feat(pay): sales volume, paid order meta, pending resume, limit-over buy

Bump content sales on resource order paid; show order number/time in download
box; poll pending gateway payments; support download_limit_over_price overbuy.

inc/helpers/aksrt-domain-model.php

@@ -21,6 +21,7 @@ class AKSRT_Domain_Model {
     public const RESOURCE_MARKER_KEY         = '_aksrt_is_resource';
     public const RESOURCE_DOWNLOAD_COUNT_KEY = '_aksrt_res_download_count';
     public const RESOURCE_VIEW_COUNT_KEY     = '_aksrt_res_view_count';
+    public const RESOURCE_SALES_VOLUME_KEY   = '_aksrt_sales_volume';
     public const POST_VIEW_COUNT_KEY         = 'aksrt_post_views';
 
     public const ORDER_MIGRATED_OPTION       = 'aksrt_order_migrated_to_table';
@@ -134,6 +135,8 @@ class AKSRT_Domain_Model {
             'purchase_limit'  => 0,
             'free_preview'    => '',
             'show_sales'      => true,
+            // Zibll: free daily quota overbuy price (cash or points by pay_modo).
+            'download_limit_over_price' => 0.0,
         ];
     }
 
@@ -333,6 +336,7 @@ class AKSRT_Domain_Model {
         $meta['purchase_limit'] = max(0, (int) ($raw['purchase_limit'] ?? 0));
         $meta['free_preview']   = wp_kses_post((string) ($raw['free_preview'] ?? ''));
         $meta['show_sales']     = !isset($raw['show_sales']) || !empty($raw['show_sales']);
+        $meta['download_limit_over_price'] = max(0, (float) ($raw['download_limit_over_price'] ?? 0));
 
         return $meta;
     }