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/unionWith.mjs

@@ -0,0 +1,26 @@
+import { unionWith as unionWith$1 } from "../../array/unionWith.mjs";
+//#region src/fp/array/unionWith.ts
+/**
+* Creates a function that returns unique values using a custom equality function.
+*
+* Values from the piped array are considered before values from secondArray. The equality
+* function decides whether two values represent the same item.
+*
+* @template T - The type of elements in the arrays.
+* @param secondArray - Values to include after the piped array.
+* @param areItemsEqual - Returns true when two values are equal.
+* @returns A function that maps a readonly array to its union with secondArray.
+*
+* @example
+* import { pipe, unionWith } from 'es-toolkit/fp';
+*
+* pipe([{ id: 1 }], unionWith([{ id: 1 }, { id: 2 }], (a, b) => a.id === b.id));
+* // => [{ id: 1 }, { id: 2 }]
+*/
+function unionWith(secondArray, areItemsEqual) {
+	return function(array) {
+		return unionWith$1(array, secondArray, areItemsEqual);
+	};
+}
+//#endregion
+export { unionWith };