fix: 增加下载完成提示弹窗

frontend/src/components/DatabasePanel.vue

@@ -231,6 +231,7 @@ import {
 
 import { apiGet, apiPost, download } from '../api/client';
 import type { ApiMessage, DatabaseInfo, TableData, TableInfo } from '../types';
+import { showDownloadCompleteDialog } from '../composables/downloadFeedback';
 import { resetPageHeader, setPageHeader } from '../composables/pageHeader';
 
 type RowData = Record<string, unknown>;
@@ -483,14 +484,18 @@ async function downloadSelectedCsv() {
   if (!selectedCsvTable.value) return;
   if (downloadingFormat.value) return;
 
+  const filename = `${selectedCsvTable.value}.csv`;
   downloadingFormat.value = 'csv';
   try {
-    await download(
+    const completed = await download(
       '/api/download',
       { table_name: selectedCsvTable.value, format: 'csv' },
-      `${selectedCsvTable.value}.csv`
+      filename
     );
-    csvDialogVisible.value = false;
+    if (completed) {
+      csvDialogVisible.value = false;
+      showDownloadCompleteDialog(dialog, filename);
+    }
   } catch (error) {
     message.error(error instanceof Error ? error.message : '导出失败');
   } finally {
@@ -503,13 +508,17 @@ async function downloadSelectedXlsx() {
   if (downloadingFormat.value) return;
 
   downloadingFormat.value = 'xlsx';
+  const filename = selectedXlsxTables.value.length === 1 ? `${selectedXlsxTables.value[0]}.xlsx` : 'tables.xlsx';
   try {
-    await download(
+    const completed = await download(
       '/api/download',
       { table_names: selectedXlsxTables.value, format: 'xlsx' },
-      selectedXlsxTables.value.length === 1 ? `${selectedXlsxTables.value[0]}.xlsx` : 'tables.xlsx'
+      filename
     );
-    xlsxDialogVisible.value = false;
+    if (completed) {
+      xlsxDialogVisible.value = false;
+      showDownloadCompleteDialog(dialog, filename);
+    }
   } catch (error) {
     message.error(error instanceof Error ? error.message : '导出失败');
   } finally {

frontend/src/components/HistoryPanel.vue

@@ -100,6 +100,7 @@ import { CopyOutline, DownloadOutline, FileTrayOutline, RefreshOutline, TrashOut
 
 import { apiGet, apiPost, download as downloadFile } from '../api/client';
 import type { CacheSize, HistoryDetail, HistoryRecord } from '../types';
+import { showDownloadCompleteDialog } from '../composables/downloadFeedback';
 import { resetPageHeader, setPageHeader } from '../composables/pageHeader';
 
 type LogLevel = 'default' | 'info' | 'success' | 'warning' | 'error';
@@ -184,8 +185,11 @@ async function downloadHistory(record: HistoryRecord) {
 
   downloadingRecordId.value = record.id;
   try {
-    await downloadFile('/api/history/download', { record_id: record.id }, `${record.id}.zip`);
-    message.success('历史数据下载已开始');
+    const filename = `${record.id}.zip`;
+    const completed = await downloadFile('/api/history/download', { record_id: record.id }, filename);
+    if (completed) {
+      showDownloadCompleteDialog(dialog, filename);
+    }
   } catch (error) {
     message.error(error instanceof Error ? error.message : '下载历史数据失败');
   } finally {

frontend/src/components/SettingsPanel.vue

@@ -312,11 +312,12 @@
 
 <script setup lang="ts">
 import { computed, onBeforeUnmount, onMounted, reactive, ref } from 'vue';
-import { useMessage, type SelectOption } from 'naive-ui';
+import { useDialog, useMessage, type SelectOption } from 'naive-ui';
 import { CloseOutline, CloudDownloadOutline, CloudUploadOutline } from '@vicons/ionicons5';
 
 import { apiGet, apiPost, downloadGet, upload } from '../api/client';
 import type { ApiMessage, AppConfig, HistoryRetentionConfig, RemoteDataConfig } from '../types';
+import { showDownloadCompleteDialog } from '../composables/downloadFeedback';
 import { resetPageHeader, setPageHeader } from '../composables/pageHeader';
 
 interface ExtractFieldConfig {
@@ -327,6 +328,7 @@ interface ExtractFieldConfig {
 }
 
 const message = useMessage();
+const dialog = useDialog();
 const configInput = ref<HTMLInputElement | null>(null);
 const configUpdate = ref('');
 const loading = ref(false);
@@ -661,7 +663,11 @@ async function changePassword() {
 
 async function downloadConfig() {
   try {
-    await downloadGet('/api/config/download', 'Configure.json');
+    const filename = 'Configure.json';
+    const completed = await downloadGet('/api/config/download', filename);
+    if (completed) {
+      showDownloadCompleteDialog(dialog, filename);
+    }
   } catch (error) {
     message.error(error instanceof Error ? error.message : '下载配置失败');
   }