feat(client): compositor plumb for multi-region garments + per-character logos (T-1089)

_apply_clothing_shader routes coverage.json multi_region garments to
toon_garment (4 tints, cascading fallback) with the brand logo resolved from
the new descriptor field clothing_logos (item_id -> brand id -> logos/<id>.png
— a logo is a per-CHARACTER wardrobe choice, so it rides the descriptor, not
the garment). Legacy garments keep the single-tint path untouched. Server-side
descriptor mirror stays parked with T-1060/Q-114 (appearance is client-local).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

client/scripts/rendering/character_visual_descriptor.gd

@@ -104,6 +104,11 @@ var accessory_slots: Dictionary = {}
 ## Changed from single Color per Tyre architecture review (Task #6).
 var accessory_tints: Dictionary = {}
 
+## item_id → brand id, resolved to assets/characters/logos/<id>.png (T-1089).
+## A logo is a per-CHARACTER wardrobe choice (which brand THIS shirt wears),
+## so it rides the descriptor, not the garment's coverage.json.
+var clothing_logos: Dictionary = {}
+
 
 ## Get the file key for the current body type (e.g. "average_m").
 func body_type_key() -> String:
@@ -139,6 +144,7 @@ static func from_dict(data: Dictionary) -> CharacterVisualDescriptor:
 	desc.clothing_tints = _decode_tint_map(data.get("clothing_tints", {}))
 	desc.accessory_slots = data.get("accessory_slots", {})
 	desc.accessory_tints = _decode_tint_map(data.get("accessory_tints", {}))
+	desc.clothing_logos = data.get("clothing_logos", {})
 
 	return desc
 
@@ -160,6 +166,7 @@ func to_dict() -> Dictionary:
 		"clothing_tints": _encode_tint_map(clothing_tints),
 		"accessory_slots": accessory_slots,
 		"accessory_tints": _encode_tint_map(accessory_tints),
+		"clothing_logos": clothing_logos,
 	}