{"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-g2-jn039flq","versions":[{"created_at":"2026-06-04T05:52:29Z","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":4},{"created_at":"2026-06-04T04:55:11Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 62.7→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":"52273e4955bef2d77e59fc4863b1af9e797749928cdf068d99936e866c51a610","version":3},{"created_at":"2026-06-04T04:55:11Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"55423d46c206f65b214509ac643ef016cfaa8022cd862b6b052ed5c225a051ba","version":2}]}