feat(lang): 添加并扩展多语言验证和管理员提示信息

- 在英语和尼泊尔语中新增管理员相关提示‘integration_site_store_deprecated’
- 丰富了验证属性的多语言条目，覆盖更多字段及嵌套属性
- 新增验证业务规则的语言提示，补充限制和条件说明
- 扩展自定义验证消息，加入数组、邮箱、角色、返点率等多种验证提示
- 增加多个验证规则的语言描述，支持更多常见的验证类型及场景
- 尼泊尔语验证文件调整，改用多个文件合并方式加载结构
- 尼泊尔语钱包错误消息中新增代码1011的翻译描述

lang/en/admin.php

@@ -16,6 +16,7 @@ return [
     'integration_site_last_delete_denied' => 'At least one integration site must remain; the last site cannot be deleted.',
     'no_integration_site' => 'Create an integration site first.',
     'site_player_access_denied' => 'You do not have access to players under this site.',
+    'integration_site_store_deprecated' => 'Create integration sites in Platform Config → Integration Sites, then bind a level-1 agent in Agent Config → Create Level-1 Agent.',
     'player_create_site_forbidden' => 'You cannot create players under this site.',
     'player_create_agent_required' => 'A player must belong to an agent node. Choose a valid site with an agent root, or sign in with an agent-bound account.',
     'player_create_agent_forbidden' => 'You cannot assign the player to this agent node.',