Update app.py

app.py

@@ -1,5 +1,8 @@
 import io, os, re, json
 from typing import List, Tuple, Dict
+import os, sys
+sys.path.append(os.path.abspath("pdrt"))  # <— add this
+import models as pdrt_models              # <— from your vendored repo
 
 import numpy as np
 import pandas as pd