{"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-2ilw080c","versions":[{"created_at":"2026-06-04T05:55:24Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.3→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"e3cd5c8d01a19b0505ae77c20801c8188b9d1be6b4f5580b5a9bdd0fb9e4f1e3","version":10},{"created_at":"2026-06-04T04:57:29Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 46.9→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"9bc3a228e79acf7ab38a45b50159c8d25741c4f3f48b01692588ca1d636ad31b","version":9},{"created_at":"2026-06-04T04:57:29Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6ad0664b3e73ab7e61473fb53a5d980d274e2456d2eaa54b7317460f03a77428","version":8}]}