{"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-7n8nfbpj","versions":[{"created_at":"2026-06-13T17:24:05Z","element_count":74,"note":"5軸GA polish 45->94 by M5 (autonomous)","saved_by":"mcp","sha256":"2254350adce2fe19ba4fae96b2f23d1be82f4ab214571d7a74a46d2b9caacb48","version":3},{"created_at":"2026-06-13T17:16:28Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"7e7505f4cd8683ddb07a8646666e4bc4eda1fc1d887d8a3ef7aed0bef920af6a","version":2},{"created_at":"2026-06-13T17:16:24Z","element_count":87,"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}]}