fix linter failures

backend/app/api/assistants.py

@@ -94,7 +94,9 @@ async def delete_assistant(
     assistant = await storage.get_assistant(user["user_id"], aid)
     if not assistant:
         raise HTTPException(status_code=404, detail="Assistant not found")
-    if not assistant.get('public') and assistant.get('user_id') != user["user_id"]:
-        raise HTTPException(status_code=403, detail="Unauthorized to delete this assistant")
+    if not assistant.get("public") and assistant.get("user_id") != user["user_id"]:
+        raise HTTPException(
+            status_code=403, detail="Unauthorized to delete this assistant"
+        )
     await storage.delete_assistant(user["user_id"], aid)
     return {"status": "ok"}

backend/app/storage.py

@@ -212,16 +212,10 @@ async def delete_thread(user_id: str, thread_id: str):
 
 
 async def delete_assistant(user_id: str, assistant_id: str):
-    """Delete an assistant by ID.
-    
-    Args:
-        user_id: The user's ID.
-        assistant_id: The assistant's ID.
-        
-    """
+    """Delete an assistant by ID."""
     async with get_pg_pool().acquire() as conn:
         await conn.execute(
             "DELETE FROM assistant WHERE assistant_id = $1 AND user_id = $2",
             assistant_id,
             user_id,
-        )
+        )