{"type": "FeatureCollection", "_meta": {"__meta__": "synthetic", "disclaimer": "Synthetic demo data inspired by real Baltic geography, MMSI/OUI conventions, and infrastructure. Not real observations.", "dataset": "s6-drone-swarm/aoi", "version": "1.0"}, "features": [{"type": "Feature", "properties": {"featureId": "s6-aoi", "name": "S6 Area of Interest", "note": "Drone swarm fan: ship anchor + 6 coastal targets"}, "geometry": {"type": "Polygon", "coordinates": [[[25.0, 59.85], [27.7, 59.85], [27.7, 60.45], [25.0, 60.45], [25.0, 59.85]]]}}]}