I need a straightforward Android app that acts as a lightweight point-of-sale tool for my shop assistants. They should be able to: • Search any product and instantly see its current stock value, using data imported from my existing Vyapaar app (a simple CSV or other quick-import method is fine). • Add items to a cart, enter the rate for each, and apply a single discount field per line. • Review the cart and, on checkout, generate a clean list of all items, prices, discounts, and the final total that I can save or share. For this initial build I only expect a basic, working prototype—no fancy UI, just a clear layout that gets the job done. If we like the flow, we can discuss refinements later. The APK should run on current Android phones, install offline, and not require any paid third-party services. Clean, well-commented code (Kotlin or Java) and a one-page setup guide are enough for now.