With no units the judge sent nothing and returned no extra answers, so
decide fell through to not_task: an out-of-catalog word like "weather"
hid the request link and filed its miss as not_task. The judge now asks
the extra questions alone when there are no candidates, and v2 passes
its name Noul and platform Choice, so an empty recall can be a gap. v1
still sends no request for an empty recall.
The bench records each case's embedding error, so a query that ran
without the semantic channel is visible in the run file.