Rende sticky e capacizzati i relay YouTube su coda dedicata.

Evita doppi ffmpeg tra host: stop solo sull'owner, ensure con requeue a capacità piena e coda Sidekiq youtube_relay isolata.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/mediamtx/publisher_sync.rb

@@ -183,7 +183,7 @@ module Mediamtx
       key = format("youtube_relay:sched:%s", session.id)
       return unless redis.set(key, "1", nx: true, ex: 10)
 
-      YoutubeRelayEnsureJob.perform_later(session.id)
+      YoutubeRelayEnsureJob.set(queue: Streams::YoutubeRelay::QUEUE).perform_later(session.id)
     end
 
     def redis