feat(admin): 密码校验统一与后台 API/设置增强

- 管理端账号/代理/站点等密码最短长度统一为 6 位
- LotterySettings、审计日志展示、币种与报表接口等小修复
- 补充设置批量更新、注单、校验错误等相关测试

tests/Feature/AdminUserPermissionApiTest.php

@@ -260,7 +260,7 @@ test('permission catalog groups permissions by admin navigation order', function
     expect($groups[2]['key'])->toBe('draws');
 
     $groupsByKey = collect($groups)->keyBy('key');
-    expect($groupsByKey['admin_users']['label'])->toBe('管理列表');
+    expect($groupsByKey['admin_users']['label'])->toBe('平台账号');
     expect(array_column($groupsByKey['admin_users']['permissions'], 'slug'))->toBe(['prd.admin_user.manage']);
     expect($groupsByKey['admin_roles']['label'])->toBe('角色管理');
     expect(array_column($groupsByKey['admin_roles']['permissions'], 'slug'))->toBe(['prd.admin_role.manage']);