Launch gate (design doc §5/§8) requires automated tests for both; the repo
had zero test infra until now. PHPUnit + Brain Monkey, run via `make test`
against the existing wordpress dev container.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MqhgnCRjjVLFnZ3Jpn93Vg
