{"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-v69c2c2q","versions":[{"created_at":"2026-06-04T05:51:01Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.3→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"c8a5363fd1df21313693a7cb4a909cf6317d79970d07d4cb19ba0ce5d76cdbdc","version":10},{"created_at":"2026-06-04T04:54:12Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 67.1→99.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"4b16cab0d53eea8a30d7c1fc1bb99efcc15a7111b71f20c7526397486ba29570","version":9},{"created_at":"2026-06-04T04:54:12Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"e21f1556cd22b8be445fbd3048f42d8df5a087cea1c8d34a90f026540ac8bd07","version":8}]}