- Add new /getAccounts API for fast account retrieval without validation
- Update frontend to use fast API for initial load, showing accounts immediately
- Add '验证中' status with loading animation to indicate validation progress
- Implement background validation process that doesn't block UI
- Add Loading icon from Element Plus for visual feedback during validation
- Update status display logic to handle '验证中', '正常', and invalid states
- Improve user experience with immediate feedback and async validation