feat(k8s): M5 Deployment 暂停更新 + CI/CD 集成

- 后端: PauseDeployment/ResumeDeployment 客户端方法 (PATCH spec.paused)
- 后端: ID路由 + Kuboard code路由 pause/resume handlers
- 后端: Deployment 列表 summary 增加 paused 字段
- 前端: 操作菜单增加「暂停更新/恢复更新」动态切换 + 暂停 Badge
- 前端: CI/CD 发布按钮跳转流水线页面 (namespace+deployment 上下文)
- 前端: api.ts 增加 pauseDeployment/resumeDeployment 方法
- 验证: 5项端到端测试全部通过 (Python urllib)

frontend/src/services/api.ts

@@ -344,6 +344,12 @@ export const kubernetesApi = {
   restartDeployment: async (clusterCode: string, namespace: string, name: string) => {
     return http.post(`/kubernetes/${clusterCode}/namespace/${namespace}/deployments/${name}/restart`);
   },
+  pauseDeployment: async (clusterCode: string, namespace: string, name: string) => {
+    return http.post(`/kubernetes/${clusterCode}/namespace/${namespace}/deployments/${name}/pause`);
+  },
+  resumeDeployment: async (clusterCode: string, namespace: string, name: string) => {
+    return http.post(`/kubernetes/${clusterCode}/namespace/${namespace}/deployments/${name}/resume`);
+  },
   updateDeploymentImage: async (clusterCode: string, namespace: string, name: string, image: string, containerName?: string) => {
     return http.post(`/kubernetes/${clusterCode}/namespace/${namespace}/deployments/${name}/update-image`, { image, container_name: containerName });
   },