feat(rvw): Complete Phase 4-5 - Bug fixes and Word export

Summary:
- Fix methodology score display issue in task list (show score instead of 'warn')
- Add methodology_score field to database schema
- Fix report display when only methodology agent is selected
- Implement Word document export using docx library
- Update documentation to v3.0/v3.1

Backend changes:
- Add methodologyScore to Prisma schema and TaskSummary type
- Update reviewWorker to save methodologyScore
- Update getTaskList to return methodologyScore

Frontend changes:
- Install docx and file-saver libraries
- Implement handleExportReport with Word generation
- Fix activeTab auto-selection based on available data
- Add proper imports for docx components

Documentation:
- Update RVW module status to 90% (Phase 1-5 complete)
- Update system status document to v3.0

Tested: All review workflows verified, Word export functional

docs/03-业务模块/DC-数据清洗整理/07-技术债务/Tool-B技术债务清单.md

@@ -476,6 +476,8 @@ ${fields.map((f, i) => `${i + 1}. ${f.name}：${f.desc}`).join('\n')}
 
 
 
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