- Create `tests/nostr/dmDecryptWorkerClient.test.mjs` to test `decryptDmInWorker`.
- Implement `MockWorker` to simulate worker behavior in `node:test`.
- Cover scenarios: success, error response, error event, timeout, invalid input, and worker availability.
- Use dynamic imports with cache busting to reset singleton state between tests.
- Ensure `devLogger` warnings are verified by mocking `console.warn` correctly.
Co-authored-by: PR0M3TH3AN <[email protected]>