refactor: replace user_id with workspace_id in Brain class

core/quivr_core/brain/brain.py

@@ -116,13 +116,13 @@ def __init__(
         vector_db: VectorStore | None = None,
         embedder: Embeddings | None = None,
         storage: StorageBase | None = None,
-        user_id: UUID | None = None,
+        workspace_id: int | None = None,
         chat_id: UUID | None = None,
     ):
         self.id = id
         self.name = name
         self.storage = storage
-        self.user_id = user_id
+        self.workspace_id = workspace_id
         self.chat_id = chat_id
         # Chat history
         self._chats = self._init_chats()
@@ -539,7 +539,7 @@ async def ask_streaming(
 
         full_answer = ""
         metadata = {
-            "langfuse_user_id": str(self.user_id),
+            "langfuse_user_id": str(self.workspace_id),
             "langfuse_session_id": str(self.chat_id),
         }
         async for response in rag_instance.answer_astream(