Billing Stripe, link regia mobile e staff solo trasmissione.

Aggiunge fatturazione club, pagina regia condivisibile senza account, roster squadre e rimuove la modalità controller dall'app (v1.1.0).

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

backend/app/channels/session_channel.rb

@@ -1,19 +1,31 @@
 class SessionChannel < ApplicationCable::Channel
   include CableBroadcastable
   def subscribed
-    session = StreamSession.joins(match: :team)
-                           .merge(current_user.manageable_teams)
-                           .find(params[:session_id])
+    session = resolve_session
+    reject unless session && session.id.to_s == params[:session_id].to_s
+
     stream_for session
     session.device_states.find_or_create_by!(device_role: params[:device_role] || "controller")
   end
 
+  def resolve_session
+    if connection.regia_session
+      connection.regia_session
+    else
+      StreamSession.joins(match: :team)
+                   .merge(connection.current_user.manageable_teams)
+                   .find_by(id: params[:session_id])
+    end
+  end
+
   def unsubscribed
     stop_all_streams
   end
 
   def receive(data)
-    session = StreamSession.find(params[:session_id])
+    session = resolve_session
+    return unless session
+
     handle_message(session, data)
   end