feat: add download button to Tables/Images views, add task history delete/clear-all

web/frontend/src/views/Tasks.vue

@@ -62,6 +62,7 @@
             <template #prefix><el-icon><Search /></el-icon></template>
           </el-input>
           <el-button size="small" @click="loadData" :icon="Refresh">刷新</el-button>
+          <el-button size="small" type="danger" @click="clearAllTasks">清除全部</el-button>
         </div>
       </div>
 
@@ -88,10 +89,11 @@
             <span class="time-cell">{{ formatTime(row.created_at) }}</span>
           </template>
         </el-table-column>
-        <el-table-column label="操作" width="140" fixed="right">
+        <el-table-column label="操作" width="180" fixed="right">
           <template #default="{ row }">
             <el-button type="primary" link size="small" @click="showDetail(row)">详情</el-button>
             <el-button v-if="row.status === 'failed'" type="warning" link size="small" @click="retryTask(row)">重试</el-button>
+            <el-button type="danger" link size="small" @click="deleteTask(row)">删除</el-button>
           </template>
         </el-table-column>
       </el-table>
@@ -137,7 +139,7 @@
 
 <script setup lang="ts">
 import { ref, reactive, onMounted, onUnmounted } from 'vue'
-import { ElMessage } from 'element-plus'
+import { ElMessage, ElMessageBox } from 'element-plus'
 import { Timer, CircleCheck, CircleClose, Loading, Search, Refresh } from '@element-plus/icons-vue'
 import api from '../api'
 import { useDebounce } from '../composables/useDebounce'
@@ -214,6 +216,30 @@ async function copyPath(text: string) {
   }
 }
 
+async function deleteTask(row: any) {
+  try {
+    await ElMessageBox.confirm(`确定删除任务 #${row.id}？`, '确认删除')
+    await api.delete(`/tasks/${row.id}`)
+    ElMessage.success('已删除')
+    loadData()
+    loadStats()
+  } catch (err: any) {
+    if (err !== 'cancel') ElMessage.error(err.response?.data?.detail || '删除失败')
+  }
+}
+
+async function clearAllTasks() {
+  try {
+    await ElMessageBox.confirm('确定清除所有任务历史记录？此操作不可撤销。', '确认清除', { type: 'warning' })
+    await api.delete('/tasks')
+    ElMessage.success('已清除所有任务历史')
+    loadData()
+    loadStats()
+  } catch (err: any) {
+    if (err !== 'cancel') ElMessage.error(err.response?.data?.detail || '清除失败')
+  }
+}
+
 async function retryTask(row: any) {
   try {
     await api.post(`/tasks/${row.id}/retry`)

web/frontend/src/views/files/Images.vue

@@ -81,10 +81,11 @@
           <span class="time-text">{{ fmtTime(row.created_at) }}</span>
         </template>
       </el-table-column>
-      <el-table-column label="操作" width="320" fixed="right">
+      <el-table-column label="操作" width="370" fixed="right">
         <template #default="{ row }">
           <el-button link type="primary" size="small" @click="previewFile(row)">预览</el-button>
           <el-button link type="primary" size="small" @click="showDetail(row)">详情</el-button>
+          <el-button link type="primary" size="small" @click="downloadFile(row)">下载</el-button>
           <el-button link type="primary" size="small" @click="pipelineFile(row)">生成采购单</el-button>
           <el-button link type="primary" size="small" @click="ocrFile(row)">仅OCR</el-button>
           <el-button link type="danger" size="small" @click="deleteFile(row)">删除</el-button>

web/frontend/src/views/files/Tables.vue

@@ -78,10 +78,11 @@
           <span class="time-text">{{ fmtTime(row.created_at) }}</span>
         </template>
       </el-table-column>
-      <el-table-column label="操作" width="280" fixed="right">
+      <el-table-column label="操作" width="320" fixed="right">
         <template #default="{ row }">
           <el-button link type="primary" size="small" @click="previewFile(row)">预览</el-button>
           <el-button link type="primary" size="small" @click="showDetail(row)">详情</el-button>
+          <el-button link type="primary" size="small" @click="downloadFile(row)">下载</el-button>
           <el-button link type="primary" size="small" @click="processFile(row)">处理</el-button>
           <el-button link type="danger" size="small" @click="deleteFile(row)">删除</el-button>
         </template>
@@ -210,6 +211,15 @@ async function processFile(row: any) {
   }
 }
 
+async function downloadFile(row: any) {
+  const token = localStorage.getItem('token')
+  if (row.output_excel) {
+    window.open(`/api/files/download/output/${encodeURIComponent(row.output_excel)}?token=${token}`, '_blank')
+  } else if (row.result_purchase) {
+    window.open(`/api/files/download/result/${encodeURIComponent(row.result_purchase)}?token=${token}`, '_blank')
+  }
+}
+
 async function deleteFile(row: any) {
   try {
     await ElMessageBox.confirm(`确定删除 ${row.output_excel}？`, '确认')