{"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-fnak25t3","versions":[{"created_at":"2026-06-04T05:51:48Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.5→99.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.0 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"bc68dabfdfd95b19052a6a61845cbf6495402cff1e33bcdadea2224aea6b76be","version":10},{"created_at":"2026-06-04T04:58:04Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 45.4→97.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.5 (美 95 環 100 楽 100))","saved_by":"editor","sha256":"6ed190f5dc5db58e83cd8ecfbe0a747088b077f2623865c6e23bddf626b5d42c","version":9},{"created_at":"2026-06-04T04:58:04Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"38fae5d6792ecb006ac5242b65eb72a10428a9a1362eb1184c73812a0722e897","version":8}]}