Fix PCI Stripe e anteprima regia; checkout sempre hosted.

Blocca l'invio di numeri carta dall'API server, usa Checkout anche per i cambi piano e nasconde correttamente il placeholder video in regia.

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

backend/app/views/public/regia/show.html.erb

@@ -43,7 +43,7 @@
     <% unless @stream_closed %>
       <video id="regia-preview" playsinline muted autoplay></video>
     <% end %>
-    <div id="regia-preview-placeholder" class="regia-preview__placeholder"<%= ' hidden' unless @stream_closed %>>
+    <div id="regia-preview-placeholder" class="regia-preview__placeholder">
       <%= @stream_closed ? "Diretta terminata" : "Anteprima in attesa del segnale…" %>
     </div>
   </div>
@@ -94,4 +94,4 @@
   </div>
 </div>
 
-<script src="/regia.js?v=1"></script>
+<script src="/regia.js?v=2"></script>

backend/app/views/public/teams/billing.html.erb

@@ -29,7 +29,7 @@
         <% elsif plan.slug == "free" %>
           <p style="color:#888;font-size:0.85rem">Contatta il supporto per downgrade.</p>
         <% elsif MatchLiveTv.stripe_enabled? %>
-          <%= link_to "Attiva #{plan.name}", public_team_checkout_path(@team, plan: plan.slug), class: "btn btn-primary" %>
+          <%= link_to "Attiva #{plan.name}", public_club_checkout_path(@team.club, plan: plan.slug), class: "btn btn-primary" %>
         <% else %>
           <p style="color:#888">Stripe non configurato</p>
         <% end %>
@@ -42,7 +42,7 @@
   </div>
 
   <% if @entitlements.premium_active? && MatchLiveTv.stripe_enabled? %>
-    <p style="margin-top:20px"><%= button_to "Gestisci su Stripe", public_team_portal_path(@team), class: "btn btn-secondary" %></p>
+    <p style="margin-top:20px"><%= button_to "Gestisci su Stripe", public_club_portal_path(@team.club), class: "btn btn-secondary" %></p>
   <% end %>
 
   <p><%= link_to "← Dettagli squadra", public_team_details_path(@team) %></p>