Update app.py

app.py

@@ -1,8 +1,13 @@
 import streamlit as st
 
-@st.cache_resource
 uploaded_files = st.file_uploader("Upload PDF files", type=["pdf"], accept_multiple_files=True)
 
+@st.cache_resource
+def process_pdfs(files):
+    # your expensive PDF parsing/embedding logic
+    return [f.name for f in files]  # placeholder
+
 retriever = None
 if uploaded_files:
-    st.info("Processing uploaded PDFs...")
+    st.info("Processing uploaded PDFs...")
+    retriever = process_pdfs(uploaded_files)