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/fromPairs.mjs

@@ -0,0 +1,27 @@
+import { isArrayLike } from "../predicate/isArrayLike.mjs";
+//#region src/compat/object/fromPairs.ts
+/**
+* Converts an array of key-value pairs into an object.
+*
+* @template T - The type of the keys in the resulting object. It must extend `PropertyKey`.
+* @template U - The type of the values in the resulting object.
+*
+* @param pairs - An array of key-value pairs where each key is a `PropertyKey` and each value is of type `U`.
+* @returns An object where the keys are of type `T` and the values are of type `U`.
+*
+* @example
+* const pairs = [['a', 1], ['b', 2]];
+* const result = fromPairs(pairs);
+* // result will be: { a: 1, b: 2 }
+*/
+function fromPairs(pairs) {
+	if (!isArrayLike(pairs)) return {};
+	const result = {};
+	for (let i = 0; i < pairs.length; i++) {
+		const [key, value] = pairs[i];
+		result[key] = value;
+	}
+	return result;
+}
+//#endregion
+export { fromPairs };