Jellyfin does not cascade a user delete to the Device rows redemption
creates, and DeviceManager throws for the whole listing when one device's
user is missing, so a single leftover guest 404s the dashboard devices page.
Deletes the guest's devices before the user, and sweeps devices this plugin
created whose user is already gone at startup for links torn down by older
builds.
* block plugin routes for share guests
Adds a global MVC filter that refuses share-guest accounts on any plugin
controller. Jellyfin's own API stays open, the share tag policy already
bounds it and playback needs it.
Guests are identified by the auth provider marker on the account, so this
covers a leaked token used from curl or a native client, not just the web
client where the CSS lockdown runs.
* add plugin exception list and honest wording
Config page lists installed plugins with a checkbox each, for the ones that
need to answer guests during playback. Default is unticked.
Renames the hidden selectors setting to say it is cosmetic, and stops the
readme implying the web client lockdown confines anything.
* bump to 1.0.4.0
Francois CB