fix: make active reasoning state visible

components/reasoning-workspace.jsx

@@ -214,13 +214,13 @@ function LoadingOverlay({ isLoading, elapsed, currentMessage, variant }) {
   }
 
   return (
-    <div className="rounded-lg border border-gray-200 bg-blue-50 px-5 py-6">
+    <div className="rounded-lg border border-gray-200 bg-blue-50 px-5 py-6" role="status" aria-busy="true">
       <div className="flex items-center gap-3">
         <ActivitySpinner />
         <span className="text-base font-medium text-blue-900">Working through your situation</span>
       </div>
       <p className="mt-2 text-sm text-blue-700">{statusText}</p>
-      <p className="mt-1 text-xs text-blue-500">
+      <p className="mt-1 text-xs text-blue-500" aria-live="polite">
         This has been running for {elapsed}s.
         {variant === "initial" && elapsed >= 45 && (
           <span className="block mt-1">This can take around a minute with the current local model.</span>