{
  "left_join_rows": 4,
  "unmatched": {"order_id": "O4", "sku": "999", "line_total": 50},
  "report": [{"sku": "001", "name": "りんご", "qty": 5, "line_total": 500}, {"sku": "002", "name": "なし", "qty": 1, "line_total": 200}],
  "reconciliation": {"input_total": 750, "report_total": 700, "unmatched_total": 50, "equation": "750=700+50"}
}