The WZDx daily summary + DM query count from traffic_events, but work
zones weren't landing there: wzdx rode the generic _delta_emit path,
which silent-seeds the seen-set and returns before the decider's INSERT
on the cold-start first poll, so the current zone set never persisted
(summary would count ~0). Add a dedicated _ingest_wzdx (mirroring the
fires ingest) that UPSERTs every current coalesced zone into
traffic_events each poll (persist-only, last_broadcast_at=NULL, no emit,
no broadcast) and reconciles zones that drop out of the feed (never wipes
on an empty/failed fetch). Per-event work-zone broadcast stays suppressed
(the decider's work_zone gate is untouched). Retargets 4 tests in
test_store_received_delta.py that used a fake 'wzdx' source to exercise
the generic gate onto a neutral routing name.
Co-authored-by: Matt Johnson <mj@k7zvx.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
