gamma-multi-env-setup

# Gamma Multi-Environment Setup

## Overview
Configure Gamma across development, staging, and production environments with proper isolation and secrets management.

## Prerequisites
- Separate Gamma API keys per environment
- Secret management solution (Vault, AWS Secrets Manager, etc.)
- CI/CD pipeline with environment variables
- Environment detection in application

## Instructions

### Step 1: Environment Configuration Structure
```typescript
// config/gamma.config.ts
interface GammaConfig {
  apiKey: string;
  baseUrl: string;
  timeout: number;
  retries: number;
  debug: boolean;
}

type Environment = 'development' | 'staging' | 'production';

const configs: Record<Environment, Partial<GammaConfig>> = {
  development: {
    baseUrl: 'https://api.gamma.app/v1',
    timeout: 60000,
    retries: 1,
    debug: true,
  },
  staging: {
    baseUrl: 'https://api.gamma.app/v1',
    timeout: 45000,
    retries: 2,
    debug: true,
  },
  production: {
    baseUrl: 'https://api.gamma.app/v1',
    timeout: 30000,
    retries: 3,
    debug: false,
  },
};

export function getConfig(): GammaConfig {
  const env = (process.env.NODE_ENV || 'development') as Environment;
  const envConfig = configs[env];

  return {
    apiKey: process.env.GAMMA_API_KEY!,
    ...envConfig,
  } as GammaConfig;
}
```

### Step 2: Environment-Specific API Keys
```bash
# .env.development
GAMMA_API_KEY=gamma_dev_xxx...
GAMMA_MOCK=false
NODE_ENV=development

# .env.staging
GAMMA_API_KEY=gamma_staging_xxx...
GAMMA_MOCK=false
NODE_ENV=staging

# .env.production
GAMMA_API_KEY=gamma_prod_xxx...
GAMMA_MOCK=false
NODE_ENV=production
```

### Step 3: Secret Management Integration
```typescript
// lib/secrets.ts
import { SecretsManager } from '@aws-sdk/client-secrets-manager';

const secretsManager = new SecretsManager({ region: 'us-east-1' });

interface SecretCache {
  value: string;
  expiresAt: number;
}

const cache: Map<string, SecretCache> = new Map();
const CACHE_TTL = 300000; // 5 minutes

export