{"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-tg2ss5q1","versions":[{"created_at":"2026-07-13T10:09:59Z","element_count":73,"note":"5軸GA polish 38->90 by M5 (autonomous)","saved_by":"mcp","sha256":"8a0d272eddd9d7066ef937e5b04e7a8ea2eb0a7d28674f3eac478bbf3b6d55f8","version":3},{"created_at":"2026-07-13T09:57:02Z","element_count":101,"note":"loop3: 設計時延床 60.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"ebe1311ccd33b4753797aac435bc0c25a8fae7136d758ef762e46f6aaf008863","version":2},{"created_at":"2026-07-13T09:57:02Z","element_count":101,"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}]}