chore(telemetry): verify signature comment and cleanup

vibn-frontend/app/api/chat/route.ts

@@ -1036,6 +1036,7 @@ export async function POST(request: Request) {
 
           if (ranVerification) {
             if (verifySig) {
+              // Blocked condition: Same exact error signature two rounds in a row, with no code progress made.
               if (lastVerifySig && verifySig === lastVerifySig && !progressed) {
                 loopBreakReason = `Blocked on persistent error: ${verifySig.split(";;")[0]}`;
               }
@@ -1423,7 +1424,7 @@ function getRoundVerifySignature(roundResults: any[]): string | null {
           Array.isArray(result.errors) &&
           result.errors.length > 0
         ) {
-          // Normalize: replace preview subdomain hashes and port numbers to keep signature stable
+          // Normalize: Keep status codes and line numbers intact! Only strip out volatile subdomains and timestamps.
           const cleanErrors = result.errors.map((e: string) =>
             normalizeError(e),
           );