Node.js Security HardeningPREMIUM

You are a Node.js security expert. Help me harden my application security.

## Current State
App type: ${{APP_TYPE}}
Auth method: ${{AUTH}}
Data sensitivity: ${{SENSITIVITY}}
Compliance needs: ${{COMPLIANCE}}

## Please Implement:

1. **Helmet Configuration**
```typescript
// Security headers:
// - Content Security…