feat(auth): 登录页改为 ymb 品牌并支持后台配置背景图

lib/l10n/app_localizations_en.dart

@@ -9,7 +9,7 @@ class AppLocalizationsEn extends AppLocalizations {
   AppLocalizationsEn([String locale = 'en']) : super(locale);
 
   @override
-  String get appName => 'FruitShorts';
+  String get appName => 'ymb';
 
   @override
   String get demo => 'DEMO';
@@ -67,7 +67,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get recommended => 'Recommended';
 
   @override
-  String get fruitShortsBrand => 'FruitShorts';
+  String get fruitShortsBrand => 'ymb';
 
   @override
   String get comingSoon => 'Coming soon';
@@ -831,10 +831,10 @@ class AppLocalizationsEn extends AppLocalizations {
   String get preferencesHeading => 'PREFERENCES';
 
   @override
-  String get brandMark => 'FRUITSHORTS';
+  String get brandMark => 'YMB';
 
   @override
-  String get shareFooter => 'FruitShorts';
+  String get shareFooter => 'ymb';
 
   @override
   String get shortsTab => 'Shorts';
@@ -1795,7 +1795,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get contactSupport => 'Contact support';
 
   @override
-  String get vipBrandName => 'FruitShorts VIP';
+  String get vipBrandName => 'VIP';
 
   @override
   String get vipOpenNow => 'Get VIP';
@@ -1886,6 +1886,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get aboutUs => 'About us';
 
+  @override
+  String get aboutBrandName => 'Your mini business';
+
   @override
   String get aboutDescription =>
       'A focused, immersive place to watch short dramas.';