{"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-coy9cx4m","versions":[{"created_at":"2026-06-04T05:50:02Z","element_count":98,"note":"GA diverse re-design 2026-06-04: 総合 99.5→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":"054ca994a98f83a21c60cebee871270f07f0ecdc7f1d567012d8c29e7fc72c02","version":10},{"created_at":"2026-06-04T04:57:00Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 48.8→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":"653421a3032c3e1bee30f51709dd8ffb5449b05388dd7ea7e5816dd36378e8af","version":9},{"created_at":"2026-06-04T04:57:00Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"74b45a9c55c7d64a0fdcaae6c60d542d1eb4c4b14dbb6775fda8c5e39114df5e","version":8}]}