docs: add OpenZoo provider setup guide

[staccDOTsol]

Updated 2026-09-02: corrected — the hosted https://api.openzoo.fun/v1 endpoint answers HTTP 402 to a plain OpenAI client (it only serves calls that pay x402 or carry an OpenZoo subscription key, ozk_live_…). The page now sets up the local npx openzoo proxy (http://localhost:8402/v1), which pays x402 per call from a local burner wallet and ignores the API key.

Adds a provider guide for OpenZoo plus its index.json entry — the same shape as the merged ChatGPT Plus/Pro guide (#492).

OpenZoo works with Roo Code today through the existing "OpenAI Compatible" provider type; this page documents the local npx openzoo proxy as the base URL (http://localhost:8402/v1; the proxy ignores the API key, so any non-empty value works; billing is per call from the proxy's wallet), notes that the hosted endpoint needs x402 or a subscription key, and carries the tool-calling note per your openai-compatible requirements.

Disclosure: I operate OpenZoo. Verification: npx openzoo then curl http://localhost:8402/v1/models is free and lists model ids + pricing.

🤖 Generated with Claude Code

[vercel]

@jrsdunn123 is attempting to deploy a commit to the Roo Code Team on Vercel.

A member of the Team first needs to authorize it.