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>

auth0-signup-form.json

@@ -0,0 +1,108 @@
+{
+  "name": "VIP Coordinator User Registration",
+  "languages": {
+    "default": "en",
+    "primary": "en"
+  },
+  "pages": [
+    {
+      "name": "user-registration",
+      "components": [
+        {
+          "type": "header",
+          "config": {
+            "text": "Welcome to VIP Coordinator",
+            "level": 1
+          }
+        },
+        {
+          "type": "description",
+          "config": {
+            "text": "Please provide your information to request access. The first user will be automatically approved as Administrator. Subsequent users require admin approval."
+          }
+        },
+        {
+          "type": "text-input",
+          "config": {
+            "label": "Full Name",
+            "name": "name",
+            "placeholder": "Enter your full name",
+            "required": true,
+            "validation": {
+              "min": 2,
+              "max": 100
+            }
+          }
+        },
+        {
+          "type": "email-input",
+          "config": {
+            "label": "Email Address",
+            "name": "email",
+            "placeholder": "your.email@example.com",
+            "required": true,
+            "validation": {
+              "email": true
+            }
+          }
+        },
+        {
+          "type": "password-input",
+          "config": {
+            "label": "Password",
+            "name": "password",
+            "placeholder": "Create a secure password",
+            "required": true,
+            "validation": {
+              "min": 8,
+              "passwordStrength": "fair"
+            }
+          }
+        },
+        {
+          "type": "text-input",
+          "config": {
+            "label": "Department (Optional)",
+            "name": "user_metadata.department",
+            "placeholder": "e.g., Transportation, Events, Security",
+            "required": false
+          }
+        },
+        {
+          "type": "text-input",
+          "config": {
+            "label": "Organization (Optional)",
+            "name": "user_metadata.organization",
+            "placeholder": "Your organization name",
+            "required": false
+          }
+        },
+        {
+          "type": "checkbox",
+          "config": {
+            "label": "I agree to the terms and conditions",
+            "name": "terms_accepted",
+            "required": true
+          }
+        },
+        {
+          "type": "submit-button",
+          "config": {
+            "label": "Request Access"
+          }
+        }
+      ]
+    }
+  ],
+  "ending": {
+    "after_signup": {
+      "type": "redirect",
+      "url": "http://localhost:5173/callback"
+    }
+  },
+  "style": {
+    "primaryColor": "#3B82F6",
+    "backgroundColor": "#F9FAFB",
+    "buttonRadius": "8px"
+  }
+}