{"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-ggzmklof","versions":[{"created_at":"2026-06-13T15:02:40Z","element_count":68,"note":"5軸GA polish 45->94 by M5 (autonomous)","saved_by":"mcp","sha256":"abc3dec8ba8d0cc4a4ad4169f3d4b00d2751bd1584246d8a3f61deb7fe18dbd5","version":3},{"created_at":"2026-06-13T14:55:06Z","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":"410f1446b4c048cf09c80783603dfcf6fbe7b00898417737c0ace8a061b7685d","version":2},{"created_at":"2026-06-13T14:55:05Z","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}]}