📍 Real-time Location Tracker

Node.js/Express + Socket.IO real-time location tracking app. Server broadcasts GPS coordinates from all connected browser clients to all others via WebSocket. Frontend uses Leaflet.js with OpenStreetMap tiles to display markers for each connected user; markers update in real-time as clients move, and are removed on disconnect. Also collects device metadata (user agent, screen resolution, battery level, hardware concurrency, timezone). Map auto-centers to fit all visible markers with a manual center button. 3 commits — initial commit, LICENSE, README.