Returns Case Builder (PS-18)

This repo contains a full-stack demo implementing the requirements from the prompt:

• Case timeline assembled from messages / order events / policy docs with references to the input
• Disputed claims extracted and mapped to policy clauses with evidence links
• Responsibilities split into case assembly, policy checking, and final reviewer validation
• Reviewer workflow (approve/reject + rationale) with audit trail

Tech stack

• Backend: Node.js + Express + Prisma + SQLite + JWT + bcrypt
• Frontend: React (Vite) + Tailwind

1) Backend setup

Open a terminal in backend/:

1. Copy env file:

• Copy backend/.env.example to backend/.env

2. Install deps:

• npm install

3. Create DB + seed users + policy clauses:

• npx prisma migrate dev --name init
• npm run seed

4. Start backend:

• npm run dev

Backend runs at http://localhost:4000.

Seeded credentials

• Admin: admin@example.com / Admin@123
• Reviewer: reviewer@example.com / Reviewer@123

2) Frontend setup

Open a terminal in frontend/:

1. Install deps:

• npm install

2. Start frontend:

• npm run dev

Frontend runs at http://localhost:5173.

How to use

1. Login
2. Create a case
3. Open the case
4. Ingest sources (add messages / order events / policy docs)
5. Click Assemble to build timeline + claims
6. Click Run policy check to map claims → clauses
7. Submit reviewer decision with rationale (writes audit trail)