{"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-ww54wdxq","versions":[{"created_at":"2026-06-04T05:53:20Z","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":"05a23daa68d335f0be88a820fd6ee950b9fc80fe6da8e43f6e28f0f954737f0c","version":10},{"created_at":"2026-06-04T04:56:06Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 57.6→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":"9cebc21accf5ebd41da321e19bfb79fb2398da4e7047dc3bdd58c78b8ae6dfd0","version":9},{"created_at":"2026-06-04T04:56:06Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"82640c283b481fb2ec4b54dc7a7c1d15a4a9155149d873834d64054eb0925081","version":8}]}