Yes. See https://join-lemmy.org/docs/contributors/04-api.html for general usage and https://github.com/db0/pythorhead for a library (written in Python).

Edit: See also: https://lemm.ee/c/lemmydev and https://lemmy.dbzer0.com/c/lemmy_integrations

Yes, they started the restriction a year ago. For a future reference, here’s the announcement about the restriction (written in Japanese): https://support.misskey.io/hc/ja/articles/7604557294607

Yes, fenced code block with specifying langauge may work as a workaround.

```text
systemctl --user cat emacs
```

but I said “inline” explicitly.

lemmy-ui: Highlighting some words blindly in inline code is really annoying. For example,

• systemctl --user cat emacs
• pactl load-module module-switch-on-connect