Upgrade test suite to Pest 5

[klaasnicolaas]

Summary

• upgrade Pest and maintained plugins to Pest 5 on PHPUnit 13
• add the Pest Agent, PHPStan, and Rector plugins and modernize the existing test suite
• include tests in PHPStan analysis and enforce Pest Rector checks in CI
• configure TIA with a shared GitHub Actions baseline
• add ddev tia to securely bridge host GitHub authentication and temporary Xdebug coverage into DDEV
• adopt Pest 5 expectations such as toBeEmail(), toBeFile(), toHaveSameSize(), and toContainOnlyInstancesOf()

Why

Pest 5 provides first-party test impact analysis, stronger static analysis, automated test refactoring, agent verification, and new expectations. This upgrade adopts those capabilities while preserving the existing Laravel, feature, and browser test coverage.

Developer impact

• use composer test for the complete PHP quality pipeline
• use composer test:browser for the Chromium suite
• use ddev tia for affected-test runs backed by the shared pest-tia-baseline workflow artifact
• the TIA baseline workflow runs after changes reach main, daily, or via manual dispatch

Validation

• composer test — 349 tests passed, 3,442 assertions
• composer test:browser — 56 tests passed, 854 assertions
• PHPStan — 0 errors, including tests
• Rector dry run — no pending changes
• Pint — passed
• Composer validation — passed
• Pest Agent one-shot verification — passed
• DDEV TIA wrapper syntax and Xdebug lifecycle — passed

[Copilot]

Pull request overview

Upgrades the PHP test stack to Pest 5 + PHPUnit 13 and wires in first-party tooling (TIA, Agent, PHPStan, Rector) so tests, static analysis, and CI pipelines align with the new ecosystem.

Changes:

• Upgrade to Pest 5 / PHPUnit 13 and modernize existing Pest expectations across the suite.
• Enable Test Impact Analysis (TIA) with a dedicated baseline workflow and shared artifact usage.
• Add/enable quality tooling: Pest Agent plugin, PHPStan (including tests), and Rector (Pest coding style set) with CI checks.

Reviewed changes

Copilot reviewed 38 out of 39 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/TestCase.php	Adds pendingArtisan() helper for tests requiring PendingCommand.
tests/Pest.php	Keeps Feature/Browser on Tests\TestCase + RefreshDatabase; enables TIA config.
tests/Feature/Settings/ProfileUpdateTest.php	Updates expectations to Pest 5 chaining and toBeEmail().
tests/Feature/SeasonModelTest.php	Adjusts expectation chaining (and(...)) for Pest 5 style.
tests/Feature/PublicProjectPagesTest.php	Refactors Inertia prop handling for the projects list.
tests/Feature/PublicGettingStartedPageTest.php	Uses new expectations (toHaveSameSize(), toBeFile()).
tests/Feature/PublicEventPagesTest.php	Refines Inertia assertions and adds stricter callback typing.
tests/Feature/ProjectCatalogueTest.php	Uses toContainOnlyInstancesOf() for catalogue assertions.
tests/Feature/PartnerCatalogueTest.php	Uses toContainOnlyInstancesOf() and toBeEmpty() expectations.
tests/Feature/MediaAssetModelTest.php	Converts chained property expectations to and(...) style.
tests/Feature/MakeAdminUserCommandTest.php	Switches to pendingArtisan() and adds toBeEmail() assertion.
tests/Feature/LocationModelTest.php	Uses and(...) + nullsafe access in relationship assertions.
tests/Feature/EventModelTest.php	Refactors relationship assertions into and(...) chain.
tests/Feature/DevelopmentEventSeederTest.php	Switches to pendingArtisan() and tightens snapshot/id helpers typing.
tests/Feature/ContactTest.php	Adds toBeEmail() assertion to contact submission checks.
tests/Feature/ArticleModelTest.php	Refactors relationship assertions into a single chained expectation.
tests/Feature/AdminUserManagementTest.php	Improves payload helper PHPDoc/typing and null handling.
tests/Feature/AdminSeasonManagementTest.php	Improves payload helper PHPDoc typing.
tests/Feature/AdminMediaManagementTest.php	Adjusts fake upload MIME typing and payload helper PHPDoc typing.
tests/Feature/AdminLocationManagementTest.php	Improves payload helper PHPDoc typing.
tests/Feature/AdminEventManagementTest.php	Improves payload helper PHPDoc typing.
tests/Feature/AdminArticleManagementTest.php	Refactors expectations and improves payload helper PHPDoc typing.
tests/Browser/AdminMediaLibraryTest.php	Tightens browser helper typing for Pest Browser API.
rector.php	Adds Rector config to enforce Pest coding style on tests.
phpstan.neon	Enables Pest PHPStan extension and includes tests/ in analysis.
composer.json	Upgrades Pest dependencies, adds Agent/PHPStan/Rector, adds scripts for rector + tia.
composer.lock	Locks upgraded dependency graph for Pest 5/PHPUnit 13 and added tooling.
CLAUDE.md	Updates documented tool versions and adds Pest Agent guidance.
AGENTS.md	Updates documented tool versions and adds Pest Agent guidance.
boost.json	Registers the Pest Agent package and skill for the agent environment.
.github/workflows/tia-baseline.yml	Adds workflow to generate and upload the shared TIA baseline artifact.
.github/workflows/tests.yml	Runs CI coverage via ./vendor/bin/pest instead of php artisan test.
.github/workflows/lint.yml	Adds CI check to enforce rector (test refactoring) dry-run.
.github/skills/pest-testing/SKILL.md	Updates skill docs from Pest 4 to Pest 5 (incl. TIA/sharding).
.github/skills/pest-plugin-agent/SKILL.md	Adds new skill doc for Pest Agent one-shot verification.
.ddev/config.yaml	Adds gh to the DDEV web image packages to support host-driven TIA auth flow.
.ddev/commands/host/tia	Adds ddev tia wrapper to bridge GH auth + Xdebug coverage into the container.
.claude/skills/pest-testing/SKILL.md	Mirrors Pest 5 skill doc updates for Claude skill set.
.claude/skills/pest-plugin-agent/SKILL.md	Mirrors Pest Agent skill doc for Claude skill set.

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