pipecat/changelog/3660.changed.md

• Moved interruption wait event from per-processor instance state to InterruptionFrame itself. Added InterruptionFrame.complete() to signal when the interruption has fully traversed the pipeline. Custom processors that block or consume an InterruptionFrame before it reaches the pipeline sink must call frame.complete() to avoid stalling push_interruption_task_frame_and_wait(). A warning is logged if completion does not happen within 2 seconds.