将数据存入业务表单json字段，并适配后端修改

src/views/bg/xispeak/components/BgXiSpeakBPMForm.vue

@@ -244,7 +244,7 @@
                 </a-radio-group>
               </a-form-item>
             </a-col>
-            <a-col v-if="showSubApproveUser" :span="12">
+            <a-col v-if="showSubApproveUserSelector" :span="12">
               <a-form-item label="部门经办人" :labelCol="wideLabelCol" :wrapperCol="wideWrapperCol">
                 <j-select-user v-model:value="subApproveUser" :disabled="savingSubApproveUser" allow-clear />
               </a-form-item>
@@ -278,8 +278,7 @@
     bgXiSpeakFeedbackListWithDept,
     bgXiSpeakFeedbackDelete,
     saveBpmForm,
-    setProcessVariable,
-    updateDeptHandlerName,
+    saveSubApprove,
   } from '../BgXiSpeak.api';
   import { usePermission } from '/@/hooks/web/usePermission';
   import TaskHandleInnerContent from '/@/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue';
@@ -469,6 +468,14 @@
     Object.keys(mainForm).forEach((key) => {
       mainForm[key] = record[key] ?? '';
     });
+    // 从 approveInfo JSON 初始化当前部门的 isEnd 和 subApproveUser
+    const approveInfo = record.approveInfo;
+    const deptId = getCurrentUserDeptId();
+    if (approveInfo && deptId && approveInfo[deptId]) {
+      const detail = approveInfo[deptId];
+      isEnd.value = detail.isEnd ?? 0;
+      subApproveUser.value = detail.implWorker ?? '';
+    }
   }
 
   function getCurrentUserDeptId() {
@@ -482,6 +489,11 @@
     return departs.length === 1 ? departs[0]?.id || '' : '';
   }
 
+  function getCurrentAssignee() {
+    const userInfo = (userStore.getUserInfo || {}) as Record<string, any>;
+    return userInfo.username || '';
+  }
+
   async function loadFeedbackList() {
     const bpmProcessId = processInfo.value.processInstanceId;
     if (!mainForm.id || !bpmProcessId) {
@@ -577,11 +589,15 @@
 
   async function saveSubApproveUserVariable(options: { showSuccessMessage?: boolean } = {}) {
     const { showSuccessMessage = true } = options;
-    const processInstanceId = processInfo.value.processInstanceId;
     const isEndValue = String(isEnd.value);
     const usernameValue = normalizeUsernameList(subApproveUser.value);
-    if (!processInstanceId) {
-      createMessage.warning('流程实例ID不能为空');
+    const deptId = getCurrentUserDeptId();
+    if (!mainForm.id) {
+      createMessage.warning('主表ID不能为空');
+      return false;
+    }
+    if (!deptId) {
+      createMessage.warning('无法获取当前用户部门');
       return false;
     }
     if (isEndValue !== '1' && !usernameValue) {
@@ -591,20 +607,20 @@
 
     savingSubApproveUser.value = true;
     try {
-      const isEndResult = await saveProcessVariable('isEnd', isEndValue);
-      if (!isEndResult?.success) {
-        createMessage.warning(isEndResult.message || '保存失败');
-        return false;
+      const params: Record<string, any> = {
+        mainId: mainForm.id,
+        deptId,
+        isEnd: Number(isEndValue),
+      };
+      if (isEndValue === '1') {
+        params.implWorker = getCurrentAssignee();
+      } else {
+        params.implUserNameList = usernameValue.split(',').filter(Boolean);
       }
-
-      if (isEndValue !== '1') {
-        const subApproveUserResult = await saveProcessVariable('subApproveUser', usernameValue);
-        if (!subApproveUserResult?.success) {
-          createMessage.warning(subApproveUserResult.message || '保存失败');
-          return false;
-        }
-        // 同步更新 task_task 表的 deptHandlerName，供 XiSpeakFeedbackFlow.getImplDeptWorker 使用
-        updateDeptHandlerName({ processInstanceId, deptHandlerName: usernameValue }).catch(() => {});
+      const res = await saveSubApprove(params);
+      if (!res?.success) {
+        createMessage.warning(res?.message || '保存失败');
+        return false;
       }
       if (showSuccessMessage) {
         createMessage.success('保存成功');
@@ -618,16 +634,6 @@
     }
   }
 
-  function saveProcessVariable(varField: string, varVal: any) {
-    return setProcessVariable({
-      processInstanceId: processInfo.value.processInstanceId,
-      taskId: processInfo.value.taskId,
-      local: true,
-      varField,
-      varVal,
-    });
-  }
-
   function normalizeUsernameList(value: string) {
     return String(value || '')
       .split(',')