Fix: Variables sin uso

chatbot-admin/src/components/SystemPromptManager.tsx

@@ -12,7 +12,7 @@ import AddIcon from '@mui/icons-material/Add';
 import SendIcon from '@mui/icons-material/Send';
 import apiClient from '../api/apiClient';
 import ReactMarkdown from 'react-markdown';
-import rehypeSanitize, { defaultSchema } from 'rehype-sanitize';
+import rehypeSanitize from 'rehype-sanitize';
 
 interface SystemPrompt {
   id: number;
@@ -159,8 +159,6 @@ const SystemPromptManager: React.FC<SystemPromptManagerProps> = ({ onAuthError }
 
       setChatHistory(prev => [...prev, { role: 'bot', text: '' }]);
 
-      let isFirstChunk = true;
-
       while (true) {
         const { done, value } = await reader.read();