Improve error messages on failed onboarding (#17357)

packages/cli/src/ui/components/ValidationDialog.tsx

@@ -48,17 +48,17 @@ export function ValidationDialog({
     },
   ];
 
-  // Handle keypresses during 'waiting' state (ESC to cancel, Enter to confirm completion)
+  // Handle keypresses globally for cancellation, and specific logic for waiting state
   useKeypress(
     (key) => {
       if (keyMatchers[Command.ESCAPE](key) || keyMatchers[Command.QUIT](key)) {
         onChoice('cancel');
-      } else if (keyMatchers[Command.RETURN](key)) {
+      } else if (state === 'waiting' && keyMatchers[Command.RETURN](key)) {
         // User confirmed verification is complete - transition to 'complete' state
         setState('complete');
       }
     },
-    { isActive: state === 'waiting' },
+    { isActive: state !== 'complete' },
   );
 
   // When state becomes 'complete', show success message briefly then proceed