fix(tracing): prevent RecursionError in truncation of truncated previews#2857

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Bahtya wants to merge 3 commits intoopenai:mainfrom

Bahtya:fix/truncation-recursion

Commits on Apr 8, 2026

fix(tracing): prevent RecursionError in truncation of truncated previews
Bahtya
committed
fix: use sentinel key to identify truncated preview dicts
Bahtya
committed
fix: validate sentinel value and preview fields for truncated detection
Bahtya
committed