fix parsing db and tests

tests/test_db.py

@@ -104,6 +104,18 @@ class TestPersistenceServiceIntegration(unittest.TestCase):
         self.assertEqual(result["action"], "skipped")
         self.assertEqual(result["images_upserted"], 0)
 
+    def test_persistence_ignores_non_db_fields(self) -> None:
+        record = self._record("1000", content_hash="schema-test")
+        record.raw_attributes = {"vin": "123"}
+        record.mapping_notes = ["note"]
+
+        result = self.persistence.upsert_car(record)
+
+        self.assertEqual(result["action"], "inserted")
+        with self.persistence.session_scope() as session:
+            car = session.execute(select(Car).where(Car.origin_id == "1000")).scalar_one()
+        self.assertEqual(car.origin_id, "1000")
+
 
 if __name__ == "__main__":
     unittest.main()