`[2026-06-18]` **Fixed a pre-existing test-isolation bug exposed by the #17 CLI tests** (`0bebad7`): `test_no_textual_import` did a live `importlib.reload(ratatoskr.cli)` that mutated the shared module in place, breaking class identity (`isinstance`/`pytest.raises`) for every test ordered after it. The real check is the static source-grep; the reload was vestigial → removed. Lesson: never `importlib.reload` a shared module in a test without restoring it.