fix: WP-Admin CSS conflicts and add-to-cart redirect

- Fix CSS conflicts between WP-Admin and SPA (radio buttons, chart text)
- Add Tailwind important selector scoped to #woonoow-admin-app
- Remove overly aggressive inline SVG styles from Assets.php
- Add targeted WordPress admin CSS overrides in index.css
- Fix add-to-cart redirect to use woocommerce_add_to_cart_redirect filter
- Let WooCommerce handle cart operations natively for proper session management
- Remove duplicate tailwind.config.cjs

includes/Core/Bootstrap.php

@@ -66,5 +66,64 @@ class Bootstrap {
         MailQueue::init();
         WooEmailOverride::init();
         OrderStore::init();
+        
+        // Initialize cart for REST API requests
+        add_action('woocommerce_init', [self::class, 'init_cart_for_rest_api']);
+        
+        // Load custom variation attributes for WooCommerce admin
+        add_action('woocommerce_product_variation_object_read', [self::class, 'load_variation_attributes']);
+    }
+    
+    /**
+     * Properly initialize WooCommerce cart for REST API requests
+     * This is the recommended approach per WooCommerce core team
+     */
+    public static function init_cart_for_rest_api() {
+        // Only load cart for REST API requests
+        if (!WC()->is_rest_api_request()) {
+            return;
+        }
+        
+        // Load frontend includes (required for cart)
+        WC()->frontend_includes();
+        
+        // Load cart using WooCommerce's official method
+        if (null === WC()->cart && function_exists('wc_load_cart')) {
+            wc_load_cart();
+        }
+    }
+    
+    /**
+     * Load custom variation attributes from post meta for WooCommerce admin
+     * This ensures WooCommerce's native admin displays custom attributes correctly
+     */
+    public static function load_variation_attributes($variation) {
+        if (!$variation instanceof \WC_Product_Variation) {
+            return;
+        }
+        
+        $parent = wc_get_product($variation->get_parent_id());
+        if (!$parent) {
+            return;
+        }
+        
+        $attributes = [];
+        foreach ($parent->get_attributes() as $attr_name => $attribute) {
+            if (!$attribute->get_variation()) {
+                continue;
+            }
+            
+            // Read from post meta (stored as lowercase)
+            $meta_key = 'attribute_' . strtolower($attr_name);
+            $value = get_post_meta($variation->get_id(), $meta_key, true);
+            
+            if (!empty($value)) {
+                $attributes[strtolower($attr_name)] = $value;
+            }
+        }
+        
+        if (!empty($attributes)) {
+            $variation->set_attributes($attributes);
+        }
     }
 }