A siege engine switches to whoever damages it, player or pet, even when
it already has a target. Pre-roll melee retaliation, harmful-power
direct aggro (which also fires on misses) and Taunt no longer change a
siege engine's target. The attack timer is untouched, so a switched
engine still waits for its next cycle before firing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>