added ensure schema version

app/mapper.py

@@ -4,7 +4,7 @@ import json
 import duckdb
 import pandas as pd
 from datetime import datetime, timedelta
-from app.db import get_conn, ensure_raw_table, enforce_schema_contract, transactional_conn
+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
 # app/mapper.py (add line 1)
 from app.hybrid_entity_detector import hybrid_detect_entity_type