Leaflet CSS/JS assets are now loaded conditionally in shared headers/footers so map libraries are only included on pages that need them. For the QRB calculator dialog, Leaflet is loaded on demand in `common.js`, and the `newpath` map-rendering function was moved into the QRB view so the modal still works when global map scripts are skipped. Also adds a small HTMX updating indicator to the dashboard’s Today’s QSOs section.