{"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-ericms8w","versions":[{"created_at":"2026-07-16T07:24:02Z","element_count":89,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"9aeb4c707e95c56dd912c5bccf8fe9aad8cfb40e5a75ae54d74edd46b66eae04","version":3},{"created_at":"2026-07-16T07:17:59Z","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":"6f9a1c82dad8666a211a2f5018d96ba063f08f06890351b84d97c1445bc94f43","version":2},{"created_at":"2026-07-16T07:17:56Z","element_count":126,"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}]}