Stabilizza live YouTube/RTMP e fix crash rotazione mobile.

Pipeline YouTube con relay, overlay e publisher sync lato backend; fix GL pauseGlDuringRotation su Android per evitare crash in rotazione durante lo streaming Flutter.

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

backend/app/services/sessions/create.rb

@@ -38,8 +38,6 @@ module Sessions
         session.create_score_state!
         mtx = Mediamtx::Client.new
         mtx.create_path(session)
-        mtx.create_overlay_path(session)
-        start_overlay_relay(session)
         log_event(session, "pairing", { created: true, platform: session.platform })
       end
 
@@ -66,12 +64,6 @@ module Sessions
       Youtube::SetupBroadcast.call(session, youtube_channel: youtube_channel)
     end
 
-    def start_overlay_relay(session)
-      Streams::OverlayRelay.start(session)
-    rescue Streams::OverlayRelay::Error => e
-      Rails.logger.warn("[Sessions::Create] Overlay 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/sessions/pause.rb

@@ -7,11 +7,12 @@ module Sessions
     def call
       cancel_timeout_job
       @session.pause! if @session.may_pause?
-      # Slate già su path (create_path + alwaysAvailable): stop RTMP basta, senza patch API.
+      Mediamtx::Client.new.set_always_available(@session, enabled: true)
+      # Slate su path per HLS in pausa; RTMP telefono si ferma via comando app.
       log_event("paused")
       SessionChannel.broadcast_message(@session, { type: "command", action: "pause_stream" })
       SessionChannel.broadcast_message(@session, { type: "stream_event", event: "paused" })
-      Streams::Overlay::Refresh.call(@session)
+      Youtube::LivePipeline.schedule!(@session, force: true) if @session.platform == "youtube"
       @session
     end
 

backend/app/services/sessions/resume.rb

@@ -16,7 +16,7 @@ module Sessions
       log_event("resumed")
       SessionChannel.broadcast_message(@session, { type: "command", action: "resume_stream" })
       SessionChannel.broadcast_message(@session, { type: "stream_event", event: "resumed" })
-      Streams::Overlay::Refresh.call(@session)
+      Youtube::LivePipeline.schedule!(@session, force: true) if @session.platform == "youtube"
       @session
     end
 

backend/app/services/sessions/start.rb

@@ -8,6 +8,7 @@ module Sessions
       @session.match.team.entitlements.assert_concurrent_stream!(excluding_session: @session)
       @session.begin_connect! if @session.may_begin_connect?
       @session.update!(status: "connecting") unless @session.connecting?
+      Youtube::LivePipeline.schedule!(@session, force: true) if @session.platform == "youtube"
       broadcast_status("connecting")
       @session
     end

backend/app/services/sessions/stop.rb

@@ -6,7 +6,6 @@ module Sessions
 
     def call
       cancel_timeout_job
-      Streams::OverlayRelay.stop(@session)
       Streams::YoutubeRelay.stop(@session)
       Sessions::RegiaAccess.revoke!(@session)
       @session.end_stream!