Tie back the Joke Shop curtain bays and add the describe_image vision tool

TODO.md

@@ -201,6 +201,10 @@ licence-free zone only.
       the `CanopySignatures` label is white, Godot 276/276, `12-joke-shop.png` + the three-up
       board recaptured. Note: fix 2 (blade sign) is already a circular disc on a roof pole in the
       code (`37f925c`); the ranking note was stale.
+      **Fix 5 landed:** the red curtain bays are now seven tied-back drapes (hourglass cinch, dark
+      recess between bays, scalloped hem) instead of four flat red slabs; vision-judged as
+      "tied-back/gathered fabric" via `tools/describe_image.py`. Joke Shop map is now 25,828 tris /
+      518 meshes (under the 150k/700 budget); Godot 277/277, `12-joke-shop.png` + board recaptured.
 - [ ] Lighting: `lighting`/`lookdev` pass on sconces, canopy, marquee and street lamps with
       day/late captures. (Attenuation is now gated: `test_venue_lights_use_physical_falloff`
       asserts every `OmniLight3D`/`SpotLight3D` in all three venues uses `attenuation = 1.0`,