fix: don't render empty mermaid graph when only test nodes downstream #39

	name: Release

	on:
	push:
	tags: ["v*"]

	permissions:
	contents: write

	jobs:
	release:
	name: Release
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- uses: oven-sh/setup-bun@v2
	with:
	bun-version: latest

	- name: Install dependencies
	run: bun install --frozen-lockfile

	- name: Lint
	run: bun run lint

	- name: Typecheck
	run: bun run typecheck

	- name: Unit tests
	run: bun test test/unit/

	- name: Build dist/
	run: bun run build

	- name: Verify dist/index.js exists
	run: test -f dist/index.js

	- name: Parse version info
	id: version
	run: \|
	TAG="${GITHUB_REF#refs/tags/}"
	echo "tag=$TAG" >> "$GITHUB_OUTPUT"
	# Extract major version (e.g., v1 from v1.2.3)
	MAJOR=$(echo "$TAG" \| grep -oE '^v[0-9]+')
	echo "major=$MAJOR" >> "$GITHUB_OUTPUT"
	# Detect pre-release
	if echo "$TAG" \| grep -qE '-(alpha\|beta\|rc)'; then
	echo "prerelease=true" >> "$GITHUB_OUTPUT"
	else
	echo "prerelease=false" >> "$GITHUB_OUTPUT"
	fi

	- name: Create GitHub Release
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	TAG="${{ steps.version.outputs.tag }}"
	PRERELEASE_FLAG=""
	if [ "${{ steps.version.outputs.prerelease }}" = "true" ]; then
	PRERELEASE_FLAG="--prerelease"
	fi
	gh release create "$TAG" \
	--repo "$GITHUB_REPOSITORY" \
	--generate-notes \
	$PRERELEASE_FLAG

	- name: Update floating major tag
	if: steps.version.outputs.prerelease == 'false'
	run: \|
	MAJOR="${{ steps.version.outputs.major }}"
	git tag -f "$MAJOR"
	git push origin "$MAJOR" --force

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