refactor structure

src/autoloads/GameManager.gd

@@ -0,0 +1,30 @@
+extends Node
+
+const GAME_SCENE_PATH := "res://scenes/game/game.tscn"
+const MAIN_SCENE_PATH := "res://scenes/main/main.tscn"
+const MATCH3_SCENE_PATH := "res://scenes/match3/match3.tscn"
+
+func start_new_game() -> void:
+	var packed_scene := load(GAME_SCENE_PATH)
+	if not packed_scene or not packed_scene is PackedScene:
+		push_error("Failed to load Game scene at: %s" % GAME_SCENE_PATH)
+		return
+	get_tree().change_scene_to_packed(packed_scene)
+
+func save_game() -> void:
+	print("Game saved (mock)")
+
+func exit_to_main_menu() -> void:
+	var packed_scene := load(MAIN_SCENE_PATH)
+	if not packed_scene or not packed_scene is PackedScene:
+		push_error("Failed to load Main scene at: %s" % MAIN_SCENE_PATH)
+		return
+	get_tree().change_scene_to_packed(packed_scene)
+
+func start_match3_game() -> void:
+	var packed_scene := load(MATCH3_SCENE_PATH)
+	if not packed_scene or not packed_scene is PackedScene:
+		push_error("Failed to load Match3 scene at: %s" % MATCH3_SCENE_PATH)
+		return
+	get_tree().change_scene_to_packed(packed_scene)
+