A pin's position is generalised, so it does not tell a reader the locality or where a group is
centred.
- pins.sharedPoint in all 11 locales and ApproxPinNote.vue's fallback: the groups sharing the point
are named and counted ("{n} groups share this dot"); the locality claim is gone.
- keyCities map.note, map.sheetNote and list.caveat.row in all 11 locales: a cluster is of
people-group pins, not centroids, and each pin marks a people group, not a town.
- The key-cities and languages-per-city caveats in build-tabulator-tables.mjs and in every committed
copy of those two tables (only that one field changes), derive-city-candidates.mjs's caveat, and
the matching comments in key-cities, name-clusters and the poster generator.
- check-approx-pin-note's pass line no longer calls pins localities. Two UI-strings baseline entries
whose strings no longer exist in their files are dropped.