feat(frontend): add batch processing and review features

- Add batch processing API and mode
- Add deep read mode for full-text analysis
- Add document selector and switcher components
- Add review page with editorial and methodology assessment
- Add capacity indicator and usage info modal
- Add custom hooks for batch tasks and chat modes
- Update layouts and routing
- Add TypeScript types for chat features

frontend/src/App.tsx

@@ -5,6 +5,7 @@ import AgentChatPage from './pages/AgentChatPage'
 import ChatPage from './pages/ChatPage'
 import KnowledgePage from './pages/KnowledgePage'
 import HistoryPage from './pages/HistoryPage'
+import ReviewPage from './pages/ReviewPage'
 
 function App() {
   return (
@@ -12,6 +13,7 @@ function App() {
       <Route path="/" element={<MainLayout />}>
         <Route index element={<HomePage />} />
         <Route path="chat" element={<ChatPage />} />
+        <Route path="review" element={<ReviewPage />} />
         <Route path="agent/:agentId" element={<AgentChatPage />} />
         <Route path="knowledge" element={<KnowledgePage />} />
         <Route path="history" element={<HistoryPage />} />