{"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-sxz596bo","versions":[{"created_at":"2026-06-10T22:52:11Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote22514261 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3701260a5fff35ff9d7535cf7249ad698a0f0df27241f78ea2d35066f7c29dc8","version":25},{"created_at":"2026-06-10T13:16:12Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"4907649b8e71ca54c88c8a0671cc1c13cf6bd00a104bc417833cccafd52187e1","version":10},{"created_at":"2026-06-10T09:37:56Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7de51d6ea45a441dbfac10794c1e5e2d241a5d686aaf21130e200eb6e21c72bb","version":2}]}