feat(widgets): pricing/FAQ/stats + forum topic list and bbs sidebars

Add zibll produck widgets (pricing plans, FAQ, stats), forum topic
lists, register bbs_* sidebar zones, and wire plate/topic/home/compose
templates to render those widget areas.

templates/forum/forum-plate.php

@@ -56,8 +56,9 @@ $max_pages      = (int) ($view['pagination']['max_pages'] ?? 1);
 ?>
 
 <main id="main-content" class="site-main content-shell content-shell--stream content-shell--forum" tabindex="-1">
+    <?php if (is_active_sidebar('bbs_plate_top_fluid')) { echo '<div class="aksrt-fluid-widget aksrt-fluid-widget--forum">'; dynamic_sidebar('bbs_plate_top_fluid'); echo '</div>'; } ?>
     <div class="content-wrap container">
-        <div class="content-layout content-layout--no-sidebar">
+        <div class="content-layout content-layout--with-sidebar">
             <div class="content-layout__primary">
 
     <?php if (function_exists('aksrt_breadcrumbs')) { aksrt_breadcrumbs(); } ?>
@@ -318,6 +319,11 @@ $max_pages      = (int) ($view['pagination']['max_pages'] ?? 1);
     <?php endif; ?>
 
             </div>
+            <?php if (is_active_sidebar('bbs_plate_sidebar')) : ?>
+            <aside class="content-layout__sidebar aksrt-forum-widget-zone">
+                <?php dynamic_sidebar('bbs_plate_sidebar'); ?>
+            </aside>
+            <?php endif; ?>
         </div>
     </div>
 </main>