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feat(cli): preview keeps project history, and Studio can claim its own edits #14

	name: Comments

	permissions:
	contents: read

	# No secrets and a read-only token, so fork PRs run it too. Rules: CONTRIBUTING.md, "Comments".
	on:
	pull_request:
	types: [opened, synchronize, reopened]

	concurrency:
	group: comments-${{ github.event.pull_request.number }}
	cancel-in-progress: true

	jobs:
	comments:
	name: Comments
	# A release PR carries commits that each passed this gate on their own PR.
	if: ${{ !startsWith(github.head_ref, 'release/') }}
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
	with:
	# The PR's own head, graded against its merge-base: not the merge preview, which would
	# charge the branch for every comment main changed since it forked.
	ref: ${{ github.event.pull_request.head.sha }}
	fetch-depth: 0
	- uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
	- uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
	with:
	node-version: 22
	# The commented-out-code rule asks the TypeScript parser, a root dependency.
	- run: bash scripts/ci/install-workspace-dependencies.sh --ignore-scripts
	- name: Test the checker
	run: node --test scripts/check-comment-citations.test.mjs
	- name: Check the comments this diff touched
	env:
	COMMENT_CHECK_BASE: ${{ github.event.pull_request.base.sha }}
	run: node scripts/check-comment-citations.mjs