update email template

app/Services/OrderService.php

@@ -139,14 +139,16 @@ class OrderService
 
         [$productItems, $relIdData, $total] = $this->buildProductItems($data);
 
-        $orderTotal = (int) ($total + ($total * (10 / 100)));
+        // Giá niêm yết đã bao gồm thuế (khớp với client-facing OrderService::create()) —
+        // không cộng thêm thuế lên trên ở đây.
+        $orderTotal = (int) $total;
 
         $invoiceData = [
             'invoice_number' => Helper::generateUniqueCode(),
             'due_date'   => Carbon::today()->addDays(7)->toDateString(),
             'paid_at'    => $effectiveInvoiceStatus === InvoiceStatus::PAID->value ? Carbon::now() : null,
             'sub_total'  => $total,
-            'tax'        => $total * (10 / 100),
+            'tax'        => 0,
             'total'      => $orderTotal,
             'payment_method' => $paymentRecord?->id,
             'customer_id' => $data['customer_id'],
@@ -163,6 +165,9 @@ class OrderService
             'payment_proof'  => $data['payment_proof'] ?? null,
             'user_id'      => Auth::guard('admin')->id(),
             'status'       => $effectiveOrderStatus,
+            // Order.paid_at mirrors invoice.paid_at — set together, same rule as
+            // InvoicePaymentService::activateOrder()/activateRenewal().
+            'paid_at'      => $invoiceData['paid_at'],
             'client_ip'    => request()->getClientIp(),
         ];