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/pages/rvw/components/index.ts

@@ -0,0 +1,14 @@
+/**
+ * RVW组件导出
+ */
+export { default as Sidebar } from './Sidebar';
+export { default as Header } from './Header';
+export { default as FilterChips } from './FilterChips';
+export { default as TaskTable } from './TaskTable';
+export { default as BatchToolbar } from './BatchToolbar';
+export { default as AgentModal } from './AgentModal';
+export { default as ScoreRing } from './ScoreRing';
+export { default as EditorialReport } from './EditorialReport';
+export { default as MethodologyReport } from './MethodologyReport';
+export { default as ReportDetail } from './ReportDetail';
+