{"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-aqdvgk3z","versions":[{"created_at":"2026-06-04T05:53:41Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.1→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"2c0ce9225b15583ce6fe9a09a840868403e293e633509b7f410ec05aea7b009e","version":10},{"created_at":"2026-06-04T04:57:30Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 46.8→94.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"ec319eb1f47dd33d042e7155d0ef6caf72ff8188956107c0742eef9a8a10a9ad","version":9},{"created_at":"2026-06-04T04:57:30Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"85f431297da53d570a7fc31765942b884a8155283b6943e31cff372f23e3bac7","version":8}]}