chore: establish local platform baseline

migrations/000031_context_preparation_status.down.sql

@@ -0,0 +1,9 @@
+BEGIN;
+
+ALTER TABLE context_snapshot
+    DROP CONSTRAINT context_snapshot_preparation_failure_check,
+    DROP CONSTRAINT context_snapshot_preparation_status_check,
+    DROP COLUMN preparation_failure_code,
+    DROP COLUMN preparation_status;
+
+COMMIT;