{"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-8wobm8ua","versions":[{"created_at":"2026-06-10T23:05:41Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote20693313 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2b07faba75bd5fa7668e9f91346a27102efb0ced6fde94bdcb5f86e34fe9e9e5","version":9},{"created_at":"2026-06-10T22:17:58Z","element_count":83,"note":"5軸GA polish 52->98 by M5 (autonomous)","saved_by":"mcp","sha256":"306c92fcaa309732c0dea4ed07657256cc4f7694e7ebed5c2583b3eabb8f0f88","version":4}]}