modify sub title

chat_column.py

@@ -7,7 +7,7 @@ import streamlit as st
 def render_chat_column(st, llm_client, model_option, max_tokens, BASE_PROMPT):
     """Renders the chat history, input, and LLM prompt generation column."""
 
-    st.header("💬 Chat & Prompt Generation")
+    st.header("💬 Chat with the AI to generate JSON for Veo3")
 
     # --- Display Chat History ---
     # (This part remains the same)