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/chunkBy.d.mts

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+//#region src/fp/array/chunkBy.d.ts
+/**
+ * Creates a function that splits consecutive elements whenever the derived key changes.
+ *
+ * The iteratee is called from left to right. A new chunk starts when its key differs
+ * from the previous key by strict inequality. Use the returned function with {@link pipe}.
+ *
+ * @template T - The type of elements in the array.
+ * @param iteratee - Called for each value to produce the comparison key.
+ * @returns A function that maps a readonly array to consecutive same-key chunks.
+ *
+ * @example
+ * import { chunkBy, pipe } from 'es-toolkit/fp';
+ *
+ * pipe([1, 1, 2, 3, 3], chunkBy(value => value));
+ * // => [[1, 1], [2], [3, 3]]
+ */
+declare function chunkBy<T>(iteratee: (value: T) => unknown): (array: readonly T[]) => T[][];
+//#endregion
+export { chunkBy };