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/groupBy.js

@@ -0,0 +1,43 @@
+const require_groupBy = require("../../array/groupBy.js");
+const require_identity = require("../../function/identity.js");
+const require_isArrayLike = require("../predicate/isArrayLike.js");
+const require_iteratee = require("../util/iteratee.js");
+//#region src/compat/array/groupBy.ts
+/**
+* Groups the elements of an array or object based on a provided key-generating function.
+*
+* This function takes an array or object and a function that generates a key from each element or value.
+* It returns an object where the keys are the generated keys and the values are arrays of elements that
+* share the same key.
+*
+* @template T - The type of elements in the array or values in the object.
+* @template K - The type of keys.
+* @param source - The collection to group.
+* @param [_getKeyFromItem] - The iteratee to transform keys.
+*   - If a function is provided, it's invoked for each element in the collection.
+*   - If a property name (string) is provided, that property of each element is used as the key.
+*   - If a property-value pair (array) is provided, elements with matching property values are used.
+*   - If a partial object is provided, elements with matching properties are used.
+* @returns An object where each key is associated with an array of elements that
+* share that key.
+*
+* @example
+* // Using an array
+* const array = [6.1, 4.2, 6.3];
+* const result = groupBy(array, Math.floor);
+* // => { 4: [4.2], 6: [6.1, 6.3] }
+*
+* @example
+* // Using a property name
+* const array = ['one', 'two', 'three'];
+* const result = groupBy(array, 'length');
+* // => { 3: ['one', 'two'], 5: ['three'] }
+*/
+function groupBy(source, _getKeyFromItem) {
+	if (source == null) return {};
+	const items = require_isArrayLike.isArrayLike(source) ? Array.from(source) : Object.values(source);
+	const getKeyFromItem = require_iteratee.iteratee(_getKeyFromItem ?? require_identity.identity);
+	return require_groupBy.groupBy(items, getKeyFromItem);
+}
+//#endregion
+exports.groupBy = groupBy;