Yield reasoning delta in the response or add hooks to handle

[dongxiaohuang]

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• Have you read the docs?Agents SDK docs yes
• Have you searched for related issues? Others may have had similar requests yes

Describe the feature

What is the feature you're requesting? How would it work? Please provide examples and details if possible.
I would like to handle the deepseek/deepseek-reasoner reasoning delta data in my response, but this framework cannot handle