The user asked specifically to confirm this: a driver who DNS'd in one
qualifying heat but raced normally in others must still be fully
counted across all of them, not dropped. Traced through the fix
(buildQualifyingStandings backfills a DNS row per finished heat,
accumulating into the same per-driver entry across every heat they're
in) and confirmed it already handles this correctly - added a test
that exercises exactly this scenario (DNS in heat 1, wins heat 2 and
3) to lock it in, since this specific multi-heat aggregation path had
no prior coverage.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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