chore: bump version to 3.9.0+115, add new translators

- Bump app version from 3.8.8 to 3.9.0 (build 115)
- Add 4 new Crowdin translators: unkn0wn (Indonesian), lunching1272
  (Chinese Simplified), Сергей Ильченко (Russian), Girl-lass (Chinese
  Simplified)

lib/constants/app_info.dart

@@ -3,24 +3,24 @@ import 'package:flutter/foundation.dart';
 /// App version and info constants
 /// Update version here only - all other files will reference this
 class AppInfo {
-  static const String version = '3.8.8';
-  static const String buildNumber = '114';
+  static const String version = '3.9.0';
+  static const String buildNumber = '115';
   static const String fullVersion = '$version+$buildNumber';
 
   /// Shows "Internal" in debug builds, actual version in release.
   static String get displayVersion => kDebugMode ? 'Internal' : version;
-  
-  
+
   static const String appName = 'SpotiFLAC';
   static const String copyright = '© 2026 SpotiFLAC';
-  
+
   static const String mobileAuthor = 'zarzet';
   static const String originalAuthor = 'afkarxyz';
-  
+
   static const String githubRepo = 'zarzet/SpotiFLAC-Mobile';
   static const String githubUrl = 'https://github.com/$githubRepo';
-  static const String originalGithubUrl = 'https://github.com/afkarxyz/SpotiFLAC';
-  
+  static const String originalGithubUrl =
+      'https://github.com/afkarxyz/SpotiFLAC';
+
   static const String kofiUrl = 'https://ko-fi.com/zarzet';
   static const String githubSponsorsUrl = 'https://github.com/sponsors/zarzet/';
 }

lib/screens/settings/about_page.dart

@@ -511,6 +511,30 @@ class _TranslatorsSection extends StatelessWidget {
       language: 'Japanese',
       flag: '🇯🇵',
     ),
+    _Translator(
+      name: 'unkn0wn',
+      crowdinUsername: 'rdclvi',
+      language: 'Indonesian',
+      flag: '🇮🇩',
+    ),
+    _Translator(
+      name: 'lunching1272',
+      crowdinUsername: 'lunching1272',
+      language: 'Chinese Simplified',
+      flag: '🇨🇳',
+    ),
+    _Translator(
+      name: 'Сергей Ильченко',
+      crowdinUsername: 'Sega_Mostky',
+      language: 'Russian',
+      flag: '🇷🇺',
+    ),
+    _Translator(
+      name: 'Girl-lass',
+      crowdinUsername: 'Girl-lass',
+      language: 'Chinese Simplified',
+      flag: '🇨🇳',
+    ),
     _Translator(
       name: 'Kaan',
       crowdinUsername: 'glai',

pubspec.yaml

@@ -1,7 +1,7 @@
 name: spotiflac_android
 description: Download Spotify tracks in FLAC from Tidal, Qobuz & Deezer
 publish_to: "none"
-version: 3.8.8+114
+version: 3.9.0+115
 
 environment:
   sdk: ^3.10.0