{"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-35hvclf1","versions":[{"created_at":"2026-06-04T05:53:39Z","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":"7d1aed46cc0eafeb2b807e3c9886c0fe760f3fb136f8525053810da56f73b15e","version":10},{"created_at":"2026-06-04T04:54:53Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 64.8→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":"c8c8fb8d0c11cbe44dd6e2e8cfa4c1c84fdda622475a060b4d1b126aa506b962","version":9},{"created_at":"2026-06-04T04:54:53Z","element_count":29,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"efae77431803407b4ec9d43eea9212b1b1a52d25009a74458a62c85206876076","version":8}]}