feat: Enhance result analysis and error display

frontend/src/App.tsx

@@ -2,7 +2,6 @@ import React from 'react';
 import { ThemeProvider, CssBaseline } from '@mui/material';
 import { BrowserRouter as Router, Routes, Route } from 'react-router-dom';
 import theme from './theme';
-import StartPage from './pages/StartPage';
 import CreateSession from './pages/CreateSession';
 
 import SessionPage from './pages/SessionPage';
@@ -13,8 +12,7 @@ function App() {
       <CssBaseline />
       <Router>
         <Routes>
-          <Route path="/" element={<StartPage />} />
-          <Route path="/create" element={<CreateSession />} />
+          <Route path="/" element={<CreateSession />} />
           {/* Other routes will be added here */}
           <Route path="/session/:sessionId" element={<SessionPage />} />
         </Routes>