feat(system-server): 添加 DataBus MapStruct 数据转换器

- 新增 DatabusDeptConvert (DeptDO → DatabusDeptData)
- 新增 DatabusUserConvert (AdminUserDO → DatabusAdminUserData)
- 新增 DatabusPostConvert (PostDO → DatabusPostData)

说明：
- 转换器忽略了需要额外查询的复杂字段（如 deptType, leaderUserName, depts, posts）
- PostDO 不包含 tenantId，已配置忽略该字段映射
- 验证 system-server 编译通过

Ref: docs/databus/implementation-checklist.md 任务 20-22

zt-module-system/zt-module-system-server/src/main/java/com/zt/plat/module/system/convert/databus/DatabusDeptConvert.java

@@ -0,0 +1,36 @@
+package com.zt.plat.module.system.convert.databus;
+
+import com.zt.plat.module.databus.api.data.DatabusDeptData;
+import com.zt.plat.module.system.dal.dataobject.dept.DeptDO;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+import java.util.List;
+
+/**
+ * 部门数据转换器
+ * <p>
+ * 用于将 DeptDO 转换为 DatabusDeptData
+ *
+ * @author ZT
+ */
+@Mapper
+public interface DatabusDeptConvert {
+
+    DatabusDeptConvert INSTANCE = Mappers.getMapper(DatabusDeptConvert.class);
+
+    /**
+     * DeptDO → DatabusDeptData
+     * <p>
+     * 注意：deptType 和 leaderUserName 字段需要额外处理，这里不做映射
+     */
+    @Mapping(target = "deptType", ignore = true)
+    @Mapping(target = "leaderUserName", ignore = true)
+    DatabusDeptData convert(DeptDO dept);
+
+    /**
+     * List<DeptDO> → List<DatabusDeptData>
+     */
+    List<DatabusDeptData> convertList(List<DeptDO> deptList);
+}

zt-module-system/zt-module-system-server/src/main/java/com/zt/plat/module/system/convert/databus/DatabusPostConvert.java

@@ -0,0 +1,35 @@
+package com.zt.plat.module.system.convert.databus;
+
+import com.zt.plat.module.databus.api.data.DatabusPostData;
+import com.zt.plat.module.system.dal.dataobject.dept.PostDO;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+import java.util.List;
+
+/**
+ * 岗位数据转换器
+ * <p>
+ * 用于将 PostDO 转换为 DatabusPostData
+ *
+ * @author ZT
+ */
+@Mapper
+public interface DatabusPostConvert {
+
+    DatabusPostConvert INSTANCE = Mappers.getMapper(DatabusPostConvert.class);
+
+    /**
+     * PostDO → DatabusPostData
+     * <p>
+     * 注意：tenantId 字段在 PostDO 中不存在，需要额外处理
+     */
+    @Mapping(target = "tenantId", ignore = true)
+    DatabusPostData convert(PostDO post);
+
+    /**
+     * List<PostDO> → List<DatabusPostData>
+     */
+    List<DatabusPostData> convertList(List<PostDO> postList);
+}

zt-module-system/zt-module-system-server/src/main/java/com/zt/plat/module/system/convert/databus/DatabusUserConvert.java

@@ -0,0 +1,36 @@
+package com.zt.plat.module.system.convert.databus;
+
+import com.zt.plat.module.databus.api.data.DatabusAdminUserData;
+import com.zt.plat.module.system.dal.dataobject.user.AdminUserDO;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+import java.util.List;
+
+/**
+ * 用户数据转换器
+ * <p>
+ * 用于将 AdminUserDO 转换为 DatabusAdminUserData
+ *
+ * @author ZT
+ */
+@Mapper
+public interface DatabusUserConvert {
+
+    DatabusUserConvert INSTANCE = Mappers.getMapper(DatabusUserConvert.class);
+
+    /**
+     * AdminUserDO → DatabusAdminUserData
+     * <p>
+     * 注意：depts 和 posts 字段需要额外查询和处理，这里不做映射
+     */
+    @Mapping(target = "depts", ignore = true)
+    @Mapping(target = "posts", ignore = true)
+    DatabusAdminUserData convert(AdminUserDO user);
+
+    /**
+     * List<AdminUserDO> → List<DatabusAdminUserData>
+     */
+    List<DatabusAdminUserData> convertList(List<AdminUserDO> userList);
+}