Fix more PascalCase inconsistencies

src/autoloads/GameManager.gd

@@ -6,8 +6,9 @@
 
 extends Node
 
-const GAME_SCENE_PATH := "res://scenes/game/game.tscn"
-const MAIN_SCENE_PATH := "res://scenes/main/main.tscn"
+const GAME_SCENE_PATH := "res://scenes/game/Game.tscn"
+const MAIN_SCENE_PATH := "res://scenes/main/Main.tscn"
+const CREDITS_SCENE_PATH := "res://scenes/ui/Credits.tscn"
 
 var pending_gameplay_mode: String = "match3"
 var is_changing_scene: bool = false
@@ -97,6 +98,41 @@ func save_game() -> void:
 	DebugManager.log_info("Game saved with score: %d" % current_score, "GameManager")
 
 
+func show_credits() -> void:
+	"""Show credits scene with race condition protection"""
+	# Prevent concurrent scene changes
+	if is_changing_scene:
+		DebugManager.log_warn(
+			"Scene change already in progress, ignoring show credits request", "GameManager"
+		)
+		return
+
+	is_changing_scene = true
+	DebugManager.log_info("Attempting to show credits scene", "GameManager")
+
+	var packed_scene := load(CREDITS_SCENE_PATH)
+	if not packed_scene or not packed_scene is PackedScene:
+		DebugManager.log_error(
+			"Failed to load Credits scene at: %s" % CREDITS_SCENE_PATH, "GameManager"
+		)
+		is_changing_scene = false
+		return
+
+	var result = get_tree().change_scene_to_packed(packed_scene)
+	if result != OK:
+		DebugManager.log_error(
+			"Failed to change to credits scene (Error code: %d)" % result, "GameManager"
+		)
+		is_changing_scene = false
+		return
+
+	DebugManager.log_info("Successfully loaded credits scene", "GameManager")
+
+	# Wait for scene to be ready, then mark scene change as complete
+	await get_tree().process_frame
+	is_changing_scene = false
+
+
 func exit_to_main_menu() -> void:
 	"""Exit to main menu with race condition protection"""
 	# Prevent concurrent scene changes