10K+ HRRR-pending contacts were starving the 200-ish NARR candidates
out of the 500 per-run slot each 30 min because NARR candidates sort
last by the :hrrr_status priority. Drop the cap so every eligible
contact gets enqueued on each cron run; queue concurrency still paces
the actual fetches. Worker keeps supporting an explicit "limit" arg
for ad-hoc runs and tests.
Contacts whose weather/hrrr/terrain/iemre status has been :queued for
more than 3 days (144 cron cycles) are flipped to :unavailable. The
set_enrichment_status!/3 helper is a no-op when the status is unchanged,
so a stuck row retains a stale updated_at — which is exactly the signal
we need for 'the cron has already tried and the data doesnt exist
upstream' (dead ASOS station, pre-2014 HRRR, out-of-grid IEMRE). Clears
~1,492 pre-existing stuck contacts and stops them from churning the
backfill queue.
The three BackfillEnqueueWorkerTest cases were timing out because the
default types list includes :era5, which cascades through inline Oban
into Era5Client.poll_and_download where Process.sleep blocks for the
full 60s test timeout. Era5Client uses bare Req.get with no plug hook,
so it can't be stubbed via Req.Test the way the other clients are. Pass
explicit non-ERA5 types in the three affected cases — ERA5 has its own
coverage and these tests don't assert anything era5-specific.
Also replace two `length(results) > 0` checks in asos_nudge_test with
`results != []` to silence credo warnings.
