feat(k8s): A1 K8s 双路由体系统一 — code 路由为主, ID 路由标记 deprecated

后端:
- 新增 4 条 all-NS code 路由: services/ingresses/cronjobs/nodes
- ListNodes 改用 getK8sClientByCode (兼容 ID+code)
- ID 域资源路由标记 // Deprecated

前端:
- clusterApi/nodeApi/workloadApi 资源方法迁移到 code 路由
- KubernetesClusterDetail/TopologyView/KubernetesNodes 组件从 cluster.id 迁移到 cluster.code
- 修复潜在 bug: ClusterOverviewPage 曾将 code 传给 ID-based getNodes

验证: 16/16 API 测试通过 (7 新 code 路由 + 3 旧 ID 兼容 + 6 回归)
go build=✅ tsc -b=✅ npm build=✅

backend/controller/k8s_hpa_cronjob.go

@@ -100,6 +100,27 @@ func (h *KubernetesHandler) ListCronJobs(c *gin.Context) {
 	c.JSON(http.StatusOK, model.Response{Code: 200, Data: cronjobs.Items})
 }
 
+// ListCronJobsAllNS lists all CronJobs across all namespaces using clusterCode.
+// Canonical route: GET /kubernetes/:clusterCode/cronjobs
+func (h *KubernetesHandler) ListCronJobsAllNS(c *gin.Context) {
+	clusterID := h.resolveClusterCode(c.Param("clusterCode"))
+	if clusterID == 0 {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: "cluster not found"})
+		return
+	}
+	client, _, err := h.getK8sClient(clusterID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: err.Error()})
+		return
+	}
+	cronjobs, err := client.ListCronJobs()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, model.Response{Code: 500, Message: "K8s API error: " + err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, model.Response{Code: 200, Data: cronjobs.Items})
+}
+
 // CreateCronJob 创建 CronJob
 func (h *KubernetesHandler) CreateCronJob(c *gin.Context) {
 	clusterID, _ := strconv.Atoi(c.Param("id"))