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/findLastIndex.d.ts

@@ -0,0 +1,34 @@
+import { ListIterateeCustom } from "../_internal/ListIterateeCustom.js";
+
+//#region src/compat/array/findLastIndex.d.ts
+/**
+ * Finds the index of the last element in the array that satisfies the predicate.
+ *
+ * @template T
+ * @param array - The array to search through.
+ * @param [predicate] - The predicate function, partial object, property-value pair, or property name.
+ * @param [fromIndex] - The index to start searching from.
+ * @returns The index of the last matching element, or -1 if not found.
+ *
+ * @example
+ * const users = [
+ *   { user: 'barney', active: true },
+ *   { user: 'fred', active: false },
+ *   { user: 'pebbles', active: false }
+ * ];
+ *
+ * findLastIndex(users, o => o.user === 'pebbles');
+ * // => 2
+ *
+ * findLastIndex(users, { user: 'barney', active: true });
+ * // => 0
+ *
+ * findLastIndex(users, ['active', false]);
+ * // => 2
+ *
+ * findLastIndex(users, 'active');
+ * // => 0
+ */
+declare function findLastIndex<T>(array: ArrayLike<T> | null | undefined, predicate?: ListIterateeCustom<T, boolean>, fromIndex?: number): number;
+//#endregion
+export { findLastIndex };