- Add real-time chat between customers and staff via WebSocket
- Add HTTP polling fallback when WebSocket unavailable
- Chat auto-closes when worker ends conversation with dialog notification
- Add user search API for group order invites (phone/email/name)
- Store group order invites in app state
- Add login check before starting chat with sign-in prompt
- Remove table change button (not allowed currently)
- Fix About screen to show dynamic version from pubspec
- Update snackbar styling to green with black text
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add About Payfrit screen with app info, features, and contact details
- Add Order Detail screen showing line items with non-default modifiers
- Add order_detail model with parent-child line item hierarchy
- Update order history to navigate to detail screen on tap
- Add getOrderDetail API method
- Add about route to app router
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>