Metrics #14

	name: Metrics

	# Daily privacy-preserving growth snapshot (docs/metrics/README.md).
	# Reads only what GitHub already exposes — stars, updater-ping (latest.json)
	# downloads, dmg downloads — and appends one row to snapshots.csv on the
	# dedicated `metrics-data` branch (kept off `main` so this auto-commit never
	# fights branch protection). No secrets; uses the built-in GITHUB_TOKEN.

	on:
	schedule:
	- cron: "17 6 * * *" # 06:17 UTC daily
	workflow_dispatch: {}

	permissions:
	contents: write

	concurrency:
	group: metrics
	cancel-in-progress: false

	jobs:
	snapshot:
	name: Daily snapshot
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Capture snapshot row
	env:
	GH_TOKEN: ${{ github.token }}
	REPO: ${{ github.repository }}
	run: bash scripts/metrics-snapshot.sh > /tmp/row.csv

	- name: Append to the metrics-data branch
	run: \|
	set -euo pipefail
	header="date,stars,forks,updater_pings,dmg_downloads,all_asset_downloads,latest_tag"
	git config user.name "github-actions[bot]"
	git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

	if git fetch origin metrics-data 2>/dev/null; then
	git checkout -B metrics-data origin/metrics-data
	else
	git checkout --orphan metrics-data
	git rm -rf . >/dev/null 2>&1 \|\| true
	echo "$header" > snapshots.csv
	fi

	[ -f snapshots.csv ] \|\| echo "$header" > snapshots.csv
	cat /tmp/row.csv >> snapshots.csv

	git add snapshots.csv
	git commit -m "chore(metrics): snapshot $(date -u +%F)" \|\| { echo "no change"; exit 0; }
	git push origin metrics-data

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