fix(buscar): rebuild the offline banner with offlineAccent

Audit 13.1 (t4 line 641): the banner rendered wifi_off in
colorScheme.error (red) inside a generic glass card. Rebuilt using
offlineAccent (#E8879A) — a token that existed since Tier 1 with no
consumer — for the tint, border and icon, plus the prototype's title/
detail layout and a restyled Retry chip. New offlineBannerTitle key
translated to all 13 locales.

lib/l10n/gen/app_localizations.dart

@@ -1438,6 +1438,12 @@ abstract class AppLocalizations {
   /// **'Géneros'**
   String get genresTitle;
 
+  /// No description provided for @offlineBannerTitle.
+  ///
+  /// In es, this message translates to:
+  /// **'Sin conexión'**
+  String get offlineBannerTitle;
+
   /// No description provided for @retryAction.
   ///
   /// In es, this message translates to:

lib/l10n/gen/app_localizations_ar.dart

@@ -766,6 +766,9 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get genresTitle => 'الأنواع';
 
+  @override
+  String get offlineBannerTitle => 'لا يوجد اتصال';
+
   @override
   String get retryAction => 'إعادة المحاولة';
 

lib/l10n/gen/app_localizations_bn.dart

@@ -769,6 +769,9 @@ class AppLocalizationsBn extends AppLocalizations {
   @override
   String get genresTitle => 'ধরন';
 
+  @override
+  String get offlineBannerTitle => 'সংযোগ নেই';
+
   @override
   String get retryAction => 'আবার চেষ্টা করুন';
 

lib/l10n/gen/app_localizations_de.dart

@@ -772,6 +772,9 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get genresTitle => 'Genres';
 
+  @override
+  String get offlineBannerTitle => 'Keine Verbindung';
+
   @override
   String get retryAction => 'Erneut versuchen';
 

lib/l10n/gen/app_localizations_en.dart

@@ -765,6 +765,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get genresTitle => 'Genres';
 
+  @override
+  String get offlineBannerTitle => 'No connection';
+
   @override
   String get retryAction => 'Retry';
 

lib/l10n/gen/app_localizations_es.dart

@@ -770,6 +770,9 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get genresTitle => 'Géneros';
 
+  @override
+  String get offlineBannerTitle => 'Sin conexión';
+
   @override
   String get retryAction => 'Reintentar';
 

lib/l10n/gen/app_localizations_fr.dart

@@ -774,6 +774,9 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get genresTitle => 'Genres';
 
+  @override
+  String get offlineBannerTitle => 'Aucune connexion';
+
   @override
   String get retryAction => 'Réessayer';
 

lib/l10n/gen/app_localizations_hi.dart

@@ -766,6 +766,9 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get genresTitle => 'शैलियाँ';
 
+  @override
+  String get offlineBannerTitle => 'कोई कनेक्शन नहीं';
+
   @override
   String get retryAction => 'फिर कोशिश करें';
 

lib/l10n/gen/app_localizations_id.dart

@@ -766,6 +766,9 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get genresTitle => 'Genre';
 
+  @override
+  String get offlineBannerTitle => 'Tidak ada koneksi';
+
   @override
   String get retryAction => 'Coba lagi';
 

lib/l10n/gen/app_localizations_it.dart

@@ -772,6 +772,9 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get genresTitle => 'Generi';
 
+  @override
+  String get offlineBannerTitle => 'Nessuna connessione';
+
   @override
   String get retryAction => 'Riprova';
 

lib/l10n/gen/app_localizations_ja.dart

@@ -740,6 +740,9 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get genresTitle => 'ジャンル';
 
+  @override
+  String get offlineBannerTitle => '接続なし';
+
   @override
   String get retryAction => '再試行';
 

lib/l10n/gen/app_localizations_pt.dart

@@ -769,6 +769,9 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get genresTitle => 'Gêneros';
 
+  @override
+  String get offlineBannerTitle => 'Sem conexão';
+
   @override
   String get retryAction => 'Tentar novamente';
 

lib/l10n/gen/app_localizations_ru.dart

@@ -770,6 +770,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get genresTitle => 'Жанры';
 
+  @override
+  String get offlineBannerTitle => 'Нет подключения';
+
   @override
   String get retryAction => 'Повторить';
 

lib/l10n/gen/app_localizations_zh.dart

@@ -737,6 +737,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get genresTitle => '类型';
 
+  @override
+  String get offlineBannerTitle => '无连接';
+
   @override
   String get retryAction => '重试';