fix: dashboard metrics 慢查询优化(index+UNIX_TIMESTAMP分组) + 批量升级版本号修复

backend/internal/api/handlers/agent_task.go

@@ -191,7 +191,7 @@ func (h *AgentTaskHandler) QuickSetupRules(c *gin.Context) {
 		{Name: "CPU使用率(Warn)", Metric: "cpu", Operator: ">", Threshold: 80},
 		{Name: "内存使用率(Warn)", Metric: "mem", Operator: ">", Threshold: 80},
 		{Name: "磁盘使用率(Warn)", Metric: "disk", Operator: ">", Threshold: 80},
-		{Name: "网络带宽使用率(Warn)", Metric: "net", Operator: ">", Threshold: 80},
+		{Name: "FD使用率(Warn)", Metric: "fd", Operator: ">", Threshold: 80},
 	}
 
 	created := 0