Agent-memory rows: deleted by their salted thread_id.
Agent-inbox rows, ranged over their tenant-salted thread_id.
Agent-memory rows: salted resource ids (working memory).
Schedule rows, metadata-filtered on their metadata.tenantId.
Schedule-trigger rows, metadata-filtered on their metadata.tenantId.
Signal-subscription rows, filtered by the tenant_id column.
Agent-memory rows (docs/agent-memory-tenancy.md): salted thread ids.
Thread-state rows (state lanes + goals), ranged over thread_id.
Background-task rows, ranged over their tenant-salted
run_id.