Mounted Emby libraries were always appended to web/Emby library lists and
detail/play routes without checking allowed_library_ids, so restricted
users could still see and open them. Filter remotes with the same
visibility policy as local libraries across list/detail/series/stream and
Emby Views/Items/search/playback, and label mounts in the admin ACL UI.
Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: truewhile <truewhile@users.noreply.github.com>