Pull the api-standards skill from the LangSmith Context Hub at reviewer
run start and inject it into the system prompt, gated on the PR adding or
modifying an API surface. Best-effort: failures fall back to no supplement.
Co-authored-by: GowriH-1 <218394553+GowriH-1@users.noreply.github.com>
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
