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/string/trimStart.js

@@ -0,0 +1,31 @@
+//#region src/string/trimStart.ts
+/**
+* Removes leading whitespace or specified characters from a string.
+*
+* If `chars` is a string, it should be a single character. To trim a string with multiple characters,
+* provide an array instead.
+*
+* @param str - The string from which leading characters will be trimmed.
+* @param chars - The character(s) to remove from the start of the string.
+* @returns The resulting string after the specified leading character has been removed.
+*
+* @example
+* const trimmedStr1 = trimStart('---hello', '-') // returns 'hello'
+* const trimmedStr2 = trimStart('000123', '0') // returns '123'
+* const trimmedStr3 = trimStart('abcabcabc', 'a') // returns 'bcabcabc'
+* const trimmedStr4 = trimStart('xxxtrimmed', 'x') // returns 'trimmed'
+*/
+function trimStart(str, chars) {
+	if (chars === void 0) return str.trimStart();
+	let startIndex = 0;
+	switch (typeof chars) {
+		case "string":
+			if (chars.length !== 1) throw new Error(`The 'chars' parameter should be a single character string.`);
+			while (startIndex < str.length && str[startIndex] === chars) startIndex++;
+			break;
+		case "object": while (startIndex < str.length && chars.includes(str[startIndex])) startIndex++;
+	}
+	return str.substring(startIndex);
+}
+//#endregion
+exports.trimStart = trimStart;