feat: P0-2 订单BOM计算单+Excel导出(openpyxl)

frontend/src/api/index.ts

@@ -41,3 +41,13 @@ export async function api<T = any>(method: string, url: string, body?: object):
   const res = await http.request({ method, url, data: body })
   return res.data.data as T
 }
+
+/** 下载二进制文件（自动带 token），filename 为保存文件名 */
+export async function apiDownload(url: string, filename: string): Promise<void> {
+  const res = await http.get(url, { responseType: 'blob' })
+  const link = document.createElement('a')
+  link.href = URL.createObjectURL(res.data)
+  link.download = filename
+  link.click()
+  URL.revokeObjectURL(link.href)
+}