{"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-g6w6zkoc","versions":[{"created_at":"2026-06-10T22:52:43Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20576137 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c0bc906746dc2665e37930168470ab0466f6fc02bd2315143cfdf967d551fc3c","version":12},{"created_at":"2026-06-10T15:37:04Z","element_count":74,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"275b5c9db26b62c07e36fd09015ad14a5455e0f025d729788f81f309e6eb0e80","version":4}]}