feat(cli): overhaul thinking UI (#18725)

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

@@ -58,7 +58,11 @@ export const LoadingIndicator: React.FC<LoadingIndicatorProps> = ({
   const hasThoughtIndicator =
     currentLoadingPhrase !== INTERACTIVE_SHELL_WAITING_PHRASE &&
     Boolean(thought?.subject?.trim());
-  const thinkingIndicator = hasThoughtIndicator ? '💬 ' : '';
+  // Avoid "Thinking... Thinking..." duplication if primaryText already starts with "Thinking"
+  const thinkingIndicator =
+    hasThoughtIndicator && !primaryText?.startsWith('Thinking')
+      ? 'Thinking... '
+      : '';
 
   const cancelAndTimerContent =
     showCancelAndTimer &&