The Challenge line says 1832 worked against 1554 confirmed and stops there —
278 band-slots waiting for a card with nothing pointing at them. Every existing
filter works per REFERENCE, so an entity confirmed on 20 m answers 'confirmed'
and its unconfirmed 15 m contact stays invisible.
The new filter keeps the references holding at least one such slot, and the
count beside the reference total is the gap itself, recomputed over whatever the
other filters left on screen and over the bands actually displayed — so it
always adds up to the columns in front of the operator.
rouggy
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