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/array/unionWith.js

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+const require_uniqWith = require("./uniqWith.js");
+//#region src/array/unionWith.ts
+/**
+* Creates an array of unique values from two given arrays based on a custom equality function.
+*
+* This function takes two arrays and a custom equality function, merges the arrays, and returns
+* a new array containing only the unique values as determined by the custom equality function.
+*
+* @template T - The type of elements in the array.
+* @param arr1 - The first array to merge and filter for unique values.
+* @param arr2 - The second array to merge and filter for unique values.
+* @param areItemsEqual - A custom function to determine if two elements are equal.
+* It takes two arguments and returns `true` if the elements are considered equal, and `false` otherwise.
+* @returns A new array of unique values based on the custom equality function.
+*
+* @example
+* const array1 = [{ id: 1 }, { id: 2 }];
+* const array2 = [{ id: 2 }, { id: 3 }];
+* const areItemsEqual = (a, b) => a.id === b.id;
+* const result = unionWith(array1, array2, areItemsEqual);
+* // result will be [{ id: 1 }, { id: 2 }, { id: 3 }] since { id: 2 } is considered equal in both arrays
+*/
+function unionWith(arr1, arr2, areItemsEqual) {
+	return require_uniqWith.uniqWith(arr1.concat(arr2), areItemsEqual);
+}
+//#endregion
+exports.unionWith = unionWith;