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/math/range.d.mts

@@ -0,0 +1,34 @@
+//#region src/compat/math/range.d.ts
+/**
+ * Creates an array of numbers progressing from `start` up to, but not including, `end`.
+ *
+ * @param start - The starting number of the range (inclusive)
+ * @param end - The end number of the range (exclusive)
+ * @param step - The value to increment or decrement by
+ * @returns An array of numbers from start to end
+ * @example
+ * range(4)
+ * // => [0, 1, 2, 3]
+ *
+ * range(1, 5)
+ * // => [1, 2, 3, 4]
+ *
+ * range(0, 20, 5)
+ * // => [0, 5, 10, 15]
+ */
+declare function range(start: number, end?: number, step?: number): number[];
+/**
+ * Creates an array of numbers progressing from 0 up to, but not including, `end`.
+ * Used internally when range is called as an iteratee.
+ *
+ * @param end - The end of the range (exclusive)
+ * @param index - The index argument passed to the iteratee
+ * @param guard - The guard object passed to the iteratee
+ * @returns An array of numbers from 0 to end
+ * @example
+ * [1, 2, 3].map(range)
+ * // => [[0], [0, 1], [0, 1, 2]]
+ */
+declare function range(end: number, index: string | number, guard: object): number[];
+//#endregion
+export { range };