- Add US-10 backup/restore test section to test-cross-node.sh - Test cycle: create → list → verify → delete, 10 iterations × 2 nodes - Increase backup.create rate limit from 3/600 to 10/600 (still conservative) - Increase backup.restore rate limit from 2/600 to 5/600 - Clean up 21K+ stale DWN test messages on both servers Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>