docs: add JSDoc headers to all externally exported store functions

src/store/article/setWeightBySku.js

@@ -2,6 +2,17 @@ import { UPDATE_WEIGHT } from '../../sql/article.js';
 import queryBySku from './queryBySku.js';
 import resolveArticleBySku from './resolveArticleBySku.js';
 
+/**
+ * Sets the weight of an article by its SKU.
+ *
+ * @param {object} pool - The mssql connection pool.
+ * @returns {Function} An async function that sets the article weight.
+ *
+ * @example
+ * const fn = setWeightBySku(pool);
+ * const article = await fn(42, 'SKU-1', 1.5);
+ * // => { id, sku, name, ... }
+ */
 export default function setWeightBySku(pool) {
   const resolve = resolveArticleBySku(pool);
   const load = queryBySku(pool);