Three tiers (must-do / round-out / large lifts), plus a "what I'd
skip" section calling out things from Tinkerbell and Bootimus that
don't pull their weight at PXEForge's scale (custom DHCP server,
pluggable backend abstraction, LLM-translated UI strings).
The big-ticket Tier-1 item is the real-hardware validation matrix —
everything currently passes CI tests but nothing has been booted by
real firmware yet.
