docs: Add PR guidelines and pre-PR checklist to CLAUDE.md #1973

	name: Check generate-otel-collector-distro
	permissions:
	contents: read
	on: pull_request

	jobs:
	check:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
	with:
	fetch-depth: 0
	persist-credentials: false

	- name: Set up Go
	uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5
	with:
	go-version-file: go.mod
	cache: false

	- name: Run generate-otel-collector-distro
	run: \|
	make generate-otel-collector-distro

	- name: Check for generated file changes
	run: \|
	# List changed files in the collector directory (excluding generator source files)
	if [ -n "$(git status --porcelain -- collector/)" ]; then
	echo "Error: generated collector files are out of sync with generate-otel-collector-distro."
	echo " Run: make generate-otel-collector-distro and commit the generated files"
	git status -- collector/
	git diff -- collector/
	exit 1
	fi

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