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/groupBy.mjs

@@ -0,0 +1,26 @@
+import { groupBy as groupBy$1 } from "../../array/groupBy.mjs";
+//#region src/fp/array/groupBy.ts
+/**
+* Creates a function that groups values by a derived key.
+*
+* The key selector receives each value, index, and full input array. Values that produce
+* the same key are collected in insertion order.
+*
+* @template T - The type of elements in the array.
+* @template K - The property-key type produced by the selector.
+* @param getKey - Called with each value, index, and array to produce a group key.
+* @returns A function that maps a readonly array to grouped values.
+*
+* @example
+* import { groupBy, pipe } from 'es-toolkit/fp';
+*
+* pipe(['ant', 'bear', 'cat'], groupBy(word => word.length));
+* // => { 3: ['ant', 'cat'], 4: ['bear'] }
+*/
+function groupBy(getKey) {
+	return function(array) {
+		return groupBy$1(array, getKey);
+	};
+}
+//#endregion
+export { groupBy };