fix(ci): accept any HTTP response in manifest E2E health check

hello-tegg has no `/` route (only `/hello`), so the health check
returns 404. Change the check to accept any HTTP response (status
!= "000") as proof the app booted successfully.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: killagu

ecosystem-ci/scripts/verify-manifest.mjs

@@ -90,7 +90,9 @@ try {
       const output = runCapture(`curl -s -o /dev/null -w "%{http_code}" "${healthUrl}"`);
       const status = output.trim();
       console.log('  Health check: status=%s', status);
-      if (status === '200') {
+      // Any HTTP response (not connection refused) means the app is up.
+      // Not all apps have a route on `/`, so we accept any status code.
+      if (status !== '000') {
         ready = true;
         break;
       }