groceries: nightly AH/Jumbo catalogue import, unit-price normalisation, product groups and compare UI

drizzle/20261024134401_groceries_drop_manual/migration.sql

@@ -0,0 +1,11 @@
+ALTER TABLE "groceries"."prices" DROP CONSTRAINT "prices_product_id_products_id_fkey";--> statement-breakpoint
+DROP TABLE "groceries"."prices";--> statement-breakpoint
+DROP TABLE "groceries"."products";--> statement-breakpoint
+-- The hand-entered products/prices tables were never used (0 rows); replaced by store items
+-- and groups in the next migration. Unregister them from the /lists database browser.
+DO $$
+BEGIN
+  IF to_regclass('meta.tables') IS NOT NULL THEN
+    DELETE FROM meta.tables WHERE schema_name = 'groceries' AND table_name IN ('products','prices');
+  END IF;
+END $$;