fix(debug): multi-line string literal in test_level_builder.gd

debug/test_level_builder.gd

@@ -1,7 +1,10 @@
 extends Node3D
 class_name TestLevelBuilder
 ## Builds the test level ONLY from code — no .tscn SubResource references.
-## Attach to a Node3D and call build() from _ready().
+## Automatically builds when attached to the TestLevel root node.
+
+func _ready() -> void:
+	build()
 
 func build() -> void:
 	_build_floor()
@@ -84,8 +87,5 @@ func _build_ui() -> void:
 	help.offset_top = 52
 	help.offset_right = 720
 	help.offset_bottom = 108
-	help.text = (
-		"WASD Move | Sprint=Shift | Slide=Ctrl+S | "
-		"Double-Jump=Space twice | Dash=LShift | Wall-Jump=Jump at wall"
-	)
+	help.text = "WASD Move | Sprint=Shift | Slide=Ctrl+S | Double-Jump=Space twice | Dash=LShift | Wall-Jump=Jump at wall"
 	canvas.add_child(help)