Env Setup Wizard

This walks you through setting up environment variables properly with type safety and validation. It creates the full .env file structure you need (development, production, example files), then adds Zod schemas to catch missing or invalid variables on startup instead of at runtime. Includes ready to use templates for common services like Stripe and database URLs, organized by category with comments on where to get API keys. The T3 env approach for Next.js is especially clean since it enforces the server/client split at the type level. Good for onboarding new projects or fixing that mess where half your team has different .env files and nobody knows what's actually required.