- Added a new `prefs_async.dart` file to encapsulate the usage of `SharedPreferencesAsync`.
- Updated `ScanController`, `StorageService`, and `ScannerScreen` to utilize the new async preferences methods, enhancing performance and code clarity.
- Modified `devtools_options.yaml` to enable the `shared_preferences` extension.
- Refactored the `FlashOnUpdateWidget` to improve the outline animation and added a customizable border radius.
- Adjusted the favorite services loading mechanism in `PeripheralDetailPage` to be asynchronous, ensuring better state management.