langchain

ffe4def5 - docs(infra): add model reference freshness guidelines (#36626)

docs(infra): add model reference freshness guidelines (#36626) Add a "Model references in docs and examples" subsection to `AGENTS.md` and `CLAUDE.md` under Documentation standards. Codifies that docstrings and examples should use current GA model names, not stale ones — and explicitly draws the line between updating illustrative references (encouraged) and changing shipped code defaults (breaking change, separate process).