The [IQ] switchboard
The rules-file [IQ] block that assigns a difficulty rung to each autonomous AI behavior, the per-house IQ scalar compared against it, and which of the ten shipped behaviors actually has a live gate. Verified: Tiberian Sun, Red Alert 2, Yuri's Revenge — identical mechanism.
House alliances — the diplomacy relation
How the engine decides whether two houses are allied, forms and breaks an alliance, and enforces the "can't ally your last enemy" rule and the AI coalition sweep. Verified: Tiberian Sun, Red Alert 2, Yuri's Revenge — with two documented divergences.