imported numpy

app/mapper.py

@@ -3,6 +3,7 @@ import os
 import json
 import duckdb
 import pandas as pd
+import numpy as np
 from datetime import datetime, timedelta
 from app.db import get_conn, ensure_raw_table, enforce_schema_contract, transactional_conn,ensure_schema_versions_table
 from app.utils.detect_industry import _ALIAS, detect_industry