重构事件信息页面，移除不必要的加载状态和错误消息字段，简化状态管理逻辑；在扫码页面中增强选手信息查询功能，添加加载提示和错误处理。

lib/features/scan_qrcode/pages/page_scan_qrcode.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_easyloading/flutter_easyloading.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:recording_tool/app/router/app_navigator.dart';
@@ -6,7 +7,9 @@ import 'package:recording_tool/core/cache/app_storage.dart';
 import 'package:recording_tool/core/cache/storage_keys.dart';
 import 'package:recording_tool/features/auth/pages/page_auth.dart';
 import 'package:recording_tool/features/auth/view_model_auth/view_model_auth.dart';
+import 'package:recording_tool/features/events/model/model_event_info.dart';
 import 'package:recording_tool/features/events/pages/page_event_info.dart';
+import 'package:recording_tool/features/events/view_model/view_model_event_info.dart';
 import 'package:recording_tool/features/recording/model/model_recording_context.dart';
 import 'package:recording_tool/shared/widgets/app_bar.dart';
 import 'package:recording_tool/shared/widgets/app_button.dart';
@@ -126,12 +129,30 @@ class _AuthPageWidgetState extends ConsumerState<ScanQrCodePage> {
                       context,
                     );
                     if (playerId == null || playerId.isEmpty) {
-                      AppToast.show('无效的参赛凭证');
+                      AppToast.show('查询选手信息失败');
                       return;
                     }
+                    EasyLoading.show(status: '查询选手信息...');
+                    try {
+                      final success = await ref
+                          .read(eventInfoProvider.notifier)
+                          .loadRegistrationList(
+                            request: PlayerRegistrationListReq(
+                              userId: playerId,
+                            ),
+                          );
+                      EasyLoading.dismiss();
+                      if (!success) {
+                        AppToast.show('查询选手信息失败');
+                        return;
+                      }
+                      if (!mounted) return;
 
-                    /// TODO
-                    AppNavigator.push(EventInfoPage(playerId: playerId));
+                      AppNavigator.push(EventInfoPage(playerId: playerId));
+                    } catch (error) {
+                      AppToast.show('查询选手信息失败');
+                      EasyLoading.dismiss();
+                    }
                   },
                   variant: AppButtonVariant.secondary,
                 ),