Nine mutations (one no-op control, eight rule-breaking) against
PowerBus.AllocateTiers and EquippedItem's tier-seeding guard: tier walk
order, committing a fed tier's grant before the next tier is considered,
proportional-within-tier rationing, an empty tier reading as met rather than
starved, allocating against TotalGrant rather than raw TotalDemand, remaining
vs. the original total (the no-leak boundary), reading the item's live
stored tier every Step, and never re-seeding a kind default once set. All
nine behave as declared against PowerTierTests.cs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>