- Rows in each rover-location group are now phx-click handlers that
navigate to /path with source (rover-loc as 10-char Maidenhead grid),
destination (callsign > grid > coords), band, and rover/station
heights pre-filled — one click takes you to a ready-to-compute Path
Calculator screen.
- Station label now shows "AA5C · EM12kp" when both callsign and grid
resolved, instead of falling back to lat/lon. Bare-grid and
bare-coord stations keep their existing labels.
- Group heading uses Maidenhead.from_latlon(lat, lon, 10) so the
10-char grid is shown in full instead of being truncated to 6
characters.