{"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-su0iakfo","versions":[{"created_at":"2026-06-13T20:46:34Z","element_count":74,"note":"5軸GA polish 45->93 by M5 (autonomous)","saved_by":"mcp","sha256":"3083bf9eb964ef851c6fe6f3a789f1729e4f77f92c5c9c2ed0131c8bae7fe5e9","version":3},{"created_at":"2026-06-13T20:32:24Z","element_count":88,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"2dad2e06eb855e78fcfb2ed37c08c9106c500f96221a0e246185ff8a3ea6d8f4","version":2},{"created_at":"2026-06-13T20:32:22Z","element_count":88,"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}]}