Refit the tourist backpack and photo prop

Hide the tourist photo-pose bag outside camera poses, flatten the backpack straps onto the chest, rebuild the gear GLB/AO and publish the before/after NPC sheet.

docs/npc-visual-review.md

@@ -1,8 +1,10 @@
 # NPC visual baseline and acceptance criteria
 
-Status: baseline captured 2026-11-02. No character GLB, texture, gear or runtime
-mesh was changed in this step. The baseline is the reference for the 0.9.4 NPC
-visual optimization.
+Status: baseline captured 2026-11-02; the first P1 fixes were applied the same
+day (tourist photo-prop visibility and backpack strap geometry). The face pass
+and the remaining body/clothing work are still open. The baseline remains the
+reference for the 0.9.4 NPC visual optimization; the post-fix comparison is
+[`blender_previews/sheet_npc_baseline_compare-p1.jpg`](blender_previews/sheet_npc_baseline_compare-p1.jpg).
 
 ## What was captured
 
@@ -99,27 +101,32 @@ From `python3 tools/blender_assets.py fit` and the manifest:
 
 The widest character is `npc_coat` at 5,026 triangles and 4,807 vertices, so
 the current headroom is 974 triangles and 193 vertices per character. Any face
-or hand refinement must come out of that budget or replace existing detail.
+or hand refinement must come out of that budget or replace existing detail. The
+refit backpack measures 380 triangles / 406 vertices; the character and gear
+table above remains valid because the character meshes did not change.
 
 ## Baseline findings, ranked
 
 ### P1 — fix in the first model pass
 
-1. **The tourist carries two bag silhouettes.** `_add_props()` creates a
-   0.30 × 0.36 × 0.14 box at `(-0.34, 1.15, -0.18)` for the tourist photo pose
-   while `_add_accessory("backpack")` also attaches the library backpack. From
-   the three-quarter/back view the two read as separate bags. The photo prop
-   should be hidden outside the photo pose, merged into the backpack, or moved to
-   a clearly held camera.
+1. **The tourist carried two bag silhouettes. Fixed 2026-11-02.** `_add_props()`
+   created a 0.30 × 0.36 × 0.14 box at `(-0.34, 1.15, -0.18)` for the tourist
+   photo pose while `_add_accessory("backpack")` also attached the library
+   backpack. From the three-quarter/back view the two read as separate bags. The
+   photo prop is now hidden outside `photo`/`film` poses
+   (`photo_prop_visible_for_pose()`), so it only appears when the character is
+   actually taking a picture; the after frame confirms one bag at rest.
 2. **The face is the largest portrait gap.** The eyes, nose and lips are
    readable but sit on a shallow, faceted head: the eye whites protrude, the
    eyelid/cheek transition is missing, and the mouth is a dark slot. This is
    intentionally stylized, but the head volume and eye socket are the first
    things a player sees at conversation range.
-3. **Backpack straps read as rigid black bars.** The back gear's straps cross
-   the chest as thin, straight geometry with visible gaps from the shoulders,
-   not as fabric sitting on the torso. A player sees this on the most common
-   tourist silhouette in every crowd.
+3. **Backpack straps read as rigid black bars. Refit 2026-11-02.** The straps
+   were thin round tubes whose chest/waist points sat inside the torso, so only
+   fragments showed from the front. They are now flattened bands whose front path
+   sits outside the chest; the after sheet shows a continuous strap instead of
+   two detached rods. The backpack asset is now 380 triangles / 406 vertices
+   (still far below the 1,500-triangle gear budget).
 
 ### P2 — fix after the first P1 pass
 
@@ -167,17 +174,17 @@ python3 tools/npc_baseline.py compare \
 ```
 
 The comparison sheet places the before/after pair for each view side by side.
-If the change is accepted, copy the after sheet to a new committed name
-(`sheet_npc_baseline_after.jpg`) and link both from the preview index. The
-baseline is not replaced.
+The first run is committed as
+[`sheet_npc_baseline_compare-p1.jpg`](blender_previews/sheet_npc_baseline_compare-p1.jpg);
+keep the baseline sheet as the before artifact and add a new numbered/after
+sheet rather than replacing it.
 
 ## Next implementation order
 
-1. Remove the duplicate tourist bag silhouette and refit the backpack straps.
-2. Refine the head/eye socket/jaw volume without changing the face direction or
+1. Refine the head/eye socket/jaw volume without changing the face direction or
    the five tint slots.
-3. Add a conversation-distance hand/grip capture and fix hand geometry before
+2. Add a conversation-distance hand/grip capture and fix hand geometry before
    judging hand items.
-4. Audit hems and footwear in walk/sit/block poses.
-5. Re-run the 48-frame baseline, the 96-frame final-context review, the 24-NPC
-   budget and `blender_assets.py audit/fit`; publish the before/after sheet.
+3. Audit hems and footwear in walk/sit/block poses.
+4. Re-run the 48-frame baseline, the 96-frame final-context review, the 24-NPC
+   budget and `blender_assets.py audit/fit`; publish the next comparison sheet.