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

includes/Modules/LicensingSettings.php

@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Licensing Module Settings
  *
@@ -9,19 +10,22 @@ namespace WooNooW\Modules;
 
 if (!defined('ABSPATH')) exit;
 
-class LicensingSettings {
-    
+class LicensingSettings
+{
+
     /**
      * Initialize the settings
      */
-    public static function init() {
+    public static function init()
+    {
         add_filter('woonoow/module_settings_schema', [__CLASS__, 'register_schema']);
     }
-    
+
     /**
      * Register licensing settings schema
      */
-    public static function register_schema($schemas) {
+    public static function register_schema($schemas)
+    {
         $schemas['licensing'] = [
             'license_key_format' => [
                 'type' => 'select',
@@ -88,8 +92,24 @@ class LicensingSettings {
                 'min' => 1,
                 'max' => 30,
             ],
+            'activation_method' => [
+                'type' => 'select',
+                'label' => __('Activation Method', 'woonoow'),
+                'description' => __('How licenses are activated. OAuth requires user login on your site (anti-piracy).', 'woonoow'),
+                'options' => [
+                    'api' => __('Simple API (license key only)', 'woonoow'),
+                    'oauth' => __('Secure OAuth (requires account login)', 'woonoow'),
+                ],
+                'default' => 'api',
+            ],
+            'allow_product_override' => [
+                'type' => 'toggle',
+                'label' => __('Allow Per-Product Override', 'woonoow'),
+                'description' => __('Show activation method field on each product for individual customization', 'woonoow'),
+                'default' => false,
+            ],
         ];
-        
+
         return $schemas;
     }
 }