Library QR Attendance Tracking Integration

I already have a production-ready library management platform running on a Next.js front end with a NestJS API, containerised with Docker and deployed on AWS (files are stored on S3). The missing piece is a compact student-tracking module that:

• scans a student’s unique QR code on entry and exit
• records the exact timestamps, the library section they visit, and calculates total duration of stay
• appears seamlessly inside the current interface (no separate UI)

The work involves adding the relevant pages/components in Next.js, extending the NestJS services and database schema, wiring in any AWS resources you need, and shipping the whole thing with full Jest unit/integration tests. Code quality must match the existing clean, typed, linted codebase; every new container or script should build without warnings.

I will review with:
– smooth UI fit and responsive behaviour
– accurate QR reads and edge-case handling (invalid code, double scans, network loss)
– Jest coverage for new logic
– a concise README detailing setup and the new env vars, plus updated Docker compose

If that sounds straightforward, let me know your approach and ETA so we can get you into the repo.