{"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-lxk6ikpg","versions":[{"created_at":"2026-06-04T05:53:21Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"43e760f3cabf230f221312d13fc7670b5b3c07a5bbd13c6c0290ce561eeb8cc8","version":10},{"created_at":"2026-06-04T04:59:15Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 37.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"bc37f843d2fa9629045dfb1a355fe1f68992f473ae2963591f9d5119d53cd15a","version":9},{"created_at":"2026-06-04T04:59:15Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"ff47de5982330dc7d16321d834a299bd67e1dbe203cdd3b0773dae64084e8093","version":8}]}