feat: hook handler argument types (sniff + PHPStan rule) #3

	# Continuous Integration for stellarwp/coding-standards.
	#
	# On every push to main and every pull request: validates composer.json and runs
	# the PHPUnit suite (the HookHandlerTypes sniff and PHPStan rule tests) across a
	# range of PHP versions.
	name: CI

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	test:
	name: Test (PHP ${{ matrix.php-version }})
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	# PHPUnit 9.6 and PHPStan 1.x support this range. The PHPStan rule test
	# skips on 7.4 (a php-parser emulation quirk in the test harness only);
	# the sniff test runs on every version.
	php-version:
	- '7.4'
	- '8.0'
	- '8.1'
	- '8.2'
	- '8.3'
	- '8.4'

	steps:
	- name: Check out the code
	uses: actions/checkout@v7

	- name: Configure PHP ${{ matrix.php-version }}
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-version }}
	extensions: mbstring
	coverage: none

	- name: Validate composer.json
	run: composer validate --no-check-lock

	- name: Install dependencies
	uses: ramsey/composer-install@v4

	# Runs the sniff (AbstractSniffUnitTest) and PHPStan rule (RuleTestCase)
	# tests. The sniff test constructs the full StellarWP ruleset, so a broken
	# ruleset fails here too. --testdox lists each test and its result.
	- name: Run the test suite
	run: composer phpunit

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