Move the shoulder bag clear of coat and dress skirts

Narrow the bag to 0.06 m and move it outboard to centre x=0.292. The body inner
face is now 0.262 m, clearing the coat skirt (0.225) and dress (0.260); the
strap lower points start on the same line. The fit report measures the bag body
separately from the torso strap and uses a signed inner-face clearance. Run
Blender build/bake and Godot import. Python tooling 87/87.

TODO.md

@@ -21,10 +21,10 @@ live in `tools/blender_assets.py` (`_build_gear()`), the contract in `docs/blend
       Rebuilt GLB/AO: measured width **0.202 m** (0.64x head), still inside the head band.
       Also fixed `capture_realism.gd` so `--portrait-type=N` is actually parsed (it was documented
       but ignored).
-- [ ] Fix `shoulder_bag` clipping through `npc_coat`/`npc_dress`: the bag body spans `|x|`
-      0.17–0.25 at the hip while the skirt flares to 0.225–0.26, so its inner half is inside the
-      cloth. Move it outboard (or up onto the belt line) until the inner face clears the flare,
-      and keep the strap tube outside the same radius.
+- [x] Fix `shoulder_bag` clipping through `npc_coat`/`npc_dress`: narrowed the bag to 0.06 m and
+      moved it outboard (centre x=0.292); the body's inner face is now 0.262 m, clearing the coat
+      (0.225) by 0.037 m and the dress (0.260) by 0.002 m. The strap's lower attach points sit on
+      the same outboard line. `fit` now measures the bag body separately from the torso strap.
 - [ ] Same pass for `cap`/`beanie`/`hood`/`firefighter_helmet`: they must not clip the new
       brow/ear geometry, and `hood` must still leave the face readable for hoodie avatars.
 - [ ] Rebuild the gear (`build`) and re-bake AO (`tools/bake_ao.py`), then