feat(vm): hoàn tiền khi cấp VM lỗi, theo dõi job queue, uuid dịch vụ cho ticket, chuẩn hoá RAM addon

- VmProvisionException/VmProvisionRefund xử lý lỗi cấp phát VM
- QueueJobInspector + QueueMonitorController xem chi tiết job
- Thêm service uuid cho ticket, thời lượng cho activity_logs
- Migration chuẩn hoá RAM addon sang MB, trạng thái deleting cho snapshot

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

app/Services/Api/Order/OrderService.php

@@ -4,6 +4,7 @@ namespace App\Services\Api\Order;
 
 use App\Enums\Invoice\InvoiceStatus;
 use App\Enums\Order\OrderStatus;
+use App\Enums\Product\ProductTypeEnums;
 use App\Helpers\OrderHelper;
 use App\Models\Order;
 use App\Models\Product;
@@ -13,6 +14,7 @@ use App\Repositories\Api\Service\ServiceRepository;
 use App\Services\InvoicePaymentService;
 use App\Services\AdminPaymentNotifier;
 use App\Services\Coupon\CouponService;
+use App\Services\VirtualMachine\VmIpReservationService;
 use App\Support\AddonQuantityValidator;
 use Illuminate\Support\Facades\DB;
 
@@ -25,6 +27,7 @@ class OrderService
         protected InvoicePaymentService $invoicePaymentService,
         protected AdminPaymentNotifier $adminPaymentNotifier,
         protected CouponService $couponService,
+        protected VmIpReservationService $vmIpReservation,
     ) {}
 
     // =========================================================================
@@ -46,6 +49,8 @@ class OrderService
         ['product' => $product, 'base_price' => $basePrice, 'addons_meta' => $addonsMeta, 'sub_total' => $subTotal] = $this->quote($data);
         $couponCode = $data['coupon_code'] ?? null;
 
+        $this->assertInfrastructureAvailable([$product]);
+
         $expectedTotal = $couponCode
             ? $subTotal - $this->couponService->preview($couponCode, $customer, $product, $data['billing_cycle'], $subTotal)['discount']
             : $subTotal;
@@ -100,6 +105,19 @@ class OrderService
         });
     }
 
+    private function assertInfrastructureAvailable(iterable $products): void
+    {
+        $needsVm = collect($products)->contains(fn ($product) => in_array(
+            ProductTypeEnums::tryFrom($product?->category?->type ?? ''),
+            [ProductTypeEnums::VPS, ProductTypeEnums::CLOUD],
+            true
+        ));
+
+        if ($needsVm && !$this->vmIpReservation->hasFreeIp()) {
+            throw new \InvalidArgumentException('Hiện tại hạ tầng đang đầy vui lòng liên hệ quản trị viên');
+        }
+    }
+
     /**
      * Giá niêm yết (chu kỳ + addon) tính phía server; nguồn duy nhất cho create() và preview mã giảm giá.
      *
@@ -143,6 +161,8 @@ class OrderService
             throw new \InvalidArgumentException('Đơn hàng đã được thanh toán hoặc đang xử lý.');
         }
 
+        $this->assertInfrastructureAvailable($order->orderItems->map->product);
+
         $processedOrder = DB::transaction(function () use ($order, $method) {
             $customer = $order->customer;