fix: trim whitespace from query parameters to prevent cryptic errors (#208)

Leading/trailing spaces in the workers.dev URL (common when copy-pasting
from Cloudflare) caused UniFi to show unhelpful error messages. Trimming
input parameters handles this gracefully.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: willswire

src/index.ts

@@ -35,9 +35,9 @@ function constructClientOptions(request: Request): ClientOptions {
 function constructDNSRecords(request: Request): AddressableRecord[] {
 	const url = new URL(request.url);
 	const params = url.searchParams;
-	let ip = params.get('ip') || params.get('myip');
-	const ip6 = params.get('ip6');
-	const hostname = params.get('hostname');
+	let ip = (params.get('ip') || params.get('myip'))?.trim() || null;
+	const ip6 = params.get('ip6')?.trim() || null;
+	const hostname = params.get('hostname')?.trim() || null;
 
 	if (ip === null || ip === undefined) {
 		throw new HttpError(422, 'The "ip" parameter is required and cannot be empty. Specify ip=auto to use the client IP.');