feat(calls): 微信语音列表加今日统计卡片+通话时间范围筛选+客户跳转带通话时间定位(对齐云客)

- GET /api/calls/stats:今日(Asia/Shanghai)好友呼入/外呼量+群量+时长聚合(@chatroom判群)
- CallList:5张统计卡片(仅微信语音tab)+datetimerange筛选(服务端start/end)+viewCallCustomer带?start定位
- TDD新增stats聚合测试,全量绿

Co-Authored-By: Claude <noreply@anthropic.com>

yunkes/src/api/index.ts

@@ -7,6 +7,7 @@ import { getJson, requestJson } from './client'
 import type {
   Account,
   CallChannel,
+  CallStats,
   Channel,
   Customer,
   Department,
@@ -185,6 +186,10 @@ export interface CallQuery {
   page_size?: number
 }
 
+export function getCallStats(): Promise<CallStats> {
+  return getJson<CallStats>('/calls/stats')
+}
+
 export function getCalls(query: CallQuery = {}): Promise<Page<PhoneCall>> {
   return getJson<Page<PhoneCall>>(
     '/calls',