# POS-007 — Architect

## Feature
POS Phase 1 ticket 007: Main register screen for POS app.

## Objetivo
Full POS register UI replacing the placeholder: product search, cart, customer association, discount panel, payment buttons.

## Diseño
- Left panel: search bar + product results (add to cart)
- Right panel: cart (items, quantities, discounts, totals) + payment buttons
- Discount overlay: DiscountPanel component (POS-010)
- Customer search: inline in cart panel
- Sale completion: POST /pos/sales with full cart + payment
