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/array/mapAsync.d.mts

@@ -0,0 +1,35 @@
+//#region src/array/mapAsync.d.ts
+interface MapAsyncOptions {
+  concurrency?: number;
+}
+/**
+ * Transforms each element in an array using an async callback function and returns
+ * a promise that resolves to an array of transformed values.
+ *
+ * @template T - The type of elements in the input array.
+ * @template R - The type of elements in the output array.
+ * @param array The array to transform.
+ * @param callback An async function that transforms each element.
+ * @param [options] Optional configuration object.
+ * @param [options.concurrency] Maximum number of concurrent async operations. If not specified, all operations run concurrently.
+ * @returns A promise that resolves to an array of transformed values.
+ * @example
+ * const users = [{ id: 1 }, { id: 2 }, { id: 3 }];
+ * const userDetails = await mapAsync(users, async (user) => {
+ *   return await fetchUserDetails(user.id);
+ * });
+ * // Returns: [{ id: 1, name: '...' }, { id: 2, name: '...' }, { id: 3, name: '...' }]
+ *
+ * @example
+ * // With concurrency limit
+ * const numbers = [1, 2, 3, 4, 5];
+ * const results = await mapAsync(
+ *   numbers,
+ *   async (n) => await slowOperation(n),
+ *   { concurrency: 2 }
+ * );
+ * // Processes at most 2 operations concurrently
+ */
+declare function mapAsync<T, R>(array: readonly T[], callback: (item: T, index: number, array: readonly T[]) => Promise<R>, options?: MapAsyncOptions): Promise<R[]>;
+//#endregion
+export { mapAsync };