Update app.py

app.py

@@ -10,7 +10,7 @@ import shutil
 import zipfile
 from dotenv import load_dotenv
 from huggingface_hub import hf_hub_download
-# from flask_session import Session
+from flask_session import Session
 
 # --- Core Application Imports ---
 # Make sure you have an empty __init__.py file in your 'src' folder