Variable: CHAT\_COMPLETIONS\_PATH
constCHAT_COMPLETIONS_PATH:"serving-endpoints/chat/completions"="serving-endpoints/chat/completions"
Workspace-level OpenAI Chat Completions path. Body carries model (endpoint
id), unlike invocationsUrl which names the endpoint in the URL. Use
this when the caller has a model id rather than a per-endpoint route - e.g.
attaching a provider tool spec to whichever endpoint was resolved.