VHS-Karten integriert, Bildzoom ergänzt und Chat-IDs korrigiert

Unterschriftenerfassung dauerhaft auf Deutsch anzeigen, lokale VHS-Buildkonfiguration und Regressionstests ergänzen sowie Version auf 357.0.0+357 anheben.

lib/tools/app_localizations.dart

@@ -56,8 +56,8 @@ class AppLocalizations {
   }
 
   // Hilfsmethode für einfachen Zugriff
-  static String tr(String key) {
-    return _instance._translations[_instance._currentLanguage.code]?[key] ??
+  static String tr(String key, {AppLanguage? language}) {
+    return _instance._translations[(language ?? _instance._currentLanguage).code]?[key] ??
         _instance._translations['de']?[key] ??
         key;
   }

lib/tools/util.dart

@@ -489,22 +489,22 @@ bool isJobTooFarInFuture(Job job) {
   return ordertime > dateTimeThreshold;
 }
 
-Future<bool> taskDialogSecurityException(BuildContext context) async {
+Future<bool> taskDialogSecurityException(BuildContext context, {AppLanguage? language}) async {
   final result = await showDialog<bool>(
     context: context,
     barrierDismissible: false,
     builder: (dialogContext) {
       return AlertDialog(
-        title: Text('attention'.tr),
-        content: Text('close_dialog_warning'.tr),
+        title: Text(AppLocalizations.tr('attention', language: language)),
+        content: Text(AppLocalizations.tr('close_dialog_warning', language: language)),
         actions: [
           TextButton(
             onPressed: () => Navigator.of(dialogContext).pop(true),
-            child: Text('close'.tr),
+            child: Text(AppLocalizations.tr('close', language: language)),
           ),
           TextButton(
             onPressed: () => Navigator.of(dialogContext).pop(false),
-            child: Text('back'.tr),
+            child: Text(AppLocalizations.tr('back', language: language)),
           ),
         ],
       );

lib/tools/vhs_map_access.dart

@@ -0,0 +1,33 @@
+class VhsMapAccess {
+  VhsMapAccess(this.uri);
+
+  final Uri uri;
+  static const int maxAuthenticationAttempts = 3;
+  int _authenticationAttempts = 0;
+
+  static bool _isValidUri(Uri value) =>
+      value.scheme == 'https' &&
+      value.hasAuthority &&
+      value.host.isNotEmpty &&
+      value.userInfo.isEmpty &&
+      value.port > 0 &&
+      value.port <= 65535;
+
+  bool get isValid => _isValidUri(uri);
+
+  bool allowsNavigation(Uri target) =>
+      isValid && _isValidUri(target) && target.origin == uri.origin;
+
+  // Die WebView liefert bei Authentifizierungsanfragen nur Host und Realm.
+  bool allowsAuthentication(String host) =>
+      isValid && host.toLowerCase() == uri.host.toLowerCase();
+
+  bool tryAuthentication(String host) {
+    if (!allowsAuthentication(host) ||
+        _authenticationAttempts >= maxAuthenticationAttempts) {
+      return false;
+    }
+    _authenticationAttempts++;
+    return true;
+  }
+}