NeonityDev/XtremeShell ? reverse-engineered prompt

Build me a simple free Windows optimizer app called XtremeShell that helps people clean up and speed up their PC. I want a clean desktop app with a straightforward interface where someone can run common maintenance tasks like removing junk files, clearing temporary data, finding unnecessary startup items, and showing basic system info in one place. It should feel easy to use for regular people, with a big obvious button to start a scan and clear results that explain what is safe to remove. Please make it look modern and polished, but keep it lightweight and fast. If there are any current Windows or .NET best practices you should follow, use them, and look up current docs online if you need to. Also make sure it handles errors safely and does not delete anything without showing the user what will happen first.