{"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-jlddxqsn","versions":[{"created_at":"2026-06-10T22:57:25Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy54927201→quote22616301 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ac343eee28d2a0e90cce754e12b1d427adedb14b52942eeb81168da6ba478b89","version":9},{"created_at":"2026-06-10T19:18:51Z","element_count":90,"note":"5軸GA polish 60->94 by M5 (autonomous)","saved_by":"mcp","sha256":"cfd88f23a90ceb94d9fe3eb8646e89df591fb3d42e037d677e8d34f3a38b73f1","version":2}]}