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/defer.mjs

@@ -0,0 +1,20 @@
+//#region src/compat/function/defer.ts
+/**
+* Defers invoking the `func` until the current call stack has cleared. Any additional arguments are provided to func when it's invoked.
+*
+* @param func The function to defer.
+* @param args The arguments to invoke `func` with.
+* @returns Returns the timer id.
+*
+* @example
+* defer((text) => {
+*   console.log(text);
+* }, 'deferred');
+* // => Logs 'deferred' after the current call stack has cleared.
+*/
+function defer(func, ...args) {
+	if (typeof func !== "function") throw new TypeError("Expected a function");
+	return setTimeout(func, 1, ...args);
+}
+//#endregion
+export { defer };