Update app.py

app.py

@@ -1,8 +1,9 @@
 import streamlit as st
 from prompt.bmi import calculate_bmi, bmi_category
-from prompt.prompt_builder import build_prompt
+from prompt.build_prompt import build_prompt
 from prompt.generator import load_model, generate_plan
 
+
 # -------------------------
 # Page Config
 # -------------------------