- map-zones type gains territory and country border (informational political
boundaries that never gate placement, default fills amber 0.1 / violet 0.06)
- map-roads labelVisible is tri-state: unset means auto, where paved roads
always label and dirt/trail only label at 4 m/px or finer (roadLabelShown)
- migration clears the old implicit label default on non-paved roads
- new pure snapping lib: findSnap (vertices own their neighborhood, edges must
be twice as close), closestPointOnSegment, segmentMidpoints
- tests for label angles, tri-state rule, snapping, political zones
Z8MB1E
cc0a7facd0