refactor(plan): 替换 Taro.showActionSheet 为 NutUI ActionSheet 组件

将计划书多文件选择从原生 Taro.showActionSheet 迁移至
ProposalFileActionSheet 组件，支持长文件名换行显示和后续
样式扩展。usePlanView 暴露响应式 actionSheetVisible 等状态
供组件绑定，plan 与 message-detail 页面各挂载一份实例。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

@@ -21,6 +21,7 @@ declare module 'vue' {
     MaterialCard: typeof import('./src/components/cards/MaterialCard.vue')['default']
     NameInput: typeof import('./src/components/plan/PlanFields/NameInput.vue')['default']
     NavHeader: typeof import('./src/components/navigation/NavHeader.vue')['default']
+    NutActionSheet: typeof import('@nutui/nutui-taro')['ActionSheet']
     NutAvatar: typeof import('@nutui/nutui-taro')['Avatar']
     NutButton: typeof import('@nutui/nutui-taro')['Button']
     NutDatePicker: typeof import('@nutui/nutui-taro')['DatePicker']
@@ -40,6 +41,7 @@ declare module 'vue' {
     PlanFormContainer: typeof import('./src/components/plan/PlanFormContainer.vue')['default']
     PlanPopupNew: typeof import('./src/components/plan/PlanPopupNew.vue')['default']
     ProductCard: typeof import('./src/components/cards/ProductCard.vue')['default']
+    ProposalFileActionSheet: typeof import('./src/components/plan/ProposalFileActionSheet.vue')['default']
     RadioGroup: typeof import('./src/components/plan/PlanFields/RadioGroup.vue')['default']
     RichTextRenderer: typeof import('./src/components/RichTextRenderer.vue')['default']
     RouterLink: typeof import('vue-router')['RouterLink']

+<template>
+  <nut-action-sheet
+    v-model:visible="actionSheetVisible"
+    :title="sheetTitle"
+    cancel-txt="取消"
+    :menu-items="actionSheetMenuItems"
+    :close-on-click-overlay="true"
+    @choose="handleChooseFile"
+    @cancel="closeActionSheet"
+    @close="closeActionSheet"
+  />
+</template>
+
+<script setup>
+/**
+ * 计划书文件选择动作面板
+ *
+ * @description 多文件计划书统一使用 NutUI ActionSheet 展示，
+ *              以支持长文件名换行和后续样式扩展。
+ */
+import { computed } from 'vue'
+import { usePlanView } from '@/composables/usePlanView'
+
+const { actionSheetVisible, actionSheetMenuItems, handleChooseFile, closeActionSheet } = usePlanView()
+
+const sheetTitle = computed(() => {
+  const count = actionSheetMenuItems.value.length
+  return count > 0 ? `选择计划书文件 (${count}个)` : '选择计划书文件'
+})
+</script>
+
+<style lang="less" scoped>
+:deep(.nut-action-sheet__item) {
+  padding: 24rpx 32rpx;
+  text-align: left;
+  white-space: normal;
+  word-break: break-word;
+}
+
+:deep(.nut-action-sheet__item > view:first-child) {
+  font-weight: 500;
+  color: #1f2937;
+  white-space: normal;
+  word-break: break-word;
+  line-height: 1.5;
+}
+
+:deep(.nut-action-sheet__subdesc) {
+  margin-top: 8rpx;
+  line-height: 1.5;
+  color: #6b7280;
+  word-break: break-word;
+}
+</style>

@@ -10,7 +10,7 @@
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
 import { ref, reactive } from 'vue'
 import Taro from '@tarojs/taro'
-import { viewProposal } from '../usePlanView'
+import { usePlanView, viewProposal } from '../usePlanView'
 import { useFieldValueTransform } from '../useFieldValueTransform'
 import { useFieldDependencies } from '../useFieldDependencies'
 import { PLAN_FIELD_DEFINITIONS, FIELD_GROUPS, getFieldsByGroup } from '@/config/plan-fields'
@@ -90,6 +90,8 @@ describe('计划书模块集成测试', () => {
     })
 
     it('应该显示多文件选择弹框', async () => {
+      viewAPI.mockResolvedValue({ code: 1 })
+      const { viewProposal: openProposal, actionSheetVisible, actionSheetMenuItems, handleChooseFile } = usePlanView()
       const proposal = {
         id: 456,
         order_status: '7',
@@ -99,10 +101,17 @@ describe('计划书模块集成测试', () => {
         ]
       }
 
-      await viewProposal(proposal)
+      await openProposal(proposal)
+
+      expect(actionSheetVisible.value).toBe(true)
+      expect(actionSheetMenuItems.value).toHaveLength(2)
+      expect(actionSheetMenuItems.value[0].name).toBe('计划书A.pdf')
+
+      await handleChooseFile(actionSheetMenuItems.value[1], 1)
 
