fix(okx): 修复账户WebSocket数据解析空值异常

Administrator

2025-12-12 cc2a761ebb4494b7f457092cd1b282f1302d4740

 src/main/java/com/xcong/excoin/modules/contract/entity/ContractHoldOrderEntity.java

@@ -146,4 +146,9 @@
     * 批次号 队列平仓时使用，避免重复
     */
    public String batchNo;

    /**
     * 持仓费
     */
    private BigDecimal holdAmount;
}