{"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-ytq4tuhu","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96334560→quote21362937 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"41ca83c25e5d61dfb3c830044685125a9e95e1ddbe5baeec6a9dcf48723b4b5d","version":21},{"created_at":"2026-06-10T13:32:53Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"98a194aeaf498b958603c17fa0719e363361d8ed11502fa338bd946d1765e24c","version":7},{"created_at":"2026-06-10T12:16:04Z","element_count":73,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"7f3360f029463a4664a42581a19e2835834662c760399af8cd3bed264227b798","version":3}]}