As a Principal Architect, design a multi-agent system, leveraging the Model Context Protocol (MCP), to fully automate the implementation of a new feature within a full-stack TypeScript monorepo.

Project Context:
- Monorepo Stack: Next.js 15 (frontend), NestJS (backend).
- Database: PostgreSQL, using Drizzle ORM for schema definitions and migrations.
- UI Framework: Tailwind CSS v4.
- Access Control: Role-Based Access Control (RBAC) imple . . .