fix: remove nested expander

app.py

@@ -182,9 +182,8 @@ if query:
         st.write(f"Found {len(df)} relevant papers!")
         
         # Display paper sources
-        with st.expander("View source papers"):
-            for _, paper in df.iterrows():
-                st.markdown(f"- [{paper['title']}]({paper['url']}) ({paper['published']})")
+        for _, paper in df.iterrows():
+            st.markdown(f"- [{paper['title']}]({paper['url']}) ({paper['published']})")
         
         # Get relevant context
         context = "\n".join([