-      // 验证：显示选择弹框（Taro.showActionSheet）
-      expect(Taro.showActionSheet).toHaveBeenCalled()
+      expect(actionSheetVisible.value).toBe(false)
+      expect(Taro.showActionSheet).not.toHaveBeenCalled()
+      expect(viewAPI).toHaveBeenCalledWith({ i: 456 })
     })
 
     it('应该在计划书未生成时友好提示', async () => {

@@ -12,11 +12,18 @@
 */
 
 import Taro from '@tarojs/taro'
+import { ref } from 'vue'
 import { mapOrderStatus, getStatusText } from '@/config/constants/orderStatus'
 import { viewAPI } from '@/api/plan'
 import { useFileOperation } from './useFileOperation'
 import { canViewProposal, getProposalFiles } from '@/utils/proposalView'
 
+const actionSheetVisible = ref(false)
+const actionSheetMenuItems = ref([])
+let currentProposal = null
+let currentEmitError = null
+let currentOnViewSuccess = null
+
 export const viewProposal = async (proposal, callbacks = {}) => {
   const { beforeView, onViewSuccess, onViewError, onError } = callbacks
   const emitError = (error) => {
@@ -83,24 +90,18 @@ export const viewProposal = async (proposal, callbacks = {}) => {
     }
 
     const fileList = proposalFiles.map((file, index) => ({
-      text: file.file_name || `计划书 ${index + 1}`,
-      file
+      name: file.file_name || `计划书 ${index + 1}`,
+      subname: `文件 ${index + 1}`,
+      file,
+      proposalId: proposal.id,
+      index
     }))
 
-    Taro.showActionSheet({
-      itemList: fileList.map(item => item.text),
-      success: async (res) => {
-        if (res.tapIndex === undefined || res.tapIndex === null) return
-
-        const selectedFile = fileList[res.tapIndex]?.file
-        if (!selectedFile) return
-
-        const previewSuccess = await handleFileView(selectedFile, emitError)
-        if (previewSuccess) {
-          await markViewed(proposal, onViewSuccess)
-        }
-      }
-    })
+    currentProposal = proposal
+    currentEmitError = emitError
+    currentOnViewSuccess = onViewSuccess
+    actionSheetMenuItems.value = fileList
+    actionSheetVisible.value = true
   } catch (error) {
     const errorMessage = error?.message || '查看计划书失败，请重试'
     Taro.showToast({
@@ -111,6 +112,28 @@ export const viewProposal = async (proposal, callbacks = {}) => {
   }
 }
 
+export const closeActionSheet = () => {
+  actionSheetVisible.value = false
+  actionSheetMenuItems.value = []
+  currentProposal = null
+  currentEmitError = null
+  currentOnViewSuccess = null
+}
+
+export const handleChooseFile = async (item) => {
+  const selectedFile = item?.file
+  if (!selectedFile || !currentProposal) {
+    closeActionSheet()
+    return
+  }
+
+  const previewSuccess = await handleFileView(selectedFile, currentEmitError || (() => {}))
+  if (previewSuccess) {
+    await markViewed(currentProposal, currentOnViewSuccess)
+  }
+  closeActionSheet()
+}
+
 const handleFileView = async (file, emitError) => {
   if (!file?.file_url) {
     const errorMsg = '文件链接无效'
@@ -173,5 +196,9 @@ const markViewed = async (proposal, onViewSuccess) => {
 }
 
 export const usePlanView = () => ({
-  viewProposal
+  viewProposal,
+  actionSheetVisible,
+  actionSheetMenuItems,
+  handleChooseFile,
+  closeActionSheet
 })

@@ -96,6 +96,8 @@
 
     <!-- 错误/空状态 -->
     <nut-empty v-else description="未找到消息内容" image="error" />
+
+    <ProposalFileActionSheet />
   </view>
 </template>
 
@@ -103,6 +105,7 @@
 import { ref, computed } from 'vue'
 import { useLoad } from '@tarojs/taro'
 import NavHeader from '@/components/navigation/NavHeader.vue'
+import ProposalFileActionSheet from '@/components/plan/ProposalFileActionSheet.vue'
 import { detailAPI } from '@/api/news'
 import { useUserStore } from '@/stores/user'
 import { mockDetailAPI } from '@/utils/mockData'

@@ -129,6 +129,7 @@
 
     <!-- TabBar -->
     <!-- <TabBar current="" /> -->
+    <ProposalFileActionSheet />
   </view>
 </template>
 
@@ -140,6 +141,7 @@ import { mockPlanListAPI } from '@/utils/mockData'
 import NavHeader from '@/components/navigation/NavHeader.vue'
 import ListItemActions from '@/components/list/ListItemActions/index.vue'
 import SearchBar from '@/components/forms/SearchBar.vue'
+import ProposalFileActionSheet from '@/components/plan/ProposalFileActionSheet.vue'
 import { USE_MOCK_DATA } from '@/config/app'
 import { mapOrderStatus, getStatusText } from '@/config/constants/orderStatus'
 import { canViewProposal as canViewProposalRule } from '@/utils/proposalView'