Hermes sends provider-agnostic params like reasoning_effort that OpenRouter's
auto model doesn't accept, causing a 400 on every request until this was
set. Also documents (in a follow-up, not this commit) that getting Hermes to
actually use this gateway needed live 'hermes config set' calls on the
running container (providers.litellm.{api,api_key}, model.provider=litellm,
model.default=auto) — that state lives in the hermes-data volume, not git,
so it isn't reproduced automatically by a fresh deploy. See README.
william