{"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-34dab1f8","versions":[{"created_at":"2026-06-04T05:53:17Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"faecb7707fbfa274a16c696adae99bd5f799eab7c092786772194f52d942a608","version":10},{"created_at":"2026-06-04T04:52:40Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 75.1→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"34c331c3574beb69af92f2014844f71087606989cae719bd1f3b9b95e29b8699","version":9},{"created_at":"2026-06-04T04:52:40Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"e8f25f25aafdcc9d8e50472512b4b2a82c11b52ffed401e01d88240b3e320541","version":8}]}