{"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-21xh81fp","versions":[{"created_at":"2026-06-04T05:51:43Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 97.9→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":"0b02d49a51a8c03576b1e2e584b75f74d18a4782293eb613763c3f7a86f1c5af","version":10},{"created_at":"2026-06-04T04:54:48Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 65.2→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":"1e4a543624a5635ed4aa7b2ee9d0e060be519b505627111d0dae4ec28c87fbba","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":"0b2e543575708856c5a64e31c1c5d62fc39d9524acc091ec1fa08f127c8db028","version":8}]}