AeroChoclate/ML-Log-Analyzer — reverse-engineered prompt

Build me a Windows desktop app that helps people understand MelonLoader log errors from Unity games. I want a simple dark themed interface where I can open a .log or .txt file, see the log contents, choose one of a few free OpenRouter AI models, and click a button to get a plain English explanation of what went wrong and what I should try next.

There should be a settings area where I can enter and save my OpenRouter API key, and the app should remember it next time. After the analysis finishes, show the result in a separate panel and let me save it as a text file. Keep the app beginner friendly, with clear buttons like Open Log, Start Analysis, Save Result, Settings, and Close.

Use .NET 8 and WPF for Windows. Make it polished enough to run in Visual Studio, and look up current OpenRouter docs online if you need to.