Update plugin list in README #12

	name: Update plugin list in README

	on:
	# twice per month (2:15 at the 2nd and 15th of the month)
	schedule:
	- cron: "15 2 2,15 * *"

	# allow triggering manually
	workflow_dispatch:

	permissions:
	contents: write

	#───────────────────────────────────────────────────────────────────────────────

	jobs:
	build:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v4

	- name: Update plugin list
	run: \|
	# config
	nvim_readme="./nvim/README.md"
	last_line_before_plugins="## All installed plugins"
	lazy_lock="./nvim/.lazy-lock.json"
	lazy_specs_path="./nvim/lua/plugins"

	# remove old lines
	sed -i '' -n "1,/$last_line_before_plugins/p" "$nvim_readme"

	# determine all installed plugins
	sed '1d;$d' "$lazy_lock" \| cut -d'"' -f2 \| # all plugin names
	xargs -I {} grep --only-matching --no-filename --max-count=1 \
	--regexp "[A-Za-z0-9_-]\+/"{} "$lazy_specs_path"/** \| # all plugin repos
	sort --ignore-case \| uniq \|
	sed -E 's\|.*\|- [&](https://github.com/&)\|' \
	>> "$nvim_readme"

	- uses: stefanzweifel/git-auto-commit-action@v5
	with:
	commit_message: "bot: auto-update plugin list"

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