Archive completed changes and sync their delta specs to main:
- wahoo-import: new wahoo-import spec, updated journal-auth and account-settings
- journal-route-previews: new route-preview spec, updated map-display and route-management
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Route/activity list pages: map thumbnails with route drawn on OSM tiles
- Route/activity detail pages: interactive Leaflet map with zoom controls
- Server: expose GeoJSON from PostGIS via ST_AsGeoJSON (simplified for lists)
- RouteMapThumbnail component: shared, supports thumbnail and interactive modes
- Placeholder shown for routes/activities without geometry
- Archive journal-route-previews change, sync specs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
