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/Dockerfile

@@ -0,0 +1,75 @@
+# Multi-stage build for development and production
+FROM node:22-slim AS base
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Development stage
+FROM base AS development
+RUN npm install
+# Rebuild native modules for the container architecture
+RUN npm rebuild esbuild
+COPY . .
+EXPOSE 5173
+CMD ["npm", "run", "dev"]
+
+# Build stage
+FROM base AS build
+
+# Accept build argument for API URL
+ARG VITE_API_URL
+ENV VITE_API_URL=$VITE_API_URL
+
+# Install build dependencies for native modules (Debian-based)
+RUN apt-get update && apt-get install -y \
+    python3 \
+    make \
+    g++ \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install dependencies
+RUN npm ci --only=production && npm cache clean --force
+RUN npm install typescript @vitejs/plugin-react vite
+
+# Copy source code
+COPY . .
+
+# Build the application with environment variable available
+RUN npm run build
+
+# Production stage
+FROM nginx:alpine AS production
+
+# Copy custom nginx configuration
+COPY nginx.conf /etc/nginx/nginx.conf
+
+# Copy built application from build stage
+COPY --from=build /app/dist /usr/share/nginx/html
+
+# Create non-root user for security
+RUN addgroup -g 1001 -S appuser && \
+    adduser -S appuser -u 1001 -G appuser
+
+# Set proper permissions and create necessary directories
+RUN chown -R appuser:appuser /usr/share/nginx/html && \
+    chown -R appuser:appuser /var/cache/nginx && \
+    chown -R appuser:appuser /var/log/nginx && \
+    chown -R appuser:appuser /etc/nginx/conf.d && \
+    mkdir -p /tmp/nginx && \
+    chown -R appuser:appuser /tmp/nginx && \
+    touch /tmp/nginx/nginx.pid && \
+    chown appuser:appuser /tmp/nginx/nginx.pid
+
+# Switch to non-root user
+USER appuser
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1
+
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]