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/differenceWith.d.mts

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+//#region src/fp/array/differenceWith.d.ts
+/**
+ * Creates a function that returns values that are not equal to any configured value.
+ *
+ * Equality is decided by the provided comparator. The returned function is
+ * lazy-capable inside {@link pipe}.
+ *
+ * @template T - The type of elements in the piped array.
+ * @template U - The type of elements in the configured array.
+ * @param secondArray - Values to compare against the piped array.
+ * @param areItemsEqual - Returns true when a piped value equals a configured value.
+ * @returns A function that maps the piped array to its custom difference.
+ *
+ * @example
+ * import { differenceWith, pipe } from 'es-toolkit/fp';
+ *
+ * pipe([{ id: 1 }, { id: 2 }], differenceWith([2], (item, id) => item.id === id));
+ * // => [{ id: 1 }]
+ */
+declare function differenceWith<T, U>(secondArray: readonly U[], areItemsEqual: (item: T, other: U) => boolean): (array: readonly T[]) => T[];
+//#endregion
+export { differenceWith };