List rows show hostname only — the path is hidden, so same-domain entries are indistinguishable
`AdditiveList`'s `host()` drops the pathname, so two Gates Foundation links both render as `gatesfoundation.org` and can't be told apart.
`AdditiveList`'s `host()` drops the pathname, so two Gates Foundation links both render as `gatesfoundation.org` and can't be told apart.