node_selector这里无需base64解码,ResourceBuilder.get_node_selector(node_selector)里面有解码逻辑，重复解码

https://github.com/alibaba/GraphScope/blob/613a4643fda78937ba4fef4f855b88533616d71e/coordinator/gscoordinator/cluster_builder.py#L96

Open coordinator/gscoordinator/cluster_builder.py around line 96 and inspect how node_selector is handled before ResourceBuilder.get_node_selector(). Confirm where decoding occurs, then verify that the selector is decoded only once and run the relevant coordinator or cluster-builder tests to confirm existing behavior remains intact.

Written by the indexing model from the issue text.