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/fp/array/unzip.d.mts

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+//#region src/fp/array/unzip.d.ts
+type Unzip<K extends unknown[]> = { [I in keyof K]: Array<K[I]> };
+/**
+ * Creates a function that unzips grouped tuples into arrays by position.
+ *
+ * The returned function is the data-last form of the main {@link unzip} utility.
+ * Use it with {@link pipe}.
+ *
+ * @template T - The tuple type inside the zipped array.
+ * @returns A function that maps zipped tuples to arrays grouped by tuple position.
+ *
+ * @example
+ * import { pipe, unzip } from 'es-toolkit/fp';
+ *
+ * pipe([[1, 'a'], [2, 'b']] as Array<[number, string]>, unzip());
+ * // => [[1, 2], ['a', 'b']]
+ */
+declare function unzip<T extends unknown[]>(): (zipped: ReadonlyArray<[...T]>) => Unzip<T>;
+//#endregion
+export { unzip };