{"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-xewysmsy","versions":[{"created_at":"2026-06-04T05:52:06Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 97.0→99.5 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 99.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"641d9720102e5c414dacca4519fc924514e6adaa7c71c23370c2a621acb0e3cd","version":10},{"created_at":"2026-06-04T04:56:22Z","element_count":101,"note":"GA batch-improve 2026-06-04: 総合 56.1→97.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.0 (美 92 環 100 楽 100))","saved_by":"editor","sha256":"e86889fc0b6a53ff3b64e5b37cf329e60d3fc36ca6d04e5515350f70177d817b","version":9},{"created_at":"2026-06-04T04:56:22Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"a4ebd13af4bd4d1ffcd0f787a1cae2bd71c407f341bef84748a29ac81bf07b28","version":8}]}