Adding a node in BCM (performance lab)

This is specifically tested in the performance-based lab. Steps:

1. Connect the new node to the provisioning network
2. Power on the node — it will PXE boot
3. BCM auto-detects the new node via DHCP
4. In cmsh: assign the node to the correct category (e.g., gpu)
5. Set node state to provisioning
6. BCM pushes the OS image and configures the node
7. Verify node health and confirm it appears in Slurm (sinfo)

cmsh> device set <node> category gpu
cmsh> device set <node> state provisioning
cmsh> device commit