Localizza errori API, sistema layout mobile e documenta allineamento iOS.

Gli header Accept-Language dalle app e i fix di padding/menu sul web chiudono il giro password-policy; il doc guida il lavoro su Mac.

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

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

@@ -20,6 +20,7 @@
 
   <h3 style="margin-top:28px;font-size:1.1rem"><%= t("billing.documents.table_heading") %></h3>
   <% if payments.any? %>
+    <div class="table-scroll">
     <table class="data billing-table">
       <thead>
         <tr>
@@ -60,6 +61,7 @@
         <% end %>
       </tbody>
     </table>
+    </div>
   <% else %>
     <p style="color:#888"><%= t("billing.documents.no_payments") %></p>
   <% end %>