Implement VM provision locking mechanism and enhance VM job handling

app/Services/Api/Order/OrderService.php

@@ -6,6 +6,7 @@ use App\Enums\Order\OrderStatus;
 use App\Helpers\OrderHelper;
 use App\Jobs\Mail\Admin\AdminOrderNotificationJob;
 use App\Jobs\VirtualMachine\Create\CreateVirtualMachineJob;
+use App\Models\VmProvisionLock;
 use App\Models\Addon;
 use App\Models\Log as CustomerActivityLog;
 use App\Models\Order;
@@ -224,6 +225,14 @@ class OrderService
     private function dispatchVmJob(Order $order, OrderItem $item, Service $service, $customer): void
     {
         try {
+            if (VmProvisionLock::isRunning($customer->id)) {
+                Log::warning('dispatchVmJob: blocked — customer already has a running VM provision', [
+                    'customer_id'   => $customer->id,
+                    'order_item_id' => $item->id,
+                ]);
+                return;
+            }
+
             dispatch(new CreateVirtualMachineJob($item));
 
             Log::info('dispatchVmJob: CreateVirtualMachineJob dispatched', [