feat(forum,admin): plate follow-pay MVP, sales column, order type tabs

Wire paid plate follow (admin meta + points/balance purchase + AJAX),
re-check plate gate on topics, post list sales column, and order type
subtabs; update gap matrix and admin IA map.

inc/classes/class-aksrt-post-meta-box.php

@@ -456,6 +456,7 @@ class AKSRT_Post_Meta_Box {
     public function add_columns(array $columns): array {
         $columns['aksrt_views'] = __('阅读量', 'aksrt');
         $columns['aksrt_likes'] = __('点赞数', 'aksrt');
+        $columns['aksrt_sales'] = __('销售数据', 'aksrt');
         return $columns;
     }
 
@@ -473,9 +474,67 @@ class AKSRT_Post_Meta_Box {
             $toc = esc_attr($meta['show_toc'] ?? '');
             $mh = (int) ($meta['maxheight'] ?? 0);
             echo '<span class="aksrt-col-data" data-views="' . (int) ($meta['views'] ?? 0) . '" data-likes="' . $likes . '" data-layout="' . $layout . '" data-toc="' . $toc . '" data-maxheight="' . $mh . '">' . esc_html($likes > 0 ? (string) $likes : '—') . '</span>';
+        } elseif ($column === 'aksrt_sales') {
+            $this->render_sales_column($post_id);
         }
     }
 
+    /**
+     * Content-pay sales summary for posts list (zibll 销售数据 column parity).
+     */
+    private function render_sales_column(int $post_id): void {
+        if (!function_exists('aksrt_get_pay_meta') || !class_exists('AKSRT_Domain_Model')) {
+            echo '—';
+            return;
+        }
+        $pay = aksrt_get_pay_meta($post_id);
+        $pay_type = AKSRT_Domain_Model::normalize_pay_type((string) ($pay['pay_type'] ?? AKSRT_Domain_Model::PAY_TYPE_NO));
+        if ($pay_type === AKSRT_Domain_Model::PAY_TYPE_NO) {
+            echo '<span class="description">' . esc_html__('免费', 'aksrt') . '</span>';
+            return;
+        }
+        $labels = AKSRT_Domain_Model::pay_type_labels();
+        $type_label = $labels[$pay_type] ?? $pay_type;
+        $modo = (($pay['pay_modo'] ?? '0') === 'points') ? 'points' : '0';
+        if ($modo === 'points') {
+            $price_text = sprintf(__('%d 积分', 'aksrt'), (int) ceil((float) ($pay['points_price'] ?? $pay['price'] ?? 0)));
+        } else {
+            $price_text = '¥' . number_format((float) ($pay['price'] ?? 0), 2);
+        }
+        $meta_sales = (int) get_post_meta($post_id, AKSRT_Domain_Model::RESOURCE_SALES_VOLUME_KEY, true);
+        $db_sales = 0;
+        $revenue  = 0.0;
+        if (class_exists('AKSRT_Order_Repository')) {
+            $map = AKSRT_Order_Repository::get_instance()->get_content_sales_map(
+                [$post_id],
+                AKSRT_Domain_Model::ORDER_PRODUCT_RESOURCE
+            );
+            if (isset($map[$post_id])) {
+                $db_sales = (int) ($map[$post_id]['sales_count'] ?? 0);
+                $revenue  = (float) ($map[$post_id]['revenue'] ?? 0);
+            }
+        }
+        $orders_url = admin_url('admin.php?page=aksrt_orders&product_type=resource&product_id=' . $post_id);
+        $products_url = admin_url('admin.php?page=aksrt_pay_products&s=' . $post_id);
+
+        echo '<div style="font-size:12px;line-height:1.5;">';
+        echo '<strong style="color:#0c9cc8;">' . esc_html((string) $type_label) . '</strong>';
+        echo '<br>' . esc_html($price_text);
+        echo '<br>' . esc_html(sprintf(__('Meta销量 %d', 'aksrt'), max(0, $meta_sales)));
+        if ($db_sales > 0) {
+            printf(
+                '<br><a href="%s" title="%s">%s</a>',
+                esc_url($orders_url),
+                esc_attr__('查看销售明细', 'aksrt'),
+                esc_html(sprintf(__('真实销量 %d · ¥%s', 'aksrt'), $db_sales, number_format($revenue, 2)))
+            );
+        } else {
+            echo '<br><span class="description">' . esc_html__('暂无订单', 'aksrt') . '</span>';
+        }
+        echo '<br><a href="' . esc_url($products_url) . '">' . esc_html__('付费文章', 'aksrt') . '</a>';
+        echo '</div>';
+    }
+
     /**
      * §3.8 Render quick edit and bulk edit fields.
      */