itssourav5198-stack/lyro-web ? reverse-engineered prompt

Build me a clean full stack web app in this project, using the existing TypeScript setup.

I want a polished frontend with a simple, modern UI and a backend that supports the main app flow end to end. Please wire the client and server together, keep the code organized, and use the shared folder for anything both sides need. Make it feel production ready, with sensible loading states, error handling, and basic validation so it does not feel like a rough demo.

If there are any missing details in the current setup, figure out the best path from the existing files and look up current docs online if you need to. I do not need anything fancy, just a solid working app that runs locally and is ready to deploy, with the important pieces implemented instead of placeholders.