yxk-20260506-"部门负责人接受任务并分配"节点可以选择子流程经办人，并存入局部流程变量，供后续使用。

src/views/bg/bgpartymatter/components/BgPartymatterBPMForm.vue

@@ -148,6 +148,23 @@
       <template v-if="showProcessHandle">
         <a-divider />
         <div class="section-title">流程办理</div>
+        <a-form class="process-variable-form" :labelCol="labelCol" :wrapperCol="wrapperCol">
+          <a-row :gutter="16">
+            <a-col :span="24">
+              <a-form-item label="子流程经办人" :labelCol="wideLabelCol" :wrapperCol="wideWrapperCol">
+                <a-space class="sub-approve-user-row">
+                  <a-input
+                    v-model:value="subApproveUser"
+                    placeholder="输入username，多个用英文逗号分隔"
+                    allow-clear
+                    :disabled="savingSubApproveUser"
+                  />
+                  <a-button type="primary" :loading="savingSubApproveUser" @click="saveSubApproveUserVariable">保存经办人</a-button>
+                </a-space>
+              </a-form-item>
+            </a-col>
+          </a-row>
+        </a-form>
         <TaskHandleInnerContent
           :form-data="formData"
           :claim="claim"
@@ -164,7 +181,7 @@
   import { defHttp } from '/@/utils/http/axios';
   import { useMessage } from '/@/hooks/web/useMessage';
   import JSelectDept from '/@/components/Form/src/jeecg/components/JSelectDept.vue';
-  import { bgPartymatterFeedbackList, bgPartymatterFeedbackSaveOrUpdate, saveBpmForm } from '../BgPartymatter.api';
+  import { bgPartymatterFeedbackList, bgPartymatterFeedbackSaveOrUpdate, saveBpmForm, setProcessVariable } from '../BgPartymatter.api';
   import { usePermission } from '/@/hooks/web/usePermission';
   import TaskHandleInnerContent from '/@/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue';
   const { isDisabledAuth, hasPermission, initBpmFormData} = usePermission();
@@ -192,8 +209,10 @@
   const loading = ref(false);
   const savingMain = ref(false);
   const savingFeedback = ref(false);
+  const savingSubApproveUser = ref(false);
   const showFeedbackForm = ref(false);
   const feedbackList = ref<any[]>([]);
+  const subApproveUser = ref('');
 
   const mainForm = reactive<Record<string, any>>({
     id: '',
@@ -356,6 +375,45 @@
     }
   }
 
+  async function saveSubApproveUserVariable() {
+    const processInstanceId = processInfo.value.processInstanceId;
+    const usernameValue = normalizeUsernameList(subApproveUser.value);
+    if (!processInstanceId) {
+      createMessage.warning('流程实例ID不能为空');
+      return;
+    }
+    if (!usernameValue) {
+      createMessage.warning('请输入子流程经办人username');
+      return;
+    }
+
+    savingSubApproveUser.value = true;
+    try {
+      const res = await setProcessVariable({
+        processInstanceId,
+        taskId: processInfo.value.taskId,
+        local: true,
+        varField: 'subApproveUser',
+        varVal: usernameValue,
+      });
+      if (res.success) {
+        createMessage.success(res.message || '保存成功');
+      } else {
+        createMessage.warning(res.message || '保存失败');
+      }
+    } finally {
+      savingSubApproveUser.value = false;
+    }
+  }
+
+  function normalizeUsernameList(value: string) {
+    return String(value || '')
+      .split(',')
+      .map((item) => item.trim())
+      .filter(Boolean)
+      .join(',');
+  }
+
   function handleProcessSuccess() {
     emit('success');
   }
@@ -404,6 +462,20 @@
     border-top: 1px solid #f0f0f0;
   }
 
+  .process-variable-form {
+    margin-bottom: 12px;
+  }
+
+  .sub-approve-user-row {
+    display: flex;
+    width: 100%;
+
+    :deep(.ant-input-affix-wrapper),
+    :deep(.ant-input) {
+      min-width: 280px;
+    }
+  }
+
   .main-actions {
     display: flex;
     justify-content: center;