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/dropRight.d.ts

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+//#region src/array/dropRight.d.ts
+/**
+ * Removes a specified number of elements from the end of an array and returns the rest.
+ *
+ * This function takes an array and a number, and returns a new array with the specified number
+ * of elements removed from the end.
+ *
+ * @template T - The type of elements in the array.
+ * @param arr - The array from which to drop elements.
+ * @param itemsCount - The number of elements to drop from the end of the array.
+ * @returns A new array with the specified number of elements removed from the end.
+ *
+ * @example
+ * const array = [1, 2, 3, 4, 5];
+ * const result = dropRight(array, 2);
+ * // result will be [1, 2, 3] since the last two elements are dropped.
+ */
+declare function dropRight<T>(arr: readonly T[], itemsCount: number): T[];
+//#endregion
+export { dropRight };