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/array/head.mjs

@@ -0,0 +1,25 @@
+import { head as head$1 } from "../../array/head.mjs";
+import { toArray } from "../_internal/toArray.mjs";
+import { isArrayLike } from "../predicate/isArrayLike.mjs";
+//#region src/compat/array/head.ts
+/**
+* Returns the first element of an array or `undefined` if the array is empty.
+*
+* This function takes an array and returns the first element of the array.
+* If the array is empty, the function returns `undefined`.
+*
+* @template T - The type of elements in the array.
+* @param arr - The array from which to get the first element.
+* @returns The first element of the array, or `undefined` if the array is empty.
+*
+* @example
+* const emptyArr: number[] = [];
+* const noElement = head(emptyArr);
+* // noElement will be undefined
+*/
+function head(arr) {
+	if (!isArrayLike(arr)) return;
+	return head$1(toArray(arr));
+}
+//#endregion
+export { head };