fix upload

app/main.py

@@ -42,10 +42,8 @@ def upload(files: list[UploadFile]):
         for file in files:
             path = f"files/{file.filename}"
             try:
-                suffix = Path(file.filename).suffix
-                with NamedTemporaryFile(delete=False, suffix=suffix) as tmp:
-                    shutil.copyfileobj(file.file, tmp)
-                
+                with Path(path).open("wb") as destination:
+                    shutil.copyfileobj(file.file, destination)
             finally:
                 file.file.close()
     finally: