{"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-xoufjwwd","versions":[{"created_at":"2026-06-10T22:52:46Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21141931 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"6c34ca74ae5fffd8bf820d624577dbc1fcb5ba34cfd9f13bb1bc8820f5300366","version":11},{"created_at":"2026-06-10T16:08:53Z","element_count":89,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2375e211d912d6f2eb192a5f47260cce3fbf4a5dc4892b7f6056bb70f3d8e4d8","version":3}]}