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

src/game/world_builder.gd

@@ -498,20 +498,40 @@ func _build_comedy_store_building() -> void:
 	step_body.shape_owner_set_transform(step_owner,
 		Transform3D(Basis(), Vector3(door_x, 0.07, front + 0.92)))
 	root.add_child(step_body)
-	# Red curtains hang between the entrance and the signature wall. Three
-	# narrow folds and a tieback keep them from reading as flat red slabs.
-	for x in [-3.2, 1.9, 7.0, 11.2]:
-		for fold in [-0.27, 0.0, 0.27]:
-			var fold_color := red.lightened(0.10 if fold > 0.0 else 0.0)
-			_add_box(building, Vector3(0.24, 3.10, 0.18),
-				Vector3(x + fold, 2.70, front + 4.56 + absf(fold) * 0.08),
-				fold_color, true, null, Vector2.ONE, "cloth")
-		_add_box(building, Vector3(0.96, 0.16, 0.22),
-			Vector3(x, 2.13, front + 4.60), Color(0.24, 0.02, 0.03),
-			false, null, Vector2.ONE, "cloth")
-		_add_box(building, Vector3(1.06, 0.52, 0.20),
-			Vector3(x, 1.34, front + 4.54), Color(0.34, 0.025, 0.035),
-			false, null, Vector2.ONE, "cloth")
+	# Red tied-back curtains: seven bays between the entrance and the east end.
+	# Each drape is cinched at a tieback into an hourglass, leaving the dark
+	# recess visible on either side, and finishes in a scalloped hem. The taper
+	# plus tone variation makes them read as gathered fabric, not flat slabs.
+	for bay in range(7):
+		var x := -3.2 + float(bay) * 2.4
+		# Top drape tapering down to the tieback (widest under the valence).
+		for top in [[4.05, 1.00], [3.55, 0.80], [3.05, 0.60], [2.55, 0.42]]:
+			_add_box(building, Vector3(top[1], 0.52, 0.20),
+				Vector3(x, top[0], front + 4.56),
+				red.lightened(0.05), true, null, Vector2.ONE, "cloth")
+		# Tieback cord at the narrowest point.
+		_add_box(building, Vector3(0.60, 0.14, 0.24), Vector3(x, 2.15, front + 4.58),
+			Color(0.24, 0.02, 0.03), true, null, Vector2.ONE, "cloth")
+		# Bottom drape flaring down to the hem.
+		for bottom in [[1.85, 0.56], [1.48, 0.82]]:
+			_add_box(building, Vector3(bottom[1], 0.52, 0.20),
+				Vector3(x, bottom[0], front + 4.56),
+				red.lightened(0.11), true, null, Vector2.ONE, "cloth")
+		# Scalloped hem: overlapping shallow spheres along the bottom edge.
+		for hem_i in range(5):
+			var hem_x := -0.46 + 0.23 * float(hem_i)
+			var hem := MeshInstance3D.new()
+			var hem_mesh := SphereMesh.new()
+			hem_mesh.radius = 0.25
+			hem_mesh.height = 0.48
+			hem_mesh.radial_segments = 8
+			hem_mesh.rings = 4
+			hem.mesh = hem_mesh
+			hem.position = Vector3(x + hem_x, 1.24, front + 4.56)
+			hem.scale = Vector3(0.62, 0.36, 0.36)
+			hem.material_override = Materials.flat(red.lightened(0.12), "cloth")
+			hem.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_ON
+			building.add_child(hem)
 	# Small warm sconces along the black wall. Their bulbs are emissive and each
 	# gets a low-energy practical so the facade is not a black hole after dark.
 	for x in [-12.4, -6.2, 3.0, 9.4]: