Salva telemetria client (OS, app, device, operatore) sulle sessioni per il debug admin.

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

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

@@ -83,6 +83,7 @@
             <th><%= t("admin.sessions.index.table.ended") %></th>
             <th><%= t("admin.sessions.index.table.duration") %></th>
             <th><%= t("admin.sessions.index.table.ingest") %></th>
+            <th><%= t("admin.sessions.index.table.client") %></th>
             <th><%= t("admin.sessions.index.table.disconnects") %></th>
             <th><%= t("admin.sessions.index.table.link") %></th>
             <th></th>
@@ -110,6 +111,7 @@
               <td class="muted"><%= s.ended_at ? admin_datetime(s.ended_at) : t("admin.common.dash") %></td>
               <td class="muted"><%= admin_session_duration_label(s) %></td>
               <td><%= render "admin/sessions/ingest_cell", session: s %></td>
+              <td class="muted admin-table-sub"><%= admin_session_client_summary(s) %></td>
               <td><%= s.disconnection_count %></td>
               <td>
                 <div class="admin-link-compact">