feat: 增改时校验客户名称和编号唯一

agt-module-license/agt-module-license-api/src/main/java/org/agt/module/license/enums/ErrorCodeConstants.java

@@ -8,5 +8,7 @@ import org.agt.framework.common.exception.ErrorCode;
  * @since: 2025-05-22
  */
 public interface ErrorCodeConstants {
-    ErrorCode CUSTOMER_NOT_EXISTS = new ErrorCode(2000, "客户不存在");
+    ErrorCode CUSTOMER_NOT_EXISTS = new ErrorCode(1_100_001_001, "客户不存在");
+    ErrorCode CUSTOMER_NAME_DUPLICATE = new ErrorCode(1_100_001_002, "客户名称`{}`已存在");
+    ErrorCode CUSTOMER_CODE_DUPLICATE = new ErrorCode(1_100_001_003, "客户编号`{}`已存在");
 }