fix: remove empty screen reader announcement

Removes premature "Claude says" announcement that had no content.
Now screen readers only announce when Claude actually provides content.

Author: vick08

src/components/ClaudeCodeSession.tsx

@@ -463,8 +463,7 @@ export const ClaudeCodeSession: React.FC<ClaudeCodeSessionProps> = ({
       setError(null);
       hasActiveSessionRef.current = true;
 
-      // Announce that Claude is starting to process
-      announceClaudeStarted();
+      // Don't announce "Claude says" here - wait for actual content to arrive
 
       // For resuming sessions, ensure we have the session ID
       if (effectiveSession && !claudeSessionId) {