Initial commit

lib/shared/utils/user_error_formatter.dart

@@ -0,0 +1,13 @@
+import '../../core/domain/errors.dart';
+
+String formatUserError(Object? error, {String fallback = '操作失败'}) {
+  if (error == null) return fallback;
+  if (error is DomainError) return error.message;
+
+  final raw = error.toString().trim();
+  if (raw.isEmpty) return fallback;
+
+  return raw
+      .replaceFirst(RegExp(r'^(Exception|StateError|TimeoutException):\s*'), '')
+      .trim();
+}