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/rearg.d.ts

@@ -0,0 +1,20 @@
+import { Many } from "../_internal/Many.js";
+
+//#region src/compat/function/rearg.d.ts
+/**
+ * Creates a function that invokes `func` with arguments arranged according to the specified `indices`
+ * where the argument value at the first index is provided as the first argument,
+ * the argument value at the second index is provided as the second argument, and so on.
+ *
+ * @param func The function to rearrange arguments for.
+ * @param indices The arranged argument indices.
+ * @returns Returns the new function.
+ *
+ * @example
+ * const greet = (greeting: string, name: string) => `${greeting}, ${name}!`;
+ * const rearrangedGreet = rearg(greet, 1, 0);
+ * console.log(rearrangedGreet('World', 'Hello')); // Output: "Hello, World!"
+ */
+declare function rearg(func: (...args: any[]) => any, ...indices: Array<Many<number>>): (...args: any[]) => any;
+//#endregion
+export { rearg };