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/function/ary.d.ts

@@ -0,0 +1,22 @@
+//#region src/function/ary.d.ts
+/**
+ * Creates a function that invokes func, with up to n arguments, ignoring any additional arguments.
+ *
+ * @template F - The type of the function.
+ * @param func - The function to cap arguments for.
+ * @param n - The arity cap.
+ * @returns Returns the new capped function.
+ *
+ * @example
+ * function fn(a: number, b: number, c: number) {
+ *   return Array.from(arguments);
+ * }
+ *
+ * ary(fn, 0)(1, 2, 3) // []
+ * ary(fn, 1)(1, 2, 3) // [1]
+ * ary(fn, 2)(1, 2, 3) // [1, 2]
+ * ary(fn, 3)(1, 2, 3) // [1, 2, 3]
+ */
+declare function ary<F extends (...args: any[]) => any>(func: F, n: number): (...args: any[]) => ReturnType<F>;
+//#endregion
+export { ary };