{"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-mo4g2ca9","versions":[{"created_at":"2026-06-04T05:51:29Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.3→98.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.3 (美 100 環 95 楽 100))","saved_by":"editor","sha256":"060f1f6e55349105d89ee4fcb2e075bf1ae3914552d5cf895132a7190892ef99","version":10},{"created_at":"2026-06-04T04:54:15Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 66.9→98.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.3 (美 100 環 95 楽 100))","saved_by":"editor","sha256":"2361867fbe5f0a555db9e03c344c285ed0bc6b75b9e9307ebde420d456f15bc8","version":9},{"created_at":"2026-06-04T04:54:15Z","element_count":32,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"16817f98199a58bd6dafa35230f432b0338fdd4acf4d90f402ef8aa8c3f34975","version":8}]}