feat: add domain registration form and email notifications

- Create a new Blade view for domain registration (`registrant-tochuc.blade.php`) to capture organization and manager details.
- Implement email templates for new domain orders for both admin (`domain-order-new.blade.php`) and customers (`domain-order-received.blade.php`).
- Add CSV exports for client and domain data.
- Introduce tests for customer mass assignment, password reset, login throttling, and permission gating.
- Ensure service renewals use current pricing and validate ownership for virtual machines.
- Validate mass assignment behavior in service model.

tests/Feature/Api/Admin/InvoiceTestRouteRemovedTest.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature\Api\Admin;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class InvoiceTestRouteRemovedTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_unauthenticated_invoice_test_routes_no_longer_exist(): void
+    {
+        $this->getJson('/api/v1/invoice-test/INV-000001/preview-pdf')->assertStatus(404);
+        $this->postJson('/api/v1/invoice-test/INV-000001/send-email')->assertStatus(404);
+    }
+}