The Nous Portal docs claimed routing 'happens through OpenRouter under
the hood' with OpenRouter-equivalent failover, and that the catalog
'mirrors OpenRouter's model list'. That is not the Portal's contract:
some models route through OpenRouter, others through proprietary or
secondary providers, and per-model routing can change over time.
The stale wording licensed users to expect OpenRouter-proprietary
request extensions (top-level cache_control, session_id sticky
routing, provider preferences) to work through the Portal, producing
misfiled bug reports like #71576. Reworded both pages (en + zh-Hans)
and added an explicit note that OpenRouter-specific extensions are not
part of the Portal API contract.