Lazy command-group registration must import the real command tree to render complete help. On macOS with NODE_USE_SYSTEM_CA=1, those imports start Node's system CA loader worker; natural shutdown can block in CleanupCachedRootCertificates while joining LoadSystemCACertificates.
Request the existing stream-flushed one-shot exit immediately after successful Commander help parsing, covering both CommanderError and normal-return plugin help without affecting leaf command execution.
