Update UI Frontend Version 1.1.0

frontend/app.py

@@ -1,5 +1,5 @@
 # Path: frontend/app.py
-# Main application file for the frontend, setting up the app and routing.
+# Main application entry point, setting up the app and routing.
 import streamlit as st
 from components import auth, sidebar, chat
 

frontend/components/chat.py

@@ -6,6 +6,7 @@ from utils import api
 
 def render_chat_interface():
     st.title(":material/sql: NL2SQL Assistant")
+    st.divider()
     
     # Render existing messages
     for msg in st.session_state['messages']:

frontend/components/sidebar.py

@@ -5,12 +5,21 @@ from utils import api
 
 def render_sidebar():
     with st.sidebar:
+        st.header(":material/sql:")
+
         if st.button(":material/add: New Chat", use_container_width=True):
             st.session_state['current_session_id'] = None
             st.session_state['messages'] = []
             st.rerun()
         st.divider()
 
+        st.subheader("Model Selection")
+        model_options = st.selectbox(
+            "Choose a model:",
+            ["Model A", "Model B"],
+            label_visibility="collapsed"
+        )
+
         # Guest View
         if st.session_state['guest_mode']:
             st.info("You are in Guest Mode. Your conversation history will not be saved.")