Runs pure turn.js combat, audits per round:
- rotation integrity, HP bounds, isActive consistency, turnOrder dup,
currentTurn valid, deathSave range, removeParticipant orphans,
conditions, undo support
100-round run: 128 violations all BUG-1/BUG-2 family (4 symptoms).
Clean: HP, isActive, deathSave, conditions, removal.
Exploratory (Math.random), not unit test. Unit tests lock known bugs.