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/compat/util/invoke.d.ts

@@ -0,0 +1,24 @@
+//#region src/compat/util/invoke.d.ts
+/**
+ * Invokes the method at `path` of `object` with the given arguments.
+ *
+ * @param object - The object to query.
+ * @param path - The path of the method to invoke.
+ * @param args - The arguments to invoke the method with.
+ * @returns Returns the result of the invoked method.
+ *
+ * @example
+ * const object = {
+ *   a: {
+ *     b: function (x, y) {
+ *       return x + y;
+ *     }
+ *   }
+ * };
+ *
+ * invoke(object, 'a.b', [1, 2]); // => 3
+ * invoke(object, ['a', 'b'], [1, 2]); // => 3
+ */
+declare function invoke(object: any, path: PropertyKey | readonly PropertyKey[], ...args: any[]): any;
+//#endregion
+export { invoke };