c5 429

[shyshy1107]

同步c5数据时会出现429，可能是请求太快？
日志：
2026-05-14 11:30:44 INF c5: verify ok component=app component=sync component=c5
2026-05-14 11:30:44 INF c5: fetching balance component=app component=sync component=c5
2026-05-14 11:30:44 INF c5: fetching buy history component=app component=sync component=c5 since=0
2026-05-14 11:30:44 INF c5: fetching sell history component=app component=sync component=c5 since=0
2026-05-14 11:30:44 WRN request retrying component=app component=sync component=c5 platform=c5 method=GET path=/merchant/account/v2/balance wait=464.142184ms err="HTTP 429"
2026-05-14 11:30:45 WRN request retrying component=app component=sync component=c5 platform=c5 method=GET path=/merchant/account/v2/balance wait=458.787787ms err="HTTP 429"

[CsJsss]

@shyshy1107 可以调整一下c5 client请求的频率， pkg/utils.go FetchAllPages中的pageSleep参数。