Major Enhancement: NestJS Migration + CASL Authorization + Error Handling

Complete rewrite from Express to NestJS with enterprise-grade features:

## Backend Improvements
- Migrated from Express to NestJS 11.0.1 with TypeScript
- Implemented Prisma ORM 7.3.0 for type-safe database access
- Added CASL authorization system replacing role-based guards
- Created global exception filters with structured logging
- Implemented Auth0 JWT authentication with Passport.js
- Added vehicle management with conflict detection
- Enhanced event scheduling with driver/vehicle assignment
- Comprehensive error handling and logging

## Frontend Improvements
- Upgraded to React 19.2.0 with Vite 7.2.4
- Implemented CASL-based permission system
- Added AbilityContext for declarative permissions
- Created ErrorHandler utility for consistent error messages
- Enhanced API client with request/response logging
- Added War Room (Command Center) dashboard
- Created VIP Schedule view with complete itineraries
- Implemented Vehicle Management UI
- Added mock data generators for testing (288 events across 20 VIPs)

## New Features
- Vehicle fleet management (types, capacity, status tracking)
- Complete 3-day Jamboree schedule generation
- Individual VIP schedule pages with PDF export (planned)
- Real-time War Room dashboard with auto-refresh
- Permission-based navigation filtering
- First user auto-approval as administrator

## Documentation
- Created CASL_AUTHORIZATION.md (comprehensive guide)
- Created ERROR_HANDLING.md (error handling patterns)
- Updated CLAUDE.md with new architecture
- Added migration guides and best practices

## Technical Debt Resolved
- Removed custom authentication in favor of Auth0
- Replaced role checks with CASL abilities
- Standardized error responses across API
- Implemented proper TypeScript typing
- Added comprehensive logging

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend-old-20260125/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "vip-coordinator-frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "engines": {
+    "node": ">=22.0.0",
+    "npm": ">=10.0.0"
+  },
+  "scripts": {
+    "dev": "node ./node_modules/vite/bin/vite.js",
+    "build": "tsc && vite build",
+    "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "keycloak-js": "^24.0.5",
+    "leaflet": "^1.9.4",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-leaflet": "^4.2.1",
+    "react-router-dom": "^6.15.0"
+  },
+  "devDependencies": {
+    "@types/leaflet": "^1.9.4",
+    "@types/react": "^18.2.15",
+    "@types/react-dom": "^18.2.7",
+    "@typescript-eslint/eslint-plugin": "^8.15.0",
+    "@typescript-eslint/parser": "^8.15.0",
+    "@vitejs/plugin-react": "^4.3.3",
+    "autoprefixer": "^10.4.14",
+    "eslint": "^9.15.0",
+    "eslint-plugin-react-hooks": "^5.0.0",
+    "eslint-plugin-react-refresh": "^0.4.14",
+    "postcss": "^8.5.4",
+    "tailwindcss": "^3.4.1",
+    "typescript": "^5.6.0",
+    "vite": "^5.4.10"
+  }
+}