Two UI stacks: Next.js frontend and Streamlit/NiceGUI dependencies

[kowshikdev]

Problem

frontend/ is a Next.js app, but requirements.txt also pulls streamlit==1.40.1 and nicegui. Three UI frameworks for one product.

This bloats install time, creates ambiguity about the real entry point, and means UI work can land in the wrong place.

Proposed solution

1. Decide which is canonical — Next.js is the more complete one and the README leads with it.
2. Remove the unused frameworks from requirements.txt.
3. If Streamlit is genuinely useful for internal dashboards, split it into requirements-dev.txt and say so in the README.

[kowshikdev]

Resolved in #6 (merged to main via #8): streamlit and nicegui were pinned in requirements.txt as a supposed second UI stack, but neither was ever imported anywhere in the codebase — grep -rn "import streamlit\|import nicegui" across the whole tree returned nothing. There was one real UI (Next.js) and two unused pip packages, not a decision to make. Both removed.