Cursor Prompt Enhancer

Add JWT-based user authentication to my Next.js app. **Current stack:** - Next.js 14 with App Router - Prisma with PostgreSQL - TypeScript **Requirements:** 1. Create signup and login API routes at /api/auth/* 2. Add a User model to the Prisma schema (email, password hash, name) 3. Use bcrypt for password hashing 4. Return JWT token on successful auth 5. Create a middleware to protect authenticated routes **Files to modify:** - prisma/schema.prisma (add User model) - src/app/api/auth/signup/route.ts (new) - src/app/api/auth/login/route.ts (new) - src/middleware.ts (add auth check) **Please:** Follow existing code patterns in the codebase and add proper TypeScript types.