Sub-stops, Camp & Charge, and privacy overhaul
- Nest sub-stops under any waypoint — nearby EV chargers, restaurants, and other POIs appear as children of a main stop without affecting drive times or budget
- Camp & Charge integration automatically finds nearby EV chargers for campground and park waypoints
- Drag-and-drop now shows a compact pill ghost and a colored drop indicator instead of the browser default
- State names appear below waypoint titles in the sidebar and on shared trip pages
- "Save a copy" button on shared trip pages lets logged-in visitors clone the trip in one click
- City-town waypoints now use geocoded city center coordinates for all non-owner views — residential addresses are never exposed on share pages, OG images, or collaborator maps