feat(langchain): support `SystemMessage` in `create_agent`'s `system_prompt` #34055

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Merged

sydney-runkle merged 9 commits into master from sr/system-prompt-again

Nov 24, 2025

+1,411 −83

Merged

feat(langchain): support `SystemMessage` in `create_agent`'s `system_prompt` #34055

Merge branch 'master' into sr/system-prompt-again

GitHub Advanced Security / CodeQL succeeded Nov 24, 2025 in 2s

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