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/prisma/schema.prisma

@@ -303,9 +303,25 @@ model ReviewTask {
   extractedText     String    @map("extracted_text")
   wordCount         Int?      @map("word_count")
   status            String    @default("pending")
+  
+  // 🆕 智能体选择（Phase 2新增）
+  selectedAgents    String[]  @default(["editorial", "methodology"]) @map("selected_agents")
+  
+  // 评估结果
   editorialReview   Json?     @map("editorial_review")
   methodologyReview Json?     @map("methodology_review")
   overallScore      Float?    @map("overall_score")
+  
+  // 🆕 结果摘要（Phase 2新增，用于列表展示）
+  editorialScore      Float?    @map("editorial_score")
+  methodologyStatus   String?   @map("methodology_status")  // pass/warn/fail
+  
+  // 🆕 预留字段（暂不使用）
+  picoExtract         Json?     @map("pico_extract")
+  isArchived          Boolean   @default(false) @map("is_archived")
+  archivedAt          DateTime? @map("archived_at")
+  
+  // 元数据
   modelUsed         String?   @map("model_used")
   startedAt         DateTime? @map("started_at")
   completedAt       DateTime? @map("completed_at")
@@ -318,6 +334,7 @@ model ReviewTask {
   @@index([userId])
   @@index([status])
   @@index([createdAt])
+  @@index([isArchived])
   @@map("review_tasks")
   @@schema("public")
 }