use Chat API format by default + release.yaml

[Nikhil (shadowfax92)]

• Release 0.48.0
• Release 0.49.0
• cargo lock version
• use chat API format
• browseros release.yml

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

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I have read the CLA Document and I hereby sign the CLA

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0 out of 3 committers have signed the CLA.
❌ pakrym-oai
❌ Shijie Rao (@shijie-oai)
❌ Nikhil (@shadowfax92)
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