{"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-ufcyv0dj","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21127790 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"92968508b363dabceab5489117a3177e60661c09e472876f733b757222ac581a","version":14},{"created_at":"2026-06-10T15:02:15Z","element_count":70,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a6344d8ad59e988f45cef19029ecf949d3202f240da7d0593b14d80cccfec910","version":5}]}