{"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-2ivactrr","versions":[{"created_at":"2026-06-04T05:53:21Z","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":"43e760f3cabf230f221312d13fc7670b5b3c07a5bbd13c6c0290ce561eeb8cc8","version":10},{"created_at":"2026-06-04T04:59:24Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 36.6→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":"0a0a9e74f86ef15537f94383a0b256c9705f6c9d4442637f233086cb21367564","version":9},{"created_at":"2026-06-04T04:59:23Z","element_count":17,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"4708fa1ed084daedb621fecf87001def34aa3807df66d6318aa0e1c1dc2cb6e7","version":8}]}