# Recovery NineLives maintains durable session events and checkpoints. Recovery behavior includes: - restart reconciliation; - uncertain-action detection; - preserved isolated worktrees; - session resume; - manual checkpoints; - isolated rollback; - partial-output preservation after cancellation; - lease-conflict handling. Interrupted actions are not automatically replayed. When the runtime cannot prove whether an action completed, it marks the result as uncertain and requires review. ## Resume ```bash purrcode resume ``` Resumes a paused plan in the same session. `purrcode resume --tui` reattaches the terminal Workbench. ## Rollback ```bash purrcode rollback ``` Rolls back isolated work. Rollback requires an exact preview digest and explicit acknowledgement of any unattributed effects; invalid event append or replay fails loudly. ## Recovery evidence The repository's [recovery documentation](https://github.com/Weilin0723/PurrCode/blob/main/docs/recovery.md) and [troubleshooting guide](https://github.com/Weilin0723/PurrCode/blob/main/docs/troubleshooting.md) cover durable state and failure behavior in detail.