Complete Planner UI: profile selector, elevation chart, GPX export
- ProfileSelector: dropdown synced via Y.Map, triggers route recompute
(Hiking, Cycling fast/safe, Shortest, Car profiles)
- ElevationChart: canvas-based elevation profile extracted from BRouter
GeoJSON, shows min/max elevation and distance
- ExportButton: generates GPX from current waypoints + route track,
downloads as route.gpx
All Groups 5 + 6 tasks complete.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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