Fix message offset

src/server.ts

@@ -61,7 +61,7 @@ async function forwardOutput() {
     switch (messageType) {
       case 1:
       case 2:
-        const text = encodeURIComponent(buff.subarray(37).toString());
+        const text = encodeURIComponent(buff.subarray(33).toString());
         raw.write('event: message\n');
         if (messageType === 1) {
           raw.write('id: stdout\n');