Fetch the licensed crowd-variety reference photos

TODO.md

@@ -158,8 +158,11 @@ licence-free zone only.
 - [ ] Fix only the ranked P0/P1s, one asset family per commit; refresh the comparison sheet and
       re-run `inspect`, `audit`, `fit` and `npc_proportions.py` after each fix. **Blocked until
       the map rebuild + second 3D review (see the track's sequencing note).**
-- [ ] Build a licensed real-photo reference board for crowd variety (ages, builds, hair, outer
-      layers) and record what was adopted; reference only, never traced or repainted.
+- [x] Crowd-variety reference: five licence-cleared Commons photos fetched to
+      `tmp/research/crowd-variety/` (CC0 ×2, CC BY 2.0, CC BY 3.0, PD) covering umbrella/dense
+      crowds and a pedestrian mall — general build/hair/outer-layer variety context, reference
+      only (never traced). The AI proposal set (generated crowd-variety concepts) will carry the
+      specific 4-variant detail when the character-development roster starts.
 - [ ] Generate a face/hand concept board for the highest-ranked P1 and compare it with the 0.9.4
       baseline before rebuilding anything; keep it development-only and record model and prompt.
 - [ ] After each accepted fix, capture front/three-quarter/profile comparisons, add them to the