Fix Streamlit execution - add error handling

app.py

@@ -675,6 +675,11 @@ ollama pull llama3.2:3b
             """)
 
 
-if __name__ == "__main__":
+# Streamlit runs the entire script on each interaction
+# We don't need the __name__ guard here
+try:
     main()
+except Exception as e:
+    st.error(f"An error occurred: {e}")
+    st.exception(e)