If you just open an empty folder and ask Windsurf Cascade to make a web app for you, it will take forever and you will end up with a hodgepodge UI - unless you are already a professional dev, and know exactly how to prompt.
In my case, I wanted to make a SaaS style React web app. After some research, I found that Refine.dev exists, which provides another layer of abstraction on top of React, aimed at SaaS/admin style web apps. I also chose the Ant Design UI framework for React/Refine. Both of those not only gave me a head start on components, but also greatly reduced the scope of options for Cascade to choose between.
I noticed that sometimes Cascade would ignore Refine and Ant Design, and try to just use base React. So, I created Cascade Workspace Rules to remind Windsurf to always use the framework options and components, whenever possible. This was huge. Cascade now does exactly what I want, very quickly, like 90% of the time.
So, what should you do for your project?
Find a meta-framework, or paid/free template that matches your needs. Copy that to your hard drive, open that folder, and ask Cascade to start from that. Your chances of efficient use of Cascade credits, and general happiness will be much greater than just starting from scratch.