refactor(resource): drop aksrt_resource CPT residue, post+meta only

templates/parts/resource-related.php

@@ -2,8 +2,7 @@
 /**
  * Resource Related
  *
- * 单篇资源页底部的「相关资源」区块。
- * 取同分类下其它资源（post + _aksrt_is_resource = 1，兼容旧 aksrt_resource CPT），按下载量倒序。
+ * 单篇资源页底部「相关资源」：同分类其它资源帖（post + _aksrt_is_resource）。
  *
  * @package AKSRT
  */
@@ -11,13 +10,13 @@
 defined('ABSPATH') || exit;
 
 $current_id = get_the_ID();
-$cat_ids = wp_get_post_categories($current_id, ['fields' => 'ids']);
-if (empty($cat_ids)) return;
-
-$post_types = function_exists('aksrt_resource_post_types') ? aksrt_resource_post_types() : ['post'];
+$cat_ids    = wp_get_post_categories($current_id, ['fields' => 'ids']);
+if (empty($cat_ids)) {
+	return;
+}
 
 $args = [
-	'post_type'      => $post_types,
+	'post_type'      => 'post',
 	'posts_per_page' => 6,
 	'post__not_in'   => [$current_id],
 	'category__in'   => array_map('intval', $cat_ids),
@@ -25,17 +24,12 @@ $args = [
 	'orderby'        => 'meta_value_num',
 	'order'          => 'DESC',
 	'no_found_rows'  => true,
+	'meta_query'     => [
+		function_exists('aksrt_resource_meta_query')
+			? aksrt_resource_meta_query()
+			: ['key' => '_aksrt_is_resource', 'value' => '1', 'compare' => '='],
+	],
 ];
-if (!post_type_exists('aksrt_resource')) {
-	$args['meta_query'] = [
-		'relation' => 'AND',
-		[
-			'key'     => '_aksrt_is_resource',
-			'value'   => '1',
-			'compare' => '=',
-		],
-	];
-}
 
 $query = new WP_Query($args);
 
@@ -49,10 +43,9 @@ if (!$query->have_posts()) {
 	<header class="resource-related__header">
 		<h2 class="resource-related__title"><?php esc_html_e('相关资源', 'aksrt'); ?></h2>
 	</header>
-
-	<div class="post-grid post-grid--grid-cms resource-related__grid">
+	<div class="resource-related__grid post-grid post-grid--card">
 		<?php
-		set_query_var('aksrt_post_card_layout', 'grid-cms');
+		set_query_var('aksrt_post_card_layout', 'card');
 		while ($query->have_posts()) {
 			$query->the_post();
 			get_template_part('templates/parts/content', 'post-card');