让凭证数组与套餐作废任务进入可联调状态

Constraint: 后端订单套餐作废接口使用 /api/admin/order-package-invalidate-tasks，上传
  purpose 只能使用 attachment。
  Rejected: 继续提交逗号拼接凭证字符串 | 新提交路径必须使用 string[]，历史字符串只做读取归一化。
  Confidence: high
  Scope-risk: broad
  Directive: 新增订单套餐作废权限时需同时配置菜单 URL 与
  order_package_invalidate_task:create/detail 按钮权限。
  Tested: bun run build；development 真实后端联调上传、创建、列表、详情通过；复机接口未触发。
  Not-tested: 未逐一手工覆盖所有历史凭证数据、全部角色权限组合和所有文件扩展名预览

src/components/business/VoucherUpload.vue

@@ -50,7 +50,7 @@
 </template>
 
 <script setup lang="ts">
-  import { nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
+  import { nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
   import { ElMessage } from 'element-plus'
   import { genFileId } from 'element-plus'
   import { Close, Document, UploadFilled } from '@element-plus/icons-vue'
@@ -58,7 +58,7 @@
   import { StorageService } from '@/api/modules'
 
   interface Props {
-    modelValue?: string
+    modelValue?: string[] | string
     voucherName?: string
     maxCount?: number
   }
@@ -69,9 +69,9 @@
   })
 
   const emit = defineEmits<{
-    'update:modelValue': [value: string | undefined]
+    'update:modelValue': [value: string[]]
     'uploading-change': [value: boolean]
-    change: [value: string | undefined]
+    change: [value: string[]]
   }>()
 
   const rootRef = ref<HTMLElement>()
@@ -91,9 +91,8 @@
 
   const emitVoucherKeys = () => {
     const keys = Array.from(voucherFileKeyMap.values())
-    const value = keys.length ? keys.join(',') : undefined
-    emit('update:modelValue', value)
-    emit('change', value)
+    emit('update:modelValue', keys)
+    emit('change', keys)
   }
 
   const setUploadingCount = (count: number) => {
@@ -114,6 +113,26 @@
     }
   }
 
+  watch(
+    () => props.modelValue,
+    (value) => {
+      const keys = Array.isArray(value)
+        ? value
+        : value
+          ? value
+              .split(',')
+              .map((key) => key.trim())
+              .filter(Boolean)
+          : []
+
+      voucherFileKeyMap.clear()
+      keys.slice(0, getMaxCount()).forEach((key, index) => {
+        voucherFileKeyMap.set(index + 1, key)
+      })
+    },
+    { immediate: true }
+  )
+
   const revokeFileObjectUrl = (uid: number) => {
     const url = fileObjectUrlMap.get(uid)
     if (!url) return