refactor: full-stack restructure with multi-tenancy, workspace management, and K8s diagnostics

- Add Workspace domain (entity, repository, service, handler, DTO)
- Add multi-tenant K8s client with tenant binding and quota management
- Add K8s diagnostics client (instance diagnostics)
- Add authorization middleware (authz package)
- Restructure frontend to feature-based architecture (features/)
- Add User Management page in configuration
- Add AccessDenied page and route guards
- Refactor shared components (form inputs, layout, UI)
- Update Tailwind config for new design system
- Add comprehensive documentation (docs/, tasks/, plans)
- Improve cluster service with better kubeconfig handling
- Add tests for crypto, config, helm client, tenant binding

backend/internal/domain/repository/oci_client.go

@@ -7,26 +7,29 @@ import (
 
 // OCIClient OCI Registry 客户端接口（Output Port）
 type OCIClient interface {
-	// ListRepositories 列出 Registry 中的所有 repositories
-	ListRepositories(ctx context.Context, registry *entity.Registry) ([]string, error)
-	
+	// ListRepositories 列出 Registry 中的 repositories.
+	// artifactType 支持 "chart" 和 "all"，默认由调用方决定。
+	ListRepositories(ctx context.Context, registry *entity.Registry, artifactType string) ([]string, error)
+
 	// ListArtifacts 列出指定 repository 的所有 artifacts
 	// mediaTypeFilter: "all", "image", "chart", "other" - 使用模糊匹配过滤
 	ListArtifacts(ctx context.Context, registry *entity.Registry, repository, mediaTypeFilter string) ([]*entity.Artifact, error)
-	
+
 	// GetArtifact 获取指定 artifact 的详细信息
 	GetArtifact(ctx context.Context, registry *entity.Registry, repository, reference string) (*entity.Artifact, error)
-	
+
 	// GetValuesSchema 获取 Helm Chart 的 values schema
 	GetValuesSchema(ctx context.Context, registry *entity.Registry, repository, reference string) (string, error)
-	
+
+	// GetValuesYAML 获取 Helm Chart 原始 values.yaml
+	GetValuesYAML(ctx context.Context, registry *entity.Registry, repository, reference string) (string, error)
+
 	// PullArtifact 下载 artifact 到本地
 	PullArtifact(ctx context.Context, registry *entity.Registry, repository, reference, destPath string) error
-	
+
 	// PushArtifact 推送 artifact 到 Registry
 	PushArtifact(ctx context.Context, registry *entity.Registry, repository, tag, sourcePath string) error
-	
+
 	// CheckHealth 检查 Registry 健康状态
 	CheckHealth(ctx context.Context, registry *entity.Registry) error
 }
-