chore(dependabot): emit Conventional Commits titles (#15) #3

	name: Validate PR Title

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

	permissions:
	contents: read

	jobs:
	validate-pr-title:
	name: Validate Conventional PR title
	runs-on: ubuntu-latest
	if: github.event.pull_request.user.login != 'renovate[bot]' && !startsWith(github.event.pull_request.title, '[Snyk]')
	steps:
	- name: Check Conventional Commit title
	env:
	TITLE: ${{ github.event.pull_request.title }}
	run: \|
	set -euo pipefail

	echo "PR title: ${TITLE}"

	# Filigran-wide Conventional Commits convention.
	ALLOWED_TYPES='feat\|fix\|docs\|style\|refactor\|perf\|test\|build\|ci\|chore\|revert'

	# Required format: type(scope?)!?: description (#123)
	PATTERN="^(${ALLOWED_TYPES})($[a-z0-9]+([_-][a-z0-9]+)(\/[a-z0-9]+([_-][a-z0-9]+))$)?!?: [a-z0-9]. $#[0-9]+$$"

	if [[ "${TITLE}" =~ ${PATTERN} ]]; then
	echo "PR title is valid."
	exit 0
	fi

	echo "Invalid PR title."
	echo ""
	echo "Required format:"
	echo " type(scope?): description (#123)"
	echo ""
	echo "Allowed types:"
	echo " feat, fix, docs, style, refactor, perf, test, build, ci, chore, revert"
	echo ""
	echo "Examples:"
	echo " feat(api): add bulk export endpoint (#871)"
	echo " fix: handle missing auth token (#456)"
	exit 1

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