diff --git a/.gitignore b/.gitignore
index 980c55a..e7bd585 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 # Godot generated files
 .godot/
 .import/
+*.uid
 
 # Godot-specific ignores
 export.cfg
diff --git a/scripts/autoload/AudioManager.gd b/scripts/autoload/AudioManager.gd
index c8e6dcb..a8f9d39 100644
--- a/scripts/autoload/AudioManager.gd
+++ b/scripts/autoload/AudioManager.gd
@@ -1,5 +1,5 @@
 ## AudioManager — music playback with cross-fade, SFX playback, volume control.
-class_name AudioManager extends Node
+extends Node
 
 const DEFAULT_MUSIC_VOLUME: float = 0.6
 const CROSSFADE_DURATION: float = 1.0
diff --git a/scripts/systems/room_navigator.gd b/scripts/systems/room_navigator.gd
index f2f8001..b416b73 100644
--- a/scripts/systems/room_navigator.gd
+++ b/scripts/systems/room_navigator.gd
@@ -1,5 +1,5 @@
 ## RoomNavigator — autoload that moves the Camera2D smoothly between hospital floors.
-class_name RoomNavigator extends Node
+extends Node
 
 signal room_changed(floor_index: int)