slurm.{enabled,cluster_name,controller,nodes,lent,partition} in the cluster's
settings, checked; internal/slurm writes slurm.conf (configless), gres.conf
and cgroup.conf from the nodes' slurmd -C lines and GPUs, derives the munge
key from a cluster secret, and reads scontrol and version output.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>