{"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-hpwhp276","versions":[{"created_at":"2026-06-04T05:55:02Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.6→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"7e6b7a19c221149a11ca67bd82e69cee8482e8c20f0a98d404bff1dec63f5b65","version":10},{"created_at":"2026-06-04T04:54:52Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 64.9→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"6a422051987b42f2f8270e93ea473e11ef4bc317f26ddf4767f06931a8dcc015","version":9},{"created_at":"2026-06-04T04:54:52Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"f20b447b34c03e3b40bd590d3dfbab654072e5ab43adaa1461d2e85023fdc232","version":8}]}