{"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-kingstonhillhouse-10mohjie","versions":[{"created_at":"2026-07-29T19:30:50Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0ea7ea90c0f8e24ec48ceb452270f0817e1d13594d1919eba6a4fa4e60e24294","version":2},{"created_at":"2026-07-29T19:30:50Z","element_count":105,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}