# Milestone 1: System Architecture

## Status

Started.

## Backend Deliverables

- Express.js and TypeScript backend workspace.
- Clean architecture folders:
  - `config`
  - `controllers`
  - `services`
  - `repositories`
  - `middlewares`
  - `validators`
  - `routes`
  - `utils`
  - `jobs`
  - `types`
  - `prisma`
- API bootstrap with security middleware.
- Health endpoint.
- Environment configuration.
- Prisma client entrypoint.

## Implemented Files

- `backend/package.json`
- `backend/tsconfig.json`
- `backend/.env.example`
- `backend/src/app.ts`
- `backend/src/server.ts`
- `backend/src/config/env.ts`
- `backend/src/prisma/client.ts`

## Completion Criteria

- Backend app can start after dependencies are installed.
- `/health` route returns service status.
- Folder structure matches the architecture document.