Covers installing fan-control.sh + systemd service (replacing iDRAC's
100% fan response to non-Dell GPUs), configuring iDRAC BIOS hard disk
drive sequencing via racadm, and the Linux-layer stagger-spinup service
as a safety net. Phases 11 and 12 stubbed as placeholders.
https://claude.ai/code/session_01U7bSqj83VPbMZ9L8LTYa41
