feat(auth): complete registration anti-spam and quota hardening

tests/Feature/Auth/RegistrationTest.php

@@ -1,7 +1,7 @@
 <?php
 
-use App\Mail\RegistrationVerificationMail;
-use Illuminate\Support\Facades\Mail;
+use App\Jobs\SendVerificationEmailJob;
+use Illuminate\Support\Facades\Queue;
 
 test('registration screen can be rendered', function () {
     $response = $this->get('/register');
@@ -14,7 +14,7 @@ test('registration screen can be rendered', function () {
 });
 
 test('new users can register', function () {
-    Mail::fake();
+    Queue::fake();
 
     $response = $this->post('/register', [
         'email' => 'test@example.com',
@@ -33,5 +33,5 @@ test('new users can register', function () {
         'user_id' => (int) \App\Models\User::query()->where('email', 'test@example.com')->value('id'),
     ]);
 
-    Mail::assertQueued(RegistrationVerificationMail::class);
+    Queue::assertPushed(SendVerificationEmailJob::class);
 });