feat(douyu): 和平小店绑定功能(生成绑定二维码/查询绑定信息)

- activity_client: xpd_bind_qr(roleParam 签发 livelink 绑定链接, 微信扫码进小程序绑定)
  + xpd_bind_info(bindInfo 查询绑定状态/角色/平台), gameRole 非 dict 边界防护
- runner/service: 注册 get_xpd_bind_qr / query_xpd_bind_info 任务, 回写
  xpd_game_name / xpd_bind_status
- router: get_xpd_bind_qr 的 url 加入列表接口保留白名单(二维码展示)
- 前端: 和平小店面板新增两个按钮, 二维码列支持 get_xpd_bind_qr 展示/放大

web/backend/services/douyu_service.py

@@ -38,6 +38,8 @@ SUPPORTED_DOUYU_TASK_TYPES = {
     "refresh_goods": "刷新商品列表",
     "query_exchange_records": "一键查询兑换记录",
     "prefetch_csrf_token": "一键获取兑换 CSRF Token",
+    "get_xpd_bind_qr": "生成小店绑定二维码",
+    "query_xpd_bind_info": "查询小店绑定信息",
     "query_xpd_role": "查询小店绑定角色",
     "refresh_xpd_goods": "刷新小店商品列表",
     "query_xpd_balance": "查询小店点券余额",