{"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-g5-4h9gr41g","versions":[{"created_at":"2026-06-04T05:52:02Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.0→97.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.4 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"a000ae4ad289ec6010db34c0e7863f973ae15c489d5a9e42c7270bddc94e0eb8","version":4},{"created_at":"2026-06-04T04:54:39Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 65.8→97.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 97.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"005907d71e40f1ff3062f502461a7efbc58a316bf76dd4017726068feca17005","version":3},{"created_at":"2026-06-04T04:54:39Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"c5462f5d45500a4e1cf6324bbe9ce8ee34a08c7e6eed42b80db8d34dbb54765c","version":2}]}