{"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-4mwtw0m7","versions":[{"created_at":"2026-06-04T05:52:38Z","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":10},{"created_at":"2026-06-04T04:56:15Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 56.6→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":"3a63d513f282fd9c148b14a2877428b716afe15d5ea24f06793a6ee68a407b57","version":9},{"created_at":"2026-06-04T04:56:15Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3dec84cc1b7bf04e376ba7fb53cfe4ffe10c46728a06c6f68ff22fab3835f45d","version":8}]}