Import active NaPTAN stops into a local SQLite spatial index, including conversion of British National Grid coordinates. Add local searches, shareable stop links, source details and transport mode colours while retaining OSM route lookup by ATCO code.
Closes#1
- Refactor core.py: replace sys.exit() calls with OsmError exceptions
so the library is safe to use from Flask and other callers
- Add fetch_sibling_routes and fetch_route_master_routes to core.py
- Add Flask web frontend (web/app.py, templates, static assets):
- Map view with Leaflet; full route drawn in grey on load
- Sidebar stop list; active-slot UX for From/To selection
- Segment preview and download (full route or selected segment)
- Include-stops toggle applied client-side
- Bookmarkable URLs: GET /<relation_id>
- Clear selection button
- Other directions panel (sibling routes from same route_master)
- route_master handling: draws all member routes in colour on map
with links to each individual direction
- Add SVG favicon
- Add py.typed marker; add .gitignore
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
