Copy (and adapt) .github folder

.github/PULL_REQUEST_TEMPLATE.md

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+| Q              | A
+| -------------- | ---
+| Bug fix?       | yes/no
+| New feature?   | yes/no
+| Issues         | Fix #... <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
+| License        | MIT
+
+<!--
+Replace this notice by a description of your feature/bugfix.
+This will help reviewers and should be a good start for the documentation.
+
+Additionally (see https://symfony.com/releases):
+ - Always add tests and ensure they pass.
+ - For new features, provide some code snippets to help understand usage.
+ - Features and deprecations must be submitted against branch main.
+ - Update/add documentation as required (we can help!)
+ - Changelog entry should follow https://symfony.com/doc/current/contributing/code/conventions.html#writing-a-changelog-entry
+ - Never break backward compatibility (see https://symfony.com/bc).
+-->

.github/workflows/fabbot.yaml

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+name: Fabbot
+
+on:
+    pull_request:
+
+permissions:
+    contents: read
+
+jobs:
+    call-fabbot:
+        name: Fabbot
+        uses: symfony-tools/fabbot/.github/workflows/fabbot.yml@main
+        with:
+            package: Symfony UX
+            check_license: true

.github/workflows/tests.yaml

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+name: Tests
+
+jobs:
+    tests:
+        runs-on: ubuntu-latest
+        defaults:
+            run:
+                shell: bash
+        steps:
+            -   uses: actions/checkout@v4
+
+            -   uses: shivammathur/setup-php@v2
+                with:
+                    php-version: '8.5'
+
+            -   name: Install root dependencies
+                uses: ramsey/composer-install@v3
+                with:
+                    working-directory: ${{ github.workspace }}
+
+            -   name: Install dependencies
+                uses: ramsey/composer-install@v3
+                with:
+                    working-directory: ux.symfony.com
+                    dependency-versions: 'highest'
+
+            -   name: Importmap dependencies
+                run: php bin/console importmap:install
+
+            -   name: Build Sass assets
+                run: php bin/console sass:build
+
+            -   name: Tests
+                run: vendor/bin/phpunit

.php-cs-fixer.dist.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+$fileHeaderParts = [
+    <<<'EOF'
+        This file is part of the Symfony package.
+
+        (c) Fabien Potencier <fabien@symfony.com>
+
+        EOF,
+    <<<'EOF'
+
+        For the full copyright and license information, please view the LICENSE
+        file that was distributed with this source code.
+        EOF,
+];
+
+return (new PhpCsFixer\Config())
+    ->setParallelConfig(PhpCsFixer\Runner\Parallel\ParallelConfigFactory::detect())
+    ->setRules([
+        '@PHP8x1Migration' => true, // take lowest version from `git grep -h '"php"' **/composer.json | uniq | sort`
+        '@PHPUnit9x1Migration:risky' => true,
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+        'header_comment' => [
+            'header' => implode('', $fileHeaderParts),
+            'validator' => implode('', [
+                '/',
+                preg_quote($fileHeaderParts[0], '/'),
+                '(?P<EXTRA>.*)??',
+                preg_quote($fileHeaderParts[1], '/'),
+                '/s',
+            ]),
+        ],
+    ])
+    ->setRiskyAllowed(true)
+    ->setFinder((new PhpCsFixer\Finder())
+        ->in(__DIR__)
+        ->append([__FILE__])
+        ->notPath('#/Fixtures/#')
+        ->notPath('#/assets/#')
+        ->notPath('#/var/#')
+        // apps/
+        ->notPath(['#config/#', '#public/#', 'importmap.php'])
+    )
+;