- Enrich BRouter response with per-point 3D coordinates and segment boundary
tracking (EnrichedRoute interface)
- ColoredRoute component: plain, elevation gradient (green→yellow→red), and
surface color modes with invisible wide polyline for click targeting
- Click-to-split: click on route polyline inserts waypoint at nearest point,
mapped to correct segment via boundary indices
- MidpointHandles: draggable CircleMarkers at route segment midpoints for
reshaping, hidden below zoom 12, opaque on hover
- Color mode toggle (select) synced via Yjs routeData
- i18n keys for color mode labels (en + de)
- Unit tests for segment boundary tracking (13 tests)
- E2E tests for enriched route response and color mode toggle
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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