Completa i18n IT/EN/FR/DE/ES su sito pubblico, area autenticata e admin.

Tutte le view marketing, legali, viewer, dashboard e admin usano t(); mailer utente-facing e flash localizzati; admin con LocaleResolver e selettore lingua.

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

backend/app/views/admin/sessions/index.html.erb

@@ -1,6 +1,14 @@
-<h2>Stream Sessions</h2>
+<h2><%= t("admin.sessions.index.title") %></h2>
   <table class="admin-table">
-  <thead><tr><th>Match</th><th>Status</th><th>Disconnects</th><th>Link</th><th></th></tr></thead>
+  <thead>
+    <tr>
+      <th><%= t("admin.sessions.index.table.match") %></th>
+      <th><%= t("admin.sessions.index.table.status") %></th>
+      <th><%= t("admin.sessions.index.table.disconnects") %></th>
+      <th><%= t("admin.sessions.index.table.link") %></th>
+      <th></th>
+    </tr>
+  </thead>
   <tbody>
     <% @sessions.each do |s| %>
       <tr>
@@ -11,9 +19,9 @@
           <% admin_session_watch_links(s).each do |link| %>
             <%= link_to link[:label], link[:url], target: "_blank", rel: "noopener", class: "admin-link-chip" %>
           <% end %>
-          <%= link_to "Regia", admin_session_path(s), class: "admin-link-chip admin-link-chip--regia" %>
+          <%= link_to t("admin.sessions.index.regia"), admin_session_path(s), class: "admin-link-chip admin-link-chip--regia" %>
         </td>
-        <td><%= link_to "Dettaglio", admin_session_path(s) %></td>
+        <td><%= link_to t("admin.sessions.index.detail"), admin_session_path(s) %></td>
       </tr>
     <% end %>
   </tbody>