The reaper hoist in the prior commit adds an extra
`asyncio.to_thread(_kb.reap_worker_zombies)` call at the top of every
dispatcher tick (before the per-board work). The existing
`test_gateway_dispatcher_disables_corrupt_board_without_traceback`
mocks `to_thread` with a 4-call cap that previously matched 2 full
dispatch ticks. With the reaper hoist each tick is now 3
`to_thread` calls instead of 2, so the cap is raised to 6 to preserve
the same number of dispatch ticks. The `connect == 5` assertion is
unchanged.
Also add the contributor's `steveonjava@gmail.com` to AUTHOR_MAP
alongside `steve@steveonjava.com` so contributor-audit passes for
both identities used across the salvaged commits.
Salvage follow-up for PR #32857.