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/prisma/migrations/manual_fulltext_screening.sql

@@ -0,0 +1,141 @@
+-- =====================================================
+-- 全文复筛数据库迁移脚本（手动执行）
+-- Schema: asl_schema
+-- 日期: 2025-11-23
+-- 说明: 只操作asl_schema，不影响其他schema
+-- =====================================================
+
+-- 1. 修改 literatures 表，添加全文复筛相关字段
+ALTER TABLE asl_schema.literatures
+  ADD COLUMN IF NOT EXISTS stage TEXT DEFAULT 'imported',
+  ADD COLUMN IF NOT EXISTS has_pdf BOOLEAN DEFAULT false,
+  ADD COLUMN IF NOT EXISTS pdf_storage_type TEXT,
+  ADD COLUMN IF NOT EXISTS pdf_storage_ref TEXT,
+  ADD COLUMN IF NOT EXISTS pdf_status TEXT DEFAULT 'pending',
+  ADD COLUMN IF NOT EXISTS pdf_uploaded_at TIMESTAMP(3),
+  ADD COLUMN IF NOT EXISTS full_text_storage_type TEXT,
+  ADD COLUMN IF NOT EXISTS full_text_storage_ref TEXT,
+  ADD COLUMN IF NOT EXISTS full_text_url TEXT,
+  ADD COLUMN IF NOT EXISTS full_text_format TEXT,
+  ADD COLUMN IF NOT EXISTS full_text_source TEXT,
+  ADD COLUMN IF NOT EXISTS full_text_token_count INTEGER,
+  ADD COLUMN IF NOT EXISTS full_text_extracted_at TIMESTAMP(3);
+
+-- 添加索引
+CREATE INDEX IF NOT EXISTS idx_literatures_stage ON asl_schema.literatures(stage);
+CREATE INDEX IF NOT EXISTS idx_literatures_has_pdf ON asl_schema.literatures(has_pdf);
+CREATE INDEX IF NOT EXISTS idx_literatures_pdf_status ON asl_schema.literatures(pdf_status);
+
+-- 2. 创建 fulltext_screening_tasks 表
+CREATE TABLE IF NOT EXISTS asl_schema.fulltext_screening_tasks (
+  id TEXT PRIMARY KEY,
+  project_id TEXT NOT NULL,
+  model_a TEXT NOT NULL,
+  model_b TEXT NOT NULL,
+  prompt_version TEXT,
+  status TEXT NOT NULL DEFAULT 'pending',
+  total_count INTEGER NOT NULL DEFAULT 0,
+  processed_count INTEGER NOT NULL DEFAULT 0,
+  success_count INTEGER NOT NULL DEFAULT 0,
+  failed_count INTEGER NOT NULL DEFAULT 0,
+  degraded_count INTEGER NOT NULL DEFAULT 0,
+  total_tokens INTEGER DEFAULT 0,
+  total_cost DOUBLE PRECISION DEFAULT 0,
+  started_at TIMESTAMP(3),
+  completed_at TIMESTAMP(3),
+  estimated_end_at TIMESTAMP(3),
+  error_message TEXT,
+  error_stack TEXT,
+  created_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  CONSTRAINT fk_fulltext_task_project FOREIGN KEY (project_id) 
+    REFERENCES asl_schema.screening_projects(id) ON DELETE CASCADE
+);
+
+-- 添加索引
+CREATE INDEX IF NOT EXISTS idx_fulltext_tasks_project_id ON asl_schema.fulltext_screening_tasks(project_id);
+CREATE INDEX IF NOT EXISTS idx_fulltext_tasks_status ON asl_schema.fulltext_screening_tasks(status);
+CREATE INDEX IF NOT EXISTS idx_fulltext_tasks_created_at ON asl_schema.fulltext_screening_tasks(created_at);
+
+-- 3. 创建 fulltext_screening_results 表
+CREATE TABLE IF NOT EXISTS asl_schema.fulltext_screening_results (
+  id TEXT PRIMARY KEY,
+  task_id TEXT NOT NULL,
+  project_id TEXT NOT NULL,
+  literature_id TEXT NOT NULL,
+  
+  -- Model A (DeepSeek-V3) 结果
+  model_a_name TEXT,
+  model_a_status TEXT,
+  model_a_fields JSONB,
+  model_a_overall JSONB,
+  model_a_processing_log JSONB,
+  model_a_verification JSONB,
+  model_a_tokens INTEGER,
+  model_a_cost DOUBLE PRECISION,
+  model_a_error TEXT,
+  
+  -- Model B (Qwen-Max) 结果
+  model_b_name TEXT,
+  model_b_status TEXT,
+  model_b_fields JSONB,
+  model_b_overall JSONB,
+  model_b_processing_log JSONB,
+  model_b_verification JSONB,
+  model_b_tokens INTEGER,
+  model_b_cost DOUBLE PRECISION,
+  model_b_error TEXT,
+  
+  -- 验证结果
+  medical_logic_issues JSONB,
+  evidence_chain_issues JSONB,
+  
+  -- 冲突检测
+  is_conflict BOOLEAN DEFAULT false,
+  conflict_severity TEXT,
+  conflict_fields TEXT[],
+  conflict_details JSONB,
+  review_priority INTEGER DEFAULT 50,
+  review_deadline TIMESTAMP(3),
+  
+  -- 人工复核
+  final_decision TEXT,
+  final_decision_by TEXT,
+  final_decision_at TIMESTAMP(3),
+  exclusion_reason TEXT,
+  review_notes TEXT,
+  
+  -- 处理状态
+  processing_status TEXT DEFAULT 'pending',
+  is_degraded BOOLEAN DEFAULT false,
+  degraded_model TEXT,
+  
+  -- 元数据
+  processed_at TIMESTAMP(3),
+  prompt_version TEXT,
+  raw_output_a JSONB,
+  raw_output_b JSONB,
+  created_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  
+  CONSTRAINT fk_fulltext_result_task FOREIGN KEY (task_id) 
+    REFERENCES asl_schema.fulltext_screening_tasks(id) ON DELETE CASCADE,
+  CONSTRAINT fk_fulltext_result_project FOREIGN KEY (project_id) 
+    REFERENCES asl_schema.screening_projects(id) ON DELETE CASCADE,
+  CONSTRAINT fk_fulltext_result_literature FOREIGN KEY (literature_id) 
+    REFERENCES asl_schema.literatures(id) ON DELETE CASCADE,
+  CONSTRAINT unique_project_literature_fulltext UNIQUE (project_id, literature_id)
+);
+
+-- 添加索引
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_task_id ON asl_schema.fulltext_screening_results(task_id);
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_project_id ON asl_schema.fulltext_screening_results(project_id);
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_literature_id ON asl_schema.fulltext_screening_results(literature_id);
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_is_conflict ON asl_schema.fulltext_screening_results(is_conflict);
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_final_decision ON asl_schema.fulltext_screening_results(final_decision);
+CREATE INDEX IF NOT EXISTS idx_fulltext_results_review_priority ON asl_schema.fulltext_screening_results(review_priority);
+
+-- 完成
+SELECT 'Migration completed successfully!' AS status;
+
+

backend/prisma/seed.ts

@@ -114,6 +114,8 @@ main()
 
 
 
+
+