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/rest.d.ts

@@ -0,0 +1,34 @@
+//#region src/function/rest.d.ts
+/**
+ * Creates a function that transforms the arguments of the provided function `func`.
+ * The transformed arguments are passed to `func` such that the arguments starting from a specified index
+ * are grouped into an array, while the previous arguments are passed as individual elements.
+ *
+ * @template F - The type of the function being transformed.
+ * @param func - The function whose arguments are to be transformed.
+ * @param [startIndex=func.length - 1] - The index from which to start grouping the remaining arguments into an array.
+ *                                            Defaults to `func.length - 1`, grouping all arguments after the last parameter.
+ * @returns A new function that, when called, returns the result of calling `func` with the transformed arguments.
+ *
+ * The transformed arguments are:
+ * - The first `start` arguments as individual elements.
+ * - The remaining arguments from index `start` onward grouped into an array.
+ * @example
+ * function fn(a, b, c) {
+ *   return [a, b, c];
+ * }
+ *
+ * // Using default start index (func.length - 1, which is 2 in this case)
+ * const transformedFn = rest(fn);
+ * console.log(transformedFn(1, 2, 3, 4)); // [1, 2, [3, 4]]
+ *
+ * // Using start index 1
+ * const transformedFnWithStart = rest(fn, 1);
+ * console.log(transformedFnWithStart(1, 2, 3, 4)); // [1, [2, 3, 4]]
+ *
+ * // With fewer arguments than the start index
+ * console.log(transformedFn(1)); // [1, undefined, []]
+ */
+declare function rest<F extends (...args: any[]) => any>(func: F, startIndex?: number): (...args: any[]) => ReturnType<F>;
+//#endregion
+export { rest };