chore(ci): add conventional commit message check #3

	name: "Conventional Commit Message Check"

	on:
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:
	commit-message-lint:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Lint commit messages
	run: \|
	set -euo pipefail
	echo "Event: ${{ github.event_name }}"

	if [ "${{ github.event_name }}" = "pull_request" ]; then
	range="${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}"
	else
	before="${{ github.event.before }}"
	sha="${{ github.sha }}"
	if [ "$before" = "0000000000000000000000000000000000000000" ]; then
	# new branch or initial push, check last commit only
	range="$sha^..$sha"
	else
	range="$before..$sha"
	fi
	fi

	echo "Commit range: $range"
	# list commit subjects, skip merge commits
	commits=$(git log --no-merges --pretty=format:%s "$range" \|\| true)
	if [ -z "$commits" ]; then
	echo "No commits found to lint."
	exit 0
	fi

	failed=0
	while IFS= read -r subject; do
	[ -z "$subject" ] && continue
	# allow and skip merge commits if any slipped through
	if echo "$subject" \| grep -q -i "^Merge "; then
	echo "Skipping merge commit: $subject"
	continue
	fi

	if ! echo "$subject" \| grep -E -q '^(revert: )?(feat\|fix\|docs\|style\|refactor\|perf\|test\|build\|ci\|chore)($[a-zA-Z0-9_.\-/]+$)?(!)?: .+'; then
	echo "::error ::Conventional commit validation failed for: $subject"
	failed=1
	else
	echo "OK: $subject"
	fi
	done <<< "$commits"

	if [ $failed -ne 0 ]; then
	echo "One or more commits do not follow Conventional Commits."
	exit 1
	fi

Provide feedback