feat(frontend): add Helm chart browser, monitoring, chart-references and values templates pages

Add new frontend pages for the multi-tenant OCDP platform:

- Charts page (/charts): Browse Harbor OCI registries to list Helm chart repositories
  and versions, with deploy modal to launch charts on selected clusters
- Monitoring page (/monitoring): Display cluster metrics (CPU/Memory/GPU usage)
  and per-node details with resource utilization bars
- Chart References page (/chart-references): CRUD for chart metadata references
- Values Templates page (/templates): CRUD for Helm values templates with version
  history and rollback support
- Sidebar: Add Charts navigation, update Storage and Templates links
- api.ts: Add all API client functions (clusterApi, registryApi, instanceApi,
  monitoringApi, storageApi, chartReferenceApi, valuesTemplateApi,
  workspaceApi, userApi) with full TypeScript types

Note: deploy flow and values template rollback not yet end-to-end tested.

backend/internal/adapter/input/http/dto/registry_dto.go

@@ -23,12 +23,15 @@ type UpdateRegistryRequest struct {
 // RegistryResponse Registry 响应（敏感数据已脱敏）
 type RegistryResponse struct {
 	ID          string `json:"id"`
+	WorkspaceID string `json:"workspace_id,omitempty"`
+	OwnerID     string `json:"owner_id,omitempty"`
 	Name        string `json:"name"`
 	URL         string `json:"url"`
 	Description string `json:"description"`
 	Username    string `json:"username,omitempty"`    // 明文返回用户名（不敏感）
 	Password    string `json:"password,omitempty"`    // 脱敏显示（••••••••）
 	HasPassword bool   `json:"hasPassword"`          // 是否已设置密码
+	IsShared    bool   `json:"is_shared"`
 	Insecure    bool   `json:"insecure"`
 	CreatedAt   string `json:"createdAt"`
 	UpdatedAt   string `json:"updatedAt"`