Add Plugin Check workflow and remove local plugin-check dependency

Port changes from WordPress/ai#139 to transition from the local
wpackagist-plugin/plugin-check dependency to the official
wordpress/plugin-check-action GitHub Action.

- Add .github/workflows/plugin-check.yml.
- Remove wpackagist-plugin/plugin-check from composer.json.
- Remove related rules from tools/phpcs/phpcs.ruleset.xml.
- Add PHPCS exclusion for object-cache.copy.php filename to allow drop-in naming.

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: westonruter

.github/workflows/plugin-check.yml

@@ -0,0 +1,71 @@
+name: Plugin Check
+
+on:
+    workflow_dispatch:
+    push:
+        branches:
+            - develop
+            - trunk
+    pull_request:
+        types:
+            - opened
+            - synchronize
+            - ready_for_review
+
+# Cancels all previous workflow runs for pull requests that have not completed.
+concurrency:
+    # The concurrency group contains the workflow name and the branch name for pull requests
+    # or the commit hash for any other events.
+    group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
+    cancel-in-progress: true
+
+# Disable permissions for all available scopes by default.
+# Any needed permissions should be configured at the job level.
+permissions: {}
+
+jobs:
+    plugin-check:
+        name: PHP ${{ matrix.php }} - WP ${{ matrix.wordpress }}
+        runs-on: 'ubuntu-24.04'
+        permissions:
+            contents: read
+        timeout-minutes: 20
+        strategy:
+            fail-fast: true
+            matrix:
+                php:
+                    - '8.3' # Currently the wordpress/plugin-check-action always uses the latest PHP version anyway.
+                wordpress: ['latest'] # Currently the wordpress/plugin-check-action only supports 'latest' or 'trunk'.
+        steps:
+            - uses: actions/checkout@v4
+
+            - uses: shivammathur/setup-php@v2
+              with:
+                  php-version: ${{ matrix.php }}
+
+            - name: Install Composer dependencies
+              run: composer install
+
+            - name: Setup Node.js (.nvmrc)
+              uses: actions/setup-node@v4
+              with:
+                  node-version-file: '.nvmrc'
+                  cache: npm
+
+            - name: npm install
+              run: npm ci
+
+            - name: Build assets
+              run: npm run build
+
+            - name: Run plugin check
+              uses: wordpress/plugin-check-action@v1
+              with:
+                  wp-version: ${{ matrix.wordpress }}
+                  # Exclude file_type because of the dev files present in the repository.
+                  exclude-checks: |
+                      file_type
+                  exclude-directories: |
+                      .github
+                      docs
+                      tests

composer.json

@@ -20,22 +20,7 @@
     "ext-gd": "Required to use Modern Image Format's Dominant_Color_Image_Editor_GD class",
     "ext-zlib": "Required for compression of URL Metric data submitted to the REST API for storage in Optimization Detective"
   },
-  "repositories":[
-    {
-      "type":"composer",
-      "url":"https://wpackagist.org",
-      "only": [
-        "wpackagist-plugin/*",
-        "wpackagist-theme/*"
-      ]
-    }
-  ],
   "extra": {
-    "installer-paths": {
-      "vendor/{$vendor}/{$name}/": [
-        "wpackagist-plugin/plugin-check"
-      ]
-    }
   },
   "require-dev": {
     "phpcompatibility/php-compatibility": "^9.3",
@@ -50,8 +35,7 @@
     "wp-phpunit/wp-phpunit": "^6.5",
     "yoast/phpunit-polyfills": "^4.0",
     "phpstan/php-8-stubs": "^0.4.0",
-    "phpstan/phpstan-strict-rules": "^1.6",
-    "wpackagist-plugin/plugin-check": "^1.6"
+    "phpstan/phpstan-strict-rules": "^1.6"
   },
   "config": {
     "allow-plugins": {

composer.lock

@@ -2,9 +2,6 @@
 <ruleset name="WPP-Base" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
 	<description>Sniffs for WordPress plugins</description>
 
-	<rule ref="../../vendor/wpackagist-plugin/plugin-check/vendor/plugin-check/phpcs-sniffs/PluginCheck/ruleset.xml" />
-	<rule ref="../../vendor/wpackagist-plugin/plugin-check/phpcs-rulesets/plugin-check.ruleset.xml"/>
-
 	<rule ref="PHPCompatibility"/>
 	<config name="testVersion" value="7.2-"/>
 
@@ -73,6 +70,10 @@
 		<exclude-pattern>./plugins/*/tests/**</exclude-pattern>
 	</rule>
 
+	<rule ref="WordPress.Files.FileName.NotHyphenatedLowercase">
+		<exclude-pattern>plugins/performance-lab/includes/server-timing/object-cache.copy.php</exclude-pattern>
+	</rule>
+
 	<!-- Exceptions for variable name casing. -->
 	<rule ref="WordPress.NamingConventions.ValidVariableName">
 		<properties>
@@ -122,9 +123,6 @@
 		<exclude name="SlevomatCodingStandard.TypeHints.PropertyTypeHint.MissingTraversableTypeHintSpecification" /><!-- TODO: Investigate this -->
 	</rule>
 
-	<rule ref="PluginCheck.CodeAnalysis.Offloading.OffloadedContent">
-		<exclude-pattern>./plugins/*/tests/**</exclude-pattern>
-	</rule>
 	<rule ref="Squiz.PHP.DiscouragedFunctions.Discouraged">
 		<exclude-pattern>./plugins/*/tests/**</exclude-pattern>
 	</rule>