{"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-2-4t3e17iq","versions":[{"created_at":"2026-06-04T05:49:47Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"78e72cfa7d0fcd43c30f7962f362e1f9e7f1a7db1205756355e46716c8d473e4","version":10},{"created_at":"2026-06-04T04:55:18Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 62.3→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"8de631d6779c8a815438811b14c717e0992e72d45a89a637f7807870a5296816","version":9},{"created_at":"2026-06-04T04:55:18Z","element_count":29,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"50753d5eeb79f52df80239effd177fe1a390f4875212d3756e7e9f71430fc6d4","version":8}]}