Establish the 0.9.4 NPC visual baseline

Add a neutral 48-frame character contact sheet, acceptance criteria and ranked baseline gaps, plus repeatable sheet/comparison tooling. No character GLB or runtime mesh changes.

docs/blender-assets.md

@@ -5,7 +5,10 @@ Architecture context: the asset contracts and fallback path are summarized in
 
 Status: built, audited, and integrated (2026-11-01). `NpcAvatar` selects the
 character variants and attaches the gear; `WorldBuilder` loads the prop library
-with colliders and phase-driven emissives.
+with colliders and phase-driven emissives. The 0.9.4 neutral baseline and its
+acceptance criteria are in [`npc-visual-review.md`](npc-visual-review.md);
+the committed 8 × 6 contact sheet is
+[`blender_previews/sheet_npc_baseline.jpg`](blender_previews/sheet_npc_baseline.jpg).
 
 Generator: [`tools/blender_assets.py`](../tools/blender_assets.py). Manifest (the
 source of truth for integration):
@@ -197,3 +200,7 @@ carry baked AO and the shared neutral material maps described above.
   the legs through the hem.
 - Preview colours (`PREVIEW_TINTS`) only stand in for `outfit_for()`. The GLBs
   stay neutral.
+- The 0.9.4 baseline found three P1 portrait issues: the tourist's photo prop
+  duplicates the backpack silhouette, the face is shallow/faceted at portrait
+  range, and the backpack straps read as rigid bars. The full ranked list and
+  accepted/deferred items are in [`npc-visual-review.md`](npc-visual-review.md).