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)

backend/src/modules/rvw/index.ts

@@ -0,0 +1,25 @@
+/**
+ * RVW稿件审查模块 - 模块入口
+ * @module rvw
+ * 
+ * 功能：
+ * - 稿约规范性评估（11项标准）
+ * - 方法学评估（3部分，20个检查点）
+ * - 智能体选择（可选1个或2个）
+ * - 批量审查支持
+ */
+
+// 导出路由
+export { default as rvwRoutes } from './routes/index.js';
+
+// 导出服务（供其他模块使用）
+export * as reviewService from './services/reviewService.js';
+export * as editorialService from './services/editorialService.js';
+export * as methodologyService from './services/methodologyService.js';
+
+// 导出类型
+export * from './types/index.js';
+
+// 导出工具函数
+export * from './services/utils.js';
+