{"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-ao46w9oi","versions":[{"created_at":"2026-06-26T06:28:48Z","element_count":82,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"8aab6c3899ab4eb049e78920c3f97fd438b81672d26aafad36e1be81e027eeb3","version":3},{"created_at":"2026-06-26T06:24:17Z","element_count":119,"note":"loop3: 設計時延床 78.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"761fd17281ee0494aa1da2269ff98821b0b45a206bf47b144d5db8fba49f3df7","version":2},{"created_at":"2026-06-26T06:24:17Z","element_count":119,"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}]}