✨ recreate .emacs.d using nongnu, then melpa-stable

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Revert "🪲 run ruff from project root dir if current buffer belongs to…

… a project"

The change is released upstream.

This reverts commit 5568385.

refactor: defadvice -> advice-add

defadvice is obsolete
https://www.gnu.org/software/emacs/manual/html_node/elisp/Porting-Old-Advice.html

feat: add zig-mode

fix: warnings on emacs 28 startup

fix: warnings on emacs 28 startup

fix: warnings on emacs 28 startup

feat: add org-reveal

fix(jupyter-python): do not defer loading ob-async

otherwise jupyter code blocks might refuse to execute (if executed
before ob-async is loaded)

fix(async): turn it off for jupyter-ansible too