feat(admin): deeper order/income filters, post pay-type, topic sales meta

Add order user/payment filters, income/rebate user_id filter, posts list
pay_type dropdown, topic virtual_sales/coupon meta, and forum unlock
facade methods used by hidecontent/payshow.

inc/core-hooks/part-1.php

@@ -334,6 +334,8 @@ function aksrt_register_forum_topic_meta() {
         '_aksrt_credits_vip1'     => ['type' => 'integer', 'default' => 0],
         '_aksrt_credits_vip2'     => ['type' => 'integer', 'default' => 0],
         '_aksrt_pay_hide_part'    => ['type' => 'integer', 'default' => 0],
+        '_aksrt_virtual_sales'    => ['type' => 'integer', 'default' => 0],
+        '_aksrt_topic_coupon_s'   => ['type' => 'integer', 'default' => 0],
         '_aksrt_visibility_roles' => ['type' => 'array',   'default' => []],
 
         // 状态工作流扩展位 (Wave4)