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/databaseService.d.ts

@@ -0,0 +1,56 @@
+import { PoolClient } from 'pg';
+declare class EnhancedDatabaseService {
+    private backupService;
+    constructor();
+    query(text: string, params?: any[]): Promise<any>;
+    getClient(): Promise<PoolClient>;
+    close(): Promise<void>;
+    initializeTables(): Promise<void>;
+    createUser(user: any): Promise<any>;
+    getUserByEmail(email: string): Promise<any>;
+    getUserById(id: string): Promise<any>;
+    updateUserRole(email: string, role: string): Promise<any>;
+    updateUserLastSignIn(email: string): Promise<any>;
+    getUserCount(): Promise<number>;
+    updateUserApprovalStatus(email: string, status: 'pending' | 'approved' | 'denied'): Promise<any>;
+    getApprovedUserCount(): Promise<number>;
+    getAllUsers(): Promise<any[]>;
+    deleteUser(email: string): Promise<boolean>;
+    getPendingUsers(): Promise<any[]>;
+    completeUserOnboarding(email: string, onboardingData: any): Promise<any>;
+    approveUser(userEmail: string, approvedBy: string, newRole?: string): Promise<any>;
+    rejectUser(userEmail: string, rejectedBy: string, reason?: string): Promise<any>;
+    deactivateUser(userEmail: string, deactivatedBy: string): Promise<any>;
+    reactivateUser(userEmail: string, reactivatedBy: string): Promise<any>;
+    createAuditLog(action: string, userEmail: string, performedBy: string, details: any): Promise<void>;
+    getUserAuditLog(userEmail: string): Promise<any[]>;
+    getUsersWithFilters(filters: {
+        status?: string;
+        role?: string;
+        search?: string;
+    }): Promise<any[]>;
+    getActiveUserCount(): Promise<number>;
+    isFirstUser(): Promise<boolean>;
+    createVip(vip: any): Promise<any>;
+    getVipById(id: string): Promise<any>;
+    getAllVips(): Promise<any[]>;
+    updateVip(id: string, vip: any): Promise<any>;
+    deleteVip(id: string): Promise<boolean>;
+    getVipsByDepartment(department: string): Promise<any[]>;
+    createDriver(driver: any): Promise<any>;
+    getDriverById(id: string): Promise<any>;
+    getAllDrivers(): Promise<any[]>;
+    updateDriver(id: string, driver: any): Promise<any>;
+    deleteDriver(id: string): Promise<boolean>;
+    getDriversByDepartment(department: string): Promise<any[]>;
+    updateDriverLocation(id: string, location: any): Promise<any>;
+    createScheduleEvent(vipId: string, event: any): Promise<any>;
+    getScheduleByVipId(vipId: string): Promise<any[]>;
+    updateScheduleEvent(vipId: string, eventId: string, event: any): Promise<any>;
+    deleteScheduleEvent(vipId: string, eventId: string): Promise<boolean>;
+    getAllScheduleEvents(): Promise<any[]>;
+    getScheduleEventsByDateRange(startDate: Date, endDate: Date): Promise<any[]>;
+}
+declare const databaseService: EnhancedDatabaseService;
+export default databaseService;
+//# sourceMappingURL=databaseService.d.ts.map