Create a basic frontend UI mockup for a RAG (Retrieval-Augmented Generation) system with the following features: File Upload Interface: A section where users can upload .txt files to the RAG system. Include a clear "Upload" button and a drag-and-drop area for file uploads. Display a list of uploaded files with options to remove or view them. Query Interface: A search bar where users can input queries. A "Search" button to initiate the query. Display matching text results in a user-friendly format below the search bar. Design Preferences: Clean and intuitive layout. Use modern design principles. Ensure the interface is user-friendly and easy to navigate. | A shadcn/ui and v0 generation - v0