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/function/delay.d.ts

@@ -0,0 +1,30 @@
+//#region src/compat/function/delay.d.ts
+/**
+ * Invokes the specified function after a delay of the given number of milliseconds.
+ * Any additional arguments are passed to the function when it is invoked.
+ *
+ * @param func - The function to delay.
+ * @param wait - The number of milliseconds to delay the invocation.
+ * @param args - The arguments to pass to the function when it is invoked.
+ * @returns Returns the timer id.
+ * @throws {TypeError} If the first argument is not a function.
+ *
+ * @example
+ * // Example 1: Delayed function execution
+ * const timerId = delay(
+ *   (greeting, recipient) => {
+ *     console.log(`${greeting}, ${recipient}!`);
+ *   },
+ *   1000,
+ *   'Hello',
+ *   'Alice'
+ * );
+ * // => 'Hello, Alice!' will be logged after one second.
+ *
+ * // Example 2: Clearing the timeout before execution
+ * clearTimeout(timerId);
+ * // The function will not be executed because the timeout was cleared.
+ */
+declare function delay(func: (...args: any[]) => any, wait: number, ...args: any[]): number;
+//#endregion
+export { delay };