update slot resume pointers for step 488

slots/3/latest.json

@@ -1 +1 @@
-{"worker_id": "slot:3", "checkpoint": "slots/3/checkpoint-490", "step": 490, "updated_at": 1776388027}
+{"worker_id": "slot:3", "checkpoint": "slots/3/checkpoint-488", "step": 488, "updated_at": 1776389122}