PF1e (SRD Immediate Actions): "Using an immediate action on your turn is the same as using a swift action and counts as your swift action for that turn." The engine now tracks the acting combatant (_turn_actor); an immediate fired during its OWN turn sets swift_used_this_turn instead of immediate_used, so swift actions later in the turn's sequence are dropped (downgraded:immediate_swift) and no second immediate fires that round, while the next turn's swift stays free. Off-turn immediates keep consuming the next swift. The off-turn consumption test was retargeted to a true off-turn event and an in-turn test added; README updated (Actions immediates + budget classification).
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
ctan