fix(admin): replicate reference comment settings page 1:1

- Rewrite post_list/comment schema (PHP + JS) with the reference theme's
  field set, order, defaults and dependencies; smilie, comment location
  and quick-reply fields excluded
- Map PostDisplay::get_comment_display_settings() to the new keys without
  legacy fallback: close_comments, comment_paginate_type (ajax_lists),
  user_edit_comment master switch, WP comment_order for sorting
- Wire comment_box_hide visibility gate (signin / vip / vip_2 / auth)
- Drop dead comment settings (order/per_page/depth/avatar/hot threshold/
  empty text/city), the dead post_close_comments field, and city readers
  now fully owned by the IP-geo extension
- Add comment settings reference contract test

inc/helpers/aksrt-identity.php

@@ -23,6 +23,26 @@ if (!function_exists('aksrt_get_user_identity_signals')) {
 	}
 }
 
+if (!function_exists('aksrt_current_user_is_verified')) {
+	/**
+	 * Whether the current user carries a verification (认证) signal.
+	 *
+	 * @return bool
+	 */
+	function aksrt_current_user_is_verified(): bool {
+		$user_id = get_current_user_id();
+		if ($user_id <= 0 || !function_exists('aksrt_get_user_identity_signals')) {
+			return false;
+		}
+		foreach (aksrt_get_user_identity_signals($user_id) as $signal) {
+			if ((string) ($signal['type'] ?? '') === 'verify') {
+				return true;
+			}
+		}
+		return false;
+	}
+}
+
 if (!function_exists('aksrt_render_user_identity_chips')) {
 	/**
 	 * Render compact identity chips (verify / level / badges).
@@ -537,7 +557,8 @@ if (!function_exists('aksrt_get_worn_medal_icon')) {
 
 if (!function_exists('aksrt_is_blog_comment_hot')) {
 	/**
-	 * "神评" for ordinary post comments when likes cross threshold.
+	 * "神评" for ordinary post comments when likes cross the fixed threshold
+	 * (参考主题固定 10 赞，主题不再提供该阈值配置).
 	 */
 	function aksrt_is_blog_comment_hot($comment): bool {
 		$comment_id = $comment instanceof WP_Comment ? (int) $comment->comment_ID : (int) $comment;
@@ -548,16 +569,6 @@ if (!function_exists('aksrt_is_blog_comment_hot')) {
 			return true;
 		}
 		$threshold = 10;
-		if (class_exists('\AKSRT\Settings\Settings') && method_exists('\AKSRT\Settings\Settings', 'get_comment_display_settings')) {
-			$display = \AKSRT\Settings\Settings::get_comment_display_settings();
-			if (isset($display['hot_threshold'])) {
-				$threshold = max(1, (int) $display['hot_threshold']);
-			}
-		}
-		$all = class_exists('\AKSRT\Settings\Settings') ? \AKSRT\Settings\Settings::get_all() : [];
-		if (isset($all['comment_hot_threshold'])) {
-			$threshold = max(1, (int) $all['comment_hot_threshold']);
-		}
 		$likes = function_exists('aksrt_get_comment_likes') ? aksrt_get_comment_likes($comment_id) : (int) get_comment_meta($comment_id, 'aksrt_comment_likes', true);
 		if ($likes < $threshold) {
 			return false;