fix: deep copy formatted_messages to prevent Groq message mutation (#562)#598

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fix/groq-message-mutation

Feb 24, 2026

Commits on Feb 24, 2026

fix: deep copy formatted_messages to prevent Groq structured output mutation corrupting fallback models (#562)

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gltanaka
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test: trim Groq mutation tests to 3 focused regressions in test_llm_invoke.py (#562)

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