{"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-0vlpj4l9","versions":[{"created_at":"2026-06-04T05:55:12Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.5→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"1990c2328133f153d67bcb5995eaba6da35406fb1c497a25297fbfd7397eb274","version":10},{"created_at":"2026-06-04T04:57:23Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 47.2→93.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"02473dca6491bdd3af0baa99dd14ca464ecac6eff9d01d12eeff34cf293a6fbc","version":9},{"created_at":"2026-06-04T04:57:23Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"be4e6773877ff885b7cc194a8d904167bbc8cb64a158b61c6c45d428d6dc4076","version":8}]}