We sell complex industrial machines and want an iOS app that a sales rep can use with a customer to configure a product in 3D. The app should display a detailed model that can be rotated and zoomed, and let the rep swap modular parts, choose materials, and pick colors, with the model updating instantly. A simple, touch-friendly control panel (built with SwiftUI) is fine. The app should pull available components and pricing rules from our server so pricing reflects each selection. Please also include an AR mode so the configured machine can be placed in the customer’s space at real scale.