`deadline` is whole seconds from `date +%s`. A run that starts just
before a second boundary reaches the deadline after the first probe and
one `sleep 1`, so the gate correctly gives up after one probe while the
test demanded two. With a stubbed clock (1000, 1000, 1002) the gate
probes once and prints `deadline of 2s reached`. The deadline message
already proves the pending migration held the entrypoint back; require
at least one probe.
Reported by CodeRabbit on #979.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5.5
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