delta string fix sherika

app.py

@@ -22,9 +22,13 @@ DISABLE_DB = os.getenv("DISABLE_DB", "1") == "1"
 
 try:
     ok = api.health().get("ok")
-    st.sidebar.success("Backend: UP") if ok else st.sidebar.warning("Backend: ?")
+    if ok:
+        st.sidebar.success("Backend: UP")
+    else:
+        st.sidebar.warning("Backend: ?")
 except Exception as e:
     st.sidebar.error(f"Backend DOWN: {e}")
+
     
 # --- SESSION STATE INITIALIZATION ---
 for key, default in [("user", None), ("current_page", "Welcome"),