{"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-l06uvsom","versions":[{"created_at":"2026-06-10T23:11:47Z","element_count":85,"note":"legacy fix(retry): jpy68009927→quote20039150 (旧世代データ是正・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5c4e4d164176c5a620d10dff07347949cd35d0eae88edca1a711a958e021ebf1","version":27},{"created_at":"2026-06-10T22:52:01Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2a6a90ba190a95e59fd13dc91e260afc164056e08c2321538c3e22c3fea53a8a","version":26},{"created_at":"2026-06-10T13:10:11Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(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":"28d69fe6ea73689d2523a349843f3a1b32867303bf5a19b1c0807d376572651a","version":11},{"created_at":"2026-06-10T07:59:11Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ef8c4d982d2aec0b3ad45a2a89abcefc7bede32c1412b1824d7ad219bb7fa3e3","version":2}]}