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-toolkit/dist/object/mapKeys.js

@@ -0,0 +1,30 @@
+//#region src/object/mapKeys.ts
+/**
+* Creates a new object with the same values as the given object, but with keys generated
+* by running each own enumerable property of the object through the iteratee function.
+*
+* @template T - The type of the object.
+* @template K - The type of the new keys generated by the iteratee function.
+*
+* @param object - The object to iterate over.
+* @param getNewKey - The function invoked per own enumerable property.
+* @returns Returns the new mapped object.
+*
+* @example
+* // Example usage:
+* const obj = { a: 1, b: 2 };
+* const result = mapKeys(obj, (value, key) => key + value);
+* console.log(result); // { a1: 1, b2: 2 }
+*/
+function mapKeys(object, getNewKey) {
+	const result = {};
+	const keys = Object.keys(object);
+	for (let i = 0; i < keys.length; i++) {
+		const key = keys[i];
+		const value = object[key];
+		result[getNewKey(value, key, object)] = value;
+	}
+	return result;
+}
+//#endregion
+exports.mapKeys = mapKeys;