feat: migrate to PSR-4, tests, and CI scaffold

[richard015ar]

Issue: https://github.com/pressbooks/private/issues/2419

Shortcode Handler had no dev tooling at all — no linter, no tests, no CI beyond Crowdin. This adds the standard Pressbooks build setup (Pint + PHPUnit

• the shared test workflow) so it's held to the same bar as the other plugins, without changing any shortcode behavior.

What changed

• Adds Laravel Pint (PSR-12) with a pint.json, plus fix / standards composer scripts.
• Adds a PHPUnit config and a tests/ suite (bootstrap + sanity tests covering the registered shortcodes and two of the handlers).
• Adds a tests.yml workflow using the shared pb-plugin-tests.yml, plus a Dependabot config and bin/install-wp-tests.sh.
• Declares php ^8.3 with config.platform.php pinned to 8.3 so the lock stays valid across the CI matrix. The plugin is procedural, so no autoload is added.

How to test

1. lando composer standards — Pint clean.
2. lando composer test — all 3 tests pass.
3. In a book, render [reveal-answer]Show[/reveal-answer][hidden-answer]Answer[/hidden-answer] and confirm the <details> markup.

[private-packagist]

composer.lock

Package changes

Package	Operation	From	To	About
composer/installers	add	-	v2.3.0	view code - License: MIT License

Dev Package changes

Package	Operation	From	To	About
doctrine/instantiator	add	-	2.0.0	view code - License: MIT License
laravel/pint	add	-	v1.30.5	view code - License: MIT License
myclabs/deep-copy	add	-	1.13.4	view code - License: MIT License
nikic/php-parser	add	-	v5.8.0	view code - License: BSD 3-Clause "New" or "Revised" License
phar-io/manifest	add	-	2.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
phar-io/version	add	-	3.2.1	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/php-code-coverage	add	-	9.2.32	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/php-file-iterator	add	-	3.0.6	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/php-invoker	add	-	3.1.1	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/php-text-template	add	-	2.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/php-timer	add	-	5.0.3	view code - License: BSD 3-Clause "New" or "Revised" License
phpunit/phpunit	add	-	9.6.35	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/cli-parser	add	-	1.0.2	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/code-unit	add	-	1.0.8	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/code-unit-reverse-lookup	add	-	2.0.3	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/comparator	add	-	4.0.10	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/complexity	add	-	2.0.3	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/diff	add	-	4.0.6	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/environment	add	-	5.1.5	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/exporter	add	-	4.0.8	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/global-state	add	-	5.0.8	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/lines-of-code	add	-	1.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/object-enumerator	add	-	4.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/object-reflector	add	-	2.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/recursion-context	add	-	4.0.6	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/resource-operations	add	-	3.0.4	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/type	add	-	3.2.1	view code - License: BSD 3-Clause "New" or "Revised" License
sebastian/version	add	-	3.0.2	view code - License: BSD 3-Clause "New" or "Revised" License
theseer/tokenizer	add	-	1.3.1	view code - License: BSD 3-Clause "New" or "Revised" License
yoast/phpunit-polyfills	add	-	1.1.5	view code - License: BSD 3-Clause "New" or "Revised" License

---

Settings · Docs · Powered by Private Packagist

[codecov-commenter]

Welcome to Codecov 🎉

Once you merge this PR into your default branch, you're all set! Codecov will compare coverage reports and display results in all future pull requests.

Thanks for integrating Codecov - We've got you covered ☂️