Update app.py

app.py

@@ -1384,6 +1384,9 @@ def main():
     init_session()
     chat_container = st.container()
 
+    # ✅ 타자 효과 on/off 토글 (기본 ON)
+    st.sidebar.toggle("타자 효과", value=True, key="typewriter_on")
+
     if "chat_log" in st.session_state and st.session_state.chat_log:
         replay_log(chat_container)