Update app.py

app.py

@@ -733,7 +733,8 @@ def strip_degenerate_html_tables(md: str) -> str:
     return re.sub(r"\n{3,}", "\n\n", out)
 
 
-_LONG_NUM_TOKEN = re.compile(r"\b\d{7,}\b")
+# Match long digit runs even when OCR glues trailing letters (e.g. 9257403599CCD).
+_LONG_NUM_TOKEN = re.compile(r"(?<!\d)\d{7,}(?!\d)")
 
 
 def mask_non_monetary_long_numbers(md: str) -> str: