{"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-v1cqy849","versions":[{"created_at":"2026-06-13T16:29:24Z","element_count":91,"note":"5軸GA polish 45->96 by M5 (autonomous)","saved_by":"mcp","sha256":"e26e06694678125953142933781a9f48ab7998709b3c039bee693f1be3327d44","version":3},{"created_at":"2026-06-13T16:15:59Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"29e6d1ac5ad08c1b3654fce47cb794d75c9b5421dbe6d4cd459a569399d880a9","version":2},{"created_at":"2026-06-13T16:15:58Z","element_count":126,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}