Update app.py

app.py

@@ -2,6 +2,14 @@
 import gradio as gr
 import spaces
 from chatbot_logic import get_bot_response
+from knowledge_base import load_and_chunk_pdfs, create_vectorstore
+import os
+
+if not os.path.exists("chroma/index"):
+    print("Vectorstore missing or empty — running ingestion.")
+    chunks = load_and_chunk_pdfs("meal_plans")
+    create_vectorstore(chunks)
+
 
 # === User Preference State ===
 user_preferences = {