Update ChatGPT widget components

frontend/src/components/SearchWidget.tsx

@@ -1,6 +1,4 @@
-import React from 'react';
 import { ScrollArea } from '@/components/ui/scroll-area';
-import { Button } from '@/components/ui/button';
 import { Search } from 'lucide-react';
 import type { SearchResult } from '@/types/search';
 

frontend/src/widget.tsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useState, Component, ErrorInfo } from 'react';
+import React, { useEffect, useState, Component, type ErrorInfo } from 'react';
 import ReactDOM from 'react-dom/client';
 import './index.css';
 import { NoteViewer } from '@/components/NoteViewer';