b36f5644d3
The driver stamps DateTime.UtcNow at init and again per read pass; under CPU contention both land in the same tick, so the strict greater-than assertions flaked (reproduced 1/40 under load, sibling test A_cancelled_pass_still_flushes... failed identically with equal timestamps). Test-only race; no production defect. Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe