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/method.d.ts

@@ -0,0 +1,23 @@
+//#region src/compat/util/method.d.ts
+/**
+ * Creates a function that invokes the method at `path` of a given object with the provided arguments.
+ *
+ * @param path - The path of the method to invoke.
+ * @param args - The arguments to invoke the method with.
+ * @returns Returns a new function that takes an object and invokes the method at `path` with `args`.
+ *
+ * @example
+ * const object = {
+ *   a: {
+ *     b: function (x, y) {
+ *       return x + y;
+ *     }
+ *   }
+ * };
+ *
+ * const add = method('a.b', 1, 2);
+ * console.log(add(object)); // => 3
+ */
+declare function method(path: PropertyKey | readonly PropertyKey[], ...args: any[]): (object: any) => any;
+//#endregion
+export { method };