Zhao73/free-astra ? reverse-engineered prompt

Build me a small tool that lets Codex use GPT 6 Astra for free through my signed in Prism session, without needing a paid plan or API key.

I want to install it locally, log in once in the browser, and then keep using it from the Codex CLI and desktop app like a normal model picker option. It should work with a few model names, like prism astra, prism sol, and prism terra, and if the exact model is blocked it should quietly fall back to one Prism still accepts instead of breaking the task.

It should handle session setup, keep the connection alive when possible, and let me turn the bridge on or off cleanly. If you need to look up current docs online or test behavior against Prism, go ahead. Keep it simple for a regular user, and make sure it can still forward any non Prism models untouched.