feat: Implement OAuth license activation flow

- Add LicenseConnect.tsx focused OAuth confirmation page in customer SPA
- Add /licenses/oauth/validate and /licenses/oauth/confirm API endpoints
- Update App.tsx to render license-connect outside BaseLayout (no header/footer)
- Add license_activation_method field to product settings in Admin SPA
- Create LICENSING_MODULE.md with comprehensive OAuth flow documentation
- Update API_ROUTES.md with license module endpoints

debug-variation.php

@@ -0,0 +1,69 @@
+<?php
+
+/**
+ * Debug script to check variation attribute data
+ * Access via: /wp-content/plugins/woonoow/debug-variation.php
+ * DELETE THIS FILE AFTER DEBUGGING
+ */
+
+require_once dirname(__DIR__, 3) . '/wp-load.php';
+
+header('Content-Type: application/json');
+
+$variation_id = isset($_GET['variation_id']) ? intval($_GET['variation_id']) : 515;
+$product_id = isset($_GET['product_id']) ? intval($_GET['product_id']) : 512;
+
+$result = [];
+
+// Get parent product
+$product = wc_get_product($product_id);
+if ($product && $product->is_type('variable')) {
+    $result['parent_product'] = [
+        'id' => $product->get_id(),
+        'name' => $product->get_name(),
+        'type' => $product->get_type(),
+    ];
+
+    // Get parent product attributes
+    $result['parent_attributes'] = [];
+    foreach ($product->get_attributes() as $key => $attribute) {
+        $result['parent_attributes'][$key] = [
+            'name' => $attribute->get_name(),
+            'label' => wc_attribute_label($attribute->get_name()),
+            'is_taxonomy' => $attribute->is_taxonomy(),
+            'is_variation' => $attribute->get_variation(),
+            'options' => $attribute->get_options(),
+            'sanitized_name' => sanitize_title($attribute->get_name()),
+        ];
+    }
+
+    // Get available variations from parent
+    $result['available_variations'] = $product->get_available_variations();
+}
+
+// Get variation directly
+$variation = wc_get_product($variation_id);
+if ($variation && $variation->is_type('variation')) {
+    $result['variation'] = [
+        'id' => $variation->get_id(),
+        'name' => $variation->get_name(),
+        'type' => $variation->get_type(),
+        'parent_id' => $variation->get_parent_id(),
+    ];
+
+    // Get variation attributes using WooCommerce method
+    $result['variation_attributes_wc'] = $variation->get_variation_attributes();
+
+    // Get raw post meta
+    global $wpdb;
+    $meta_rows = $wpdb->get_results($wpdb->prepare(
+        "SELECT meta_key, meta_value FROM {$wpdb->postmeta} WHERE post_id = %d AND meta_key LIKE 'attribute_%%'",
+        $variation_id
+    ));
+    $result['variation_meta_raw'] = $meta_rows;
+
+    // Get all meta for this variation
+    $result['all_meta'] = get_post_meta($variation_id);
+}
+
+echo json_encode($result, JSON_PRETTY_PRINT);