feat: implement WooCommerce storefront foundation

shop/xshop-theme/woocommerce/content-product.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ * WooCommerce content-product override — minimal, delegates to XShop product-card.
+ *
+ * Why override: Woo's default markup (li.product) is not grid/token aligned. This file
+ * keeps Woo loop logic (wc_product_class, hooks) but renders XShop card via
+ * template-parts/components/product-card. Keeps hooks for extensions.
+ *
+ * WC version tested: 11.1.0
+ * Template version: 3.6.0 (Woo)
+ *
+ * @see https://github.com/woocommerce/woocommerce/blob/trunk/plugins/woocommerce/templates/content-product.php
+ */
+
+defined('ABSPATH') || exit;
+
+global $product;
+
+if (empty($product) || !$product instanceof WC_Product) {
+    return;
+}
+?>
+<li <?php wc_product_class('xshop-products__item', $product); ?>>
+  <?php get_template_part('template-parts/components/product-card', null, ['product' => $product, 'show_hooks' => false]); ?>
+</li>