- `slow_task` sleeps through a helper that removes both listeners on
whichever outcome wins and returns early on an already-aborted signal.
`{ once: true }` detaches on the event firing, not on the waiter losing
interest, so the old loop left one listener per second attached and a
60s run tripped MaxListenersExceededWarning.
- Report the outcome on stderr. A successful cancel closes the stream the
result would travel on, so the tool's return value is undeliverable by
construction — the README now points at the server's terminal rather
than at a result panel that cannot show it.
- Drop a double cast the file's own next hunk shows is unnecessary, and a
floating observer promise whose assertion was false anyway: `postSend`
rethrows before awaiting the SSE wait, so the send rejects on abort
whether or not that wait was cancelled.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013hzwzS8UvBsr4yZm7o7sev
Signed-off-by: cliffhall <cliff@futurescale.com>
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