Add dispute system

frontend/src/App.tsx

@@ -15,6 +15,7 @@ import { LobbyPage } from '@/pages/LobbyPage'
 import { PlayPage } from '@/pages/PlayPage'
 import { LeaderboardPage } from '@/pages/LeaderboardPage'
 import { InvitePage } from '@/pages/InvitePage'
+import { AssignmentDetailPage } from '@/pages/AssignmentDetailPage'
 
 // Protected route wrapper
 function ProtectedRoute({ children }: { children: React.ReactNode }) {
@@ -118,6 +119,15 @@ function App() {
             </ProtectedRoute>
           }
         />
+
+        <Route
+          path="assignments/:id"
+          element={
+            <ProtectedRoute>
+              <AssignmentDetailPage />
+            </ProtectedRoute>
+          }
+        />
       </Route>
     </Routes>
   )