sidebar: mostrar IP local del cliente al pie del menú

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

shared/components/sidebar.php

@@ -244,6 +244,9 @@ if (class_exists('ModuleRegistry', false)) {
             <?= htmlspecialchars($_user_name, ENT_QUOTES, 'UTF-8') ?>
         </div>
         <div class="sidebar-user-role"><?= htmlspecialchars($_role_label, ENT_QUOTES, 'UTF-8') ?></div>
+        <div style="font-size:.68rem;color:#94a3b8;margin-top:3px;letter-spacing:.02em">
+            <i class="fas fa-network-wired me-1"></i><?= htmlspecialchars(trim(explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'] ?? $_SERVER['HTTP_X_REAL_IP'] ?? $_SERVER['REMOTE_ADDR'] ?? '')[0])) ?>
+        </div>
     </div>
 
 </nav>