stack

type Backend interface {
	// Name returns the backend identifier (e.g., "k3d", "k3s")
	Name() string

	// Init generates backend-specific cluster configuration files
	Init(cfg *config.Config, stackID string) error

	// Up creates or starts the cluster and returns kubeconfig contents
	Up(cfg *config.Config, stackID string) (kubeconfigData []byte, err error)

	// IsRunning returns true if the cluster is currently running
	IsRunning(cfg *config.Config, stackID string) (bool, error)

	// Down stops the cluster without destroying configuration or data
	Down(cfg *config.Config, stackID string) error

	// Destroy removes the cluster entirely (containers/processes)
	Destroy(cfg *config.Config, stackID string) error

	// DataDir returns the storage path for the local-path-provisioner.
	// For k3d this is "/data" (Docker volume mount point).
	// For k3s this is the absolute host path to cfg.DataDir.
	DataDir(cfg *config.Config) string

	// Prerequisites checks that required software/permissions are available
	Prerequisites(cfg *config.Config) error
}

type K3dBackend struct{}

type K3sBackend struct{}