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/chunk.d.ts

@@ -0,0 +1,26 @@
+//#region src/compat/array/chunk.d.ts
+/**
+ * Splits an array into smaller arrays of a specified length.
+ *
+ * This function takes an input array and divides it into multiple smaller arrays,
+ * each of a specified length. If the input array cannot be evenly divided,
+ * the final sub-array will contain the remaining elements.
+ *
+ * @template T The type of elements in the array.
+ * @param arr - The array to be chunked into smaller arrays.
+ * @param size - The size of each smaller array. Must be a positive integer.
+ * @returns A two-dimensional array where each sub-array has a maximum length of `size`.
+ *
+ * @example
+ * // Splits an array of numbers into sub-arrays of length 2
+ * chunk([1, 2, 3, 4, 5], 2);
+ * // Returns: [[1, 2], [3, 4], [5]]
+ *
+ * @example
+ * // Splits an array of strings into sub-arrays of length 3
+ * chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 3);
+ * // Returns: [['a', 'b', 'c'], ['d', 'e', 'f'], ['g']]
+ */
+declare function chunk<T>(arr: ArrayLike<T> | null | undefined, size?: number): T[][];
+//#endregion
+export { chunk };