D8 — Tests on Postgres — approach pending testing.md synthesis
Architecture decision record, relocated verbatim from the retired single-file
docs/tenancy/decision log. Status, thematic clusters, and how to record a new ADR: the decision log index.
Tenant-isolation tests (create as tenant A, query as tenant B, assert empty) require Postgres + the RLS role. Decision on whether to move the entire suite to Postgres vs a dedicated tenancy test group recorded after reviewing the tenancy testing reference.