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/predicate/isArrayLike.d.mts

@@ -0,0 +1,28 @@
+//#region src/compat/predicate/isArrayLike.d.ts
+/**
+ * Checks if `value` is array-like. This overload is for compatibility with lodash type checking.
+ *
+ * @param t The value to check.
+ * @returns Returns `true` if `value` is array-like, else `false`.
+ */
+declare function isArrayLike<T extends {
+  __lodashAnyHack: any;
+}>(t: T): boolean;
+/**
+ * Checks if `value` is array-like. Functions, null, and undefined are never array-like.
+ *
+ * @param value The value to check.
+ * @returns Returns `false` for functions, null, and undefined.
+ */
+declare function isArrayLike(value: ((...args: any[]) => any) | null | undefined): value is never;
+/**
+ * Checks if `value` is array-like.
+ *
+ * @param value The value to check.
+ * @returns} Returns `true` if `value` is array-like, else `false`.
+ */
+declare function isArrayLike(value: any): value is {
+  length: number;
+};
+//#endregion
+export { isArrayLike };