The minimum set of epochs a client must retain to replay candidate branches
inside the rollback horizon: every epoch from tip - maxRewindCommits (floored
at 0) through the current tip. Staged-commit and deferred-parent states are
additional and tracked separately by the caller.
The minimum set of epochs a client must retain to replay candidate branches inside the rollback horizon: every epoch from
tip - maxRewindCommits(floored at 0) through the current tip. Staged-commit and deferred-parent states are additional and tracked separately by the caller.