Update app.py

app.py

@@ -96,6 +96,12 @@ for message in st.session_state.messages:
     with st.chat_message(message["role"]):
         st.markdown(message["content"])
 
+# Display chat messages from history on app rerun
+for message in st.session_state.messages:
+    if message["role"] != "system":  # Skip system messages
+        with st.chat_message(message["role"]):
+            st.markdown(message["content"])
+
 # React to user input
 if prompt := st.chat_input("😉 Ask any question or feel free to use the examples provided in the left sidebar."):