七月迭代短暂完结,还有很多后端的关键东西没有弄,这是一版赶时间做的东西

internal/gateway/flow_card.go

@@ -45,6 +45,19 @@ func (c *Client) GetRealnameLink(ctx context.Context, req *CardStatusReq) (*Real
 	return doRequestWithResponse[RealnameLinkResp](c, ctx, "/flow-card/RealNameVerification", req)
 }
 
+// SetCardSpeedTier 设置或恢复流量卡固定限速档位。
+// POST /flow-card/speedLimit
+func (c *Client) SetCardSpeedTier(ctx context.Context, req *CardSpeedTierReq) error {
+	if req == nil || req.CardNo == "" || req.Code == "" {
+		return errors.New(errors.CodeInvalidParam, "流量卡号和限速档位不能为空")
+	}
+	// 限速是外部状态写入，网络错误或超时后实际结果不可确定，禁止沿用查询接口的自动重试。
+	requestClient := *c
+	requestClient.maxRetries = 0
+	_, err := requestClient.doRequest(ctx, "/flow-card/speedLimit", req)
+	return err
+}
+
 // BatchQuery 批量查询（预留接口，暂未实现）
 func (c *Client) BatchQuery(ctx context.Context, req *BatchQueryReq) (*BatchQueryResp, error) {
 	return nil, errors.New(errors.CodeGatewayError, "批量查询接口暂未实现")