fix: update Crowdin config for Chinese locales and add missing l10n keys

- Change crowdin.yml to use %locale_with_underscore% for proper zh_CN/zh_TW handling
- Add sectionLanguage, appearanceLanguage, appearanceLanguageSubtitle to app_en.arb
- Add app_zh_CN.arb for Simplified Chinese (Crowdin target)
- Update .gitignore to exclude log files and tool/ folder
- Regenerate localization dart files

.gitignore

@@ -62,3 +62,11 @@ AGENTS.md
 
 # Temp/misc
 nul
+
+# Log files
+*.log
+hs_err_*.log
+flutter_*.log
+
+# Development tools
+tool/

crowdin.yml

@@ -1,3 +1,3 @@
 files:
   - source: /lib/l10n/arb/app_en.arb
-    translation: /lib/l10n/arb/app_%two_letters_code%.arb
+    translation: /lib/l10n/arb/app_%locale_with_underscore%.arb

lib/l10n/app_localizations.dart

@@ -116,6 +116,7 @@ abstract class AppLocalizations {
     Locale('pt'),
     Locale('ru'),
     Locale('zh'),
+    Locale('zh', 'CN'),
     Locale('zh', 'TW'),
   ];
 
@@ -2621,42 +2622,24 @@ abstract class AppLocalizations {
   /// **'Layout'**
   String get sectionLayout;
 
-  /// Settings section header for language selection
+  /// Settings section header for language
   ///
   /// In en, this message translates to:
   /// **'Language'**
   String get sectionLanguage;
 
-  /// Setting title for language selection
+  /// Language setting title
   ///
   /// In en, this message translates to:
   /// **'App Language'**
   String get appearanceLanguage;
 
-  /// Subtitle for language setting
+  /// Language setting subtitle
   ///
   /// In en, this message translates to:
   /// **'Choose your preferred language'**
   String get appearanceLanguageSubtitle;
 
-  /// Use device system language
-  ///
-  /// In en, this message translates to:
-  /// **'System Default'**
-  String get languageSystem;
-
-  /// English language option
-  ///
-  /// In en, this message translates to:
-  /// **'English'**
-  String get languageEnglish;
-
-  /// Indonesian language option
-  ///
-  /// In en, this message translates to:
-  /// **'Bahasa Indonesia'**
-  String get languageIndonesian;
-
   /// Appearance settings description
   ///
   /// In en, this message translates to:
@@ -3683,6 +3666,8 @@ AppLocalizations lookupAppLocalizations(Locale locale) {
     case 'zh':
       {
         switch (locale.countryCode) {
+          case 'CN':
+            return AppLocalizationsZhCn();
           case 'TW':
             return AppLocalizationsZhTw();
         }

lib/l10n/app_localizations_de.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_en.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_es.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_fr.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_hi.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_id.dart

@@ -1455,15 +1455,6 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Pilih bahasa yang kamu inginkan';
 
-  @override
-  String get languageSystem => 'Bawaan Sistem';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Tema, warna, tampilan';
 

lib/l10n/app_localizations_ja.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_ko.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_nl.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_pt.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/app_localizations_ru.dart

@@ -1445,15 +1445,6 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get appearanceLanguageSubtitle => 'Choose your preferred language';
 
-  @override
-  String get languageSystem => 'System Default';
-
-  @override
-  String get languageEnglish => 'English';
-
-  @override
-  String get languageIndonesian => 'Bahasa Indonesia';
-
   @override
   String get settingsAppearanceSubtitle => 'Theme, colors, display';
 

lib/l10n/arb/app_en.arb

@@ -1055,6 +1055,12 @@
   "@sectionTheme": {"description": "Settings section header"},
   "sectionLayout": "Layout",
 "@sectionLayout": {"description": "Settings section header"},
+  "sectionLanguage": "Language",
+  "@sectionLanguage": {"description": "Settings section header for language"},
+  "appearanceLanguage": "App Language",
+  "@appearanceLanguage": {"description": "Language setting title"},
+  "appearanceLanguageSubtitle": "Choose your preferred language",
+  "@appearanceLanguageSubtitle": {"description": "Language setting subtitle"},
 
   "settingsAppearanceSubtitle": "Theme, colors, display",
   "@settingsAppearanceSubtitle": {"description": "Appearance settings description"},