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Add GitHub Marketplace badge #13

	# Release pipeline — dogfoods the bundled patchnotes action for validation,
	# tag/changelog sync, and GitHub Release creation, then publishes to PyPI
	# via trusted publishing.
	name: Publish to PyPI

	on:
	push:
	tags: ["v..*"] # full version tags only — the moving 'v2' action tag doesn't match
	workflow_dispatch:

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	- run: pip install . pytest
	- run: pytest tests/ -q

	release:
	name: Validate + GitHub Release (dogfood)
	needs: test
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	# On tag pushes: strict-validate, require tag == latest changelog
	# version, and publish a GitHub Release with the changelog notes.
	# On manual runs: validate + check against pyproject.toml only.
	- uses: ./
	with:
	file: CHANGELOG.md
	strict: "true"
	check-version: ${{ startsWith(github.ref, 'refs/tags/') && github.ref_name \|\| 'pyproject.toml' }}
	release: ${{ startsWith(github.ref, 'refs/tags/') && 'true' \|\| 'false' }}
	version: "."

	publish:
	needs: release
	runs-on: ubuntu-latest
	environment: pypi
	permissions:
	id-token: write # required for PyPI trusted publishing
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	- name: Build sdist and wheel
	run: \|
	pip install build
	python -m build
	- name: Publish to PyPI
	uses: pypa/gh-action-pypi-publish@release/v1