Zibll 主线收口：统一 single 并清退 compat 资源路径

Co-Authored-By: Claude <noreply@anthropic.com>

templates/parts/resource-download-box.php

@@ -1,8 +1,10 @@
 <?php
 /**
- * Paid Content Download Box
+ * Unified paid-content download box.
  *
- * 统一内容付费 / 下载区：普通文章为主线，resource 样式仅保留兼容外壳。
+ * Downloadable content now follows the unified single.php mainline; resource-
+ * specific visuals are treated as content variants rather than a separate page
+ * system.
  *
  * @package AKSRT
  */
@@ -23,6 +25,7 @@ if ($pay_type !== 'download' || empty($downloads)) {
 }
 
 $is_resource_context = function_exists('aksrt_is_resource_post') && aksrt_is_resource_post($post_id);
+$context_variant = $is_resource_context ? 'resource' : 'content';
 $subject_label = trim((string) ($meta['subject_label'] ?? ''));
 if ($subject_label === '') {
 	$subject_label = $is_resource_context ? __('资源', 'aksrt') : __('内容', 'aksrt');
@@ -77,7 +80,7 @@ $pay_type_badge = function_exists('aksrt_get_pay_type_badge') ? aksrt_get_pay_ty
 $currency = class_exists('AKSRT_Settings') ? AKSRT_Settings::get_currency_name() : __('积分', 'aksrt');
 ?>
 
-<section class="widget resource-download-box resource-download-box--v2<?php echo $gate_blocked ? ' is-blocked' : ''; ?><?php echo $is_resource_context ? ' resource-download-box--legacy-resource' : ' resource-download-box--content'; ?>"
+<section class="widget resource-download-box resource-download-box--v2<?php echo $gate_blocked ? ' is-blocked' : ''; ?> resource-download-box--<?php echo esc_attr($context_variant); ?>"
 	data-post-id="<?php echo esc_attr((string) $post_id); ?>"
 	data-price="<?php echo esc_attr((string) ($meta['price'] ?? 0)); ?>"
 	data-credit="<?php echo $credit_active ? '1' : '0'; ?>"