{"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-7a0hbi59","versions":[{"created_at":"2026-06-04T05:53:29Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.5→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"be73d9768fa3d5f787bb50b611264a1a1ba716a88d70fd41cedf229e5023ec37","version":10},{"created_at":"2026-06-04T04:56:13Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 57.0→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"53c3081e24705ad0bb1d95ed0df1df4262bac3d0310fb461496fd88da2b0dccf","version":9},{"created_at":"2026-06-04T04:56:13Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"9e9ef170b675a94d8f861a8a43820fb2ecca2ccc57839a3e5b1a135019b5e4f3","version":8}]}