feat(F-193): completed feature

project/migrations/057_product_variant_weight_and_expiry.js

@@ -0,0 +1,25 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+'use strict';
+
+/**
+ * F-193: Adds `weight_grams` to catalog_product_variants.
+ * Authoritative per-variant shipping weight in grams.
+ * Defaults to NULL (fallback to product-level unit_weight_kg in checkout).
+ * Note: expiration_date already exists on catalog_products (migration 038).
+ */
+exports.up = function (db) {
+  return db.addColumn('catalog_product_variants', 'weight_grams', {
+    type: 'integer',
+    notNull: false,
+    default: null,
+    check: 'weight_grams IS NULL OR weight_grams > 0',
+  }, 'ean');
+};
+
+exports.down = function (db) {
+  return db.removeColumn('catalog_product_variants', 'weight_grams');
+};
+
+exports._meta = {
+  version: 57,
+};