{"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-ya2gkxeh","versions":[{"created_at":"2026-06-04T16:59:38Z","element_count":63,"note":"polish: batch-improve-100 2026-06-04 (90.5->98.1)","saved_by":"editor","sha256":"5bedb9062bb41b22145706b9a68218a759689e39ee737ad2604f36471f9a989f","version":11},{"created_at":"2026-06-04T05:49:49Z","element_count":55,"note":"GA diverse re-design 2026-06-04: 総合 99.8→90.5 (総2階(箱)・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 90.5 (美 96 環 100 楽 91))","saved_by":"editor","sha256":"613c7f74b44d2f92eecaac12963374a26e8107fbdf6bbea25f9610dcbb8fddaf","version":10},{"created_at":"2026-06-04T04:54:16Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 66.8→99.8 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.8 (美 99 環 100 楽 100))","saved_by":"editor","sha256":"05456ac4d4b1a81e513dbd3284cf9d240f55c44961154442e1619a013f2776f0","version":9},{"created_at":"2026-06-04T04:54:16Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"da074f47985e9a99bffa8b08b1c20787ebbdac11e9d396bec3a6fa746b203a39","version":8}]}