I need a lightweight MVP that lets parents follow their child’s school van in real-time from any iOS or Android browser. The flow is simple: • A driver’s phone feeds live GPS data. • Parents open a small PWA, enter their mobile number, receive a one-time password, and see the van’s position on a map. • When the vehicle is approaching their stop—or the child is marked as on-board or dropped off—the system fires both an SMS and a push notification. I’m fine with any modern stack as long as it delivers: 1. A responsive webapp/PWA optimised for mobile. 2. Real-time location updates (WebSockets or similar) with a clean map UI. 3. OTP sign-in tied to the parent’s phone number. 4. Integrated Twilio (or comparable) SMS plus browser push notifications. 5. A minimal driver view or API endpoint to set “boarded” and “dropped” status. Keep everything lightweight; no bloated frameworks or heavy user management. A short setup guide and deploy script will be enough for this phase.