Mason Daugherty 2638f75e13 feat(standard-tests): forward LangSmith CI env vars to traces (#37645) ...

Scheduled integration runs set `LANGSMITH_TAGS` and `LANGSMITH_METADATA`
in `$GITHUB_ENV` (per #37615), but the LangSmith SDK does not read those
env vars natively, so the tags/metadata were silently dropped. A new
pytest plugin in `langchain-tests` bridges that gap by entering
`langsmith.run_helpers.tracing_context` for the duration of each
session.

2026-05-23 00:17:47 -04:00

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