Update app.py

app.py

@@ -98,6 +98,19 @@ collections = {
 # Sidebar for selecting collection
 st.sidebar.markdown("## Settings")
 
+# Help / About Section
+with st.sidebar.expander("ℹ️ About This Tool"):
+    st.markdown(
+        "This app analyzes metadata from Library of Congress digital collections. "
+        "It highlights completeness issues and suggests metadata enhancements using NLP."
+    )
+
+# Display Summary Statistics if available
+if 'metadata_df' in locals() and not metadata_df.empty:
+    st.sidebar.markdown("### 📊 Quick Stats")
+    st.sidebar.write(f"Total Records: {len(metadata_df)}")
+    st.sidebar.write(f"Incomplete Records: {len(metadata_df[metadata_df.isnull().any(axis=1)])}")
+
 # Add a key to the selectbox to ensure it refreshes properly
 selected = st.sidebar.selectbox("Select a collection", list(collections.keys()), key="collection_selector")
 search_query = collections[selected]