feat: implement header/footer visibility controls for checkout and thankyou pages

- Created LayoutWrapper component to conditionally render header/footer based on route
- Created MinimalHeader component (logo only)
- Created MinimalFooter component (trust badges + policy links)
- Created usePageVisibility hook to get visibility settings per page
- Wrapped ClassicLayout with LayoutWrapper for conditional rendering
- Header/footer visibility now controlled directly in React SPA
- Settings: show/minimal/hide for both header and footer
- Background color support for checkout and thankyou pages

includes/Core/Notifications/EventRegistry.php

@@ -43,6 +43,26 @@ class EventRegistry {
             'wc_email' => 'customer_new_account',
             'enabled' => true,
         ],
+        
+        // ===== NEWSLETTER EVENTS =====
+        'newsletter_welcome' => [
+            'id' => 'newsletter_welcome',
+            'label' => __('Newsletter Welcome', 'woonoow'),
+            'description' => __('Welcome email sent when someone subscribes to newsletter', 'woonoow'),
+            'category' => 'marketing',
+            'recipient_type' => 'customer',
+            'wc_email' => '',
+            'enabled' => true,
+        ],
+        'newsletter_subscribed_admin' => [
+            'id' => 'newsletter_subscribed_admin',
+            'label' => __('New Newsletter Subscriber', 'woonoow'),
+            'description' => __('Admin notification when someone subscribes to newsletter', 'woonoow'),
+            'category' => 'marketing',
+            'recipient_type' => 'staff',
+            'wc_email' => '',
+            'enabled' => true,
+        ],
 
         // ===== ORDER INITIATION =====
         'order_placed' => [