{"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-j7an0tpl","versions":[{"created_at":"2026-06-10T22:50:19Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote19524824 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"378ad09825995af6a577672a9fa716219786808a90ac7951aad70a4a86fddf34","version":25},{"created_at":"2026-06-10T13:08:12Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.3㎡(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":"b3c5c0f90d34ae4124c2329ca0953a05131883d2191a362b1f592af152e22152","version":11},{"created_at":"2026-06-10T07:41:53Z","element_count":89,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2375e211d912d6f2eb192a5f47260cce3fbf4a5dc4892b7f6056bb70f3d8e4d8","version":2}]}