Prerequisite Verification — parses each owned feat's prerequisites and evaluates them against actor state. Tristate result (pass / fail / unknown) with configurable severity for unknowns.
Build Completeness Check — verifies attribute boost slots, language counts, ancestry/heritage/background/class presence, feat slots (ancestry / class / skill / general / archetype / Free Archetype), skill increases, apex item, dual class, starting equipment, and 20+ other rules.