Star history chart #12

	name: Star history chart

	# Regenerate the self-hosted star-history SVGs (light + dark) from the GitHub
	# API using the repo's own token — no third-party embed and no "sealed token"
	# to expire. Commits the SVGs only when they change.

	on:
	schedule:
	# Twice a week: Monday and Thursday 06:17 UTC. GitHub's scheduler is
	# best-effort and routinely runs 1-4 h late, so treat these as "some time
	# that morning", not as a deadline. The job only commits when the SVG
	# actually changes, so a week with no new stars produces no commit -- that
	# is the workflow working, not failing.
	- cron: '17 6 * * 1,4'
	workflow_dispatch: # manual "Run workflow" button

	permissions:
	contents: write

	concurrency:
	group: star-history
	cancel-in-progress: false

	jobs:
	refresh:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Generate star-history SVGs
	env:
	GITHUB_TOKEN: ${{ github.token }}
	STAR_HISTORY_REPO: ${{ github.repository }}
	run: python3 .github/scripts/gen_star_history.py

	- name: Commit if changed
	run: \|
	if [ -n "$(git status --porcelain .github/assets)" ]; then
	git config user.name 'github-actions[bot]'
	git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
	git add .github/assets/star-history-light.svg \
	.github/assets/star-history-dark.svg
	git commit -m 'chore: refresh star-history chart [skip ci]'
	git push
	else
	echo 'star-history unchanged'
	fi

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