fix(user-center): complete certification and order flows

Fix modal scroll ownership and certification modal styling, store evidence as Media Library attachments, reconcile missed provider callbacks, validate currencies, and complete digital fulfillment only after durable entitlement delivery.

src/AKSRT/Forum/PlateFollowPay.php

@@ -510,8 +510,12 @@ class PlateFollowPay {
             }
         }
 
+        $fulfilled = $user_id <= 0;
         if ($user_id > 0) {
             $this->mark_followed($user_id, $plate_id);
+            $fulfilled = class_exists('AKSRT\\Forum\\Forum')
+                ? Forum::get_instance()->is_user_following_plate($user_id, $plate_id)
+                : in_array($plate_id, array_map('intval', (array) get_user_meta($user_id, 'aksrt_follow_plate', true)), true);
         } elseif (function_exists('aksrt_set_guest_pay_cookies')) {
             if (class_exists('\AKSRT\Payment\OrderRepository')) {
                 $full = \AKSRT\Payment\OrderRepository::get_instance()->get($order_number);
@@ -522,6 +526,13 @@ class PlateFollowPay {
             aksrt_set_guest_pay_cookies($paid_order);
         }
         $this->finalize_plate_order_side_effects($order_number, $paid_order);
+        if ($fulfilled && class_exists('\AKSRT\Payment\OrderRepository')) {
+            \AKSRT\Payment\OrderRepository::get_instance()->update_status(
+                $order_number,
+                \AKSRT\Payment\Order::STATUS_COMPLETED,
+                ['note' => __('付费关注权益已发放。', 'aksrt')]
+            );
+        }
     }
 
     /**