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/predicate/isArguments.js

@@ -0,0 +1,27 @@
+const require_getTag = require("../_internal/getTag.js");
+//#region src/compat/predicate/isArguments.ts
+/**
+* Checks if the given value is an arguments object.
+*
+* This function tests whether the provided value is an arguments object or not.
+* It returns `true` if the value is an arguments object, and `false` otherwise.
+*
+* This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to an arguments object.
+*
+* @param value - The value to test if it is an arguments object.
+* @returns `true` if the value is an arguments, `false` otherwise.
+*
+* @example
+* const args = (function() { return arguments; })();
+* const strictArgs = (function() { 'use strict'; return arguments; })();
+* const value = [1, 2, 3];
+*
+* console.log(isArguments(args)); // true
+* console.log(isArguments(strictArgs)); // true
+* console.log(isArguments(value)); // false
+*/
+function isArguments(value) {
+	return value !== null && typeof value === "object" && require_getTag.getTag(value) === "[object Arguments]";
+}
+//#endregion
+exports.isArguments = isArguments;