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/dataService.d.ts

@@ -0,0 +1,39 @@
+declare class DataService {
+    private dataDir;
+    private dataFile;
+    private data;
+    constructor();
+    private loadData;
+    private saveData;
+    getVips(): any[];
+    addVip(vip: any): any;
+    updateVip(id: string, updatedVip: any): any | null;
+    deleteVip(id: string): any | null;
+    getDrivers(): any[];
+    addDriver(driver: any): any;
+    updateDriver(id: string, updatedDriver: any): any | null;
+    deleteDriver(id: string): any | null;
+    getSchedule(vipId: string): any[];
+    addScheduleEvent(vipId: string, event: any): any;
+    updateScheduleEvent(vipId: string, eventId: string, updatedEvent: any): any | null;
+    deleteScheduleEvent(vipId: string, eventId: string): any | null;
+    getAllSchedules(): {
+        [vipId: string]: any[];
+    };
+    getAdminSettings(): any;
+    updateAdminSettings(settings: any): void;
+    createBackup(): string;
+    getUsers(): any[];
+    getUserByEmail(email: string): any | null;
+    getUserById(id: string): any | null;
+    addUser(user: any): any;
+    updateUser(email: string, updatedUser: any): any | null;
+    updateUserRole(email: string, role: string): any | null;
+    updateUserLastSignIn(email: string): any | null;
+    deleteUser(email: string): any | null;
+    getUserCount(): number;
+    getDataStats(): any;
+}
+declare const _default: DataService;
+export default _default;
+//# sourceMappingURL=dataService.d.ts.map