{"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-87o5blw8","versions":[{"created_at":"2026-06-04T05:55:30Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.1→93.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"ad62cec9dcb03990ee4678be24bc618606660c9a6eb39fdabd0efb03dfe23327","version":10},{"created_at":"2026-06-04T04:53:55Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 68.2→93.1 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.1 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"ad15b83a2ef5639276808d4aa74738031b38702b2e0dad07ea23c70433e39702","version":9},{"created_at":"2026-06-04T04:53:55Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3c98cdeeae5e1b608261c9d31115abed549363a9d50399d9c2118b15b7becf35","version":8}]}