fix(admin): replicate reference post-feature settings page 1:1

- Rewrite post_list/feature schema (PHP + JS) with the reference theme's
  field set, order, defaults and dependencies; print/PDF toggles dropped
- Move the migrated reference fields off the post-page schema (lightbox
  six switches, post like, default view/like ranges) to kill the dual path
- Map PostDisplay::get_post_page_settings() to the new keys without legacy
  fallback: imagelightbox* (pc_s/m_s checkboxes merged), post_like_s,
  post_default_mate ranges, article_nav + article_nav_mobile_nav_s
- Wire article_nav runtime: content data-nav/no-nav gate with per-post
  override, mobile drawer TOC box, imgbox_type config
- Seed random views/likes on new posts from post_default_mate ranges
- Keep the print stylesheet enqueued unconditionally (no switch); drop the
  dead print/PDF settings and needs_print requirement
- Add post-feature settings reference contract test

src/Core/ScriptsPart1b.php

@@ -173,7 +173,8 @@ trait ScriptsPart1b {
 			$is_paid_content_single
 		);
 
-		if (!empty($singular_assets['needs_print'])) {
+		// 打印样式（media=print）：内容页常驻，无设置开关（参考主题未提供该配置）。
+		if ($is_single_post || $is_single_resource || $is_static_page) {
 			$print_path = get_template_directory() . '/assets/css/frontend/print.css';
 			wp_enqueue_style(
 				'aksrt-print',