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/compat/array/compact.js

@@ -0,0 +1,20 @@
+const require_compact = require("../../array/compact.js");
+const require_isArrayLike = require("../predicate/isArrayLike.js");
+//#region src/compat/array/compact.ts
+/**
+* Removes falsey values (false, null, 0, 0n, '', undefined, NaN) from an array.
+*
+* @template T - The type of elements in the array.
+* @param arr - The input array to remove falsey values.
+* @returns A new array with all falsey values removed.
+*
+* @example
+* compact([0, 0n, 1, false, 2, '', 3, null, undefined, 4, NaN, 5]);
+* Returns: [1, 2, 3, 4, 5]
+*/
+function compact(arr) {
+	if (!require_isArrayLike.isArrayLike(arr)) return [];
+	return require_compact.compact(Array.from(arr));
+}
+//#endregion
+exports.compact = compact;