fix: created a migration to add an index on the code column in the TransactionDetails table

Author: mschead

indexer/migrations/20250822193320-add-code-index-for-transactions.js

@@ -0,0 +1,14 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface) {
+    await queryInterface.sequelize.query(
+      'CREATE INDEX transactiondetails_code_gin_idx ON public."TransactionDetails" USING gin (code);',
+    );
+  },
+
+  async down(queryInterface) {
+    await queryInterface.sequelize.query('DROP INDEX IF EXISTS transactiondetails_code_gin_idx;');
+  },
+};