github/copilot-sdk ? reverse-engineered prompt

I want to build a multi-platform SDK that lets developers embed GitHub Copilot's agent workflows directly into their own apps and services. The main idea is to give them access to the same engine that powers the Copilot CLI, but as a simple library they can program against.

The SDK should handle all the complex orchestration—things like planning steps, using tools to edit files or run git commands, and so on. Please create versions for the most popular languages: TypeScript/Node.js, Python, Go, .NET, and Java.

For authentication, it's important to be flexible. It should work with a standard GitHub Copilot subscription, but also let developers use their own API keys from providers like OpenAI or Anthropic (a "bring your own key" model). Make sure the SDKs for Node, Python, and .NET automatically bundle the required CLI tool so installation is easy for developers.