{"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-y4ub86ci","versions":[{"created_at":"2026-06-04T05:54:54Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.6→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":"b054168001b4876b81c350cde4d780dbcbe54c9168811fcc5e9c672c0eb961b9","version":10},{"created_at":"2026-06-04T04:56:36Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 52.4→93.6 (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 93.6 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"73336d981644111201d92eab7ccc873bdd6623ae96a34871ef09266cdd30eaa8","version":9},{"created_at":"2026-06-04T04:56:36Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"3dec84cc1b7bf04e376ba7fb53cfe4ffe10c46728a06c6f68ff22fab3835f45d","version":8}]}