Stabilizza regia, live web e sync punteggi app nativa.

Corregge scadenza token regia oltre le 8h, tabellone HTML sulla pagina live,
pulsanti pausa/ripresa in regia, link admin e broadcast ActionCable diretto.
App Android: overlay branding, sync score da regia via WebSocket con reconnect e poll.

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

backend/app/controllers/api/v1/stream_sessions_controller.rb

@@ -100,13 +100,31 @@ module Api
       end
 
       def network_test
+        upload_mbps = params[:upload_mbps].to_f
+        preset = Sessions::SelectQuality.call(upload_mbps: upload_mbps)
+        @session.update!(
+          quality_preset: preset[:id],
+          target_bitrate: preset[:target_bitrate],
+          target_fps: preset[:target_fps]
+        )
         @session.stream_events.create!(
           event_type: "network_test",
-          metadata: params.permit(:download_mbps, :upload_mbps, :latency_ms, :network_type).to_h,
+          metadata: params.permit(:download_mbps, :upload_mbps, :latency_ms, :network_type)
+            .to_h.merge(
+              "quality_preset" => preset[:id],
+              "target_bitrate" => preset[:target_bitrate]
+            ),
           occurred_at: Time.current
         )
-        ready = params[:upload_mbps].to_f >= (@session.target_bitrate / 1_000_000.0 * 0.8)
-        render json: { ready: ready, target_upload_mbps: @session.target_bitrate / 1_000_000.0 }
+        target_upload = preset[:target_bitrate] / 1_000_000.0
+        ready = upload_mbps >= (target_upload * Sessions::SelectQuality::UPLOAD_HEADROOM)
+        render json: {
+          ready: ready,
+          target_upload_mbps: target_upload,
+          quality_preset: preset[:id],
+          target_bitrate: preset[:target_bitrate],
+          target_fps: preset[:target_fps]
+        }
       end
 
       def youtube_stats