Add Streamlit demo

app.py

@@ -20,7 +20,11 @@ if st.button("Submit"):
                 json={"text": text},
                 timeout=20
             )
-            result = response.json().get("result", "No result returned.")
+            try:
+                st.write("Raw response:", response.text)
+                result = response.json().get("result", "No result returned.")
+            except Exception as e:
+                st.error(f"Backend error: {e}\nRaw response: {response.text}")
             st.success(f"Parsed Output:\n\n{result}")
         except Exception as e:
             st.error(f"Backend error: {e}")