Bear, level selector (to be removed), new matador spawn, new bear level, saving config updates source files

levels/game_shell.gd

@@ -0,0 +1,26 @@
+extends Node3D
+## The reusable game shell: player, camera, HUD and the PS1 filter — everything that
+## outlives a single level. On load it instances the active level's module (geometry,
+## spawners, lighting, colliders) into LevelRoot. Switching levels frees the whole
+## previous module first, so no old mesh or collider can survive into the next fight.
+
+@onready var _level_root: Node3D = $LevelRoot
+
+
+func _ready() -> void:
+	Run.ensure_run()
+	load_active_level()
+
+
+## Tear down the current level module and build the run's active one. Freeing the whole
+## subtree (not hiding it) is the point: a level's colliders and spawners cease to exist
+## before the next level's are created.
+func load_active_level() -> void:
+	for child: Node in _level_root.get_children():
+		_level_root.remove_child(child)
+		child.queue_free()
+	var level := Run.active_level()
+	if level == null or level.level_scene == null:
+		push_warning("game_shell: active level has no level_scene")
+		return
+	_level_root.add_child(level.level_scene.instantiate())