Clear the firefighter helmet brim from the brow

The face pass added a brow ridge; lift the helmet mesh 2 cm so the brim sits
above the eyes. Cap and hood were rendered on their characters and leave the
brow/ears and face readable. Rebuild and re-bake the helmet; Python 87/87.

MEMORY.md

@@ -15,7 +15,10 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   (7 match / 4 review / 0 diff); `--model` remains available.
 - `capture_realism.gd` parses `--portrait-type=N`; it was documented but ignored before the gear
   pass. Portrait captures need the requested NPC type to have spawned, otherwise the stage can
-  finish with an empty frame; use the Blender `npc_coat` preview for a deterministic gear check.
+  finish with an empty frame; use the Blender character previews (`render --only npc_coat`) for
+  deterministic gear checks.
+- Headgear: the firefighter helmet was lifted 2 cm after the brow/face pass; cap and hood were
+  visually checked on `npc_vest`/`npc_hoodie`. The beanie is unused and shares the cap shell.
 - Gear fit is measured with `python3 tools/blender_assets.py fit` (stdlib, reads the GLBs):
   head width uses skin vertices weighted to Head in y 1.55–1.81; clothing radius is the cloth
   skirt in y 0.30–0.52 with a pants hip fallback. The command reports per-character gear boxes,