{"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-fqljsbeo","versions":[{"created_at":"2026-06-10T22:52:25Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote21450603 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b29d309edb677185ce0836ada4b1b45d649bdab404c868307578f989facea8d5","version":23},{"created_at":"2026-06-10T13:30:44Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(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":"dfa7c19501a31ecf2c7a9b7e4f27790451e0b65df9b744be1efb7f410d8d393c","version":9},{"created_at":"2026-06-10T11:59:58Z","element_count":83,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d041121b8b15e666e39def7f2a28a58976a4c96bafa63752d5a3230b1439d0ab","version":4}]}