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/intersectionWith.d.ts

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+//#region src/array/intersectionWith.d.ts
+/**
+ * Returns the intersection of two arrays based on a custom equality function.
+ *
+ * This function takes two arrays and a custom equality function. It returns a new array containing
+ * the elements from the first array that have matching elements in the second array, as determined
+ * by the custom equality function. It effectively filters out any elements from the first array that
+ * do not have corresponding matches in the second array according to the equality function.
+ *
+ * @template T - The type of elements in the first array.
+ * @template U - The type of elements in the second array.
+ * @param firstArr - The first array to compare.
+ * @param secondArr - The second array to compare.
+ * @param areItemsEqual - A custom function to determine if two elements are equal.
+ * This function takes two arguments, one from each array, and returns `true` if the elements are considered equal, and `false` otherwise.
+ * @returns A new array containing the elements from the first array that have corresponding matches in the second array according to the custom equality function.
+ *
+ * @example
+ * const array1 = [{ id: 1 }, { id: 2 }, { id: 3 }];
+ * const array2 = [{ id: 2 }, { id: 4 }];
+ * const areItemsEqual = (a, b) => a.id === b.id;
+ * const result = intersectionWith(array1, array2, areItemsEqual);
+ * // result will be [{ id: 2 }] since this element has a matching id in both arrays.
+ *
+ * @example
+ * const array1 = [
+ *   { id: 1, name: 'jane' },
+ *   { id: 2, name: 'amy' },
+ *   { id: 3, name: 'michael' },
+ * ];
+ * const array2 = [2, 4];
+ * const areItemsEqual = (a, b) => a.id === b;
+ * const result = intersectionWith(array1, array2, areItemsEqual);
+ * // result will be [{ id: 2, name: 'amy' }] since this element has a matching id that is equal to seconds array's element.
+ */
+declare function intersectionWith<T, U>(firstArr: readonly T[], secondArr: readonly U[], areItemsEqual: (x: T, y: U) => boolean): T[];
+//#endregion
+export { intersectionWith };