- Add employeeNumber and pinHash fields to users table
- POST /auth/pin-login: takes combined code (4-digit employee# + 4-digit PIN)
- POST /auth/set-pin: employee sets their own PIN (requires full auth)
- DELETE /auth/pin: remove PIN
- Lock screen with numpad, auto-submits on 8 digits, visual dot separator
- POS uses its own auth token separate from admin session
- Admin "POS" link clears admin session before navigating
- /pos route has no auth guard — lock screen is the auth
- API client uses POS token when available, admin token otherwise
- Auto-lock timer reads pos_lock_timeout from app_config (default 15 min)
- Lock button in POS top bar, shows current cashier name
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Standalone register at /pos bypassing the admin sidebar layout:
- Two-panel layout: product search/grid (60%) + cart/payment (40%)
- Product search with barcode scan support (UPC lookup on Enter)
- Custom item entry dialog for ad-hoc items
- Cart with line items, tax, totals, and remove-item support
- Payment dialogs: cash (quick amounts + change calc), card, check
- Drawer open/close with balance reconciliation and over/short
- Auto-creates pending transaction on first item added
- POS link added to admin sidebar nav (module-gated)
- Zustand store for POS session state, React Query for server data
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
