{"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-obv42j4y","versions":[{"created_at":"2026-06-10T22:57:19Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy50039783→quote22960791 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0790e56da2d678fbb5a6bdcf00786b9e02cdd16e9519383eae63bb477c4fe9ca","version":9},{"created_at":"2026-06-10T19:18:37Z","element_count":89,"note":"5軸GA polish 60->95 by M5 (autonomous)","saved_by":"mcp","sha256":"f232b739da6c707e5f4ddcf5ad709cc9b57082701da1337295dafd4405c9f44d","version":2}]}