feat(8.0): validateBackup() dry-run + includeContent blob round-trip test + clone test
- validateBackup(data) → { valid, errors, warnings }: structural check, supported
formatVersion, entity-id uniqueness + required fields, relation-endpoint coverage.
Lets consumers (e.g. a serializer checking a .wbench graph) validate before import()
without mutating the brain. Exported from the package root.
- Tests: validateBackup cases, remapIds clone (copy-not-move), and the includeContent
VFS-blob filesystem round-trip (export captures bytes → import writes them).
Completes the #196 export/import surface for the showcase bar (deferred to 8.0.x:
since(prior).export() delta convenience, exportStream/importStream NDJSON).
David Snelling
7aad80395e