Hey everybody ! Eng question here: I'm using SpiceDB + Google Spanner . I can access relationships using spicedb client/zed or just open table in the Spanner. I'm assuming there is significant difference on how to add/delete rel.tuples. I could add/delete them via Spanner(just SQL), but in that case all of the advantages of SpiceDB would be lost (e.g. caching, vector search) . Am I correct?