fix(core): use CreatedByRole enum for role consistency (#9607)

api/core/rag/extractor/word_extractor.py

@@ -18,6 +18,7 @@ from core.rag.extractor.extractor_base import BaseExtractor
 from core.rag.models.document import Document
 from extensions.ext_database import db
 from extensions.ext_storage import storage
+from models.enums import CreatedByRole
 from models.model import UploadFile
 
 logger = logging.getLogger(__name__)
@@ -109,9 +110,10 @@ class WordExtractor(BaseExtractor):
                     key=file_key,
                     name=file_key,
                     size=0,
-                    extension=image_ext,
-                    mime_type=mime_type,
+                    extension=str(image_ext),
+                    mime_type=mime_type or "",
                     created_by=self.user_id,
+                    created_by_role=CreatedByRole.ACCOUNT,
                     created_at=datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None),
                     used=True,
                     used_by=self.user_id,