{"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-vvt75dg8","versions":[{"created_at":"2026-06-04T05:51:03Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.2→99.2 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.2 (美 100 環 96 楽 100))","saved_by":"editor","sha256":"87af041ef8722adf96a4f4015cdd91ce9e0403bdfda14a6442ad01789cf57a2d","version":10},{"created_at":"2026-06-04T04:52:52Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 73.9→99.2 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.2 (美 100 環 96 楽 100))","saved_by":"editor","sha256":"c068b5fd6a044d8702a2a36b2bd7a11330e583fd7c40afddf3395338cc2bcbd3","version":9},{"created_at":"2026-06-04T04:52:52Z","element_count":66,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"69a61b0a3d6a735b72ee16795971acfaefe54279f343883b59b0fe1abf5cdbb5","version":8}]}