采集成功率保留2位小数（Math.Round）

src/CncRepository/Impl/Dashboard/DashboardRepository.cs

@@ -31,7 +31,7 @@ namespace CncRepository.Impl.Dashboard
                 var successCount = conn.ExecuteScalar<int>(@"SELECT COUNT(1) FROM cnc_log.log_collect_raw WHERE is_success = 1 AND request_time >= CURDATE()");
                 var failCount = conn.ExecuteScalar<int>(@"SELECT COUNT(1) FROM cnc_log.log_collect_raw WHERE is_success = 0 AND request_time >= CURDATE()");
                 var totalCount = successCount + failCount;
-                decimal collectSuccessRate = totalCount > 0 ? (decimal)successCount / totalCount * 100 : 0m;
+                decimal collectSuccessRate = totalCount > 0 ? Math.Round((decimal)successCount / totalCount * 100, 2) : 0m;
 
                 var todayCuttingTime = conn.ExecuteScalar<int>(@"SELECT COALESCE(SUM(total_cutting_time),0) FROM cnc_daily_production WHERE production_date = CURDATE()");
                 var runningMachines = conn.ExecuteScalar<int>(@"SELECT COUNT(1) FROM cnc_machine WHERE last_device_status = 'running'");