Fix YouTube in attesa: disabilita auto_stop e ricrea broadcast chiusa

YouTube chiudeva la diretta (complete) senza ingest stabile; ora
enable_auto_stop è false e SetupBroadcast.recreate! rigenera link/stream key.

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

backend/app/services/youtube/setup_broadcast.rb

@@ -7,11 +7,31 @@ module Youtube
       new(session, youtube_channel: youtube_channel).call
     end
 
+    # Nuova broadcast se YouTube ha chiuso la precedente (auto_stop / ingest perso).
+    def self.recreate!(session, youtube_channel: nil)
+      new(session, youtube_channel: youtube_channel).recreate!
+    end
+
     def initialize(session, youtube_channel: nil)
       @session = session
       @youtube_channel = youtube_channel
     end
 
+    def recreate!
+      @session.reload
+      return @session if @session.terminal?
+      return @session unless @session.platform == "youtube"
+
+      Streams::YoutubeRelay.stop(@session)
+      @session.update!(
+        youtube_broadcast_id: nil,
+        youtube_stream_id: nil,
+        stream_key: nil,
+        rtmp_url: nil
+      )
+      call
+    end
+
     def call
       @session.reload
       return @session if @session.terminal?