- Draw the active SET DESTINATION path in orange on galaxy lanes and circle the destination star with a breathing ring
- On the current-system chart, circle the destination object when it is in this system, or show the route exit gate plus a dashed ship-to-gate line when the destination is elsewhere
- Carry `route` edge keys and `destinationId` through `buildGalaxySnapshot`, `mapChartSnapshot`, and `systemChartSnapshotFor` so views can render the course
- Add dev screenshot harnesses (route-shot, exit-gate-shot) and extend galaxy-map tests to cover route/destination flags
- Document the new visualization in PROJECT_NOTES.md and add a takeoff video asset
