+signup +login

frontend/pshared/lib/api/errors/authorization_failed.dart

@@ -1,2 +1,22 @@
-class AuthorizationFailed implements Exception {
+class AuthenticationFailedException implements Exception {
+  final String message;
+  final Exception? originalError;
+
+  const AuthenticationFailedException(this.message, [this.originalError]);
+
+  @override
+  String toString() {
+    return 'AuthenticationFailedException: $message${originalError != null ? ' (caused by: $originalError)' : ''}';
+  }
+}
+
+class CircuitBreakerOpenException implements Exception {
+  final String message;
+
+  const CircuitBreakerOpenException(this.message);
+
+  @override
+  String toString() {
+    return 'CircuitBreakerOpenException: $message';
+  }
 }