Add final progression to tiny sword, fixes and tweeks required

tests/test_prestige.gd

@@ -5,9 +5,7 @@ var failed: int = 0
 var _game_root: Node = null
 
 func _ready():
-    await run()
-    # Let test_runner handle exit
-    pass
+    pass  # run() is called by the test runner; avoid double-execution.
 
 func run():
     print("\n=== TEST: Prestige Mechanics ===\n")
@@ -15,6 +13,13 @@ func run():
     
     var scene = load("res://docs/gyms/tiny_sword/tiny_sword.tscn")
     _game_root = scene.instantiate()
+    
+    # Use a unique save path to avoid contaminating the real game's save.
+    var save_path: String = "user://test_prestige_%d.json" % randi()
+    DirAccess.remove_absolute(ProjectSettings.globalize_path(save_path))
+    var gs: LevelGameState = _game_root.get_node("LevelGameState")
+    gs.save_file_path = save_path
+    
     add_child(_game_root)
     
     await _wait()