Club come entità principale, branding e fix infrastruttura streaming.

Introduce clubs con abbonamento, branding Active Storage e flusso registrazione società; corregge healthcheck MediaMTX (immagine distroless) e allinea dominio produzione matchlivetv.it.

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

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

@@ -40,11 +40,11 @@ module Api
       private
 
       def set_team
-        @team = current_user.teams.find(params[:team_id])
+        @team = current_user.manageable_teams.find(params[:team_id])
       end
 
       def set_match
-        @match = Match.joins(:team).merge(current_user.teams).find(params[:id])
+        @match = Match.joins(:team).merge(current_user.manageable_teams).find(params[:id])
       end
 
       def match_params