fix: 移动端 formatUserName 挂载到 methods,修复流转树渲染报错

- Vue2 Options API 中 import 的函数不暴露给模板,需挂到 methods
- FlowTree/TaskTreeNode 补 formatUserName 方法

track-uniapp/src/pages/scan/components/FlowTree.vue

@@ -35,7 +35,7 @@
 </template>
 
 <script>
-import { formatUserName } from "../../../utils/format";
+import { formatUserName as fmtUserName } from "../../../utils/format";
 
 export default {
   name: "FlowTree",
@@ -58,6 +58,10 @@ export default {
     },
   },
   methods: {
+    // Vue2 Options API 中 import 的函数需挂到 methods 才能被模板访问
+    formatUserName(userId) {
+      return fmtUserName(userId);
+    },
     statusLabel(s) {
       const map = { PENDING: "待接收", WIP: "进行中", COMPLETED: "已完成", REJECTED: "已驳回", ARCHIVED: "已入库", OUTBOUND: "已出库" };
       return map[s] || s;

track-uniapp/src/pages/scan/components/TaskTreeNode.vue

@@ -86,7 +86,7 @@
 
 <script>
 import { getBaseUrl } from "../../../utils/request";
-import { formatUserName } from "../../../utils/format";
+import { formatUserName as fmtUserName } from "../../../utils/format";
 
 export default {
   name: "TaskTreeNode",
@@ -147,6 +147,10 @@ export default {
       const map = { PENDING: "待接收", WIP: "进行中", COMPLETED: "已完成", REJECTED: "已驳回", ARCHIVED: "已入库" };
       return map[s] || s;
     },
+    // Vue2 Options API 中 import 的函数需挂到 methods 才能被模板访问
+    formatUserName(userId) {
+      return fmtUserName(userId);
+    },
     statusColor(s) {
       switch (s) {
         case "PENDING": return "s-yellow";