Update app.py

app.py

@@ -151,6 +151,7 @@ def main():
                             similarity = res.get('similarity', 0)
                             st.progress(similarity)
                             st.markdown(f"**Confidence**: {similarity:.1%}")
+                            st.markdown(f"**Authors**: {res.get('authors', '')}")
                             source = res.get('source', '')
                             if source and is_valid_url(source):
                                 st.markdown(f"[View Source]({source})")
@@ -170,7 +171,7 @@ def main():
             st.metric("Documents", f"{search_system.metadata_mgr.total_docs:,}")
         
         with col2:
-            vectors = search_system.index.ntotal if hasattr(search_system, 'index') else 0
+            vectors = search_system.total_vectors
             st.metric("Vectors", f"{vectors:,}")
 
         # Diagnostics section