{"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-t18oit0q","versions":[{"created_at":"2026-06-04T05:51:24Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.5→98.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.5 (美 99 環 99 楽 100))","saved_by":"editor","sha256":"ce83c58f2dcc37ecdfd1365f407abf5790492227a1fbe928eb1faa3c3cb7d40d","version":10},{"created_at":"2026-06-04T04:54:35Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 65.9→98.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.5 (美 99 環 99 楽 100))","saved_by":"editor","sha256":"12437f5cdaa6eca4741bcda4b26992a14c5786f84d85bc9e3938ec156be7e424","version":9},{"created_at":"2026-06-04T04:54:35Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"53dc229d1fec3624ecb01b965191fabac352c195f330628e732b17c2cef29359","version":8}]}