fix(sync): ignore AddOns subfolders to make sure we do not overwrite user's addons

lib/features/launcher/application/client_sync_use_case.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:injectable/injectable.dart';
+import 'package:moonwell_launcher/config.dart';
 import 'package:moonwell_launcher/core/use_case.dart';
 import 'package:moonwell_launcher/features/downloader/domain/entities/download_exceptions.dart';
 import 'package:moonwell_launcher/features/downloader/domain/entities/download_progress.dart';
@@ -95,6 +96,7 @@ class ClientSyncUseCase
       final localSnapshot = await _installationService.scanInstallation(
         input.request.installationDir,
         isCancelled: input.isCancelled,
+        manifest: manifest,
         onProgress: (progress, currentPath, processedFiles, totalFiles) {
           _emit(
             controller,
@@ -185,6 +187,7 @@ class ClientSyncUseCase
       final verifiedSnapshot = await _installationService.scanInstallation(
         input.request.installationDir,
         isCancelled: input.isCancelled,
+        manifest: manifest,
         onProgress: (progress, currentPath, processedFiles, totalFiles) {
           _emit(
             controller,
@@ -279,7 +282,13 @@ class ClientSyncUseCase
     final remoteFiles = manifest.filesByPath;
 
     return snapshot.files
-        .where((localFile) => !remoteFiles.containsKey(localFile.path))
+        .where((localFile) {
+          if (remoteFiles.containsKey(localFile.path)) {
+            return false;
+          }
+
+          return !_isIgnored(localFile.path);
+        })
         .map((file) => file.path)
         .toList();
   }
@@ -454,14 +463,21 @@ class ClientSyncUseCase
 
     final mismatchedFiles = manifest.files.where((remoteFile) {
       final localFile = localFilesByPath[remoteFile.path];
-      return localFile == null ||
+      final isMismatched =
+          localFile == null ||
           localFile.sha256 != remoteFile.sha256 ||
           localFile.size != remoteFile.size;
+
+      return isMismatched;
     }).toList();
 
-    final extraFiles = snapshot.files
-        .where((localFile) => !manifest.filesByPath.containsKey(localFile.path))
-        .toList();
+    final extraFiles = snapshot.files.where((localFile) {
+      if (manifest.filesByPath.containsKey(localFile.path)) {
+        return false;
+      }
+
+      return !_isIgnored(localFile.path);
+    }).toList();
 
     if (snapshot.buildHash != remoteBuildHash ||
         mismatchedFiles.isNotEmpty ||
@@ -492,6 +508,15 @@ class ClientSyncUseCase
     }
   }
 
+  /// Файлы, которые не будут удалены во время проверки файлов. Например, пользовательские
+  /// аддоны, скриншоты и т.д.
+  bool _isIgnored(String filePath) {
+    final normalizedPath = filePath.replaceAll('\\', '/').toLowerCase();
+    return Config.ignoredVerificationDirectories.any(
+      (pattern) => normalizedPath.contains(pattern.toLowerCase()),
+    );
+  }
+
   Future<void> _verifyDownloadedFile({
     required String installationDir,
     required ClientManifestFile file,