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/set/forEach.js

@@ -0,0 +1,27 @@
+//#region src/set/forEach.ts
+/**
+* Executes a provided function once for each element in a Set.
+*
+* This function iterates through all elements of the Set and executes the callback function
+* for each element. The callback receives the value twice (for consistency with Map.forEach)
+* and the Set itself as arguments.
+*
+* @template T - The type of elements in the Set.
+* @param set - The Set to iterate over.
+* @param callback - A function to execute for each element.
+*
+* @example
+* const set = new Set([1, 2, 3]);
+* forEach(set, (value) => {
+*   console.log(value * 2);
+* });
+* // Output:
+* // 2
+* // 4
+* // 6
+*/
+function forEach(set, callback) {
+	for (const value of set) callback(value, value, set);
+}
+//#endregion
+exports.forEach = forEach;