fix: preserve non-text content in consolidateContentForClaudeCode

When original response contains only non-text content (e.g., images),
return the original response unchanged instead of creating an empty
text block that overwrites the content.

Co-authored-by: Cameron Cooke <cameroncooke@users.noreply.github.com>

Author: claude[bot]

src/utils/validation.ts

@@ -238,6 +238,11 @@ export function consolidateContentForClaudeCode(response: ToolResponse): ToolRes
     // Note: Image content is not handled in this workaround as it requires special formatting
   });
 
+  // If no text content was found, return the original response to preserve non-text content
+  if (textParts.length === 0) {
+    return response;
+  }
+
   const consolidatedText = textParts.join('');
 
   return {