Key features:
👉️ Smart post splitting, avoiding breaking paragraphs or words,
👉️ Manual control of post breaks using the "=====" symbol,
👉️ A new "Thread" exposure mode: first post is public, the rest are unlisted to avoid spam,
👉️ Live preview,
👉️ Which other feature do you want?

I'm not a professional developer, so feedback is welcome! Negative as well, that's how you study.

Source code: https://codeberg.org/neiman/splinter (2/2)