New "Frontdesk" Role for Visitor Management

Admins can now assign the new Frontdesk role to reception staff and other visitor-management-only users. Frontdesk users see only the Visitors and Kiosks sections — desk booking, reports, and all other admin features are hidden. This applies across both the dashboard and the web app, so Frontdesk users land directly on the visitor management surface without seeing any employee workspace data.