Why it matters

Every skill runs folio check before it commits, and continuous integration runs it on every push. If the gate takes long enough to notice, agents and people start to skip it, and the promise that nothing reaches a reader unchecked goes with it.

What would settle it

The median wall-clock time of folio check over repeated runs on this library, on one machine, against the two-second line. A median under it answers yes for this library at its present size; a median over it answers no.

What would make us drop it

Timings that swing so widely from run to run on one machine that a median says nothing, or a gate so fast on every library we have that the question stops mattering.

Answer

Yes, at its present size: the median was well under the line (R-1). The smaller sample library was no faster (R-2), so at this scale start-up likely dominates, and the question is worth asking again once the library is several times larger.