{"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-pucl0n0l","versions":[{"created_at":"2026-06-10T22:57:42Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy44363808→quote20904388 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1f47f9a33904feaf18c2402ab71e19fad9a91464342289b8a7a3aedc8aaaa6e1","version":9},{"created_at":"2026-06-10T19:34:25Z","element_count":84,"note":"5軸GA polish 60->94 by M5 (autonomous)","saved_by":"mcp","sha256":"8ffc1a3207c275cd53676688edaaed84a0735606476fc99a48376d3a264b970e","version":2}]}