rajatbiswas88/oneprofilerfinal ? reverse-engineered prompt

Build me a polished TypeScript web app in this repo, with a clean shared design system and a couple of real screens that feel production ready.

I want the project organized as a monorepo, with a main app, reusable UI pieces, and room for docs and end to end testing. Make it easy to run locally, easy to build for production, and make sure the UI looks modern and consistent across pages. If anything is unclear, make sensible choices and keep the implementation practical.

Please wire up the basic app flow, a nice landing page or dashboard style home, and a few reusable components I can extend later. Add sensible environment setup, basic tests, and anything else needed so the repo feels complete. If you need to check current best practices or docs online, go ahead and do that.