refactor(admin): 用已安装的 file-saver/fast-deep-equal 替代手写下载与 JSON 比较

apps/admin/src/components/ImportWizard/ImportWizardModal.tsx

@@ -35,6 +35,7 @@ import {
   importErrorReportUrl,
   previewImportStep,
 } from '../../api/imports';
+import { saveAs } from 'file-saver';
 import {
   STEP_FIELDS,
   type ImportPreviewResult,
@@ -101,12 +102,7 @@ async function downloadErrorReport(runId: string, stepKey?: ImportStepKey): Prom
   });
   if (!response.ok) throw new Error('错误报告下载失败');
   const blob = await response.blob();
-  const url = URL.createObjectURL(blob);
-  const anchor = document.createElement('a');
-  anchor.href = url;
-  anchor.download = `导入错误报告-${runId.slice(0, 8)}.csv`;
-  anchor.click();
-  window.setTimeout(() => URL.revokeObjectURL(url), 60_000);
+  saveAs(blob, `导入错误报告-${runId.slice(0, 8)}.csv`);
 }
 
 export const ImportWizardModal: React.FC<ImportWizardModalProps> = ({