{"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-2-h7roxrar","versions":[{"created_at":"2026-06-04T17:01:40Z","element_count":77,"note":"polish: batch-improve-100 2026-06-04 (90.6->94.8)","saved_by":"editor","sha256":"c686ec03b8467a140ec7d257375f823ae09d26a5c5124bdbbf251f21b9918f35","version":11},{"created_at":"2026-06-04T05:56:11Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 90.6→90.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 90.6 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"411fdc701863e30020d893956fce16abb3f01ad38ab16c9e23cef1d5fdc392c3","version":10},{"created_at":"2026-06-04T04:58:16Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 44.9→90.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 90.6 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"f8e5f2484b4da4e80cb3b29f90b059267bf97447a5f0cb7370246c85403fd47d","version":9},{"created_at":"2026-06-04T04:58:16Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"4e224887379cf2c664b63404ad66ddbd580ccd5722fc95aef13438ef8ef4fa14","version":8}]}