{"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-7ohjlazp","versions":[{"created_at":"2026-07-06T15:24:32Z","element_count":82,"note":"5軸GA polish 39->94 by M5 (autonomous)","saved_by":"mcp","sha256":"2ad3b6256da80ec4742ec92877532fb9c13d01f349ba26ea3ff0afe85cd5abe5","version":3},{"created_at":"2026-07-06T15:19:49Z","element_count":86,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"3debdab064315f750c2cea6c238a7aa6e3bcb689e8ffab303b5824dfc48e0f8e","version":2},{"created_at":"2026-07-06T15:19:49Z","element_count":86,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}