feat(douyu): 新增和平小店查询模块(绑定角色/商品列表/点券余额)

- activity_client: getIframeUrl 签发 code/sig,道聚城 getrole.out/recommend/balance 接口
  (2026-08 起需 isCode=1 + authType=delegate + sAnchorId 才能通过 Livelink 校验)
- 迁移 0016: accounts xpd_* 字段、douyu_config 小店配置(actAlias/actId/rid)、
  douyu_xpd_goods_snapshot 商品快照表
- runner/service/router/schema 注册 query_xpd_role/refresh_xpd_goods/query_xpd_balance
  三个任务,任务结果剥离 role.raw 防 openid 泄露
- 前端: 和平小店路由/菜单/DouyuTasksPage 三态/商品下拉/配置弹窗

web/frontend/src/api/douyu.ts

@@ -6,6 +6,7 @@ import type {
   DouyuTaskBatchRequest,
   DouyuTaskBatchResult,
   DouyuTaskItem,
+  DouyuXpdGoodsItem,
   MessageResponse,
   PageParams,
   PaginatedResponse,
@@ -21,6 +22,7 @@ export const douyuApi = {
   updateConfig: (data: Partial<DouyuConfig>) => api.put<DouyuConfig, DouyuConfig>('/douyu/config', data),
   listGoods: () => api.get<DouyuGoodsItem[], DouyuGoodsItem[]>('/douyu/goods'),
   listEsportsGoods: () => api.get<DouyuGoodsItem[], DouyuGoodsItem[]>('/douyu/esports-goods'),
+  listPeaceGoods: () => api.get<DouyuXpdGoodsItem[], DouyuXpdGoodsItem[]>('/douyu/xpd-goods'),
   createTasks: (data: DouyuTaskBatchRequest) =>
     api.post<DouyuTaskBatchResult, DouyuTaskBatchResult>('/douyu/tasks/batch', data),
   listTasks: (batchId?: string) =>