{"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-990i80v5","versions":[{"created_at":"2026-06-04T05:53:40Z","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":"4433a7fb0d3a4385dbdd92489ab82228398bb2b8c9c1d6175c4473fc758719ce","version":10},{"created_at":"2026-06-04T04:58:20Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 44.6→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":"60f9e8ba74334a74547140e6e5bc6ac4aaa2658f7ceb06ccc356764202e1b414","version":9},{"created_at":"2026-06-04T04:58:20Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3675f6aa3c560cbeb2cc124c055146dec4e0c1ac46791a5d183fae0f2fa2f553","version":8}]}