Switch logging library to match bundle-lib

Switch logging library to match bundle-lib: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). We currently use go-logging throughout the broker, but our main dependency bundle-lib uses logrus. This means the broker's process emits two visually different log streams — one…

The task

We currently use go-logging throughout the broker, but our main dependency bundle-lib uses logrus. This means the broker's process emits two visually different log streams — one format/structure from our own packages and another from anything bundle-lib logs — which makes the…

Part of XiaomiMiMo/MiMo-V2.6-RL-oss.