feat: Enhance track model and import functionality

- Added new fields to TrackModel: status, is_bidirectional, and coordinates.
- Updated network service to handle new track attributes and geometry extraction.
- Introduced CLI scripts for importing and loading tracks from OpenStreetMap.
- Implemented normalization of track elements to ensure valid geometries.
- Enhanced tests for track model, network service, and import/load scripts.
- Updated frontend to accommodate new track attributes and improve route computation.
- Documented OSM ingestion process in architecture and runtime views.

docs/architecture.md

@@ -100,6 +100,7 @@ The system interacts with:
 
 - Browser-native implementation for broad accessibility
 - Spatial database for efficient geographical queries
+- Offline-friendly OSM ingestion pipeline that uses dedicated CLI scripts to export/import stations and tracks before seeding the database
 - Modular architecture allowing for future extensions (e.g., multiplayer)
 
 ## 5. Building Block View