Update app.py

app.py

@@ -11,7 +11,7 @@ import polars as pl
 import py3Dmol
 from rdkit import Chem
 from rdkit.Chem import AllChem, Draw
-from biopython_engine import ProteinDesigner
+from biopython  import ProteinDesigner
 from quantum_ai import QuantumGNN, MolecularDynamicsSimulator
 from synthetic_bio import CRISPRDesignTool, DNAAssembler
 from digital_twin import PatientDigitalTwin