run() now defaults to auto_end=True: the runner ends once every root worker has finished, so single-pipeline bots end naturally when their pipeline does and tests no longer need an explicit runner.end() call. Multi-worker bots whose helpers run forever still trigger shutdown via end() / cancel() from an event handler (typically on transport disconnect). Hosts that add and remove workers across many sessions can pass auto_end=False to keep the runner up.
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- Passing a worker to
PipelineRunner.run()is deprecated. Register the worker withPipelineRunner.add_workers()before callingrun()instead. Theworkerargument still works but emits aDeprecationWarningand will be removed in a future release.