- 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
- System architecture and design documentation
- Business module docs (ASL/AIA/PKB/RVW/DC/SSA/ST)
- ASL module complete design (quality assurance, tech selection)
- Platform layer and common capabilities docs
- Development standards and API specifications
- Deployment and operations guides
- Project management and milestone tracking
- Architecture implementation reports
- Documentation templates and guides