React frontend and Express + Postgres backend. Run everything locally with no cloud required.

From the web folder:

docker compose up -d

(Or use a local Postgres install; create a database named jpaint.)

cd backend
cp .env.example .env
# Edit .env if needed (DATABASE_URL, JWT_SECRET)
npm install
npm run db:migrate
npm run dev

API runs at http://localhost:3001.

From the web folder (not inside backend):

cp .env.example .env
# VITE_API_URL defaults to http://localhost:3001
npm install
npm run dev

App runs at http://localhost:5173. Log in or register; projects and canvas UI can be added next.

• POST /auth/register — body: { email, password } → { user, token }
• POST /auth/login — body: { email, password } → { user, token }
• GET /projects — header: Authorization: Bearer <token> → list projects
• GET /projects/:id — get one project (with canvas_data)
• POST /projects — body: { name?, canvas_data? } → create
• PATCH /projects/:id — body: { name?, canvas_data? } → update
• DELETE /projects/:id — delete