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/object/clone.d.mts

@@ -0,0 +1,32 @@
+//#region src/compat/object/clone.d.ts
+/**
+ * Creates a shallow clone of the given object.
+ *
+ * @template T - The type of the object.
+ * @param obj - The object to clone.
+ * @returns A shallow clone of the given object.
+ *
+ * @example
+ * // Clone a primitive object
+ * const num = 29;
+ * const clonedNum = clone(num);
+ * console.log(clonedNum); // 29
+ * console.log(clonedNum === num); // true
+ *
+ * @example
+ * // Clone an array
+ * const arr = [1, 2, 3];
+ * const clonedArr = clone(arr);
+ * console.log(clonedArr); // [1, 2, 3]
+ * console.log(clonedArr === arr); // false
+ *
+ * @example
+ * // Clone an object
+ * const obj = { a: 1, b: 'es-toolkit', c: [1, 2, 3] };
+ * const clonedObj = clone(obj);
+ * console.log(clonedObj); // { a: 1, b: 'es-toolkit', c: [1, 2, 3] }
+ * console.log(clonedObj === obj); // false
+ */
+declare function clone<T>(obj: T): T;
+//#endregion
+export { clone };