Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,5 +1,8 @@
 import streamlit as st
 import pandas as pd
+from PIL import Image
+import base64
+from io import BytesIO
 
 # ─── Page config ──────────────────────────────────────────────────────────────
 st.set_page_config(page_title="ExpertLongBench Leaderboard", layout="wide")