重构 auto-check：拆分包架构，精简 workflow 为纯调度循环

各包职责：
- config: 分类 YAML 配置
- model: Device/IP/MAC 公共类型
- discovery: 扫描 + ARP MAC 解析 + Devices 变量
- sshclient: SSH 连接
- stress: stress-ng/stressapptest 压测 + Results 变量
- report: 80mm 热敏模板/sparkline/打印 + Printed 变量
- workflow: 永久循环调度 + Start/Stop

workflow 已精简为 100 行纯编排，所有业务逻辑下沉各包

auto-check/pkg/stress/runner.go

@@ -5,21 +5,27 @@ import (
 	"strings"
 	"time"
 
+	"auto-check/pkg/config"
+	"auto-check/pkg/sshclient"
+
 	"golang.org/x/crypto/ssh"
 )
 
+// Results 测试结果表（IP → 报告），包级公开
+var Results = make(map[string]*Report)
+
 // Runner 压力测试调度器
 type Runner struct {
-	Config  Config
-	Types   []TestType
+	Config   Config
+	Types    []TestType
 	Executor Executor
 }
 
 // NewRunner 创建调度器
 func NewRunner(cfg Config, types []TestType, executor Executor) *Runner {
 	return &Runner{
-		Config:  cfg,
-		Types:   types,
+		Config:   cfg,
+		Types:    types,
 		Executor: executor,
 	}
 }
@@ -133,6 +139,62 @@ func (r *Runner) RunAll(clients map[string]*ssh.Client) []*Report {
 	return reports
 }
 
+// IsPassed 报告是否通过
+func IsPassed(rpt *Report) bool {
+	return rpt != nil && rpt.Failed == 0 && rpt.Errors == 0
+}
+
+// Status 报告状态字符串：pass / fail / untested
+func Status(rpt *Report) string {
+	if rpt == nil {
+		return "untested"
+	}
+	if IsPassed(rpt) {
+		return "pass"
+	}
+	return "fail"
+}
+
+// ParseTypes 逗号分隔字符串 → TestType 列表
+func ParseTypes(s string) []TestType {
+	var types []TestType
+	for _, t := range strings.Split(s, ",") {
+		if t = strings.TrimSpace(t); t != "" {
+			types = append(types, TestType(t))
+		}
+	}
+	return types
+}
+
+// TestDevice 对单台设备执行 SSH 登录 + 压力测试（业务入口）
+func TestDevice(ip string, cfg config.Config) *Report {
+	client := sshclient.NewClient(cfg.SSH.User, cfg.SSH.Password, cfg.SSH.KeyFile, cfg.SSH.Port, cfg.Scan.Timeout)
+
+	conn, err := client.Connect(ip)
+	if err != nil {
+		fmt.Printf("  [测试] %s SSH 连接失败: %v\n", ip, err)
+		return NewSSHFailReport(ip, err)
+	}
+	defer conn.Close()
+
+	return NewRunner(
+		Config{Duration: cfg.Stress.Duration, Threads: cfg.Stress.Threads, DiskSizeMB: 1024, TempLogInt: 10 * time.Second},
+		ParseTypes(cfg.Stress.Types),
+		client,
+	).Run(conn, ip)
+}
+
+// NewSSHFailReport 构造 SSH 连接失败报告
+func NewSSHFailReport(ip string, err error) *Report {
+	return &Report{
+		IP:        ip,
+		StartTime: time.Now(),
+		Results:   []Result{{Type: "ssh", Status: "fail", Error: err.Error()}},
+		Failed:    1,
+	}
+}
+
+// min 取较小值
 func min(a, b int) int {
 	if a < b {
 		return a