test: 协调单用例改用外部流程节点链断言（#51）

src/test/java/com/gxwebsoft/approval/ApprovalCoordinationIT.java

@@ -132,8 +132,11 @@ class ApprovalCoordinationIT {
     // 实例固定引用创建时的定义版本（v2）
     assertThat(data.queryMaster("SELECT definition_version FROM approval_instance WHERE id = ?",
       Integer.class, instanceId)).isEqualTo(2);
-    assertThat(data.countMaster("SELECT COUNT(*) FROM approval_flow_definition "
-      + "WHERE tenant_id = ? AND flow_code = 'coordination_external'", TENANT)).isZero();
+    // 外部协调单是独立流程（#51）：共用 doc_type，但节点链多一个受理部门分管领导
+    String externalNodes = data.queryMaster("SELECT nodes_json FROM approval_flow_definition "
+      + "WHERE tenant_id = ? AND flow_code = 'coordination_external' "
+      + "ORDER BY version DESC LIMIT 1", String.class, TENANT);
+    assertThat(externalNodes).contains("acceptLeader").contains("acceptOrgDeputy");
 
     // 报送部门与报送人只取登录态，客户端伪造字段被忽略
     ApprovalTestData.TestUser other = data.createUser("他人" + data.uniqueSuffix(), acceptOrgId);