i've really been wanting to replace obsidian. i tried logseq for some time but i wasn't very satisfied. i've heard aboyt siyuan but never installed it. do you have any thoughts?

This is at the end of the README:

opensidian was built predominantly with AI models. Nearly all of the code, the design docs, and this README were written by Claude (Anthropic's models, via Claude Code) working from prompts, reviews, and corrections by a single human maintainer. The human decided what to build and what the trust model must guarantee, read and pushed back on the output, and ran it; the models wrote most of the lines. Commit messages record the design rationale in the same way — many were drafted by the model and edited by the maintainer.

Sounds like it was reverse engineered by an LLM

You are lucky you don't work with RTL languages with Complex layout ;)

And Linux only atm?