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/functionsIn.js

@@ -0,0 +1,27 @@
+const require_isFunction = require("../../predicate/isFunction.js");
+//#region src/compat/object/functionsIn.ts
+/**
+* Returns an array of property names whose values are functions, including inherited properties.
+*
+* @param object The object to inspect.
+* @returns Returns the function names.
+* @example
+*
+* function Foo() {
+*   this.a = function() { return 'a'; };
+*   this.b = function() { return 'b'; };
+* }
+*
+* Foo.prototype.c = function() { return 'c'; };
+*
+* functionsIn(new Foo);
+* // => ['a', 'b', 'c']
+*/
+function functionsIn(object) {
+	if (object == null) return [];
+	const result = [];
+	for (const key in object) if (require_isFunction.isFunction(object[key])) result.push(key);
+	return result;
+}
+//#endregion
+exports.functionsIn = functionsIn;