{"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-sm9abvy6","versions":[{"created_at":"2026-06-04T05:54:47Z","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":"0f4f361b71f5a9e7b56210a6741d5aa5d7ed8ec6c909f4218315c0657ac1e642","version":10},{"created_at":"2026-06-04T04:55:35Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 60.7→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":"5c5b18e15f84dceda8bfa384f84876a77f31bc9161ead3016d0b1e4e8344bc83","version":9},{"created_at":"2026-06-04T04:55:35Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"f5dc6398c8a702ac81cbc3111654669e18bb7b605a2a014014a2942098e6b1c8","version":8}]}