check:maplibre-drops went red on gospel-resources/resources-map and the new
gospel-dashboard leaf: layers.gr-pins.paint.circle-sort-key: unknown property.
circle-sort-key is a LAYOUT property. Mapbox tolerates it in `paint`; MapLibre
rejects the whole layer for one misplaced property and does NOT throw — so under
the keyless engine all 12,379 dots were absent while the page still rendered its
basemap, its choropleth and its legend, and looked fine. That is the same defect
that cost all-people-groups its pins, so the fix is the same: move the key into
`layout` and leave the z-order comment with it, since the reason (a group with
nothing found must win the z-fight) is about the sort, not about paint.
MEASURED after, both engines: gr-pins present, circle-sort-key in layout, pins
drawn. Screenshot read on maplibre — dots and choropleth both there.
check:maplibre-drops PASS 17/17 (it was 15 ok / 2 dropping).
The gate earned its keep here: this arrived with incoming work, not with mine,
and nothing in the page's own appearance would have told anyone.