feat: prepare ARR for controlled public deployment

database/007_report_channel_facts_view.down.sql

@@ -0,0 +1,8 @@
+-- Guarded rollback for migration 007.
+-- Removing the view does not delete stored facts or report versions.
+
+BEGIN;
+
+DROP VIEW IF EXISTS finance.v_report_channel_facts;
+
+COMMIT;