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>

backend-old-20260125/dist/services/enhancedDataService.d.ts

@@ -0,0 +1,60 @@
+interface VipData {
+    id: string;
+    name: string;
+    organization: string;
+    department?: string;
+    transportMode: 'flight' | 'self-driving';
+    expectedArrival?: string;
+    needsAirportPickup?: boolean;
+    needsVenueTransport: boolean;
+    notes?: string;
+    flights?: Array<{
+        flightNumber: string;
+        flightDate: string;
+        segment: number;
+    }>;
+}
+interface DriverData {
+    id: string;
+    name: string;
+    phone: string;
+    department?: string;
+    currentLocation?: {
+        lat: number;
+        lng: number;
+    };
+    assignedVipIds?: string[];
+}
+interface ScheduleEventData {
+    id: string;
+    title: string;
+    location: string;
+    startTime: string;
+    endTime: string;
+    description?: string;
+    assignedDriverId?: string;
+    status: string;
+    type: string;
+}
+declare class EnhancedDataService {
+    getVips(): Promise<VipData[]>;
+    addVip(vip: VipData): Promise<VipData>;
+    updateVip(id: string, vip: Partial<VipData>): Promise<VipData | null>;
+    deleteVip(id: string): Promise<VipData | null>;
+    getDrivers(): Promise<DriverData[]>;
+    addDriver(driver: DriverData): Promise<DriverData>;
+    updateDriver(id: string, driver: Partial<DriverData>): Promise<DriverData | null>;
+    deleteDriver(id: string): Promise<DriverData | null>;
+    getSchedule(vipId: string): Promise<ScheduleEventData[]>;
+    addScheduleEvent(vipId: string, event: ScheduleEventData): Promise<ScheduleEventData>;
+    updateScheduleEvent(vipId: string, eventId: string, event: ScheduleEventData): Promise<ScheduleEventData | null>;
+    deleteScheduleEvent(vipId: string, eventId: string): Promise<ScheduleEventData | null>;
+    getAllSchedules(): Promise<{
+        [vipId: string]: ScheduleEventData[];
+    }>;
+    getAdminSettings(): Promise<any>;
+    updateAdminSettings(settings: any): Promise<void>;
+}
+declare const _default: EnhancedDataService;
+export default _default;
+//# sourceMappingURL=enhancedDataService.d.ts.map