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/uniq.d.mts

@@ -0,0 +1,19 @@
+//#region src/array/uniq.d.ts
+/**
+ * Creates a duplicate-free version of an array.
+ *
+ * This function takes an array and returns a new array containing only the unique values
+ * from the original array, preserving the order of first occurrence.
+ *
+ * @template T - The type of elements in the array.
+ * @param arr - The array to process.
+ * @returns A new array with only unique values from the original array.
+ *
+ * @example
+ * const array = [1, 2, 2, 3, 4, 4, 5];
+ * const result = uniq(array);
+ * // result will be [1, 2, 3, 4, 5]
+ */
+declare function uniq<T>(arr: readonly T[]): T[];
+//#endregion
+export { uniq };