feat(neon,neon_notes,neon_lints): enable stricter rules

Signed-off-by: Nikolas Rimikis <leptopoda@users.noreply.github.com>

packages/neon/neon/lib/src/settings/models/storage.dart

@@ -38,6 +38,8 @@ enum StorageKeys implements Storable {
 
 @internal
 final class NeonStorage {
+  const NeonStorage._();
+
   /// Shared preferences instance.
   ///
   /// Use [database] to access it.

packages/neon/neon/lib/src/utils/global.dart

@@ -3,6 +3,8 @@ import 'package:neon/src/models/push_notification.dart';
 
 @internal
 class Global {
+  const Global._();
+
   static Function(String accountID)? onPushNotificationReceived;
   static Function(PushNotification notification)? onPushNotificationClicked;
 }

packages/neon/neon/lib/src/utils/push_utils.dart

@@ -21,6 +21,8 @@ import 'package:nextcloud/nextcloud.dart';
 @internal
 @immutable
 class PushUtils {
+  const PushUtils._();
+
   static Future<RSAKeypair> loadRSAKeypair() async {
     const storage = AppStorage(StorageKeys.notifications);
     const keyDevicePrivateKey = 'device-private-key';

packages/neon/neon_notes/lib/utils/category_color.dart

@@ -1,6 +1,8 @@
 part of '../neon_notes.dart';
 
 class NotesCategoryColor {
+  const NotesCategoryColor._();
+
   static final Map<String, Color> _colors = {};
 
   static Color compute(final String category) {

packages/neon_lints/lib/dart.yaml

@@ -18,8 +18,8 @@ linter:
     avoid_annotating_with_dynamic: false
     avoid_bool_literals_in_conditional_expressions: true
     avoid_catches_without_on_clauses: false
-    avoid_catching_errors: false
-    avoid_classes_with_only_static_members: false
+    avoid_catching_errors: true
+    avoid_classes_with_only_static_members: true
     avoid_double_and_int_checks: true
     avoid_dynamic_calls: true
     avoid_empty_else: true

packages/neon_lints/lint_maker.yaml

@@ -6,8 +6,6 @@ dart:
     - avoid_annotating_with_dynamic
     - avoid_as
     - avoid_catches_without_on_clauses
-    - avoid_catching_errors
-    - avoid_classes_with_only_static_members
     - avoid_final_parameters
     - avoid_print
     - diagnostic_describe_all_properties