T020

An existing test deleted, skipped, marked .fails, or with an assertion removed or loosened (toBe(3) → toBeTruthy()).

Fix: Restore it, or keep the change with // kerf-allow T020: <reason> on that test.

Status in kerf@0.1.0: reported by kerf test --gate on a diff.

A test that needs it on purpose keeps it with a reason: // kerf-allow T020: <why> in the file header (whole file) or on the line above.