Risolve timeout creazione sessione YouTube lato app.

La setup broadcast YouTube (~23s) passa in background job; l'API risponde
subito. Aumentato anche il timeout Dio mobile per createSession YouTube.

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

backend/app/jobs/youtube_broadcast_setup_job.rb

@@ -0,0 +1,12 @@
+class YoutubeBroadcastSetupJob < ApplicationJob
+  queue_as :default
+
+  retry_on Youtube::SetupBroadcast::Error, wait: 10.seconds, attempts: 3
+
+  def perform(session_id, youtube_channel = nil)
+    session = StreamSession.find_by(id: session_id)
+    return unless session
+
+    Youtube::SetupBroadcast.call(session, youtube_channel: youtube_channel.presence)
+  end
+end

backend/app/services/sessions/create.rb

@@ -27,10 +27,10 @@ module Sessions
         status: "idle"
       )
 
+      youtube_channel = nil
       if session.platform == "youtube"
         youtube_channel = @params[:youtube_channel].presence
         assert_youtube_channel!(youtube_channel)
-        attach_youtube_broadcast!(session, youtube_channel: youtube_channel)
       end
 
       StreamSession.transaction do
@@ -40,10 +40,13 @@ module Sessions
         mtx.create_path(session)
         mtx.create_overlay_path(session)
         start_overlay_relay(session)
-        start_youtube_relay(session)
         log_event(session, "pairing", { created: true, platform: session.platform })
       end
 
+      if session.platform == "youtube"
+        YoutubeBroadcastSetupJob.perform_later(session.id, youtube_channel)
+      end
+
       session
     end
 
@@ -60,18 +63,7 @@ module Sessions
     end
 
     def attach_youtube_broadcast!(session, youtube_channel: nil)
-      yt = Youtube::BroadcastService.new(session.match.team, youtube_channel: youtube_channel)
-      title = "#{session.match.team.name} vs #{session.match.opponent_name}"
-      broadcast = yt.create_broadcast!(
-        title: title,
-        privacy_status: session.privacy_status,
-        scheduled_at: session.match.scheduled_at
-      )
-
-      session.youtube_broadcast_id = broadcast[:broadcast_id]
-      session.youtube_stream_id = broadcast[:stream_id]
-      session.stream_key = broadcast[:stream_key]
-      session.rtmp_url = broadcast[:rtmp_url]
+      Youtube::SetupBroadcast.call(session, youtube_channel: youtube_channel)
     end
 
     def start_overlay_relay(session)
@@ -80,14 +72,6 @@ module Sessions
       Rails.logger.warn("[Sessions::Create] Overlay relay: #{e.message}")
     end
 
-    def start_youtube_relay(session)
-      return unless session.platform == "youtube"
-
-      Streams::YoutubeRelay.start(session)
-    rescue Streams::YoutubeRelay::Error => e
-      Rails.logger.warn("[Sessions::Create] YouTube relay: #{e.message}")
-    end
-
     def log_event(session, type, metadata)
       session.stream_events.create!(event_type: type, metadata: metadata, occurred_at: Time.current)
     end

backend/app/services/youtube/setup_broadcast.rb

@@ -0,0 +1,52 @@
+module Youtube
+  # Crea broadcast/stream YouTube e avvia relay (operazione lenta, ~20s).
+  class SetupBroadcast
+    class Error < StandardError; end
+
+    def self.call(session, youtube_channel: nil)
+      new(session, youtube_channel: youtube_channel).call
+    end
+
+    def initialize(session, youtube_channel: nil)
+      @session = session
+      @youtube_channel = youtube_channel
+    end
+
+    def call
+      @session.reload
+      return @session if @session.terminal?
+      return @session if @session.platform != "youtube"
+      return @session if @session.youtube_broadcast_id.present?
+
+      yt = BroadcastService.new(@session.match.team, channel: @youtube_channel)
+      title = "#{@session.match.team.name} vs #{@session.match.opponent_name}"
+      broadcast = yt.create_broadcast!(
+        title: title,
+        privacy_status: @session.privacy_status,
+        scheduled_at: @session.match.scheduled_at
+      )
+
+      @session.update!(
+        youtube_broadcast_id: broadcast[:broadcast_id],
+        youtube_stream_id: broadcast[:stream_id],
+        stream_key: broadcast[:stream_key],
+        rtmp_url: broadcast[:rtmp_url]
+      )
+
+      Streams::YoutubeRelay.start(@session)
+      @session.stream_events.create!(
+        event_type: "youtube_ready",
+        metadata: { broadcast_id: broadcast[:broadcast_id] },
+        occurred_at: Time.current
+      )
+      @session
+    rescue BroadcastService::Error => e
+      @session.stream_events.create!(
+        event_type: "error",
+        metadata: { source: "youtube_setup", message: e.message },
+        occurred_at: Time.current
+      )
+      raise Error, e.message
+    end
+  end
+end