# POS-010 — Implementer evidence

## What
Discount panel: backend validation endpoint + React component. tsc 0, verify verde.

## Files
- `src/modules/pos/api/pos.routes.ts` — POST /pos/discounts/validate
- `apps/pos/src/components/DiscountPanel.tsx` — React component

## Verification
- `npm run build` → 0 TypeScript errors.
- `./scripts/verify.sh` → green.