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

frontend-v2/package.json

@@ -23,6 +23,8 @@
     "dayjs": "^1.11.19",
     "dexie": "^4.2.1",
     "diff-match-patch": "^1.0.5",
+    "docx": "^9.5.1",
+    "file-saver": "^2.0.5",
     "immer": "^11.0.0",
     "lodash": "^4.17.21",
     "lucide-react": "^0.555.0",
@@ -36,6 +38,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
+    "@types/file-saver": "^2.0.7",
     "@types/lodash": "^4.17.21",
     "@types/node": "^24.10.0",
     "@types/react": "^19.2.2",