Filesystem statistics from the statvfs@openssh.com extension, as the pinned client decodes them.
statvfs@openssh.com
@type t() :: %Opsmaru.Incus.SFTP.StatVFS{ bavail: term(), bfree: term(), blocks: term(), bsize: term(), favail: term(), ffree: term(), files: term(), flag: term(), frsize: term(), fsid: term(), namemax: term() }