Nementon/stdio-acp-bridge ? reverse-engineered prompt

Build me a small Rust tool that acts as a bridge between STDIO based AI agent CLIs and ACP compatible clients.

I want one main orchestrator binary that reads a YAML config, with environment variables and command line overrides, then launches the right backend bridge. It should support an OpenAI compatible API bridge and a Google Antigravity or Gemini CLI bridge, and work cleanly with Windows Intelligent Terminal. The app should speak ACP over STDIO, handle JSON RPC traffic, and let me turn on debug logging so I can see incoming and outgoing messages.

Please make it easy to configure things like the selected bridge, API base URL, API key, state storage, and debug log file. If you need to check the latest ACP or Intelligent Terminal docs online while building it, go ahead. I’d like it organized so I can build it with Cargo and run it from the terminal without extra setup.