{"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-9uby9590","versions":[{"created_at":"2026-06-04T05:50:51Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.4→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"d5275043120fd1ede5319f8078e14832d759b99d3161c65aa76db329b6f87253","version":10},{"created_at":"2026-06-04T04:55:26Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 61.5→99.4 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.4 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"c42b9411a2f61f32bad944960009dce744d5f9cd5793f6ca2ddf1c4be0af10c3","version":9},{"created_at":"2026-06-04T04:55:26Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0994014da72971578f48534bf14099da4291270b18918e5ecaaed92dcef4033a","version":8}]}