fix(orders): enforce configured expiry

Apply the configured order lifetime to all checkout flows and close unpaid orders once their expiry is reached.

src/Content/VipServicePurchase.php

@@ -369,7 +369,7 @@ trait VipServicePurchase {
             'discount_tag' => $discount_tag,
         ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
 
-        $expires_at = gmdate('Y-m-d H:i:s', time() + 30 * MINUTE_IN_SECONDS);
+        $expires_at = \AKSRT\Settings\PaymentRuntime::get_order_expiry_at();
         $order_number = \AKSRT\Payment\OrderRepository::get_instance()->create([
             'user_id' => $user_id,
             'product_type' => \AKSRT\Core\DomainModel::ORDER_PRODUCT_VIP,
@@ -750,7 +750,7 @@ trait VipServicePurchase {
             'status' => \AKSRT\Payment\Order::STATUS_PENDING,
             'payment_method' => 'points',
             'note' => is_string($note) ? $note : '',
-            'expires_at' => gmdate('Y-m-d H:i:s', time() + 30 * MINUTE_IN_SECONDS),
+            'expires_at' => \AKSRT\Settings\PaymentRuntime::get_order_expiry_at(),
         ]);
         if ($order_number === '') {
             return new \WP_Error('aksrt_order_create_failed', __('创建订单失败', 'aksrt'), ['status' => 500]);