Copilot review round 3.
`done()` is first-caller-wins, and the render deadline stayed armed after
first paint. So a marker landing near `timeoutMs` let that timer fire
*inside* the survival window and settle the run as
child did not render "MCP Servers" within 15000ms
followed by an output tail that visibly contains "MCP Servers". A TUI that
is merely slow fails intermittently, with a diagnostic naming the one
thing that demonstrably did happen — the same wrong-attribution class this
PR exists to remove, and one that reads as flake.
First paint has happened; its deadline no longer has a question to ask, so
`onData` clears it at the moment the marker is observed.
Also hoists `renderTimer`'s declaration beside `surviveTimer`'s. It was a
`const` below both closures that clear it, safe only because `onData` and
`done` run from events rather than the synchronous body. That already held
for `done`; this fix adds a second reader, so the ordering is now stated
rather than relied upon.
The test paints at 250ms with timeoutMs 400 and surviveMs 400, so the
render deadline expires while the survival window is open — the exact
shape. Verified it fails against the module with the clearTimeout removed
and passes with it: a wider timeoutMs would have been green either way,
which is why the numbers are tight.
Signed-off-by: Cliff Hall <cliff@futurescale.com>
Signed-off-by: cliffhall <cliff@futurescale.com>
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