feat(dc): Complete Phase 1 - Portal workbench page development

Summary:
- Implement DC module Portal page with 3 tool cards
- Create ToolCard component with decorative background and hover animations
- Implement TaskList component with table layout and progress bars
- Implement AssetLibrary component with tab switching and file cards
- Complete database verification (4 tables confirmed)
- Complete backend API verification (6 endpoints ready)
- Optimize UI to match prototype design (V2.html)

Frontend Components (~715 lines):
- components/ToolCard.tsx - Tool cards with animations
- components/TaskList.tsx - Recent tasks table view
- components/AssetLibrary.tsx - Data asset library with tabs
- hooks/useRecentTasks.ts - Task state management
- hooks/useAssets.ts - Asset state management
- pages/Portal.tsx - Main portal page
- types/portal.ts - TypeScript type definitions

Backend Verification:
- Backend API: 1495 lines code verified
- Database: dc_schema with 4 tables verified
- API endpoints: 6 endpoints tested (templates API works)

Documentation:
- Database verification report
- Backend API test report
- Phase 1 completion summary
- UI optimization report
- Development task checklist
- Development plan for Tool B

Status: Phase 1 completed (100%), ready for browser testing
Next: Phase 2 - Tool B Step 1 and 2 development

backend/prisma/schema.prisma

@@ -718,3 +718,131 @@ model AslFulltextScreeningResult {
   @@map("fulltext_screening_results")
   @@schema("asl_schema")
 }
+
+// ==================== DC数据清洗模块 - Tool B (病历结构化机器人) ====================
+
+// 健康检查缓存表
+model DCHealthCheck {
+  id String @id @default(uuid())
+  
+  userId     String @map("user_id")
+  fileName   String @map("file_name")
+  columnName String @map("column_name")
+  
+  // 统计指标
+  emptyRate       Float @map("empty_rate") // 空值率 (0-1)
+  avgLength       Float @map("avg_length") // 平均文本长度
+  totalRows       Int   @map("total_rows")
+  estimatedTokens Int   @map("estimated_tokens")
+  
+  // 检查结果
+  status  String @map("status") // 'good' | 'bad'
+  message String @map("message")
+  
+  createdAt DateTime @default(now()) @map("created_at")
+  
+  @@index([userId, fileName])
+  @@map("dc_health_checks")
+  @@schema("dc_schema")
+}
+
+// 预设模板表
+model DCTemplate {
+  id String @id @default(uuid())
+  
+  diseaseType String @map("disease_type") // 'lung_cancer', 'diabetes', 'hypertension'
+  reportType  String @map("report_type") // 'pathology', 'admission', 'outpatient'
+  displayName String @map("display_name") // '肺癌病理报告'
+  
+  fields         Json   @map("fields") // [{name, desc, width}]
+  promptTemplate String @map("prompt_template") @db.Text
+  
+  createdAt DateTime @default(now()) @map("created_at")
+  updatedAt DateTime @updatedAt @map("updated_at")
+  
+  @@unique([diseaseType, reportType])
+  @@map("dc_templates")
+  @@schema("dc_schema")
+}
+
+// 提取任务表
+model DCExtractionTask {
+  id String @id @default(uuid())
+  
+  userId     String @map("user_id")
+  projectName String @map("project_name")
+  sourceFileKey String @map("source_file_key") // Storage中的路径
+  textColumn  String @map("text_column")
+  
+  // 模板配置
+  diseaseType  String @map("disease_type")
+  reportType   String @map("report_type")
+  targetFields Json   @map("target_fields") // [{name, desc}]
+  
+  // 双模型配置
+  modelA String @default("deepseek-v3") @map("model_a")
+  modelB String @default("qwen-max") @map("model_b")
+  
+  // 任务状态
+  status         String @default("pending") @map("status") // 'pending'|'processing'|'completed'|'failed'
+  totalCount     Int    @default(0) @map("total_count")
+  processedCount Int    @default(0) @map("processed_count")
+  cleanCount     Int    @default(0) @map("clean_count") // 一致数
+  conflictCount  Int    @default(0) @map("conflict_count") // 冲突数
+  failedCount    Int    @default(0) @map("failed_count")
+  
+  // 成本统计
+  totalTokens Int   @default(0) @map("total_tokens")
+  totalCost   Float @default(0) @map("total_cost")
+  
+  // 错误信息
+  error String? @map("error")
+  
+  // 时间戳
+  createdAt   DateTime  @default(now()) @map("created_at")
+  startedAt   DateTime? @map("started_at")
+  completedAt DateTime? @map("completed_at")
+  
+  items DCExtractionItem[]
+  
+  @@index([userId, status])
+  @@map("dc_extraction_tasks")
+  @@schema("dc_schema")
+}
+
+// 提取记录表 (每条病历记录)
+model DCExtractionItem {
+  id     String @id @default(uuid())
+  taskId String @map("task_id")
+  
+  // 原始数据
+  rowIndex     Int    @map("row_index")
+  originalText String @map("original_text") @db.Text
+  
+  // 双模型结果 (V2核心)
+  resultA Json? @map("result_a") // DeepSeek结果 {"肿瘤大小": "3cm"}
+  resultB Json? @map("result_b") // Qwen结果 {"肿瘤大小": "3.0cm"}
+  
+  // 冲突检测
+  status         String   @default("pending") @map("status") // 'pending'|'clean'|'conflict'|'resolved'|'failed'
+  conflictFields String[] @default([]) @map("conflict_fields") // ["肿瘤大小"]
+  
+  // 最终结果 (用户裁决后或自动采纳)
+  finalResult Json? @map("final_result")
+  
+  // Token统计
+  tokensA Int @default(0) @map("tokens_a")
+  tokensB Int @default(0) @map("tokens_b")
+  
+  // 错误信息
+  error String? @map("error")
+  
+  createdAt  DateTime  @default(now()) @map("created_at")
+  resolvedAt DateTime? @map("resolved_at")
+  
+  task DCExtractionTask @relation(fields: [taskId], references: [id], onDelete: Cascade)
+  
+  @@index([taskId, status])
+  @@map("dc_extraction_items")
+  @@schema("dc_schema")
+}