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/array/unzipWith.d.mts

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+//#region src/array/unzipWith.d.ts
+/**
+ * Unzips an array of arrays, applying an `iteratee` function to regrouped elements.
+ *
+ * @template T, R
+ * @param target - The nested array to unzip. This is an array of arrays,
+ * where each inner array contains elements to be unzipped.
+ * @param iteratee - A function to transform the unzipped elements.
+ * @returns A new array of unzipped and transformed elements.
+ *
+ * @example
+ * const nestedArray = [[1, 2], [3, 4], [5, 6]];
+ * const result = unzipWith(nestedArray, (item, item2, item3) => item + item2 + item3);
+ * // result will be [9, 12]
+ */
+declare function unzipWith<T, R>(target: readonly T[][], iteratee: (...args: T[]) => R): R[];
+//#endregion
+export { unzipWith };