{"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-bins74y4","versions":[{"created_at":"2026-06-10T23:00:54Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20863604 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e44b75e3bcc0c003551ae5fa155b493dbd88793e9c4403fe5ecbbedc4fb51e0f","version":9},{"created_at":"2026-06-10T21:44:04Z","element_count":72,"note":"5軸GA polish 53->97 by M5 (autonomous)","saved_by":"mcp","sha256":"bd445f7433ad107ada9759c26d8ad79dbbb9070a923ac3101cf8213b65e28e78","version":3}]}