{"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-j2ca0qul","versions":[{"created_at":"2026-07-14T09:34:18Z","element_count":82,"note":"5軸GA polish 39->94 by M5 (autonomous)","saved_by":"mcp","sha256":"ef2b5328936056e6b3e0f9856a4496abc48610eebda51734e9d593dadf21a53a","version":3},{"created_at":"2026-07-14T09:23:51Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"5d047923bb92f3ee5193cf59e0fee7a12baddbbe74c7fd5217d5ccc11ea9a566","version":2},{"created_at":"2026-07-14T09:23:50Z","element_count":101,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}