{"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-2cfwiixu","versions":[{"created_at":"2026-06-13T16:04:14Z","element_count":69,"note":"5軸GA polish 42->93 by M5 (autonomous)","saved_by":"mcp","sha256":"9f22264fd2bf51b070379f508a39ddc7aeb57bad796ff35a0408016b59bdc0cb","version":3},{"created_at":"2026-06-13T15:59:27Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"a0a1ac72854b01f6ef637ca4b61aca6345b324e51561ef73e62fcdd2b2bb6b13","version":2},{"created_at":"2026-06-13T15:59:26Z","element_count":101,"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}]}