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/public/web_base_controller.rb

@@ -10,9 +10,12 @@ module Public
       redirect_to public_login_path, alert: "Accedi per continuare"
     end
 
-    def require_team_owner!(team)
-      membership = current_user.user_teams.find_by(team: team)
-      redirect_to public_prezzi_path, alert: "Accesso non consentito" unless membership&.role == "owner"
+    def require_club_owner!(club)
+      redirect_to public_prezzi_path, alert: "Accesso non consentito" unless club.owned_by?(current_user)
+    end
+
+    def require_club_owner_for_team!(team)
+      redirect_to public_prezzi_path, alert: "Accesso non consentito" unless team.club&.owned_by?(current_user)
     end
   end
 end