The brief's gate ('Human or Zuul draws nothing, every other species draws')
is incomplete in two places, found by reading FUN_00820af0 before touching a
guest: species 1 (Hiver) short-circuits too, and the ROUTE OWNER's species is
a gate of its own. The species enum is read from the InitTable jump table as
bytes: 0 Human, 1 Hiver, 2 Tarkas, 3 Liir, 4 _NPC, 5 Zuul, 6 Morrigi.
Corpus counted against the predicate (rule 28 practice 5): 0 of 30. 24 saves
hold a Tarka AI - a drawing species - but tscr is 253 in every one, so the AI
has no Commerce Raiding and never rolls. The workload has to be built.
Tarkas chosen: the tech data gives it a 100% path to CCC_ComRaid via
CCC_FTLEcon, where Hiver has 0% on both edges.