Apply dart format to all files

lib/widgets/error_display.dart

@@ -3,12 +3,8 @@ import 'package:flutter/material.dart';
 class ErrorDisplay extends StatelessWidget {
   final String message;
   final VoidCallback? onRetry;
-  
-  const ErrorDisplay({
-    super.key,
-    required this.message,
-    this.onRetry,
-  });
+
+  const ErrorDisplay({super.key, required this.message, this.onRetry});
 
   @override
   Widget build(BuildContext context) {
@@ -18,11 +14,7 @@ class ErrorDisplay extends StatelessWidget {
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: [
-            const Icon(
-              Icons.error_outline,
-              size: 48,
-              color: Colors.red,
-            ),
+            const Icon(Icons.error_outline, size: 48, color: Colors.red),
             const SizedBox(height: 16),
             Text(
               message,
@@ -31,14 +23,11 @@ class ErrorDisplay extends StatelessWidget {
             ),
             if (onRetry != null) ...[
               const SizedBox(height: 16),
-              ElevatedButton(
-                onPressed: onRetry,
-                child: const Text('Retry'),
-              ),
+              ElevatedButton(onPressed: onRetry, child: const Text('Retry')),
             ],
           ],
         ),
       ),
     );
   }
-}
+}