAL`/
   `TEXCOORD_0`, UVs in [0, 1], no zero-area triangles (Godot warns about them
-  during LOD generation), budgets (characters 6000/4000, gear 1500, props 4000
+  during LOD generation), budgets (characters 6000/5000, gear 1500, props 4000
   triangles), grounding, and an editable `.blend`. For characters it also
   checks skinning, bones, slots, the `npc_base` mesh node and the height.
 - `tools/test_blender_assets.py`: catalogue and contract consistency with
@@ -176,7 +180,8 @@ Emissive materials are always on in the GLB. The integration should tie them to
 
 ## Known limitations
 
-- The characters have no baked AO or ORM texture of their own. They reuse the
+- Characters carry a baked `<name>_ao.png` (red channel, wired by
+  `_apply_outfit_materials()`), but no ORM texture of their own. They reuse the
   tiling slot maps, so the runtime `SurfaceMaterials` recipes still supply
   roughness.
 - There is a single body topology per build (average, slim, broad) and no