update file

attacker/build.gradle

+jar { enabled = false }

attacker/client/build.gradle

+repositories {
+  mavenCentral() // Ensure Maven Central is included
+}
+
+dependencies {
+  implementation project(':infrastructure:async')
+  implementation 'com.github.briandilley.jsonrpc4j:jsonrpc4j:1.7'
+  implementation 'com.fasterxml.jackson.core:jackson-annotations:2.15.2'
+}
+description = 'Teku Attacker Client'
\ No newline at end of file

attacker/client/src/main/java/tech/pegasys/teku/attacker2/AttackService.java → attacker/client/src/main/java/tech/pegasys/teku/attacker/AttackService.java

-package tech.pegasys.teku.attacker2;
+package tech.pegasys.teku.attacker;
 
 import com.googlecode.jsonrpc4j.JsonRpcHttpClient;
 
-import tech.pegasys.teku.attacker.client.*;
 import tech.pegasys.teku.infrastructure.async.SafeFuture;
 
 public class AttackService {

attacker/client/src/main/java/tech/pegasys/teku/attacker/AttackerCommand.java

+/*
+ * Copyright Consensys Software Inc., 2025
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package tech.pegasys.teku.attacker;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * AttackerCommand defines the command types that can be returned by the attacker client API. This
+ * matches the Go implementation in tsinghua-cel/attacker-client-go/client/type.go.
+ */
+public enum AttackerCommand {
+  CMD_NULL(0),
+  CMD_CONTINUE(1),
+  CMD_RETURN(2),
+  CMD_ABORT(3),
+  CMD_SKIP(4),
+  CMD_ROLE_TO_NORMAL(5), // Role changes to normal node
+  CMD_ROLE_TO_ATTACKER(6), // Role changes to attacker
+  CMD_EXIT(7),
+  CMD_UPDATE_STATE(8),
+  CMP_DELAY_BROAD_CAST(9);
+
+  private final int value;
+
+  AttackerCommand(int value) {
+    this.value = value;
+  }
+
+  @JsonValue
+  public int getValue() {
+    return value;
+  }
+
+  @JsonCreator
+  public static AttackerCommand fromValue(int value) {
+    for (AttackerCommand command : AttackerCommand.values()) {
+      if (command.value == value) {
+        return command;
+      }
+    }
+    throw new IllegalArgumentException("Unknown AttackerCommand value: " + value);
+  }
+}

attacker/client/src/main/java/tech/pegasys/teku/attacker/AttackerResponse.java

+/*
+ * Copyright Consensys Software Inc., 2025
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package tech.pegasys.teku.attacker;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * AttackerResponse defines the response from the attacker client API. This matches the Go
+ * implementation in tsinghua-cel/attacker-client-go/client/type.go.
+ */
+public class AttackerResponse {
+  @JsonProperty("cmd")
+  private AttackerCommand cmd;
+
+  @JsonProperty("result")
+  private String result;
+
+  public AttackerResponse() {
+    // Default constructor for Jackson deserialization
+  }
+
+  public AttackerResponse(AttackerCommand cmd, String result) {
+    this.cmd = cmd;
+    this.result = result;
+  }
+
+  public AttackerCommand getCmd() {
+    return cmd;
+  }
+
+  public String getResult() {
+    return result;
+  }
+
+  /**
+   * Convenience method to check if the command is CMD_CONTINUE.
+   *
+   * @return true if the command is CMD_CONTINUE, false otherwise
+   */
+  public boolean shouldContinue() {
+    return cmd == AttackerCommand.CMD_CONTINUE;
+  }
+
+  /**
+   * Convenience method to check if the command is CMD_ABORT.
+   *
+   * @return true if the command is CMD_ABORT, false otherwise
+   */
+  public boolean shouldAbort() {
+    return cmd == AttackerCommand.CMD_ABORT;
+  }
+
+  @Override
+  public String toString() {
+    return "AttackerResponse{" + "cmd=" + cmd + ", result='" + result + '\'' + '}';
+  }
+}

attacker/client/src/main/java/tech/pegasys/teku/attacker2/JsonRpcClientUtil.java → attacker/client/src/main/java/tech/pegasys/teku/attacker/JsonRpcClientUtil.java

-package tech.pegasys.teku.attacker2;
+package tech.pegasys.teku.attacker;
 
 import com.googlecode.jsonrpc4j.JsonRpcHttpClient;