{"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-uhg5z6r3","versions":[{"created_at":"2026-06-04T05:53:38Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.1→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"73c70a6bcfa9517babf5fa3f0f4b6a8ebe0610c852cefc64388b2468d4860f2f","version":10},{"created_at":"2026-06-04T04:52:35Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 75.3→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"018a3885db0ac57cdef08c2bf91814843c1e4b3bea087ca0a5b8089ccd7a95cc","version":9},{"created_at":"2026-06-04T04:52:35Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3d0afdd4fcca4eb2652a90acef312ba63301bbd109f95aa3ea3c6141b11f5f3c","version":8}]}