- New docs/guides/export-and-import.md (public) for the 8.0 surface:
brain.export()/import(), Db composition (asOf/with time-travel + what-if export),
selectors, options, BackupData v1 format, cross-version (7.x→8.0), VFS, and the
generations/persist distinction. Documents only the implemented surface.
- api/README "Export & Import (portable) + Snapshots (native)": adds the portable
brain.export()/import() round-trip alongside the native persist()/asOf() snapshot.
