{"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-ntk8gbkr","versions":[{"created_at":"2026-06-13T14:35:11Z","element_count":84,"note":"5軸GA polish 47->98 by M5 (autonomous)","saved_by":"mcp","sha256":"aaedc667c7025f3872c9a815ffbc92a8cb17b434efba792dd8128a3a3c311a74","version":3},{"created_at":"2026-06-13T14:19:40Z","element_count":134,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"073047a23e5be830c11232e115939953c6fe1f4e4d2dee6e48d34d33f0f64bf6","version":2},{"created_at":"2026-06-13T14:19:37Z","element_count":134,"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}]}