{"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-dcr7bdx1","versions":[{"created_at":"2026-06-04T05:52:15Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 95.9→97.9 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 97.9 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"63822c7e5266481faad7586d826bd8b3e24b54d8786f315a16f8a7a9e1e7103c","version":10},{"created_at":"2026-06-04T04:54:48Z","element_count":102,"note":"GA batch-improve 2026-06-04: 総合 65.2→95.9 (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 95.9 (美 94 環 100 楽 100))","saved_by":"editor","sha256":"41385a077f5fb0eabea326c87e1bd0d7da09e73c7e72baf5ba9760ed90a234c8","version":9},{"created_at":"2026-06-04T04:54:48Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"2aaabfdd3aa936493dd596f7f0bedb4380de643de412a04200758fc6134e4614","version":8}]}