feat: Add Help to main navigation (no submenu bar)

- Added Help item to NavigationRegistry::get_base_tree
- Empty children array means no submenu bar displayed
- Incremented NAV_VERSION to 1.0.9 to trigger cache rebuild
- Help icon: help-circle

includes/Compat/NavigationRegistry.php

@@ -13,7 +13,7 @@ if ( ! defined('ABSPATH') ) exit;
  */
 class NavigationRegistry {
     const NAV_OPTION = 'wnw_nav_tree';
-    const NAV_VERSION = '1.0.8'; // Added Modules to Settings menu
+    const NAV_VERSION = '1.0.9'; // Added Help menu
     
     /**
      * Initialize hooks
@@ -186,6 +186,13 @@ class NavigationRegistry {
                 'icon'     => 'settings',
                 'children' => self::get_settings_children(),
             ],
+            [
+                'key'      => 'help',
+                'label'    => __('Help', 'woonoow'),
+                'path'     => '/help',
+                'icon'     => 'help-circle',
+                'children' => [], // Empty array = no submenu bar
+            ],
         ];
         
         return $tree;