maintenance: update default engine#16

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bootcoder wants to merge 12 commits intonagstler:mainfrom

bootcoder:maintenance/update_default_engine

Commits on May 17, 2025

set default engine: text-davinci-002 --> gpt-4o-mini per https://platform.openai.com/docs/deprecations
bootcoder
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Commits on May 18, 2025