feat: VM metrics via portal-monitor integration

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/Http/Kernel.php

@@ -87,6 +87,7 @@ class Kernel extends HttpKernel
         'client.access-token' => \App\Http\Middleware\ClientAccessTokenCheck::class,
         'perm'     => \App\Http\Middleware\CheckPermission::class,
         'restrict.local' => \App\Http\Middleware\RestrictToLocalEnvironment::class,
+        'portal-monitor.service' => \App\Http\Middleware\AuthenticatePortalMonitor::class,
         'turnstile' => \App\Http\Middleware\VerifyTurnstile::class,
     ];
 }