fix: move agent attachment download api (#15146)

### What problem does this PR solve?

move agent attachment download api to the correct route and update
frontend callers

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### Notes

- Move the attachment download endpoint from document routes to agent
routes.
- Update frontend download callers to use the agent attachment endpoint.
- Reuse the shared file response header helper instead of duplicating it
in `agent_api.py`.

web/src/components/document-download-button/index.tsx

@@ -1,6 +1,6 @@
 import { Button } from '@/components/ui/button';
 import { IDocumentDownloadInfo } from '@/interfaces/database/chat';
-import { downloadFile } from '@/services/file-manager-service';
+import { downloadAgentFile } from '@/services/file-manager-service';
 import { downloadFileFromBlob } from '@/utils/file-util';
 import { Download, FileText } from 'lucide-react';
 import { useCallback } from 'react';
@@ -20,7 +20,7 @@ export function DocumentDownloadButton({
     try {
       const ext =
         downloadInfo.filename.split('.').pop()?.toLowerCase() || 'bin';
-      const response = await downloadFile({
+      const response = await downloadAgentFile({
         docId: downloadInfo.doc_id,
         ext,
       });

web/src/components/next-message-item/group-button.tsx

@@ -8,7 +8,7 @@ import {
 import { useSetModalState } from '@/hooks/common-hooks';
 import { IRemoveMessageById } from '@/hooks/logic-hooks';
 import { AgentChatContext } from '@/pages/agent/context';
-import { downloadFile } from '@/services/file-manager-service';
+import { downloadAgentFile } from '@/services/file-manager-service';
 import { downloadFileFromBlob } from '@/utils/file-util';
 import {
   DeleteOutlined,
@@ -125,7 +125,7 @@ export const AssistantGroupButton = ({
             value="g"
             onClick={async () => {
               try {
-                const response = await downloadFile({
+                const response = await downloadAgentFile({
                   docId: attachment.doc_id,
                   ext: attachment.format,
                 });

web/src/services/file-manager-service.ts

@@ -13,7 +13,7 @@ const {
   getFile,
   moveFile,
   getDatasetDocumentFileDownload,
-  getDocumentFileDownload,
+  getAttachmentFileDownload,
 } = api;
 
 const methods = {
@@ -62,8 +62,8 @@ const fileManagerService = registerServer<keyof typeof methods>(
   request,
 );
 
-export const downloadFile = (data: { docId: string; ext: string }) => {
-  return request.get(getDocumentFileDownload(data.docId), {
+export const downloadAgentFile = (data: { docId: string; ext: string }) => {
+  return request.get(getAttachmentFileDownload(data.docId), {
     params: { ext: data.ext },
     responseType: 'blob',
   });

web/src/utils/api.ts

@@ -129,8 +129,6 @@ export default {
     `${restAPIv1}/datasets/${datasetId}/documents/${documentId}`,
   documentThumbnails: `${restAPIv1}/thumbnails`,
   getDocumentFile: `${restAPIv1}/documents`,
-  getDocumentFileDownload: (docId: string) =>
-    `${restAPIv1}/documents/${docId}/download`,
   documentUpload: (datasetId: string) =>
     `${restAPIv1}/datasets/${datasetId}/documents`,
   webCrawl: (datasetId: string) =>
@@ -223,6 +221,8 @@ export default {
     `${restAPIv1}/agentbots/${canvasId}/inputs`,
   prompt: `${restAPIv1}/agents/prompts`,
   cancelDataflow: (id: string) => `${restAPIv1}/tasks/${id}/cancel`,
+  getAttachmentFileDownload: (docId: string) =>
+    `${restAPIv1}/agents/${docId}/download`,
   downloadFile: `${restAPIv1}/agents/download`,
   testWebhook: (id: string) => `${restAPIv1}/agents/${id}/webhook/test`,
   fetchWebhookTrace: (id: string) => `${restAPIv1}/agents/${id}/webhook/logs`,