Issue Checklist

• I understand that issues are for feedback and problem solving, not for complaining in the comment section, and will provide as much information as possible to help solve the problem.
• My issue is not listed in the FAQ.
• I've looked at pinned issues and searched for existing Open Issues, Closed Issues, and Discussions, no similar issue or discussion was found.
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• I've confirmed that I am using the latest version of Cherry Studio.

Platform

Windows

Version

v.1.6.7

Bug Description

In v.1.6.7, when sending requests to thinking models like gpt5 mini, the reasoning level doesn't take effect. Checking the debug tool reveals that the reasoning_effort parameter is not being passed. It was passed in v.1.6.6.

Steps To Reproduce

1. Adjust reasoning level
2. Send request to thinking models like gpt5 mini
3. Check request body

Expected Behavior

reasoning_effort should be passed

Relevant Log Output

Additional Context

No response