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/function/after.mjs

@@ -0,0 +1,38 @@
+//#region src/function/after.ts
+/**
+* Creates a function that only executes starting from the `n`-th call.
+* The provided function will be invoked starting from the `n`-th call.
+*
+* This is particularly useful for scenarios involving events or asynchronous operations
+* where an action should occur only after a certain number of invocations.
+*
+* @template F - The type of the function to be invoked.
+* @param n - The number of calls required for `func` to execute.
+* @param func - The function to be invoked.
+* @returns A new function that:
+* - Tracks the number of calls.
+* - Invokes `func` starting from the `n`-th call.
+* - Returns `undefined` if fewer than `n` calls have been made.
+* @throws {Error} - Throws an error if `n` is negative.
+* @example
+*
+* const afterFn = after(3, () => {
+*  console.log("called")
+* });
+*
+* // Will not log anything.
+* afterFn()
+* // Will not log anything.
+* afterFn()
+* // Will log 'called'.
+* afterFn()
+*/
+function after(n, func) {
+	if (!Number.isInteger(n) || n < 0) throw new Error(`n must be a non-negative integer.`);
+	let counter = 0;
+	return (...args) => {
+		if (++counter >= n) return func(...args);
+	};
+}
+//#endregion
+export { after };