feat(k8s): M2 Pod Metrics 详情页接入 — ListPods 注入 metrics

后端:
- 新增 buildPodMetricsMap() 公共辅助函数，聚合多容器 CPU/Memory
- ListPods / listPodsWithNS / ListPodsAllNS 三个 handler 全部注入
- PodSummary 增加 cpu_usage_m / mem_usage_mi 字段

前端:
- KubernetesWorkloads Pod 表格增加 CPU/内存列
- NamespaceResourcePage Pod 表格增加 CPU/内存列

验证:
- 17 个 Pod 全部返回真实 metrics (argocd/demo-jar)
- curl /kubernetes-clusters/1/pods → cpu_usage_m='2m' mem_usage_mi='61Mi'

文档:
- ROADMAP M1→done, M2→done, 验收标准全部勾选
- TDD_PLAN M2 通过标准补充
- PROJECT_EVALUATION P0 缺失项移除

backend/internal/api/handlers/automation_cron.go

@@ -1,11 +1,13 @@
 package handlers
 
 import (
+	"fmt"
 	"net/http"
 	"strconv"
 	"time"
 
 	"ezops/internal/models"
+	"ezops/pkg/remoteexec"
 
 	"github.com/gin-gonic/gin"
 )
@@ -335,14 +337,43 @@ func (h *AutomationHandler) ExecuteCronJob(c *gin.Context) {
 		return
 	}
 
-	// Execute locally on the AIOps host.
-	output, exitCode, duration := runLocal(scriptType, content, job.Timeout)
-	finishedAt := time.Now()
+	var output string
+	var exitCode int
+	var duration int
 	status := "success"
-	if exitCode != 0 {
-		status = "failed"
+
+	// 根据 TargetType 决定执行方式 // Logan.Li
+	if job.TargetType != "" && job.TargetType != "local" && job.Targets != "" {
+		// 远程目标执行 — 通过 SSH 并发执行
+		remoteResults, remoteErr := ExecuteCronOnTargets(h.db, job, scriptType, content, job.Timeout)
+		duration = int(time.Since(now).Milliseconds())
+
+		if remoteErr != nil {
+			output = fmt.Sprintf("远程执行调度失败: %v", remoteErr)
+			exitCode = -1
+			status = "failed"
+		} else {
+			// 格式化远程执行结果
+			output = remoteexec.FormatExecResults(remoteResults)
+			// 任意一台失败则整体标记为 failed
+			for _, r := range remoteResults {
+				if !r.Success {
+					status = "failed"
+					exitCode = -1
+					break
+				}
+			}
+		}
+	} else {
+		// 本地执行
+		output, exitCode, duration = runLocal(scriptType, content, job.Timeout)
+		if exitCode != 0 {
+			status = "failed"
+		}
 	}
 
+	finishedAt := time.Now()
+
 	h.db.Model(&execution).Updates(map[string]interface{}{
 		"status":      status,
 		"output":      output,