opt.

lib/core/channel/bg_run.dart

@@ -1,9 +1,7 @@
 import 'package:flutter/services.dart';
 import 'package:toolbox/data/res/misc.dart';
 
-class BgRunMC {
-  const BgRunMC._();
-
+abstract final class BgRunMC {
   static const _channel = MethodChannel('${Miscs.pkgName}/app_retain');
 
   static void moveToBg() {

lib/core/channel/home_widget.dart

@@ -1,9 +1,7 @@
 import 'package:flutter/services.dart';
 import 'package:toolbox/data/res/misc.dart';
 
-class HomeWidgetMC {
-  const HomeWidgetMC._();
-
+abstract final class HomeWidgetMC {
   static const _channel = MethodChannel('${Miscs.pkgName}/home_widget');
 
   static void update() {

lib/core/persistant_store.dart

@@ -5,9 +5,7 @@ import 'package:flutter/foundation.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:toolbox/data/res/path.dart';
 
-// class SecureStore {
-//   SecureStore._();
-
+// abstract final class SecureStore {
 //   static const _secureStorage = FlutterSecureStorage();
 
 //   static HiveAesCipher? _cipher;

lib/core/utils/icloud.dart

@@ -25,11 +25,9 @@ class SyncResult<T, E> {
   }
 }
 
-class ICloud {
+abstract final class ICloud {
   static const _containerId = 'iCloud.tech.lolli.serverbox';
 
-  const ICloud._();
-
   /// Upload file to iCloud
   ///
   /// - [relativePath] is the path relative to [docDir],

lib/core/utils/platform/auth.dart

@@ -5,9 +5,7 @@ import 'package:local_auth/local_auth.dart';
 import 'package:toolbox/core/utils/platform/base.dart';
 import 'package:local_auth/error_codes.dart' as errs;
 
-class BioAuth {
-  const BioAuth._();
-
+abstract final class BioAuth {
   static final _auth = LocalAuthentication();
 
   static bool get isPlatformSupported => isAndroid || isIOS || isWindows;

lib/core/utils/share.dart

@@ -5,9 +5,7 @@ import 'package:share_plus/share_plus.dart';
 import 'package:toolbox/core/extension/context/locale.dart';
 import 'package:toolbox/data/res/provider.dart';
 
-class Shares {
-  const Shares._();
-
+abstract final class Shares {
   static Future<bool> files(List<String> filePaths) async {
     for (final filePath in filePaths) {
       if (!await File(filePath).exists()) {