fix(ls): reserve the git column only when a section has a status (#120) #121

	name: Changelog

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]
	workflow_dispatch:

	# Pre-empt the June 2 2026 GitHub Actions Node 24 cutover. Forces all
	# JS-based actions (setup-just, etc.) to run on Node 24 regardless of
	# their action.yml-declared runtime.
	env:
	FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true

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

	jobs:
	lint-changelog:
	timeout-minutes: 5
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	with:
	# Invariant B diffs each released CHANGELOG section against
	# its git tag (`git show vX.Y.Z:CHANGELOG.md`), which needs
	# full tag history — the default shallow checkout has none.
	fetch-depth: 0
	- uses: extractions/setup-just@53165ef7e734c5c07cb06b3c8e7b647c5aa16db3 # v4
	# Catches the class of bug where a PR merges cleanly (no textual
	# conflict) but lands unreleased entries inside an already-tagged
	# section, or drops the "## Unreleased" heading entirely. Git's
	# line-based merge can't see that a released section is frozen,
	# so this gate checks it explicitly: Unreleased heading present
	# (except during the release-promotion window), every released
	# section byte-identical to its tag, and no leftover conflict
	# markers.
	- name: Lint CHANGELOG structure
	run: just lint-changelog

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