{"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-ys4akfkh","versions":[{"created_at":"2026-06-04T05:51:31Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.3→98.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.3 (美 100 環 95 楽 100))","saved_by":"editor","sha256":"9dd6735b060d16ec14a9df7081f845992b5d207337786b208211373f84501010","version":10},{"created_at":"2026-06-04T04:53:20Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 70.5→98.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.3 (美 100 環 95 楽 100))","saved_by":"editor","sha256":"a64a400af512e06e176030fb01034cab548dfd20c02b4984d1b3ddd90f3b2505","version":9},{"created_at":"2026-06-04T04:53:20Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"482dc705f5afa8c56fa44349804dcda0d1a3880b22f32fa8194f87ffacf26232","version":8}]}