Reorganize into role-based folders and consolidate art

Move every script and scene into role-based directories (actors/, systems/, ui/,
levels/, props/) and all raw art under art/ (grouped by role, snake_case,
Extract-Textures GLBs), dropping Blender version-suffix noise. Filenames are
snake_case (PascalCase reserved for class_name) to avoid case-insensitive
filesystem aliasing on the web/macOS targets. Routes the bull's hits through the
typed DamageEvent pipeline and wires the bull's abilities to the Fx library.
Updates CLAUDE.md's folder-layout overview to match.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CCyaJPTHCH9EDthpf4A5Sj

levels/matador_spawn.gd

@@ -3,7 +3,7 @@ extends Node3D
 signal matador_killed
 signal all_defeated
 
-const MATADOR := preload("res://Matador.tscn")
+const MATADOR := preload("res://actors/matador/matador.tscn")
 
 var _alive: int = 0
 var _wave: int = 0
@@ -34,25 +34,25 @@ func _spawn() -> void:
 # Matadors are assigned to a random subset of spawn points each wave and enter staggered.
 func _start_next_wave() -> void:
 	_wave += 1
-	
+
 	# 8 waves total.
 	if _wave > DP.f("mat_wave_size"):
 		return
-	
+
 	# Wave 1 = 1 matador, Wave 2 = 2, ... Wave 8 = 8.
 	var count := _wave
-	
+
 	# Shuffle the spawn points so the spawn locations are random.
 	var points: Array[Node3D] = _spawn_points.duplicate()
 	points.shuffle()
-	
+
 	for i in range(count):
 		# Reuse spawn points when we have more matadors than points.
 		var sp: Node3D = points[i % points.size()]
-		
+
 		var m := _spawn_at(sp.global_position)
 		m.call_deferred(&"enter_spawn_roll", Vector3.ZERO)
-		
+
 		if i < count - 1:
 			await get_tree().create_timer(
 				DP.f("mat_spawn_stagger")