Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/es-abstract/2025/IteratorStepValue.js

@@ -0,0 +1,32 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var IteratorStep = require('./IteratorStep');
+var IteratorValue = require('./IteratorValue');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/16.0/#sec-iteratorstepvalue
+
+module.exports = function IteratorStepValue(iteratorRecord) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record');
+	}
+
+	var result = IteratorStep(iteratorRecord); // step 1
+	if (!result || result === 'DONE') { // step 2
+		return result; // step 2.a
+	}
+
+	var value;
+	try {
+		value = IteratorValue(result); // step 3
+	} catch (e) { // step 4
+		// eslint-disable-next-line no-param-reassign
+		iteratorRecord['[[Done]]'] = true; // step 4.a
+		throw e; // step 5
+	}
+
+	return value; // step 5
+};