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/unionBy.mjs

@@ -0,0 +1,27 @@
+import { unionBy as unionBy$1 } from "../../array/unionBy.mjs";
+//#region src/fp/array/unionBy.ts
+/**
+* Creates a function that returns unique values by mapped identity.
+*
+* Values from the piped array are considered before values from secondArray. The mapper
+* is used to compare identities, matching the main {@link unionBy} behavior.
+*
+* @template T - The type of elements in the arrays.
+* @template U - The type of comparison keys returned by the mapper.
+* @param secondArray - Values to include after the piped array.
+* @param mapper - Called for values from both arrays to produce comparison keys.
+* @returns A function that maps a readonly array to its union with secondArray.
+*
+* @example
+* import { pipe, unionBy } from 'es-toolkit/fp';
+*
+* pipe([{ id: 1 }], unionBy([{ id: 1 }, { id: 2 }], item => item.id));
+* // => [{ id: 1 }, { id: 2 }]
+*/
+function unionBy(secondArray, mapper) {
+	return function(array) {
+		return unionBy$1(array, secondArray, mapper);
+	};
+}
+//#endregion
+export { unionBy };