A companion with no GPS lock advertises latitude and longitude both zero.
Contact.has_location treats that as located, so gather_markers plotted the
node at null island in the mid-Atlantic. The default frame (fraction=0.5)
trims the far outlier away, hiding it — but filtering the find down to that
one node and pressing Enter frames only it, dropping the whole view onto open
ocean: a screen of solid dark water fill that reads as all black.
Share the 0/0 guard _self_marker already applied to our own node with the
contact and heard-node markers, so a both-near-zero fix counts as no fix at
all and never reaches the map.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 4.8
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