feat(ws): 添加WebSocket订阅状态追踪功能

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2026-06-04 32ee67f16729ce809e7f144549528a0f7cfd7aee

 src/main/java/com/xcong/excoin/common/system/base/BaseEntity.java

@@ -28,4 +28,6 @@

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date updateTime;

    private Integer version;
}