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/flattenDeep.js

@@ -0,0 +1,36 @@
+const require_flattenDeep = require("../../array/flattenDeep.js");
+const require_lazy = require("../_internal/lazy.js");
+//#region src/fp/array/flattenDeep.ts
+/**
+* Creates a function that recursively flattens an array.
+*
+* The returned function is lazy-capable inside {@link pipe}. A trailing
+* short-circuiting operator can stop before later nested values are visited.
+*
+* @template T - The type of elements in the array.
+* @returns A function that maps the piped array to a deeply flattened array.
+*
+* @example
+* import { flattenDeep, pipe } from 'es-toolkit/fp';
+*
+* pipe([1, [2, [3]]], flattenDeep());
+* // => [1, 2, 3]
+*/
+function flattenDeep() {
+	function flattenDeepEager(array) {
+		return require_flattenDeep.flattenDeep(array);
+	}
+	const flattenDeepLazy = require_lazy.createLazyFunction((value, _index, emit) => {
+		emitDeep(value, emit);
+	});
+	return require_lazy.combineEagerAndLazyFunctions(flattenDeepEager, flattenDeepLazy);
+}
+function emitDeep(value, emit) {
+	if (Array.isArray(value)) {
+		for (let index = 0; index < value.length; index++) emitDeep(value[index], emit);
+		return;
+	}
+	emit(value);
+}
+//#endregion
+exports.flattenDeep = flattenDeep;