Hikkywannafly/steam-workshop-download — reverse-engineered prompt

Build me a simple desktop app for downloading Steam Workshop items even if I do not own the game. I want to be able to paste a Steam Workshop URL, have the app detect the game automatically, and if it cannot, let me search and pick the game myself. Then I should be able to choose a folder on my computer and click Download to save the workshop item there.

Please make it work well for Wallpaper Engine and also other supported Workshop games like Left 4 Dead 2 and Cities Skylines. Keep the interface really clean and easy for a normal person to use, with clear status messages while it is downloading and useful error messages if something goes wrong. If this needs any extra runtime installed on Windows, make that obvious in the app or setup flow.

If you need details that are not obvious, look up the current docs online and make sensible choices.