feat(rvw): Complete V2.0 Week 3 - Statistical validation extension and UX improvements

Week 3 Development Summary:

- Implement negative sign normalization (6 Unicode variants)

- Enhance T-test validation with smart sample size extraction

- Enhance SE triangle and CI-P consistency validation with subrow support

- Add precise sub-cell highlighting for P-values in multi-line cells

- Add frontend issue type Chinese translations (6 new types)

- Add file format tips for PDF/DOC uploads

Technical improvements:

- Add _clean_statistical_text() in extractor.py

- Add _safe_float() wrapper in validator.py

- Add ForensicsReport.tsx component

- Update ISSUE_TYPE_LABELS translations

Documentation:

- Add 2026-02-18 development record

- Update RVW module status (v5.1)

- Update system status (v5.2)

Status: Week 3 complete, ready for Week 4 testing
Co-authored-by: Cursor <cursoragent@cursor.com>

extraction_service/main.py

@@ -52,9 +52,6 @@ app.add_middleware(
 TEMP_DIR = Path(os.getenv("TEMP_DIR", "/tmp/extraction_service"))
 TEMP_DIR.mkdir(parents=True, exist_ok=True)
 
-# 注册 RVW V2.0 数据侦探路由
-app.include_router(forensics_router)
-
 # 导入服务模块
 from services.pdf_extractor import extract_pdf_pymupdf
 from services.pdf_processor import extract_pdf, get_pdf_processing_strategy
@@ -71,6 +68,7 @@ from services.doc_export_service import check_pandoc_available, convert_markdown
 
 # 新增：RVW V2.0 数据侦探模块
 from forensics.api import router as forensics_router
+app.include_router(forensics_router)
 
 # 兼容：nougat 相关（已废弃，保留空实现避免报错）
 def check_nougat_available(): return False