A renewal rotates the token server-side before the response is sent. When
that response is lost the client only knows the superseded token: retries
mismatched, the token was cleared, and the holder conflicted with its own
lease until it expired. The lock now remembers the superseded token, so a
retry from the same owner replays the current token, and a superseded
token can still release its own lock.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
