Update app.py

app.py

@@ -30,6 +30,12 @@ collection_name = os.getenv("MONGO_COLLECTION", "files_collection")
 index_name = os.getenv("MONGO_VECTOR_INDEX", "vector_index")
 
 HF_TOKEN = os.getenv("HF_TOKEN")
+try:
+    api = HfApi(token=HF_TOKEN)
+    user_info = api.whoami()
+    st.success(f"✅ Hugging Face token is valid. Logged in as: {user_info['name']}")
+except Exception as e:
+    st.error(f"❌ Hugging Face token is invalid or has insufficient permissions: {e}")
 
 MONGO_URI = f"mongodb+srv://{user}:{password}@{cluster}/{db_name}?retryWrites=true&w=majority"