feat: khởi tạo/huỷ domain Plesk qua job, gửi mail hoá đơn qua queue, đính kèm triển khai

- ProvisionDnsDomainJob/SuspendDnsDomainJob: tạo domain admin lên Plesk, huỷ = suspend (is_created=3)
- Khách xem zone DNS được gán ở /dich-vu/domain, quản lý bản ghi A/AAAA/CNAME/TXT/MX/SRV
- send-mail hoá đơn đẩy SendInvoiceMailJob, preview + sửa nội dung, ghi mail.order_id
- invoice_attachments.type (payment_proof/deployment)
- CacheService xoá theo SCAN pattern, Redis không persistent mặc định
- Backfill transactions.public_code

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Models/DnsDomain.php

@@ -10,6 +10,11 @@ class DnsDomain extends Model
 {
     use HasFactory, LogsActivity;
 
+    public const STATUS_PENDING = 0;
+    public const STATUS_CREATED = 1;
+    public const STATUS_INACTIVE = 2;
+    public const STATUS_CANCELLED = 3;
+
     protected $table = 'dns_manager_domain';
 
     protected $fillable = [
@@ -20,6 +25,11 @@ class DnsDomain extends Model
         'registrar_id',
     ];
 
+    public function scopeNotCancelled($query)
+    {
+        return $query->where('is_created', '!=', self::STATUS_CANCELLED);
+    }
+
     public function customer()
     {
         return $this->belongsToMany(Customer::class, 'dns_domain_user', 'domain_id', 'user_id')->withTimestamps();