feat(rvw): Complete RVW module development Phase 1-3

Summary:
- Migrate backend to modules/rvw with v2 API routes (/api/v2/rvw)
- Add new database fields: selectedAgents, editorialScore, methodologyStatus, picoExtract, isArchived
- Create frontend module in frontend-v2/src/modules/rvw
- Implement Dashboard with task list, filtering, batch operations
- Implement ReportDetail with dual tabs (editorial/methodology)
- Implement AgentModal for intelligent agent selection
- Register RVW module in moduleRegistry.ts
- Add navigation entry in TopNavigation
- Update documentation for RVW module status (v3.0)
- Update system status document (v2.9)

Features:
- User can select agents: editorial, methodology, or both
- Support batch task execution
- Task status filtering
- Replace console.log with logger service
- Maintain v1 API backward compatibility

Tested: Frontend and backend verified locally
Status: 85% complete (Phase 1-3 done)

frontend/src/App.tsx

@@ -6,10 +6,15 @@ import ChatPage from './pages/ChatPage'
 import KnowledgePage from './pages/KnowledgePage'
 import HistoryPage from './pages/HistoryPage'
 import ReviewPage from './pages/ReviewPage'
+import { RvwDashboard } from './pages/rvw'
 
 function App() {
   return (
     <Routes>
+      {/* RVW模块 - 独立布局 */}
+      <Route path="/rvw" element={<RvwDashboard />} />
+      
+      {/* 主系统 */}
       <Route path="/" element={<MainLayout />}>
         <Route index element={<HomePage />} />
         <Route path="chat" element={<ChatPage />} />