Phase 2: Implement Domain & Mailbox persistence, Analytics, and fix pagination issues

tests/Feature/DomainFeatureTest.php

@@ -0,0 +1,11 @@
+<?php
+
+use App\Models\Domain;
+
+test('domain hash is generated in feature test', function () {
+    $domain = Domain::factory()->create([
+        'name' => 'feature-test-'.uniqid().'.com',
+    ]);
+
+    expect($domain->domain_hash)->not->toBeNull();
+});