Library feed album items carry the catalog label id next to its name.
Library > Releases (list) gains a LABEL column between the item and its
quality — a link to the label page when the id is known, muted text
otherwise — hidden on the label page itself and on narrow kiosk rows.
AlbumListRow and AlbumCard menus gain "View label" (the card only where its
host passes the id: the library grid does). The library's release-wide
availability helper is shared with the playlist rows for the next change.
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