feat: rag folder scan support

backend/apps/web/routers/documents.py

@@ -96,6 +96,10 @@ async def get_doc_by_name(name: str, user=Depends(get_current_user)):
 ############################
 
 
+class TagItem(BaseModel):
+    name: str
+
+
 class TagDocumentForm(BaseModel):
     name: str
     tags: List[dict]