fix: support brianium/paratest 7.26.1 worker tmp dir

[ExeQue]

What:

• Bug Fix
• New Feature

Description:

brianium/paratest v7.26.1 (paratestphp/paratest#1148) added a required string $tmpDir argument to WrapperWorker::__construct(), so every --parallel run fails with ArgumentCountError.

This ports the same change to Pest's WrapperRunner:

• Create a private 0700 directory per run ({tmpDir}/pest_<random hex>) and pass it to each WrapperWorker.
• mkdir is intentionally not followed by an is_dir() fallback: a pre-existing path may have been planted by another user, and the main process deserializes/includes worker files from it.
• Remove the directory in complete() after the worker files are cleared.
• Require brianium/paratest: ^7.26.1.

Only 5.x is affected: paratest 7.26.1 requires phpunit/phpunit ^13.4.1, which 3.x and 4.x cannot resolve.

Note: Tests\Features\Tia > it does not run user hooks when replaying cached skipped and incomplete results fails intermittently under composer test:parallel on a clean 5.x with paratest 7.26.0 as well; it is unrelated to this change.

Related:

Fixes #1958

[ExeQue]

@nunomaduro @MrPunyapal could one of you approve the CI workflows for this PR? Since brianium/paratest v7.26.1, every Pest 5 project that installs without a composer.lock (e.g. most package CI matrices) fails on --parallel with ArgumentCountError. A patch release once this is merged would unblock them.

[ExeQue]

The Tests failure is unrelated to this change: PHP 8.5 - Symfony ^8.0 - macos-latest fails in the Setup PHP step (✗ PHP Could not setup PHP 8.5 from shivammathur/setup-php) before Pest is installed (job). The scheduled 5.x runs have failed in the same job and step since 2026-10-08 (latest).

PHP 8.5 - ubuntu-latest passes, including test:parallel and test:integration. The PHP 8.4 jobs were cancelled by fail-fast. Could you re-run the failed and cancelled jobs once the macOS runner is fixed?

[ExeQue]

@MrPunyapal heads-up: the macos-latest runner is currently broken for PHP 8.5. shivammathur/setup-php fails with ✗ PHP Could not setup PHP 8.5 in the Setup PHP step, before Pest is installed. The scheduled 5.x runs have failed the same way since 2026-10-08, so every PR's Tests workflow fails and fail-fast cancels the remaining jobs.

Could you re-run the failed and cancelled jobs on this PR once the runner is fixed? PHP 8.5 - ubuntu-latest already passes.

[nunomaduro]

thank you! can you check the failing tests?

[ExeQue]

@nunomaduro no test fails: the only failing job is PHP 8.5 - Symfony ^8.0 - macos-latest, and it fails in the Setup PHP step before Pest is installed. The macos-latest runner cannot set up PHP 8.5 (✗ PHP Could not setup PHP 8.5 from shivammathur/setup-php); the scheduled 5.x runs have failed the same way since 2026-10-08.

PHP 8.5 - ubuntu-latest passes, including test:parallel and test:integration. The PHP 8.4 jobs never ran: fail-fast cancels them when the macOS job fails. Locally, the full composer test passes.