feat: harden auth flows and server mobile navigation

Add normalized email identity rate limiting for registration and forgot-password requests, and refresh Sentinel status from restart broadcasts.

Rework server sidebars and navbar for mobile menus and active status visibility.

app/Actions/Fortify/CreateNewUser.php

@@ -4,7 +4,9 @@ namespace App\Actions\Fortify;
 
 use App\Models\Team;
 use App\Models\User;
+use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Facades\RateLimiter;
 use Illuminate\Support\Facades\Validator;
 use Illuminate\Validation\Rule;
 use Illuminate\Validation\Rules\Password;
@@ -12,6 +14,16 @@ use Laravel\Fortify\Contracts\CreatesNewUsers;
 
 class CreateNewUser implements CreatesNewUsers
 {
+    private const REGISTRATION_IP_MAX_ATTEMPTS = 3;
+
+    private const REGISTRATION_IP_DECAY_SECONDS = 600;
+
+    private const REGISTRATION_EMAIL_IDENTITY_MAX_ATTEMPTS = 3;
+
+    private const REGISTRATION_EMAIL_IDENTITY_DECAY_SECONDS = 3600;
+
+    public function __construct(private readonly Request $request) {}
+
     /**
      * Validate and create a newly registered user.
      *
@@ -23,6 +35,9 @@ class CreateNewUser implements CreatesNewUsers
         if (! $settings->is_registration_enabled) {
             abort(403);
         }
+
+        $this->ensureRegistrationIsNotRateLimited($input);
+
         Validator::make($input, [
             'name' => ['required', 'string', 'max:255'],
             'email' => [
@@ -72,4 +87,42 @@ class CreateNewUser implements CreatesNewUsers
 
         return $user;
     }
+
+    /**
+     * @param  array<string, string>  $input
+     */
+    private function ensureRegistrationIsNotRateLimited(array $input): void
+    {
+        $keys = [
+            [
+                'key' => 'registration:ip:'.sha1($this->realIp()),
+                'max' => self::REGISTRATION_IP_MAX_ATTEMPTS,
+                'decay' => self::REGISTRATION_IP_DECAY_SECONDS,
+            ],
+        ];
+
+        $emailIdentity = normalize_email_identity($input['email'] ?? null);
+        if ($emailIdentity !== null) {
+            $keys[] = [
+                'key' => 'registration:email-identity:'.sha1($emailIdentity),
+                'max' => self::REGISTRATION_EMAIL_IDENTITY_MAX_ATTEMPTS,
+                'decay' => self::REGISTRATION_EMAIL_IDENTITY_DECAY_SECONDS,
+            ];
+        }
+
+        foreach ($keys as $limit) {
+            if (RateLimiter::tooManyAttempts($limit['key'], $limit['max'])) {
+                abort(429, 'Too many registration attempts. Please try again later.');
+            }
+        }
+
+        foreach ($keys as $limit) {
+            RateLimiter::hit($limit['key'], $limit['decay']);
+        }
+    }
+
+    private function realIp(): string
+    {
+        return $this->request->server('REMOTE_ADDR') ?? $this->request->ip();
+    }
 }