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.js

@@ -0,0 +1,26 @@
+//#region src/function/ary.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]
+*/
+function ary(func, n) {
+	return function(...args) {
+		return func.apply(this, args.slice(0, n));
+	};
+}
+//#endregion
+exports.ary = ary;