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.

app/Mail/Admin/DomainOrderNewNotification.php

@@ -2,42 +2,37 @@
 
 namespace App\Mail\Admin;
 
-use App\Models\Template;
 use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Mail\Mailable;
 use Illuminate\Mail\Mailables\Content;
 use Illuminate\Mail\Mailables\Envelope;
 use Illuminate\Queue\SerializesModels;
 
-class DomainOrderNewNotification extends Mailable
+class DomainOrderNewNotification extends Mailable implements ShouldQueue
 {
     use Queueable, SerializesModels;
 
     public function __construct(
-        protected Template $template,
         protected array $data,
     ) {}
 
     public function envelope(): Envelope
     {
         return new Envelope(
-            subject: str_replace('{\$domain_name}', $this->data['domain_name'] ?? '', $this->template->subject),
+            subject: "[ADMIN] Đơn đăng ký tên miền mới - {$this->data['domain_name']}",
         );
     }
 
     public function content(): Content
     {
-        $message = str_replace(
-            ['{\$company_name}', '{\$company_logo}', '{\$domain_name}', '{\$customer_name}', '{\$customer_email}', '{\$order_num}', '{\$order_total}', '{\$created_at}', '{\$admin_url}'],
-            [$this->data['company_name'] ?? '', $this->data['company_logo'] ?? '', $this->data['domain_name'] ?? '', $this->data['customer_name'] ?? '', $this->data['customer_email'] ?? '', $this->data['order_num'] ?? '', $this->data['order_total'] ?? '', $this->data['created_at'] ?? '', $this->data['admin_url'] ?? ''],
-            $this->template->message
+        return new Content(
+            view: 'emails.layouts.notification',
+            with: [
+                'companyName' => $this->data['company_name'] ?? config('app.name'),
+                'title'       => 'Thông báo đơn đăng ký tên miền mới',
+                'body'        => view('emails.admin.domain-order-new', $this->data)->render(),
+            ],
         );
-
-        return new Content(view: 'emails.template', with: ['template' => $message]);
-    }
-
-    public function attachments(): array
-    {
-        return [];
     }
 }