feat(comments): full 1:1 zibll comment kernel for posts, forum, shop

Extract shared comment helpers (content/item/form/geo/actions), port GIF
[g=] smilies + FixedInput/moveForm UX, wire close_comments/city/quick
settings, REST comment get, and align product review chrome with zibll.

inc/core-hooks/part-1.php

@@ -20,6 +20,12 @@ defined('ABSPATH') || exit;
 // ============================================================
 
 add_filter('comments_open', function ($open, $post_id) {
+    if (class_exists('\AKSRT\Settings\Settings')) {
+        $display = \AKSRT\Settings\Settings::get_comment_display_settings();
+        if (!empty($display['close_comments'])) {
+            return false;
+        }
+    }
     if (!get_option('aksrt_comment_enabled', true)) {
         return false;
     }