fix: harden scheduled sync reliability #31

	name: Homebrew

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	types:
	- opened
	- synchronize
	- reopened
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: homebrew-${{ github.workflow }}-${{ github.head_ref \|\| github.ref_name }}
	cancel-in-progress: true

	jobs:
	formula:
	name: Formula Syntax
	runs-on: macos-26
	steps:
	- name: Checkout mac-sync
	uses: actions/checkout@v7

	- name: Render formula fixtures
	shell: bash
	run: \|
	set -euo pipefail
	mkdir -p Formula
	python3 Tools/release/update-homebrew-formula.py \
	--formula Formula/mac-sync.rb \
	--template Tools/release/mac-sync.rb.in \
	--formula-class MacSync \
	--formula-name mac-sync \
	--url https://example.invalid/mac-sync-release-arm64.tar.gz \
	--version 0.1.0 \
	--asset mac-sync-release-arm64.tar.gz \
	--label stable \
	--sha256 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
	python3 Tools/release/update-homebrew-formula.py \
	--formula Formula/mac-sync-current.rb \
	--template Tools/release/mac-sync.rb.in \
	--formula-class MacSyncCurrent \
	--formula-name mac-sync-current \
	--url https://example.invalid/mac-sync-current-0123456789ab-arm64.tar.gz \
	--version current.1.0123456789ab \
	--asset mac-sync-current-0123456789ab-arm64.tar.gz \
	--label current \
	--sha256 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

	- name: Validate formulae
	shell: bash
	run: \|
	set -euo pipefail
	for formula in Formula/*.rb; do
	ruby -c "$formula"
	brew style "$formula"
	done

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