Fix Qwen3.8 presence penalty defaults - #9372
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Codex Review: Didn't find any major issues. Already looking forward to the next diff. Reviewed commit: ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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Summary
presence_penalty=1.5in both thinking and non-thinking modes.preserve_thinkingremains default-on from #9096.Why
Qwen3.8 previously fell through to the generic Qwen3 defaults, so Studio did not apply the intended presence penalty. This explicitly maps Qwen3.8 to the Qwen3.6 defaults and keeps both frontend update paths consistent.
Validation
git diff --checkpassed.