794bcf7e

By: Ammar <ammar.nanjiani@gmail.com>

docs(adr): record the Steam Machine Jovian fork pin decision

ADR-015 covers replacing stock SteamOS with Jovian NixOS while PR #584 is
still unmerged, and why the pin is isolated as its own flake input so the
Steam Deck keeps chaotic's released Jovian.

Records the honest costs: an unreviewed branch that can move or be
deleted (which would break flake evaluation fleet-wide), "initial" only
meaning kernel plus firmware plus the AMD GPU flag, no HDMI-CEC because
the branch that restores it also drops firmware signature verification,
and default-on fan control and Valve Mesa forks inherited from the Deck.

Supersede this once PR #584 merges.
Codeberg

Total

5m51s

Time to Start Worker time Duration Time to finish Idle
Config 0s 2s 2s 2s 0s
Eval 2s 4m52s 4m52s 4m55s 0s
Build 4m55s 7m57s 56s 5m52s 0s
Suite 0s 12m52s 5m51s 5m52s 0s