brain.data() now serializes part or all of a brain to a versioned, portable
JSON document (BackupData) and restores it — the path for partial backups,
cross-environment moves, and 7.x→8.0 migration.
- export(selector?, options?): select by ids, collection (+transitive Contains),
connected neighbourhood, vfsPath subtree, predicate, or whole brain; structural
and predicate selectors compose. Options: includeVectors, includeContent (VFS
blobs), includeSystem, edges ('induced'|'incident'|'none').
- import(backup, options?): onConflict 'merge' (dedup-by-id) | 'replace' | 'skip';
reembed 'auto' (re-embed from data when no vector carried) | 'never'; remapIds
to clone a subgraph under fresh ids.
- BackupData v1: format/formatVersion/brainyVersion/createdAt/embedding/entities/
relations/blobs?/danglingIds?/stats. Reserved fields (subtype, data, confidence,
weight, service) top-level; metadata custom-only. Current-state, no generations.
- Replaces the prior flat-entity export() (dropped relations) with a graph-complete
document. Distinct from brain.import(file) ingestion, which is unchanged.
- Export BackupData/BackupEntity/BackupRelation/ExportSelector/ExportOptions/
ImportOptions/ImportResult/DataAPI from the package root. CLI `brainy export`
now writes a BackupData document.
Guide: docs/guides/backup-and-export.md. Tests: tests/unit/api/data-backup.test.ts.
