mattizz-pr0/SteamFix ? reverse-engineered prompt

Build me a Windows desktop app that helps people manage SteamTools game fixes from one place. I want a simple interface where I can see the games already installed, search for new ones, download and install the latest files, remove things I do not need, and browse community fixes too. It should also have a way to upload content if I have an access token, and a one click option to fix Steam when it shows the connection failed error, then restart Steam automatically.

Please make it feel like a real desktop app, with a clean library view, search as I type, settings for API keys and tokens, and support for both English and Italian. It should remember my settings between updates and check for new versions on its own. If you need to look up current docs online, go ahead.