[oddurs]

Problem

The debug ranking gate averaged twenty runs. On this Mac, routinely at load average 20–48, one busy moment pushed it over its 40 ms budget and the pre-push hook refused the push. Interleaved runs on unchanged main measured 37, 45, 14, 11, and 13 ms.

Approach

Time five batches of four runs and keep the fastest. Other work can only slow a batch down, so the fastest batch is the closest measurement of the code itself. The same twenty calls, the same 40 ms budget.

Look at sceptically

• This makes the gate more lenient towards intermittent slowness in the code itself, such as a cache that's cold on one batch in five. Ranking has no such state, so I don't think it matters here.
• A real 10× regression still fails: the fastest batch would then sit near 100 ms.

Checklist

• scripts/task check passes locally (three runs at load ~19: 9.2, 9.4, 12.8 ms)