Add release machinery #1

	name: Release

	on:
	push:
	tags:
	- "v[0-9]+.[0-9]+.[0-9]+"
	workflow_dispatch:
	inputs:
	tag:
	description: "Existing tag to release (e.g. v0.0.1)"
	required: true

	permissions:
	contents: write

	jobs:
	release:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	ref: ${{ inputs.tag \|\| github.ref }}

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version-file: go.mod

	- name: Run tests
	run: go test -v ./...

	- name: Run GoReleaser
	uses: goreleaser/goreleaser-action@v6
	with:
	version: latest
	args: release --clean
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	GORELEASER_CURRENT_TAG: ${{ inputs.tag \|\| '' }}

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