Document OpenAI-compatible base URL configuration

[cerebrixos]

This keeps the default OpenAI endpoint unchanged while documenting how to configure another OpenAI-compatible endpoint through OPENAI_BASE_URL.\n\nWhy this may be useful:\n- local inference servers\n- private model gateways\n- self-hosted routers\n- observability and enterprise control planes\n\nThe example uses the existing Configuration fields and does not add a provider-specific integration.

[nezhyborets]

Hi @cerebrixos, thanks for the contribution!
Do you mean you want to show that URL string and the token could be retrieve from ProcessInfo.processInfo.environment before passing to Configuration.init?

[cerebrixos]

Yes exactly — the idea is to show that Configuration already supports a custom base URL, so users can point it at any OpenAI-compatible endpoint by reading OPENAI_BASE_URL from the environment (or hardcoding it). No new API surface needed — just a documentation example showing the existing host parameter in Configuration.init can be set to a non-OpenAI URL. Happy to adjust the example to explicitly use ProcessInfo.processInfo.environment["OPENAI_BASE_URL"] if that makes the intent clearer.