Refactor to PSR-4: rename files and switch namespace

- Rename files to PascalCase: Product_Type → ProductType, Cart_Handler →
  CartHandler, Product_Selector → ProductSelector, Stock_Manager →
  StockManager, Admin/Product_Data → Admin/ProductData
- Switch namespace from WC_Composable_Product to Magdev\WcComposableProduct
- Update all cross-references in PHP, CSS, JS, translations, and docs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

includes/Admin/ProductData.php

@@ -2,17 +2,17 @@
 /**
  * Product Data Tab
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product\Admin;
+namespace Magdev\WcComposableProduct\Admin;
 
 defined('ABSPATH') || exit;
 
 /**
  * Product Data Tab Class
  */
-class Product_Data {
+class ProductData {
     /**
      * Constructor
      */

includes/Admin/Settings.php

@@ -2,10 +2,10 @@
 /**
  * Admin Settings
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product\Admin;
+namespace Magdev\WcComposableProduct\Admin;
 
 defined('ABSPATH') || exit;
 

includes/CartHandler.php

@@ -2,10 +2,10 @@
 /**
  * Cart Handler
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product;
+namespace Magdev\WcComposableProduct;
 
 defined('ABSPATH') || exit;
 
@@ -14,11 +14,11 @@ defined('ABSPATH') || exit;
  *
  * Handles adding composable products to cart and calculating prices
  */
-class Cart_Handler {
+class CartHandler {
     /**
      * Stock manager instance
      *
-     * @var Stock_Manager
+     * @var StockManager
      */
     private $stock_manager;
 
@@ -26,7 +26,7 @@ class Cart_Handler {
      * Constructor
      */
     public function __construct() {
-        $this->stock_manager = new Stock_Manager();
+        $this->stock_manager = new StockManager();
 
         add_filter('woocommerce_add_to_cart_validation', [$this, 'validate_add_to_cart'], 10, 3);
         add_filter('woocommerce_add_cart_item_data', [$this, 'add_cart_item_data'], 10, 2);
@@ -59,7 +59,7 @@ class Cart_Handler {
         global $product;
 
         if ($product && $product->get_type() === 'composable') {
-            Product_Selector::render($product);
+            ProductSelector::render($product);
         }
     }
 

includes/Plugin.php

@@ -2,10 +2,10 @@
 /**
  * Main Plugin Class
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product;
+namespace Magdev\WcComposableProduct;
 
 defined('ABSPATH') || exit;
 
@@ -98,15 +98,15 @@ class Plugin {
     private function includes() {
         // Note: Settings.php is NOT included here because it extends WC_Settings_Page
         // which isn't loaded until later. It's included in add_settings_page() instead.
-        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Admin/Product_Data.php';
-        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Product_Type.php';
-        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Stock_Manager.php';
-        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Cart_Handler.php';
-        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Product_Selector.php';
+        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Admin/ProductData.php';
+        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/ProductType.php';
+        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/StockManager.php';
+        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/CartHandler.php';
+        require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/ProductSelector.php';
 
         // Initialize components
-        new Admin\Product_Data();
-        new Cart_Handler();
+        new Admin\ProductData();
+        new CartHandler();
     }
 
     /**
@@ -129,7 +129,7 @@ class Plugin {
      */
     public function product_class($classname, $product_type) {
         if ($product_type === 'composable') {
-            $classname = 'WC_Composable_Product\Product_Type';
+            $classname = 'Magdev\WcComposableProduct\ProductType';
         }
         return $classname;
     }

includes/ProductSelector.php

@@ -2,10 +2,10 @@
 /**
  * Product Selector
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product;
+namespace Magdev\WcComposableProduct;
 
 defined('ABSPATH') || exit;
 
@@ -14,11 +14,11 @@ defined('ABSPATH') || exit;
  *
  * Handles rendering the product selection interface
  */
-class Product_Selector {
+class ProductSelector {
     /**
      * Render product selector
      *
-     * @param Product_Type $product Composable product
+     * @param ProductType $product Composable product
      */
     public static function render($product) {
         if (!$product || $product->get_type() !== 'composable') {
@@ -34,7 +34,7 @@ class Product_Selector {
         $show_total = get_option('wc_composable_show_total', 'yes') === 'yes';
 
         // Get stock manager for stock information
-        $stock_manager = new Stock_Manager();
+        $stock_manager = new StockManager();
 
         // Prepare product data for template
         $products_data = [];

includes/ProductType.php

@@ -2,17 +2,17 @@
 /**
  * Composable Product Type
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product;
+namespace Magdev\WcComposableProduct;
 
 defined('ABSPATH') || exit;
 
 /**
  * Composable Product Type Class
  */
-class Product_Type extends \WC_Product {
+class ProductType extends \WC_Product {
     /**
      * Product type
      *

includes/StockManager.php

@@ -2,10 +2,10 @@
 /**
  * Stock Manager
  *
- * @package WC_Composable_Product
+ * @package Magdev\WcComposableProduct
  */
 
-namespace WC_Composable_Product;
+namespace Magdev\WcComposableProduct;
 
 defined('ABSPATH') || exit;
 
@@ -14,7 +14,7 @@ defined('ABSPATH') || exit;
  *
  * Handles stock management for composable products
  */
-class Stock_Manager {
+class StockManager {
 	/**
 	 * Constructor
 	 */