- Updated the `IntegrationService` to perform connection tests using only the API key, removing reliance on username and app password.
- Simplified health check logic and improved error messaging for better clarity.
- Added functionality to revoke API keys in the `WordPressIntegrationForm` component.
- Enhanced site settings page with a site selector and improved integration status display.
- Cleaned up unused code and improved overall structure for better maintainability.
