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/function/after.d.ts

@@ -0,0 +1,25 @@
+//#region src/compat/function/after.d.ts
+/**
+ * The opposite of `_.before`; this method creates a function that invokes
+ * `func` once it's called `n` or more times.
+ *
+ * @template TFunc - The type of the function to be invoked.
+ * @param n - The number of calls before `func` is invoked.
+ * @param func - The function to restrict.
+ * @returns Returns the new restricted function.
+ * @throws {TypeError} - If `func` is not a function.
+ *
+ * @example
+ * const saves = ['profile', 'settings'];
+ * const done = after(saves.length, () => {
+ *   console.log('done saving!');
+ * });
+ *
+ * saves.forEach(type => {
+ *   asyncSave({ 'type': type, 'complete': done });
+ * });
+ * // => Logs 'done saving!' after the two async saves have completed.
+ */
+declare function after<TFunc extends (...args: any[]) => any>(n: number, func: TFunc): TFunc;
+//#endregion
+export { after };