This lead to https://github.com/theohbrothers/ConvertOneNote2MarkDown

However, this has some restrictive OS requirements so it may not be applicable.

That depends. What operating system do you use?

Public transit might be great, but it is certainly not ad-free.

Do you have a source on Taiwan banning the local model? I only see this:

“Government agencies and critical infrastructure should not use DeepSeek, because it endangers national information security,” according to a statement released by Taiwan’s Ministry of Digital Affairs, per Radio Free Asia.

“DeepSeek AI service is a Chinese product. Its operation involves cross-border transmission, and information leakage and other information security concerns.”

https://thehackernews.com/2025/02/taiwan-bans-deepseek-ai-over-national.html?m=1