post
https://example.com/api/v1/mobile/position/
Update mobile device position and return nearby threats.
Request body: { "lat": 34.05, "lon": -118.25, "session_id": "optional-session-id", "heading": 180, // optional device heading "radius_nm": 25 // optional threat radius }
Returns: { "session_id": "generated-or-provided-session-id", "position": {"lat": 34.05, "lon": -118.25}, "threats": [...], "timestamp": "2024-01-01T00:00:00Z" }