feat(doclib): 增加批量设置分享接口并复用单文档写入逻辑。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/doclib.py

@@ -4,7 +4,13 @@ from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.core.doclib_upload_route import DoclibRoute
-from app.schemas.doclib import DeleteFilesBody, FolderCreateBody, FolderUpdateBody, ShareBody
+from app.schemas.doclib import (
+    BatchShareBody,
+    DeleteFilesBody,
+    FolderCreateBody,
+    FolderUpdateBody,
+    ShareBody,
+)
 from app.services.doclib_service import DoclibService
 from app.services.doclib_storage import download_document, upload_document
 
@@ -87,6 +93,11 @@ def delete_document_files(body: DeleteFilesBody, svc: DoclibService = Depends(se
     return success_response()
 
 
+@router.post('/web/doclib/files/batch-shares')
+def batch_share_documents(body: BatchShareBody, svc: DoclibService = Depends(service)):
+    return success_response(svc.set_shares_batch(body.ids, body.userIds))
+
+
 @router.get('/web/doclib/files/{file_id}')
 def document_detail(file_id: str, svc: DoclibService = Depends(service)):
     return success_response(svc.get_file(file_id))