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/uniqBy.d.mts

@@ -0,0 +1,21 @@
+//#region src/fp/array/uniqBy.d.ts
+/**
+ * Creates a function that removes duplicate values by mapped identity.
+ *
+ * The first value for each mapped key is preserved. The returned function is
+ * lazy-capable inside {@link pipe}.
+ *
+ * @template T - The type of elements in the array.
+ * @template U - The type of comparison keys returned by the mapper.
+ * @param mapper - Called with each value and index to produce a comparison key.
+ * @returns A function that maps the piped array to unique values.
+ *
+ * @example
+ * import { pipe, uniqBy } from 'es-toolkit/fp';
+ *
+ * pipe([{ id: 1 }, { id: 1 }, { id: 2 }], uniqBy(item => item.id));
+ * // => [{ id: 1 }, { id: 2 }]
+ */
+declare function uniqBy<T, U>(mapper: (item: T, index: number) => U): (array: readonly T[]) => T[];
+//#endregion
+export { uniqBy };