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/compact.d.ts

@@ -0,0 +1,22 @@
+//#region src/fp/array/compact.d.ts
+type NotFalsey<T> = Exclude<T, false | null | 0 | 0n | '' | undefined>;
+/**
+ * Creates a function that removes falsey values from an array. Use it with {@link pipe}.
+ *
+ * Falsey values include false, null, 0, -0, 0n, an empty string, undefined,
+ * and NaN. The returned function is lazy-capable inside {@link pipe}, so a
+ * trailing short-circuiting operator such as {@link take} can stop once enough
+ * truthy values have been emitted.
+ *
+ * @template T - The type of elements in the array.
+ * @returns A function that maps a readonly array to a new array with falsey values removed.
+ *
+ * @example
+ * import { compact, pipe } from 'es-toolkit/fp';
+ *
+ * pipe([0, 1, false, 2, '', 3], compact());
+ * // => [1, 2, 3]
+ */
+declare function compact<T>(): (array: readonly T[]) => Array<NotFalsey<T>>;
+//#endregion
+export { compact };