Billing: fatture manuali, profilo obbligatorio e piani Stripe mensile/annuale.

Rimuove link al portale Stripe in area cliente, aggiunge flusso admin per PDF
fattura e email, blocca checkout senza dati di fatturazione, allinea prezzi
a €4,90/€39,90 e €9,90/€69,90, locale italiano e documentazione deploy.

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

backend/app/views/shared/_club_subscription_status.html.erb

@@ -1,19 +1,23 @@
-<%# locals: (club:, entitlements: nil, subscription: nil) %>
+<%# locals: (club:, entitlements: nil, subscription: nil, on_billing_page: false) %>
 <% current_plan = entitlements&.plan || subscription&.plan || Plan["free"] %>
 <p style="color:#aaa;margin-bottom:8px">
   Società: <strong><%= club.name %></strong>
   · Piano attuale: <strong><%= current_plan.name %></strong>
   (valido per tutte le squadre)
-  · <%= link_to "Gestisci abbonamento", public_club_billing_path(club) %>
+  <% unless local_assigns[:on_billing_page] %>
+    · <%= link_to "Gestisci abbonamento", public_club_billing_path(club) %>
+  <% end %>
 </p>
 <% if subscription&.stripe_subscription_id.present? %>
   <p style="color:#888;font-size:0.9rem;margin-top:0">
-    Stato Stripe: <strong><%= subscription.status %></strong>
-    <% if subscription.current_period_end.present? %>
-      · Rinnovo: <strong><%= l(subscription.current_period_end, format: :long) %></strong>
-    <% end %>
     <% if subscription.cancel_at_period_end? %>
-      · <span style="color:#e53935">Disdetta alla scadenza</span>
+      <span style="color:#e53935">
+        Abbonamento valido fino al
+        <strong><%= subscription.current_period_end.present? ? l_local(subscription.current_period_end.to_date) : "fine periodo" %></strong>,
+        poi piano Free.
+      </span>
+    <% elsif subscription.current_period_end.present? %>
+      Prossimo rinnovo: <strong><%= l_local(subscription.current_period_end) %></strong>
     <% end %>
   </p>
 <% end %>