{"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-4l5tssa2","versions":[{"created_at":"2026-06-04T05:50:23Z","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":"24025d64f44b2efa5386f087f65bfec6db01d5dabe4be6668f225c02fb76689e","version":10},{"created_at":"2026-06-04T04:55:40Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 60.2→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":"e94bcc22fa548c6441015a2dffe38e723d8d8c7a0cff7c34e65f56310bdaae65","version":9},{"created_at":"2026-06-04T04:55:40Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6fb87cd18f0585d93728a55190bd35ad3ae46934ce518e125c13c22deb572eb9","version":8}]}