fix

backend/app/api/routes/documents.py

@@ -34,6 +34,7 @@ def _document_response(result: DocumentProcessResult) -> DocumentUploadResponse:
 @router.post("/upload", response_model=DocumentUploadResponse)
 async def upload_document(
     file: UploadFile = File(..., description="上传的文档文件"),
+    doc_id: str | None = Form(None, description="客户端预分配的文档ID，不传则自动生成"),
     doc_name: str | None = Form(None, description="文档名称"),
     regulation_type: str | None = Form(None, description="法规类型"),
     version: str | None = Form(None, description="文档版本"),
@@ -48,6 +49,7 @@ async def upload_document(
 
     try:
         result = get_document_command_service().upload_and_process(
+            doc_id=doc_id,
             file_name=file.filename,
             content=content,
             content_type=file.content_type or "application/octet-stream",