{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-1h427ger","versions":[{"created_at":"2026-06-10T22:57:11Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy78252998→quote21288702 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7b12e6428aa5ad02cf44767fc9149776a9ffb198bc640f0765fed503a6f67e9b","version":9},{"created_at":"2026-06-10T19:18:52Z","element_count":91,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"54a9e9adf2fefbe653a8b63b59475d2d2d743f5e78164e09116629e2017c83e3","version":2}]}