feat(asl): Complete Day 5 - Fulltext Screening Backend API Development

- Implement 5 core API endpoints (create task, get progress, get results, update decision, export Excel)
- Add FulltextScreeningController with Zod validation (652 lines)
- Implement ExcelExporter service with 4-sheet report generation (352 lines)
- Register routes under /api/v1/asl/fulltext-screening
- Create 31 REST Client test cases
- Add automated integration test script
- Fix PDF extraction fallback mechanism in LLM12FieldsService
- Update API design documentation to v3.0
- Update development plan to v1.2
- Create Day 5 development record
- Clean up temporary test files

backend/src/modules/asl/routes/index.ts

@@ -6,6 +6,7 @@ import { FastifyInstance } from 'fastify';
 import * as projectController from '../controllers/projectController.js';
 import * as literatureController from '../controllers/literatureController.js';
 import * as screeningController from '../controllers/screeningController.js';
+import * as fulltextScreeningController from '../fulltext-screening/controllers/FulltextScreeningController.js';
 
 export async function aslRoutes(fastify: FastifyInstance) {
   // ==================== 筛选项目路由 ====================
@@ -58,6 +59,23 @@ export async function aslRoutes(fastify: FastifyInstance) {
   
   // TODO: 启动筛选任务（Week 2 Day 2 已实现为同步流程，异步版本待实现）
   // fastify.post('/projects/:projectId/screening/start', screeningController.startScreening);
+
+  // ==================== 全文复筛路由 (Day 5 新增) ====================
+  
+  // 创建全文复筛任务
+  fastify.post('/fulltext-screening/tasks', fulltextScreeningController.createTask);
+  
+  // 获取任务进度
+  fastify.get('/fulltext-screening/tasks/:taskId', fulltextScreeningController.getTaskProgress);
+  
+  // 获取任务结果（支持筛选和分页）
+  fastify.get('/fulltext-screening/tasks/:taskId/results', fulltextScreeningController.getTaskResults);
+  
+  // 人工审核决策
+  fastify.put('/fulltext-screening/results/:resultId/decision', fulltextScreeningController.updateDecision);
+  
+  // 导出Excel
+  fastify.get('/fulltext-screening/tasks/:taskId/export', fulltextScreeningController.exportExcel);
 }