MachineKillin/KeywordKings — reverse-engineered prompt

Build me a simple Windows desktop tool for SEO keyword scraping called KeywordKings. I want to type in a seed keyword, pick which platforms to scrape from, then get a fast list of related keyword suggestions back.

It should support sources like Amazon, Ask, Bing, DuckDuckGo, eBay, Google, Google Books, Google Images, Google News, Google Shopping, Google Videos, Yahoo, Yandex, and YouTube. I also want an easy way to edit prefixes and suffixes used to expand the keyword search, so I can quickly test combinations like letters, questions, or buying terms.

Make the interface straightforward, with controls to start and stop scraping, show progress or status, and copy or export the results. Keep it lightweight and focused, not a complicated SEO suite. Please build it in C# as a working desktop app, and look up current docs online if you need to.