{"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-vacnp45j","versions":[{"created_at":"2026-06-04T05:52:59Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"4025115d4f75a419a54fba8e0e1e36f13574bf25295fd8156579616b2c0d3b6f","version":10},{"created_at":"2026-06-04T04:59:25Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 36.5→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"19ea96b316ac83295b5bc1efa763ad2f904646cea5a2edba13593c4ecb855e30","version":9},{"created_at":"2026-06-04T04:59:25Z","element_count":17,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"5df200a83905e724f88a783fe04c2f67ed32d90618966b240c0437b5d036c0d0","version":8}]}