{"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-rel23oqr","versions":[{"created_at":"2026-06-10T22:57:02Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→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":"f1dcb238f4a09098bcd29774e8c000202f16eb559bbf1ba53d0f78b712091ed8","version":9},{"created_at":"2026-06-10T19:02:37Z","element_count":84,"note":"5軸GA polish 52->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5dc7ead9effb049a8b6b9e9275aeaa62df423bfedfbe800c9f17ee97cff291c6","version":2}]}