The 6s per-file deadline + baseline=3981 were tuned to a fast dev machine; a
slower CI runner could time out a sub-second finite file, dropping total-pass
below baseline and flaking CI red. The deadline is now an env var (default 6
locally); CI sets it to 20s for headroom.
Characterized the 6 timeouts: identical pass/timeout counts at 6s and 20s, so all
6 are genuinely-infinite hangs (killed at any deadline) and the 227 finite files
finish well under 6s. So no baseline margin is needed — a generous CI deadline
removes the flake risk while preserving full regression sensitivity.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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