fix(APP): 操作确认改为5秒倒计时双重确认，杜绝误触

- 接收/驳回/转交/派发/保存记录/创建首道工序 确认按钮：首次点击进入5秒倒计时，期间再点=取消反悔，倒计时结束再点才执行
- 结束分支/撤回转交/删除记录/删除图片：改为自定义倒计时确认弹窗，替换 uni.showModal(APP端原生弹窗取消行为异常)
- 修复 canDeleteImage 权限误判(严格===只比username→宽松双向比较)，负责人不再看不到删图按钮
- 页面卸载清理定时器；操作失败增加错误提示消除静默

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

@@ -128,13 +128,8 @@ export default {
       uni.previewImage({ urls: fullUrls, current: index });
     },
     confirmDelete(rec) {
-      uni.showModal({
-        title: "删除记录",
-        content: "确定删除这条记录吗？",
-        success: (res) => {
-          if (res.confirm) this.$emit("action", { task: this.task, type: "deleteRecord", record: rec });
-        },
-      });
+      // 🚀 交给父页面统一做「双重确认倒计时」，避免原生 showModal 取消行为异常
+      this.$emit("action", { task: this.task, type: "deleteRecord", record: rec });
     },
     statusLabel(s) {
       const map = { PENDING: "待接收", WIP: "进行中", COMPLETED: "已完成", REJECTED: "已驳回", ARCHIVED: "已入库" };