docs: add JSDoc headers to all externally exported store functions

src/store/company/delete.js

@@ -1,5 +1,15 @@
 import { DELETE } from '../../sql/company.js';
 
+/**
+ * Deletes a company by its id.
+ *
+ * @param {object} pool - The mssql connection pool.
+ * @returns {Function} An async function that deletes a company.
+ *
+ * @example
+ * const fn = del(pool);
+ * await fn(1);
+ */
 export default function del(pool) {
   return async (companyId) => {
     await pool