chore: silence SSH connection failure logs

auto-check/auto-check.yaml

@@ -22,7 +22,7 @@ stress:
 
 # --- 工作流 ---
 workflow:
-  interval: 30s
+  interval: 60s
 
 # --- 报告与打印 ---
 report:

auto-check/pkg/stress/runner.go

@@ -296,7 +296,6 @@ func TestDevice(ip string, cfg config.Config) *Report {
 
 	conn, err := sshclient.Connect(ip, sshCfg)
 	if err != nil {
-		fmt.Printf("  [测试] %s SSH 连接失败: %v\n", ip, err)
 		return NewSSHFailReport(ip, err)
 	}
 	defer conn.Close()