Root cause: clicking a taxiway selected it (blue highlight) then the same
DOM click re-fired on the map and cleared selection, so handles never stayed
visible and vertex drag could not run.
Leaflet only stops map re-fire when originalEvent._stopped is set; native
stopPropagation alone does not set that flag. Set _stopped, disable path
bubblingMouseEvents, and gate map clicks after feature clicks. Disable boxZoom
(blue rectangle). Cache-bust static module URLs (assets are go:embed).
Pin the enhanced map host to a definite viewport height and invalidate
Leaflet size on layout changes so OSM tiles fill the pane. Remove the
bottom apt/air text backup forms to reclaim console space.
