Save feedback to the temp folder

The app folder is read-only for the non-root user Spaces run as, so writing
feedback.txt there would fail. Write it to the temp folder instead.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app.py

@@ -2,6 +2,7 @@ import streamlit as st
 import pandas as pd
 import pickle
 import os
+import tempfile
 from transformers import log_transform
 
 # Load the model and encoder
@@ -145,6 +146,7 @@ elif options == "Feedback":
     feedback = st.text_area("Enter your feedback here")
     if st.button("Submit"):
         # Logic to store feedback, can be a simple file write or a database insert
-        with open("feedback.txt", "a") as file:
+        # The app folder is read-only on Hugging Face (non-root user), so save to the temp folder
+        with open(os.path.join(tempfile.gettempdir(), "feedback.txt"), "a") as file:
             file.write(f"{feedback}\n")
         st.success("Thank you for your feedback!")