- Add three usage examples for the new [fourthwall_random] shortcode
- Include examples for basic random products, specific URLs, and different stores
- Place examples alongside existing shortcode documentation in admin panel
- Improve user experience by providing clear usage guidance
- Eliminated code duplication by creating common HTTP request function
- Added configurable SSL verification setting for development/production
- Implemented smart caching system with 1-hour cache duration
- Enhanced admin interface with cache management and better styling
- Improved error handling and user experience
- Added comprehensive documentation and troubleshooting guide
- Updated README with new features and configuration options
