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/Http/Resources/Api/Admin/AdminUserResource.php

@@ -13,9 +13,12 @@ class AdminUserResource extends JsonResource
             'id'        => $this->id,
             'username'  => $this->username,
             'email'     => $this->email,
-            'firstname' => $this->firstname,
-            'lastname'  => $this->lastname,
-            'roles'     => $this->getRoleNames(),
+            'firstname'  => $this->firstname,
+            'lastname'   => $this->lastname,
+            'phone'      => $this->phone,
+            'department' => $this->department,
+            'start_date' => $this->start_date?->toDateString(),
+            'roles'      => $this->getRoleNames(),
         ];
     }
 }