Define a checkpoint stable view and document how shared-table access works in disaggregated mode: leaders use live, writable stable trees, while followers bind to read-only, checkpoint-suffixed stable handles and layer local ingest over them. Explain how these components work and how they interact.

The document can also cover checkpoint pickup and adoption, including deferral while readers are using older views, catching up during step-up, and advancing the ingest prune timestamp only after older views are no longer in use.

After creating the page, please also update any existing documentation where a reference to the new page would be useful.