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/methodOf.d.mts

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