baiyue-firstleg/common-event-contract/src/main/java/com/baiyue/common/event/EventProtocolException.java

package com.baiyue.common.event;

/** An immutable event violates the consumption protocol; retrying unchanged data cannot fix it. */
public class EventProtocolException extends IllegalArgumentException {
    public EventProtocolException(String message) { super(message); }
    public EventProtocolException(String message, Throwable cause) { super(message, cause); }
}