v7.64.1

Pairs with engine-service-v0.1.137, already deployed. A client-only fix: no engine or wire change.

Fixed

• nx store import no longer aborts on a collection whose name's owner segment is not a tumbler (nexus-wbfpw.33). 7.64.0 worked out the owner of an import-registered document by parsing the collection name's owner segment, so code__arcaneum-2ad2825c__voyage-code-3__v1 failed with "cannot resolve an owner tumbler", and so did a name whose model segment does not parse. The owner now comes from the catalog: the collection row's owner when it is a registered owner, otherwise the owner of a live document already in the collection, otherwise the knowledge curator. Re-running an import that failed this way is safe.