Add authorship note disclosing AI-assisted revisions #3

	# check-macros.yml
	#
	# Verifies that every chapter-level copy of a macro file is byte-identical
	# to its canonical version in macros/. Runs scripts/sync-macros.sh and
	# fails the job if the script produced any change that was not already
	# committed.
	#
	# Rationale: the repo ships one copy of each macro file per chapter so
	# that each chapter directory remains self-contained on GitHub. Those
	# copies are derived artifacts; macros/*.S is the single source of
	# truth. This check turns "copies are in sync" from a convention into
	# a machine-enforced invariant, so drift cannot sneak into main.
	#
	# To fix a failure locally:
	# ./scripts/sync-macros.sh
	# git add -u
	# git commit --amend --no-edit # or a new commit, whichever you prefer

	name: Check macro sync

	on:
	push:
	branches: [main]
	pull_request:

	jobs:
	check-macros:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Run sync script
	run: ./scripts/sync-macros.sh

	- name: Fail if any chapter copy drifted from canonical
	run: \|
	if ! git diff --exit-code; then
	echo "::error::Chapter macro copies drifted from the canonical files in macros/."
	echo "::error::Run ./scripts/sync-macros.sh locally and commit the result."
	exit 1
	fi

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