{"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-cplzbdqn","versions":[{"created_at":"2026-06-10T22:52:47Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20833288 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"fc4924527cc8a1655d2948026edb9b60e84f102c85619dadb3ec1bdcb68ba68a","version":11},{"created_at":"2026-06-10T16:09:02Z","element_count":70,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a6344d8ad59e988f45cef19029ecf949d3202f240da7d0593b14d80cccfec910","version":3}]}