Aggiunge copertina sponsor custom solo Premium Full, con override in wizard e slate sui nodi di streaming.

Permette upload da portale e app con ereditarietà partita→squadra→società, generazione MP4 via ffmpeg e distribuzione su home lab e nodi CPX per pause e assenza segnale.

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

backend/app/controllers/public/clubs_controller.rb

@@ -64,17 +64,26 @@ module Public
 
     def edit
       require_club_owner!(@club)
+      @entitlements = @club.teams.first&.entitlements
     end
 
     def update
       require_club_owner!(@club)
+      @entitlements = @club.teams.first!.entitlements
       @club.assign_attributes(club_params)
       attach_branding_logo(@club)
+      attach_cover_image(@club, entitlements: @entitlements)
       @club.save!
+      enqueue_cover_slate_generation(@club)
       redirect_to public_club_path(@club), notice: t("flash.clubs.updated")
     rescue ActiveRecord::RecordInvalid => e
+      @entitlements = @club.teams.first&.entitlements
       flash.now[:alert] = e.record.errors.full_messages.join(", ")
       render :edit, status: :unprocessable_entity
+    rescue Teams::EntitlementError => e
+      @entitlements = @club.teams.first&.entitlements
+      flash.now[:alert] = e.message
+      render :edit, status: :unprocessable_entity
     end
 
     def billing