603240bf93
Work-in-progress route-builder checkpoint: - New RouteStatsBar and WaypointDetailPanel components. - EditMap / ImageDropzone / WaypointTable / builderStore updates. - Hoist the elevation gain/loss/range helpers out of build-hikes.ts into src/lib/hikes/elevation.ts so the builder and the build share one implementation. Also bundled here (same file, couldn't be split cleanly): build-hikes.ts now detects each hike's country at build time — 'CH' when a Swiss canton matched, otherwise an OSM/Nominatim reverse-geocode — and writes it to the manifest, feeding the new Kanton/Land filter.