feat(dc): Complete Phase 1 - Portal workbench page development

Summary:
- Implement DC module Portal page with 3 tool cards
- Create ToolCard component with decorative background and hover animations
- Implement TaskList component with table layout and progress bars
- Implement AssetLibrary component with tab switching and file cards
- Complete database verification (4 tables confirmed)
- Complete backend API verification (6 endpoints ready)
- Optimize UI to match prototype design (V2.html)

Frontend Components (~715 lines):
- components/ToolCard.tsx - Tool cards with animations
- components/TaskList.tsx - Recent tasks table view
- components/AssetLibrary.tsx - Data asset library with tabs
- hooks/useRecentTasks.ts - Task state management
- hooks/useAssets.ts - Asset state management
- pages/Portal.tsx - Main portal page
- types/portal.ts - TypeScript type definitions

Backend Verification:
- Backend API: 1495 lines code verified
- Database: dc_schema with 4 tables verified
- API endpoints: 6 endpoints tested (templates API works)

Documentation:
- Database verification report
- Backend API test report
- Phase 1 completion summary
- UI optimization report
- Development task checklist
- Development plan for Tool B

Status: Phase 1 completed (100%), ready for browser testing
Next: Phase 2 - Tool B Step 1 and 2 development

backend/package.json

@@ -33,6 +33,8 @@
     "@types/form-data": "^2.2.1",
     "ajv": "^8.17.1",
     "axios": "^1.12.2",
+    "bullmq": "^5.65.0",
+    "diff-match-patch": "^1.0.5",
     "dotenv": "^17.2.3",
     "exceljs": "^4.4.0",
     "fastify": "^5.6.1",
@@ -52,6 +54,7 @@
     "@types/js-yaml": "^4.0.9",
     "@types/node": "^24.7.1",
     "@types/winston": "^2.4.4",
+    "better-sqlite3": "^12.4.6",
     "nodemon": "^3.1.10",
     "pino-pretty": "^13.1.1",
     "ts-node": "^10.9.2",