Add WooCommerce feature compatibility declarations

Declare compatibility with:
- HPOS (High-Performance Order Storage / custom_order_tables)
- Cart/Checkout blocks

This fixes the WooCommerce admin warning about incompatible plugins.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

wc-licensed-product.php

@@ -92,6 +92,25 @@ function wc_licensed_product_init(): void
 // Hook into plugins_loaded to ensure WooCommerce is loaded first
 add_action('plugins_loaded', __NAMESPACE__ . '\\wc_licensed_product_init');
 
+// Declare WooCommerce feature compatibility
+add_action('before_woocommerce_init', function (): void {
+    if (class_exists(\Automattic\WooCommerce\Utilities\FeaturesUtil::class)) {
+        // Declare HPOS compatibility
+        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility(
+            'custom_order_tables',
+            __FILE__,
+            true
+        );
+
+        // Declare cart/checkout blocks compatibility
+        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility(
+            'cart_checkout_blocks',
+            __FILE__,
+            true
+        );
+    }
+});
+
 // Register activation hook
 register_activation_hook(__FILE__, function (): void {
     if (!wc_licensed_product_is_woocommerce_active()) {