When a user launches with a 4090 or 5090, preflight now prints a single
hint line pointing at the matching FAQ entry. Caught one class of UX
gap where users land on launch.sh without reading the README + run into
unexpected ctx ceilings (4090) or miss the 32 GB-headroom story (5090).
Detection: greps `nvidia-smi -L` output for "RTX 4090" / "RTX 5090".
Quiet on 3090-only rigs. Pure-additive — no behavior change beyond the
extra echo lines.
Co-authored-by: noonghunna <[email protected]>
Co-authored-by: Claude Opus 4.7 (1M context) <[email protected]>