The tab layout takes an optional homeHref and homeLabel from its host. When a URL is given it draws a
link directly above the rail's Collapse button, in the same box, and a phone shows it at the top of the
drawer. It mirrors in Arabic and slims with the rail. With no URL nothing changes, so the Plugin Studio
and every other host look exactly as before. A javascript:, data: or vbscript: URL is ignored.
The gallery accepts home-href and home-label (or profile-config homeHref and homeLabel) and passes them
on; its own "Back to homepage" is the fallback label in all 11 languages.
Prayer Mobilization now reads Prayer Progress, UPG 100 List Posters (renamed in all 11 languages), then
Country Posters, which mounts its composite view and leaves the Experimental shelf. Posterverse, the
second shell, is kept off this shelf so a shell never opens inside a shell.
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