Update app.py

app.py

@@ -389,9 +389,9 @@ def predict_bbb(smiles, pka, zeta):
     log_entry("LNP Brain",
               f"pka={pka},zeta={zeta}",
               f"ApoE={apoe_pct:.1f}%,BBB={bbb_prob:.2f}")
-    return (f"**Predicted ApoE:** {apoe_pct:.1f}% — {tier}\n\n"
-            f"**BBB Probability:** {bbb_prob:.2f}"),\
-           Image.open(buf)
+    result_text = (f"**Predicted ApoE:** {apoe_pct:.1f}% — {tier}\n\n"
+                   f"**BBB Probability:** {bbb_prob:.2f}")
+    return result_text, Image.open(buf)
 
 def extract_corona(text):
     out = {