Backup antes de optimizar Bootstrap Icons (subset)

Estado actual:
- Bootstrap Icons completo: 211 KB (2050 iconos)
- Solo usamos 105 iconos (5.1%)

Próximo paso: crear subset de iconos para ahorrar ~199 KB

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Admin/Infrastructure/Ui/AdminDashboardRenderer.php

@@ -111,6 +111,11 @@ final class AdminDashboardRenderer implements DashboardRendererInterface
                 'label' => 'Theme Settings',
                 'icon' => 'bi-gear',
             ],
+            'adsense-placement' => [
+                'id' => 'adsense-placement',
+                'label' => 'AdSense',
+                'icon' => 'bi-megaphone',
+            ],
         ];
     }