permanent storage fix

pas2.py

@@ -380,8 +380,8 @@ Your response should be a JSON with the following fields:
 class HallucinationDetectorApp:
     def __init__(self):
         self.pas2 = None
-        # Use persistent storage directory
-        self.data_dir = "/data"
+        # Use the default HF Spaces persistent storage location
+        self.data_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "data")
         self.db_path = os.path.join(self.data_dir, "feedback.db")
         logger.info("Initializing HallucinationDetectorApp")
         self._initialize_database()