chore: add zizmor workflow to harden GitHub Actions security #3

	# Analyzes all GitHub Actions workflows for security issues using zizmor.
	# docs: https://docs.zizmor.sh/
	name: Workflow Security Analysis (zizmor)

	on:
	pull_request:
	paths:
	- ".github/workflows/**"
	schedule:
	# Every Saturday at 00:00 UTC
	- cron: "0 0 * * 6"

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	zizmor:
	name: zizmor
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- name: Checkout
	# see https://github.com/actions/checkout
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
	with:
	persist-credentials: false
	- name: Run zizmor
	# see https://github.com/zizmorcore/zizmor-action
	uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3
	with:
	# advanced-security: false => emit findings as workflow-command annotations (::error file=…) rather than
	# uploading a SARIF report to GitHub's Security tab.
	# Uploading SARIF requires `security-events: write` and GitHub Advanced Security (GHAS),
	# both of which are unnecessary here and would violate the least-privilege policy.
	# The two modes are mutually exclusive: advanced-security must be false for
	# annotations to take effect.
	advanced-security: false
	annotations: true

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