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/string/upperFirst.mjs

@@ -0,0 +1,19 @@
+import { upperFirst as upperFirst$1 } from "../../string/upperFirst.mjs";
+import { toString } from "../util/toString.mjs";
+//#region src/compat/string/upperFirst.ts
+/**
+* Converts the first character of string to upper case.
+*
+* @param str - The string that is to be changed
+* @returns The converted string.
+*
+* @example
+* const convertedStr1 = upperFirst('fred') // returns 'Fred'
+* const convertedStr2 = upperFirst('Fred') // returns 'Fred'
+* const convertedStr3 = upperFirst('FRED') // returns 'FRED'
+*/
+function upperFirst(str) {
+	return upperFirst$1(toString(str));
+}
+//#endregion
+export { upperFirst };