Barbershop management platform: appointments, POS, customer portal, and a WhatsApp chatbot for booking. Backend is Node.js + Express + SQLite (better-sqlite3); frontend is React 18 + Vite.
Run before opening a PR:
npm run verify # full: types + unit + integration + E2E (~3-5 min)
npm run verify:quick # mid-edit (~30s)See TESTING.md for the verification matrix and how to add new tests.