Feature Request: Persistent Savepoints

Feature Request: Persistent Savepoints: a task in LegoFlow-SWE (Harbor dataset). Currently, redb supports savepoints within a write transaction, but they are ephemeral: once the database is closed and reopened, all savepoints are lost. This prevents use cases that require durable rollback points…

The task

Currently, `redb` supports savepoints within a write transaction, but they are ephemeral: once the database is closed and reopened, all savepoints are lost. This prevents use cases that require durable rollback points, such as distributed consensus where cluster members must recover a specific database state after…

Part of Lego-X/LegoFlow-SWE.