1. Admin Store Link - Add to WP admin bar (Menu.php) with proper option check
2. Activity Log - Fix Loading text to show correct state after data loads
3. Avatar Upload - Use correct option key woonoow_allow_custom_avatar
4. Downloadable Files - Connect to WooCommerce native:
- Add downloads array to format_product_full
- Add downloads/download_limit/download_expiry handling in update_product
- Add downloads handling in create_product
- Add Store link to admin header (visible when customer SPA is enabled)
- Add storeUrl and customerSpaEnabled to WNW_CONFIG in Assets.php and StandaloneAdmin.php
- Update window.d.ts with new WNW_CONFIG properties
- Create ActivityLog.tsx component with search, filters, and pagination
- Add /notifications/logs API endpoint to NotificationsController
- Update Notifications.tsx to link to activity log page
- Add ActivityLog route to App.tsx
